5183d3514ae6e8257386cc2d1384438d3da170b5
128 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Ivaylo Georgiev
|
b434e4bcd4 |
Merge android-4.19-q.84 (314ab78) into msm-4.19
* refs/heads/tmp-314ab78: Linux 4.19.84 kvm: x86: mmu: Recovery of shattered NX large pages kvm: Add helper function for creating VM worker threads kvm: mmu: ITLB_MULTIHIT mitigation KVM: vmx, svm: always run with EFER.NXE=1 when shadow paging is active KVM: x86: add tracepoints around __direct_map and FNAME(fetch) KVM: x86: change kvm_mmu_page_get_gfn BUG_ON to WARN_ON KVM: x86: remove now unneeded hugepage gfn adjustment KVM: x86: make FNAME(fetch) and __direct_map more similar kvm: mmu: Do not release the page inside mmu_set_spte() kvm: Convert kvm_lock to a mutex kvm: x86, powerpc: do not allow clearing largepages debugfs entry Documentation: Add ITLB_MULTIHIT documentation cpu/speculation: Uninline and export CPU mitigations helpers x86/cpu: Add Tremont to the cpu vulnerability whitelist x86/bugs: Add ITLB_MULTIHIT bug infrastructure x86/speculation/taa: Fix printing of TAA_MSG_SMT on IBRS_ALL CPUs x86/tsx: Add config options to set tsx=on|off|auto x86/speculation/taa: Add documentation for TSX Async Abort x86/tsx: Add "auto" option to the tsx= cmdline parameter kvm/x86: Export MDS_NO=0 to guests when TSX is enabled x86/speculation/taa: Add sysfs reporting for TSX Async Abort x86/speculation/taa: Add mitigation for TSX Async Abort x86/cpu: Add a "tsx=" cmdline option with TSX disabled by default x86/cpu: Add a helper function x86_read_arch_cap_msr() x86/msr: Add the IA32_TSX_CTRL MSR KVM: x86: use Intel speculation bugs and features as derived in generic x86 code drm/i915/cmdparser: Fix jump whitelist clearing drm/i915/gen8+: Add RC6 CTX corruption WA drm/i915: Lower RM timeout to avoid DSI hard hangs drm/i915/cmdparser: Ignore Length operands during command matching drm/i915/cmdparser: Add support for backward jumps drm/i915/cmdparser: Use explicit goto for error paths drm/i915: Add gen9 BCS cmdparsing drm/i915: Allow parsing of unsized batches drm/i915: Support ro ppgtt mapped cmdparser shadow buffers drm/i915: Add support for mandatory cmdparsing drm/i915: Remove Master tables from cmdparser drm/i915: Disable Secure Batches for gen6+ drm/i915: Rename gen7 cmdparser tables vsock/virtio: fix sock refcnt holding during the shutdown iio: imu: mpu6050: Fix FIFO layout for ICM20602 net: prevent load/store tearing on sk->sk_stamp netfilter: ipset: Copy the right MAC address in hash:ip,mac IPv6 sets usbip: Fix free of unallocated memory in vhci tx cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead mm/filemap.c: don't initiate writeback if mapping has no dirty pages iio: imu: inv_mpu6050: fix no data on MPU6050 iio: imu: mpu6050: Add support for the ICM 20602 IMU blkcg: make blkcg_print_stat() print stats only for online blkgs pinctrl: cherryview: Fix irq_valid_mask calculation ocfs2: protect extent tree in ocfs2_prepare_inode_for_write() pinctrl: intel: Avoid potential glitches if pin is in GPIO mode e1000: fix memory leaks igb: Fix constant media auto sense switching when no cable is connected net: ethernet: arc: add the missed clk_disable_unprepare NFSv4: Don't allow a cached open with a revoked delegation usb: dwc3: gadget: fix race when disabling ep with cancelled xfers hv_netvsc: Fix error handling in netvsc_attach() drm/amd/display: Passive DP->HDMI dongle detection fix drm/amdgpu: If amdgpu_ib_schedule fails return back the error. iommu/amd: Apply the same IVRS IOAPIC workaround to Acer Aspire A315-41 net: mscc: ocelot: refuse to overwrite the port's native vlan net: mscc: ocelot: fix vlan_filtering when enslaving to bridge before link is up net: hisilicon: Fix "Trying to free already-free IRQ" fjes: Handle workqueue allocation failure nvme-multipath: fix possible io hang after ctrl reconnect scsi: qla2xxx: stop timer in shutdown path RDMA/hns: Prevent memory leaks of eq->buf_list RDMA/iw_cxgb4: Avoid freeing skb twice in arp failure case usbip: tools: Fix read_usb_vudc_device() error path handling USB: ldusb: use unsigned size format specifiers USB: Skip endpoints with 0 maxpacket length perf/x86/uncore: Fix event group support perf/x86/amd/ibs: Handle erratum #420 only on the affected CPU family (10h) perf/x86/amd/ibs: Fix reading of the IBS OpData register and thus precise RIP validity usb: dwc3: remove the call trace of USBx_GFLADJ usb: gadget: configfs: fix concurrent issue between composite APIs usb: dwc3: pci: prevent memory leak in dwc3_pci_probe usb: gadget: composite: Fix possible double free memory bug usb: gadget: udc: atmel: Fix interrupt storm in FIFO mode. usb: fsl: Check memory resource before releasing it macsec: fix refcnt leak in module exit routine bonding: fix unexpected IFF_BONDING bit unset ipvs: move old_secure_tcp into struct netns_ipvs ipvs: don't ignore errors in case refcounting ip_vs module fails netfilter: nf_flow_table: set timeout before insertion into hashes scsi: qla2xxx: Initialized mailbox to prevent driver load failure scsi: lpfc: Honor module parameter lpfc_use_adisc net: openvswitch: free vport unless register_netdevice() succeeds RDMA/uverbs: Prevent potential underflow scsi: qla2xxx: fixup incorrect usage of host_byte net/mlx5: prevent memory leak in mlx5_fpga_conn_create_cq net/mlx5e: TX, Fix consumer index of error cqe dump RDMA/qedr: Fix reported firmware version iw_cxgb4: fix ECN check on the passive accept RDMA/mlx5: Clear old rate limit when closing QP HID: intel-ish-hid: fix wrong error handling in ishtp_cl_alloc_tx_ring() dmaengine: sprd: Fix the possible memory leak issue dmaengine: xilinx_dma: Fix control reg update in vdma_channel_set_config HID: google: add magnemite/masterball USB ids PCI: tegra: Enable Relaxed Ordering only for Tegra20 & Tegra30 usbip: Implement SG support to vhci-hcd and stub driver usbip: Fix vhci_urb_enqueue() URB null transfer buffer error path sched/fair: Fix -Wunused-but-set-variable warnings sched/fair: Fix low cpu usage with high throttling by removing expiration of cpu-local slices ALSA: usb-audio: Fix copy&paste error in the validator ALSA: usb-audio: remove some dead code ALSA: usb-audio: Fix possible NULL dereference at create_yamaha_midi_quirk() ALSA: usb-audio: Clean up check_input_term() ALSA: usb-audio: Remove superfluous bLength checks ALSA: usb-audio: Unify the release of usb_mixer_elem_info objects ALSA: usb-audio: Simplify parse_audio_unit() ALSA: usb-audio: More validations of descriptor units configfs: fix a deadlock in configfs_symlink() configfs: provide exclusion between IO and removals configfs: new object reprsenting tree fragments configfs_register_group() shouldn't be (and isn't) called in rmdirable parts configfs: stash the data we need into configfs_buffer at open time can: peak_usb: fix slab info leak can: mcba_usb: fix use-after-free on disconnect can: dev: add missing of_node_put() after calling of_get_child_by_name() can: gs_usb: gs_can_open(): prevent memory leak can: rx-offload: can_rx_offload_queue_sorted(): fix error handling, avoid skb mem leak can: peak_usb: fix a potential out-of-sync while decoding packets can: c_can: c_can_poll(): only read status register after status IRQ can: flexcan: disable completely the ECC mechanism can: usb_8dev: fix use-after-free on disconnect SMB3: Fix persistent handles reconnect x86/apic/32: Avoid bogus LDR warnings intel_th: pci: Add Jasper Lake PCH support intel_th: pci: Add Comet Lake PCH support netfilter: ipset: Fix an error code in ip_set_sockfn_get() netfilter: nf_tables: Align nft_expr private data to 64-bit ARM: sunxi: Fix CPU powerdown on A83T iio: srf04: fix wrong limitation in distance measuring iio: imu: adis16480: make sure provided frequency is positive iio: adc: stm32-adc: fix stopping dma ceph: add missing check in d_revalidate snapdir handling ceph: fix use-after-free in __ceph_remove_cap() arm64: Do not mask out PTE_RDONLY in pte_same() soundwire: bus: set initial value to port_status soundwire: depend on ACPI HID: wacom: generic: Treat serial number and related fields as unsigned drm/radeon: fix si_enable_smc_cac() failed issue perf tools: Fix time sorting tools: gpio: Use !building_out_of_srctree to determine srctree dump_stack: avoid the livelock of the dump_lock mm, vmstat: hide /proc/pagetypeinfo from normal users mm: thp: handle page cache THP correctly in PageTransCompoundMap mm, meminit: recalculate pcpu batch and high limits after init completes mm: memcontrol: fix network errors from failing __GFP_ATOMIC charges ALSA: hda/ca0132 - Fix possible workqueue stall ALSA: bebob: fix to detect configured source of sampling clock for Focusrite Saffire Pro i/o series ALSA: timer: Fix incorrectly assigned timer instance net: hns: Fix the stray netpoll locks causing deadlock in NAPI path ipv6: fixes rt6_probe() and fib6_nh->last_probe init net: mscc: ocelot: fix NULL pointer on LAG slave removal net: mscc: ocelot: don't handle netdev events for other netdevs qede: fix NULL pointer deref in __qede_remove() NFC: st21nfca: fix double free nfc: netlink: fix double device reference drop NFC: fdp: fix incorrect free object net: usb: qmi_wwan: add support for DW5821e with eSIM support net: qualcomm: rmnet: Fix potential UAF when unregistering net: fix data-race in neigh_event_send() net: ethernet: octeon_mgmt: Account for second possible VLAN header ipv4: Fix table id reference in fib_sync_down_addr CDC-NCM: handle incomplete transfer of MTU bonding: fix state transition issue in link monitoring Linux 4.19.83 usb: gadget: udc: core: Fix segfault if udc_bind_to_driver() for pending driver fails arm64: dts: ti: k3-am65-main: Fix gic-its node unit-address ASoC: pcm3168a: The codec does not support S32_LE selftests/powerpc: Fix compile error on tlbie_test due to newer gcc selftests/powerpc: Add test case for tlbie vs mtpidr ordering issue powerpc/mm: Fixup tlbie vs mtpidr/mtlpidr ordering issue on POWER9 platform/x86: pmc_atom: Add Siemens SIMATIC IPC227E to critclk_systems DMI table wireless: Skip directory when generating certificates net/flow_dissector: switch to siphash r8152: add device id for Lenovo ThinkPad USB-C Dock Gen 2 net: dsa: fix switch tree list net: usb: lan78xx: Connect PHY before registering MAC net: bcmgenet: reset 40nm EPHY on energy detect net: phy: bcm7xxx: define soft_reset for 40nm EPHY net: bcmgenet: don't set phydev->link from MAC net: dsa: b53: Do not clear existing mirrored port mask net/mlx5e: Fix ethtool self test: link speed r8169: fix wrong PHY ID issue with RTL8168dp net/mlx5e: Fix handling of compressed CQEs in case of low NAPI budget selftests: fib_tests: add more tests for metric update ipv4: fix route update on metric change. net: add READ_ONCE() annotation in __skb_wait_for_more_packets() net: use skb_queue_empty_lockless() in busy poll contexts net: use skb_queue_empty_lockless() in poll() handlers udp: use skb_queue_empty_lockless() net: add skb_queue_empty_lockless() vxlan: check tun_info options_len properly udp: fix data-race in udp_set_dev_scratch() selftests: net: reuseport_dualstack: fix uninitalized parameter net: Zeroing the structure ethtool_wolinfo in ethtool_get_wol() net: usb: lan78xx: Disable interrupts before calling generic_handle_irq() netns: fix GFP flags in rtnl_net_notifyid() net/mlx4_core: Dynamically set guaranteed amount of counters per VF net: hisilicon: Fix ping latency when deal with high throughput net: fix sk_page_frag() recursion from memory reclaim net: ethernet: ftgmac100: Fix DMA coherency issue with SW checksum net: dsa: bcm_sf2: Fix IMP setup for port different than 8 net: annotate lockless accesses to sk->sk_napi_id net: annotate accesses to sk->sk_incoming_cpu inet: stop leaking jiffies on the wire erspan: fix the tun_info options_len check for erspan dccp: do not leak jiffies on the wire cxgb4: fix panic when attaching to ULD fail nbd: handle racing with error'ed out commands nbd: protect cmd->status with cmd->lock cifs: Fix cifsInodeInfo lock_sem deadlock when reconnect occurs i2c: stm32f7: remove warning when compiling with W=1 i2c: stm32f7: fix a race in slave mode with arbitration loss irq i2c: stm32f7: fix first byte to send in slave mode irqchip/gic-v3-its: Use the exact ITSList for VMOVP MIPS: bmips: mark exception vectors as char arrays of: unittest: fix memory leak in unittest_data_add ARM: 8926/1: v7m: remove register save to stack before svc tracing: Fix "gfp_t" format for synthetic events scsi: target: core: Do not overwrite CDB byte 1 drm/amdgpu: fix potential VM faults ARM: davinci: dm365: Fix McBSP dma_slave_map entry perf kmem: Fix memory leak in compact_gfp_flags() 8250-men-mcb: fix error checking when get_num_ports returns -ENODEV perf c2c: Fix memory leak in build_cl_output() ARM: dts: imx7s: Correct GPT's ipg clock source scsi: fix kconfig dependency warning related to 53C700_LE_ON_BE scsi: sni_53c710: fix compilation error scsi: scsi_dh_alua: handle RTPG sense code correctly during state transitions scsi: qla2xxx: fix a potential NULL pointer dereference ARM: mm: fix alignment handler faults under memory pressure pinctrl: ns2: Fix off by one bugs in ns2_pinmux_enable() ARM: dts: logicpd-torpedo-som: Remove twl_keypad ASoc: rockchip: i2s: Fix RPM imbalance ASoC: wm_adsp: Don't generate kcontrols without READ flags regulator: pfuze100-regulator: Variable "val" in pfuze100_regulator_probe() could be uninitialized ASoC: rt5682: add NULL handler to set_jack function regulator: ti-abb: Fix timeout in ti_abb_wait_txdone/ti_abb_clear_all_txdone arm64: dts: Fix gpio to pinmux mapping arm64: dts: allwinner: a64: sopine-baseboard: Add PHY regulator delay arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay ASoC: wm8994: Do not register inapplicable controls for WM1811 regulator: of: fix suspend-min/max-voltage parsing kbuild: add -fcf-protection=none when using retpoline flags Linux 4.19.82 Revert "ALSA: hda: Flush interrupts on disabling" powerpc/powernv: Fix CPU idle to be called with IRQs disabled ALSA: usb-audio: Add DSD support for Gustard U16/X26 USB Interface ALSA: usb-audio: Update DSD support quirks for Oppo and Rotel ALSA: usb-audio: DSD auto-detection for Playback Designs ALSA: timer: Fix mutex deadlock at releasing card ALSA: timer: Simplify error path in snd_timer_open() sch_netem: fix rcu splat in netem_enqueue() net: usb: sr9800: fix uninitialized local variable bonding: fix potential NULL deref in bond_update_slave_arr NFC: pn533: fix use-after-free and memleaks rxrpc: Fix trace-after-put looking at the put peer record rxrpc: rxrpc_peer needs to hold a ref on the rxrpc_local record rxrpc: Fix call ref leak llc: fix sk_buff leak in llc_conn_service() llc: fix sk_buff leak in llc_sap_state_process() batman-adv: Avoid free/alloc race when handling OGM buffer NFS: Fix an RCU lock leak in nfs4_refresh_delegation_stateid() drm/amdgpu/powerplay/vega10: allow undervolting in p7 dmaengine: cppi41: Fix cppi41_dma_prep_slave_sg() when idle dmaengine: qcom: bam_dma: Fix resource leak rtlwifi: Fix potential overflow on P2P code arm64: Ensure VM_WRITE|VM_SHARED ptes are clean by default s390/idle: fix cpu idle time calculation s390/cmm: fix information leak in cmm_timeout_handler() nl80211: fix validation of mesh path nexthop HID: fix error message in hid_open_report() HID: Fix assumption that devices have inputs HID: i2c-hid: add Trekstor Primebook C11B to descriptor override scsi: target: cxgbit: Fix cxgbit_fw4_ack() USB: serial: whiteheat: fix line-speed endianness USB: serial: whiteheat: fix potential slab corruption usb: xhci: fix __le32/__le64 accessors in debugfs code USB: ldusb: fix control-message timeout USB: ldusb: fix ring-buffer locking usb-storage: Revert commit 747668dbc061 ("usb-storage: Set virt_boundary_mask to avoid SG overflows") USB: gadget: Reject endpoints with 0 maxpacket value UAS: Revert commit 3ae62a42090f ("UAS: fix alignment of scatter/gather segments") ALSA: hda/realtek - Add support for ALC623 ALSA: hda/realtek - Fix 2 front mics of codec 0x623 ALSA: bebob: Fix prototype of helper function to return negative value fuse: truncate pending writes on O_TRUNC fuse: flush dirty data/metadata before non-truncate setattr ath6kl: fix a NULL-ptr-deref bug in ath6kl_usb_alloc_urb_from_pipe() thunderbolt: Use 32-bit writes when writing ring producer/consumer USB: legousbtower: fix a signedness bug in tower_probe() nbd: verify socket is supported during setup iwlwifi: exclude GEO SAR support for 3168 ALSA: hda/realtek: Reduce the Headphone static noise on XPS 9350/9360 ARM: 8914/1: NOMMU: Fix exc_ret for XIP tracing: Initialize iter->seq after zeroing in tracing_read_pipe() s390/uaccess: avoid (false positive) compiler warnings NFSv4: Fix leak of clp->cl_acceptor string nbd: fix possible sysfs duplicate warning virt: vbox: fix memory leak in hgcm_call_preprocess_linaddr MIPS: fw: sni: Fix out of bounds init of o32 stack MIPS: include: Mark __xchg as __always_inline iio: imu: adis16400: release allocated memory on failure drm/amdgpu: fix memory leak perf/x86/amd: Change/fix NMI latency mitigation to use a timestamp sched/vtime: Fix guest/system mis-accounting on task switch x86/cpu: Add Comet Lake to the Intel CPU models header arm64: armv8_deprecated: Checking return value for memory allocation fs: ocfs2: fix a possible null-pointer dereference in ocfs2_info_scan_inode_alloc() fs: ocfs2: fix a possible null-pointer dereference in ocfs2_write_end_nolock() fs: ocfs2: fix possible null-pointer dereferences in ocfs2_xa_prepare_entry() ocfs2: clear zero in unaligned direct IO x86/xen: Return from panic notifier MIPS: include: Mark __cmpxchg as __always_inline efi/x86: Do not clean dummy variable in kexec path efi/cper: Fix endianness of PCIe class code serial: mctrl_gpio: Check for NULL pointer fs: cifs: mute -Wunused-const-variable message gpio: max77620: Use correct unit for debounce times tty: n_hdlc: fix build on SPARC tty: serial: owl: Fix the link time qualifier of 'owl_uart_exit()' arm64: ftrace: Ensure synchronisation in PLT setup for Neoverse-N1 #1542419 nfs: Fix nfsi->nrequests count error on nfs_inode_remove_request HID: hyperv: Use in-place iterator API in the channel callback RDMA/iwcm: Fix a lock inversion issue RDMA/hfi1: Prevent memory leak in sdma_init staging: rtl8188eu: fix null dereference when kzalloc fails perf annotate: Return appropriate error code for allocation failures perf annotate: Propagate the symbol__annotate() error return perf annotate: Fix the signedness of failure returns perf annotate: Propagate perf_env__arch() error perf tools: Propagate get_cpuid() error perf jevents: Fix period for Intel fixed counters perf script brstackinsn: Fix recovery from LBR/binary mismatch perf map: Fix overlapped map handling perf tests: Avoid raising SEGV using an obvious NULL dereference libsubcmd: Make _FORTIFY_SOURCE defines dependent on the feature iio: fix center temperature of bmc150-accel-core iio: adc: meson_saradc: Fix memory allocation order power: supply: max14656: fix potential use-after-free drm/amd/display: fix odm combine pipe reset PCI/PME: Fix possible use-after-free on remove net: dsa: mv88e6xxx: Release lock while requesting IRQ exec: load_script: Do not exec truncated interpreter path ext4: disallow files with EXT4_JOURNAL_DATA_FL from EXT4_IOC_SWAP_BOOT media: vimc: Remove unused but set variables ALSA: hda/realtek - Apply ALC294 hp init also for S4 resume cifs: add credits from unmatched responses/messages CIFS: Respect SMB2 hdr preamble size in read responses scsi: lpfc: Correct localport timeout duration error mlxsw: spectrum: Set LAG port collector only when active arm64: kpti: Whitelist HiSilicon Taishan v110 CPUs arm64: Add MIDR encoding for HiSilicon Taishan CPUs rtc: pcf8523: set xtal load capacitance from DT usb: handle warm-reset port requests on hub resume ALSA: usb-audio: Cleanup DSD whitelist usb: dwc3: gadget: clear DWC3_EP_TRANSFER_STARTED on cmd complete usb: dwc3: gadget: early giveback if End Transfer already completed samples: bpf: fix: seg fault with NULL pointer arg HID: steam: fix deadlock with input devices. HID: steam: fix boot loop with bluetooth firmware NFSv4: Ensure that the state manager exits the loop on SIGKILL HID: Add ASUS T100CHI keyboard dock battery quirks staging: mt7621-pinctrl: use pinconf-generic for 'dt_node_to_map' and 'dt_free_map' scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks clk: boston: unregister clks on failure in clk_boston_setup() ath10k: assign 'n_cipher_suites = 11' for WCN3990 to enable WPA3 platform/x86: Fix config space access for intel_atomisp2_pm platform/x86: Add the VLV ISP PCI ID to atomisp2_pm HID: i2c-hid: Add Odys Winbook 13 to descriptor override HID: i2c-hid: Ignore input report if there's no data present on Elan touchpanels HID: i2c-hid: Disable runtime PM for LG touchscreen netfilter: ipset: Make invalid MAC address checks consistent Btrfs: fix deadlock on tree root leaf when finding free extent PCI: Fix Switchtec DMA aliasing quirk dmesg noise bcache: fix input overflow to writeback_rate_minimum drm/msm/dpu: handle failures while initializing displays x86/cpu: Add Atom Tremont (Jacobsville) tools/power turbostat: fix goldmont C-state limit decoding usb: dwc2: fix unbalanced use of external vbus-supply HID: i2c-hid: add Direkt-Tek DTLAPY133-1 to descriptor override f2fs: fix to recover inode->i_flags of inode block during POR f2fs: fix to recover inode's i_gc_failures during POR powerpc/powernv: hold device_hotplug_lock when calling memtrace_offline_pages() sc16is7xx: Fix for "Unexpected interrupt: 8" scsi: lpfc: Fix a duplicate 0711 log message number. f2fs: flush quota blocks after turnning it off wil6210: fix freeing of rx buffers in EDMA mode btrfs: tracepoints: Fix wrong parameter order for qgroup events btrfs: qgroup: Always free PREALLOC META reserve in btrfs_delalloc_release_extents() Btrfs: fix memory leak due to concurrent append writes with fiemap Btrfs: fix inode cache block reserve leak on failure to allocate data space dm snapshot: rework COW throttling to fix deadlock dm snapshot: introduce account_start_copy() and account_end_copy() zram: fix race between backing_dev_show and backing_dev_store Conflicts: arch/arm64/include/asm/cputype.h drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c drivers/net/wireless/ath/wil6210/txrx_edma.c drivers/usb/dwc3/gadget.c include/linux/cpu.h kernel/cpu.c Following USB commits were reverted on importing android-4.19.57 into msm-4.19 due to BootTimeRunner failure. android-4.19-q.82 introduced new usb changes [1] that fixed the regression, hence it is safe to restore the reverts. It is done in this merge. 9c423fd89("usb: dwc3: Reset num_trbs after skipping") 385cacd95("usb: dwc3: gadget: Clear req->needs_extra_trb flag on cleanup") 6edcdd0e6("usb: dwc3: gadget: remove wait_end_transfer") d7ff2e3ff("usb: dwc3: gadget: move requests to cancelled_list") bba5f9878("usb: dwc3: gadget: introduce cancelled_list") 65e1f3403("usb: dwc3: gadget: extract dwc3_gadget_ep_skip_trbs()") 56092bd50("usb: dwc3: gadget: use num_trbs when skipping TRBs on->dequeue()") 2a2b1c4dc("usb: dwc3: gadget: track number of TRBs per request") 420b1237c("usb: dwc3: gadget: combine unaligned and zero flags") 62805d319("Revert "usb: dwc3: gadget: Clear req->needs_extra_trb flag on cleanup"") [1] a0608eec29("usb: dwc3: gadget: clear DWC3_EP_TRANSFER_STARTED on cmd complete") d0e8b35e91("usb: dwc3: gadget: early giveback if End Transfer already completed") Change-Id: I77c3490d2c1cf7c8233a7e797c6f217f737621a2 Signed-off-by: Ivaylo Georgiev <irgeorgiev@codeaurora.org> |
||
|
Tyler Hicks
|
db5ae6596a |
cpu/speculation: Uninline and export CPU mitigations helpers
commit 731dc9df975a5da21237a18c3384f811a7a41cc6 upstream. A kernel module may need to check the value of the "mitigations=" kernel command line parameter as part of its setup when the module needs to perform software mitigations for a CPU flaw. Uninline and export the helper functions surrounding the cpu_mitigations enum to allow for their usage from a module. Lastly, privatize the enum and cpu_mitigations variable since the value of cpu_mitigations can be checked with the exported helper functions. Signed-off-by: Tyler Hicks <tyhicks@canonical.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Vineela Tummalapalli
|
f9aa6b73a4 |
x86/bugs: Add ITLB_MULTIHIT bug infrastructure
commit db4d30fbb71b47e4ecb11c4efa5d8aad4b03dfae upstream. Some processors may incur a machine check error possibly resulting in an unrecoverable CPU lockup when an instruction fetch encounters a TLB multi-hit in the instruction TLB. This can occur when the page size is changed along with either the physical address or cache type. The relevant erratum can be found here: https://bugzilla.kernel.org/show_bug.cgi?id=205195 There are other processors affected for which the erratum does not fully disclose the impact. This issue affects both bare-metal x86 page tables and EPT. It can be mitigated by either eliminating the use of large pages or by using careful TLB invalidations when changing the page size in the page tables. Just like Spectre, Meltdown, L1TF and MDS, a new bit has been allocated in MSR_IA32_ARCH_CAPABILITIES (PSCHANGE_MC_NO) and will be set on CPUs which are mitigated against this issue. Signed-off-by: Vineela Tummalapalli <vineela.tummalapalli@intel.com> Co-developed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Pawan Gupta
|
15dfa5d706 |
x86/speculation/taa: Add sysfs reporting for TSX Async Abort
commit 6608b45ac5ecb56f9e171252229c39580cc85f0f upstream. Add the sysfs reporting file for TSX Async Abort. It exposes the vulnerability and the mitigation state similar to the existing files for the other hardware vulnerabilities. Sysfs file path is: /sys/devices/system/cpu/vulnerabilities/tsx_async_abort Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Neelima Krishnan <neelima.krishnan@intel.com> Reviewed-by: Mark Gross <mgross@linux.intel.com> Reviewed-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Ivaylo Georgiev
|
4bcfb79fa8 |
Merge android-4.19.50 (be7c1cb) into msm-4.19
* refs/heads/tmp-be7c1cb: Linux 4.19.50 ethtool: check the return value of get_regs_len ipv4: Define __ipv4_neigh_lookup_noref when CONFIG_INET is disabled TTY: serial_core, add ->install drm/i915/gvt: Initialize intel_gvt_gtt_entry in stack drm: don't block fb changes for async plane updates drm/i915: Maintain consistent documentation subsection ordering drm/i915/fbc: disable framebuffer compression on GeminiLake drm/i915: Fix I915_EXEC_RING_MASK drm/amdgpu: remove ATPX_DGPU_REQ_POWER_FOR_DISPLAYS check when hotplug-in drm/radeon: prefer lower reference dividers drm/amdgpu/psp: move psp version specific function pointers to early_init drm: add non-desktop quirks to Sensics and OSVR headsets. drm/nouveau: add kconfig option to turn off nouveau legacy contexts. (v3) drm: add non-desktop quirk for Valve HMDs drm/msm: fix fb references in async update drm/gma500/cdv: Check vbt config bits when detecting lvds panels test_firmware: Use correct snprintf() limit genwqe: Prevent an integer overflow in the ioctl Revert "MIPS: perf: ath79: Fix perfcount IRQ assignment" MIPS: pistachio: Build uImage.gz by default MIPS: Bounds check virt_addr_valid xen-blkfront: switch kcalloc to kvcalloc for large array allocation s390/mm: fix address space detection in exception handling i2c: xiic: Add max_read_len quirk x86/insn-eval: Fix use-after-free access to LDT entry x86/power: Fix 'nosmt' vs hibernation triple fault during resume pstore/ram: Run without kernel crash dump region pstore: Set tfm to NULL on free_buf_for_compression pstore: Convert buf_lock to semaphore pstore: Remove needless lock during console writes fuse: fallocate: fix return with locked inode NFSv4.1: Fix bug only first CB_NOTIFY_LOCK is handled NFSv4.1: Again fix a race where CB_NOTIFY_LOCK fails to wake a waiter parisc: Use implicit space register selection for loading the coherence index of I/O pdirs rcu: locking and unlocking need to always be at least barriers mtd: spinand: macronix: Fix ECC Status Read ipv6: fix EFAULT on sendto with icmpv6 and hdrincl ipv6: use READ_ONCE() for inet->hdrincl as in ipv4 Revert "fib_rules: return 0 directly if an exactly same rule exists when NLM_F_EXCL not supplied" pktgen: do not sleep with the thread lock held. packet: unconditionally free po->rollover net/tls: replace the sleeping lock around RX resync with a bit lock net: sfp: read eeprom in maximum 16 byte increments net: rds: fix memory leak in rds_ib_flush_mr_pool net: mvpp2: Use strscpy to handle stat strings net/mlx4_en: ethtool, Remove unsupported SFP EEPROM high pages query net: ethernet: ti: cpsw_ethtool: fix ethtool ring param set neighbor: Call __ipv4_neigh_lookup_noref in neigh_xmit ipv6: fix the check before getting the cookie in rt6_get_cookie ipv4: not do cache for local delivery if bc_forwarding is enabled Fix memory leak in sctp_process_init ethtool: fix potential userspace buffer overflow Change-Id: Ic49494d073fe049a92a42dd95a84315b64a13c3e Signed-off-by: Ivaylo Georgiev <irgeorgiev@codeaurora.org> |
||
|
Ivaylo Georgiev
|
9c9859c5a6 |
Merge android-4.19.43 (c9415ba) into msm-4.19
* refs/heads/tmp-c9415ba: Linux 4.19.43 x86/speculation/mds: Fix documentation typo Documentation: Correct the possible MDS sysfs values x86/mds: Add MDSUM variant to the MDS documentation x86/speculation/mds: Add 'mitigations=' support for MDS s390/speculation: Support 'mitigations=' cmdline option powerpc/speculation: Support 'mitigations=' cmdline option x86/speculation: Support 'mitigations=' cmdline option cpu/speculation: Add 'mitigations=' cmdline option x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off x86/speculation/mds: Fix comment x86/speculation/mds: Add SMT warning message x86/speculation: Move arch_smt_update() call to after mitigation decisions x86/speculation/mds: Add mds=full,nosmt cmdline option Documentation: Add MDS vulnerability documentation Documentation: Move L1TF to separate directory x86/speculation/mds: Add mitigation mode VMWERV x86/speculation/mds: Add sysfs reporting for MDS x86/speculation/mds: Add mitigation control for MDS x86/speculation/mds: Conditionally clear CPU buffers on idle entry x86/kvm/vmx: Add MDS protection when L1D Flush is not active x86/speculation/mds: Clear CPU buffers on exit to user x86/speculation/mds: Add mds_clear_cpu_buffers() x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests x86/speculation/mds: Add BUG_MSBDS_ONLY x86/speculation/mds: Add basic bug infrastructure for MDS x86/speculation: Consolidate CPU whitelists x86/msr-index: Cleanup bit defines kvm: x86: Report STIBP on GET_SUPPORTED_CPUID x86/cpu: Sanitize FAM6_ATOM naming Documentation/l1tf: Fix small spelling typo Conflicts: include/linux/cpu.h kernel/cpu.c Change-Id: I53119b7026882924050dc680688db5597d172993 Signed-off-by: Ivaylo Georgiev <irgeorgiev@codeaurora.org> |
||
|
Jiri Kosina
|
4d166206cf |
x86/power: Fix 'nosmt' vs hibernation triple fault during resume
commit ec527c318036a65a083ef68d8ba95789d2212246 upstream. As explained in |
||
|
Josh Poimboeuf
|
8cb932aca5 |
cpu/speculation: Add 'mitigations=' cmdline option
commit 98af8452945c55652de68536afdde3b520fec429 upstream Keeping track of the number of mitigations for all the CPU speculation bugs has become overwhelming for many users. It's getting more and more complicated to decide which mitigations are needed for a given architecture. Complicating matters is the fact that each arch tends to have its own custom way to mitigate the same vulnerability. Most users fall into a few basic categories: a) they want all mitigations off; b) they want all reasonable mitigations on, with SMT enabled even if it's vulnerable; or c) they want all reasonable mitigations on, with SMT disabled if vulnerable. Define a set of curated, arch-independent options, each of which is an aggregation of existing options: - mitigations=off: Disable all mitigations. - mitigations=auto: [default] Enable all the default mitigations, but leave SMT enabled, even if it's vulnerable. - mitigations=auto,nosmt: Enable all the default mitigations, disabling SMT if needed by a mitigation. Currently, these options are placeholders which don't actually do anything. They will be fleshed out in upcoming patches. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Jiri Kosina <jkosina@suse.cz> (on x86) Reviewed-by: Jiri Kosina <jkosina@suse.cz> Cc: Borislav Petkov <bp@alien8.de> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: Waiman Long <longman@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Jon Masters <jcm@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux-s390@vger.kernel.org Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arch@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Tyler Hicks <tyhicks@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Steven Price <steven.price@arm.com> Cc: Phil Auld <pauld@redhat.com> Link: https://lkml.kernel.org/r/b07a8ef9b7c5055c3a4637c87d07c296d5016fe0.1555085500.git.jpoimboe@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Thomas Gleixner
|
8230c2028d |
x86/speculation/mds: Add sysfs reporting for MDS
commit 8a4b06d391b0a42a373808979b5028f5c84d9c6a upstream Add the sysfs reporting file for MDS. It exposes the vulnerability and mitigation state similar to the existing files for the other speculative hardware vulnerabilities. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Borislav Petkov <bp@suse.de> Reviewed-by: Jon Masters <jcm@redhat.com> Tested-by: Jon Masters <jcm@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Ivaylo Georgiev
|
9d1f53106a |
Merge android-4.19.21 (6e0411b) into msm-4.19
* refs/heads/tmp-6e0411b:
Revert "thermal: Fix locking in cooling device sysfs update cur_state"
Linux 4.19.21
ath9k: dynack: check da->enabled first in sampling routines
ath9k: dynack: make ewma estimation faster
perf/x86/intel: Delay memory deallocation until x86_pmu_dead_cpu()
IB/hfi1: Add limit test for RC/UC send via loopback
cacheinfo: Keep the old value if of_property_read_u32 fails
serial: sh-sci: Do not free irqs that have already been freed
serial: 8250_pci: Make PCI class test non fatal
serial: fix race between flush_to_ldisc and tty_open
perf tests evsel-tp-sched: Fix bitwise operator
perf/core: Don't WARN() for impossible ring-buffer sizes
x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()
perf/x86/intel/uncore: Add Node ID mask
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
KVM: nVMX: unconditionally cancel preemption timer in free_nested (CVE-2019-7221)
kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)
KVM: x86: work around leak of uninitialized stack contents (CVE-2019-7222)
scsi: aic94xx: fix module loading
scsi: cxlflash: Prevent deadlock when adapter probe fails
staging: speakup: fix tty-operation NULL derefs
usb: gadget: musb: fix short isoc packets with inventra dma
usb: gadget: udc: net2272: Fix bitwise and boolean operations
usb: dwc3: gadget: Handle 0 xfer length for OUT EP
usb: phy: am335x: fix race condition in _probe
irqchip/gic-v3-its: Plug allocation race for devices sharing a DevID
futex: Handle early deadlock return correctly
dmaengine: imx-dma: fix wrong callback invoke
dmaengine: bcm2835: Fix abort of transactions
dmaengine: bcm2835: Fix interrupt race on RT
HID: debug: fix the ring buffer implementation
fuse: handle zero sized retrieve correctly
fuse: decrement NR_WRITEBACK_TEMP on the right page
fuse: call pipe_buf_release() under pipe lock
ALSA: hda/realtek - Headset microphone support for System76 darp5
ALSA: hda/realtek - Use a common helper for hp pin reference
ALSA: hda/realtek - Fix lose hp_pins for disable auto mute
ALSA: hda - Serialize codec registrations
ALSA: usb-audio: Add support for new T+A USB DAC
ALSA: compress: Fix stop handling on compressed capture streams
xfs: eof trim writeback mapping as soon as it is cached
net/mlx5e: FPGA, fix Innova IPsec TX offload data path performance
virtio_net: Account for tx bytes and packets on sending xdp_frames
skge: potential memory corruption in skge_get_regs()
sctp: walk the list of asoc safely
sctp: check and update stream->out_curr when allocating stream_out
rxrpc: bad unlock balance in rxrpc_recvmsg
Revert "net: phy: marvell: avoid pause mode on SGMII-to-Copper for 88e151x"
rds: fix refcount bug in rds_sock_addref
net: systemport: Fix WoL with password after deep sleep
net/mlx5e: Force CHECKSUM_UNNECESSARY for short ethernet frames
net: dsa: slave: Don't propagate flag changes on down slave interfaces
net: dsa: mv88e6xxx: Fix counting of ATU violations
net: dsa: Fix NULL checking in dsa_slave_set_eee()
net: dsa: Fix lockdep false positive splat
net: dp83640: expire old TX-skb
lib/test_rhashtable: Make test_insert_dup() allocate its hash table dynamically
enic: fix checksum validation for IPv6
dccp: fool proof ccid_hc_[rt]x_parse_options()
thermal: hwmon: inline helpers when CONFIG_THERMAL_HWMON is not set
xfs: fix inverted return from xfs_btree_sblock_verify_crc
xfs: fix PAGE_MASK usage in xfs_free_file_space
fs/xfs: fix f_ffree value for statfs when project quota is set
xfs: delalloc -> unwritten COW fork allocation can go wrong
xfs: fix transient reference count error in xfs_buf_resubmit_failed_buffers
xfs: fix shared extent data corruption due to missing cow reservation
xfs: fix overflow in xfs_attr3_leaf_verify
xfs: Fix error code in 'xfs_ioc_getbmap()'
xfs: cancel COW blocks before swapext
xfs: Fix xqmstats offsets in /proc/fs/xfs/xqmstat
scripts/gdb: fix lx-version string output
kernel/kcov.c: mark write_comp_data() as notrace
exec: load_script: don't blindly truncate shebang string
fs/epoll: drop ovflist branch prediction
kernel/hung_task.c: force console verbose before panic
proc/sysctl: fix return error for proc_doulongvec_minmax()
kernel/hung_task.c: break RCU locks based on jiffies
arm64/sve: ptrace: Fix SVE_PT_REGS_OFFSET definition
HID: lenovo: Add checks to fix of_led_classdev_register
thermal: generic-adc: Fix adc to temp interpolation
PCI: imx: Enable MSI from downstream components
kdb: Don't back trace on a cpu that didn't round up
thermal: bcm2835: enable hwmon explicitly
block/swim3: Fix -EBUSY error when re-opening device after unmount
fsl/fman: Use GFP_ATOMIC in {memac,tgec}_add_hash_mac_address()
gdrom: fix a memory leak bug
isdn: hisax: hfc_pci: Fix a possible concurrency use-after-free bug in HFCPCI_l1hw()
zram: fix lockdep warning of free block handling
mm/page_alloc.c: don't call kasan_free_pages() at deferred mem init
ocfs2: improve ocfs2 Makefile
ocfs2: don't clear bh uptodate for block read
arch/sh/boards/mach-kfr2r09/setup.c: fix struct mtd_oob_ops build warning
scripts/decode_stacktrace: only strip base path when a prefix of the path
perf python: Do not force closing original perf descriptor in evlist.get_pollfd()
cgroup: fix parsing empty mount option string
f2fs: fix sbi->extent_list corruption issue
niu: fix missing checks of niu_pci_eeprom_read
um: Avoid marking pages with "changed protection"
f2fs: fix use-after-free issue when accessing sbi->stat_info
cifs: check ntwrk_buf_start for NULL before dereferencing it
MIPS: ralink: Select CONFIG_CPU_MIPSR2_IRQ_VI on MT7620/8
crypto: ux500 - Use proper enum in hash_set_dma_transfer
crypto: ux500 - Use proper enum in cryp_set_dma_transfer
seq_buf: Make seq_buf_puts() null-terminate the buffer
hwmon: (lm80) fix a missing check of bus read in lm80 probe
hwmon: (lm80) fix a missing check of the status of SMBus read
perf build: Don't unconditionally link the libbfd feature test to -liberty and -lz
NFS: nfs_compare_mount_options always compare auth flavors.
kvm: Change offset in kvm_write_guest_offset_cached to unsigned
powerpc/fadump: Do not allow hot-remove memory from fadump reserved area.
KVM: x86: svm: report MSR_IA32_MCG_EXT_CTL as unsupported
pinctrl: meson: meson8b: fix the GPIO function for the GPIOAO pins
pinctrl: meson: meson8: fix the GPIO function for the GPIOAO pins
powerpc/mm: Fix reporting of kernel execute faults on the 8xx
fbdev: fbcon: Fix unregister crash when more than one framebuffer
ACPI/APEI: Clear GHES block_status before panic()
igb: Fix an issue that PME is not enabled during runtime suspend
ice: Do not enable NAPI on q_vectors that have no rings
i40e: define proper net_device::neigh_priv_len
fbdev: fbmem: behave better with small rotated displays and many CPUs
md: fix raid10 hang issue caused by barrier
video: clps711x-fb: release disp device node in probe()
drm/amd/display: validate extended dongle caps
drbd: Avoid Clang warning about pointless switch statment
drbd: skip spurious timeout (ping-timeo) when failing promote
drbd: disconnect, if the wrong UUIDs are attached on a connected peer
drbd: narrow rcu_read_lock in drbd_sync_handshake
mlx5: update timecounter at least twice per counter overflow
powerpc/powernv/ioda: Allocate indirect TCE levels of cached userspace addresses on demand
iwlwifi: mvm: fix setting HE ppe FW config
powerpc/perf: Fix thresholding counter data for unknown type
net: hns3: add max vector number check for pf
cw1200: Fix concurrency use-after-free bugs in cw1200_hw_scan()
scsi: smartpqi: increase fw status register read timeout
scsi: smartpqi: correct volume status
scsi: smartpqi: correct host serial num for ssa
mlxsw: spectrum: Properly cleanup LAG uppers when removing port from LAG
xfrm6_tunnel: Fix spi check in __xfrm6_tunnel_alloc_spi
mac80211: fix radiotap vendor presence bitmap handling
powerpc/uaccess: fix warning/error with access_ok()
drm/amd/display: fix YCbCr420 blank color
Bluetooth: hci_bcm: Handle deferred probing for the clock supply
drm/amd/display: Add retry to read ddc_clock pin
net: hns3: fix incomplete uninitialization of IRQ in the hns3_nic_uninit_vector_data()
percpu: convert spin_lock_irq to spin_lock_irqsave.
perf tools: Cast off_t to s64 to avoid warning on bionic libc
perf header: Fix up argument to ctime()
usb: musb: dsps: fix runtime pm for peripheral mode
usb: musb: dsps: fix otg state machine
arm64: KVM: Skip MMIO insn after emulation
livepatch: check kzalloc return values
tools/power/x86/intel_pstate_tracer: Fix non root execution for post processing a trace file
bnxt_en: Disable MSIX before re-reserving NQs/CMPL rings.
i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)
perf probe: Fix unchecked usage of strncpy()
btrfs: use tagged writepage to mitigate livelock of snapshot
perf header: Fix unchecked usage of strncpy()
perf dso: Fix unchecked usage of strncpy()
perf test: Fix perf_event_attr test failure
tty: serial: samsung: Properly set flags in autoCTS mode
serial: sh-sci: Resume PIO in sci_rx_interrupt() on DMA failure
serial: sh-sci: Fix locking in sci_submit_rx()
btrfs: harden agaist duplicate fsid on scanned devices
usb: renesas_usbhs: add support for RZ/G2E
mmc: jz4740: Get CD/WP GPIOs from descriptors
mmc: sdhci-xenon: Fix timeout checks
mmc: sdhci-omap: Fix timeout checks
mmc: sdhci-of-esdhc: Fix timeout checks
memstick: Prevent memstick host from getting runtime suspended during card detection
mmc: meson-mx-sdio: check devm_kasprintf for failure
mmc: bcm2835: reset host on timeout
mmc: bcm2835: Recover from MMC_SEND_EXT_CSD
KVM: PPC: Book3S: Only report KVM_CAP_SPAPR_TCE_VFIO on powernv machines
ASoC: fsl: Fix SND_SOC_EUKREA_TLV320 build error on i.MX8M
ARM: pxa: avoid section mismatch warning
selftests/bpf: use __bpf_constant_htons in test_prog.c
switchtec: Fix SWITCHTEC_IOCTL_EVENT_IDX_ALL flags overwrite
udf: Fix BUG on corrupted inode
mlxsw: spectrum_acl: Limit priority value
phy: sun4i-usb: add support for missing USB PHY index
i2c-axxia: check for error conditions first
lightnvm: pblk: add lock protection to list operations
lightnvm: pblk: fix resubmission of overwritten write err lbas
drm/msm: dpu: Only check flush register against pending flushes
drm/msm/dsi: fix dsi clock names in DSI 10nm PLL driver
tee: optee: avoid possible double list_del()
OPP: Use opp_table->regulators to verify no regulator case
cpuidle: big.LITTLE: fix refcount leak
platform/x86: mlx-platform: Fix tachometer registers
clk: imx6sl: ensure MMDC CH0 handshake is bypassed
sata_rcar: fix deferred probing
iommu/arm-smmu-v3: Use explicit mb() when moving cons pointer
iommu/arm-smmu: Add support for qcom,smmu-v2 variant
iommu/arm-smmu-v3: Avoid memory corruption from Hisilicon MSI payloads
usb: dwc3: gadget: Disable CSP for stream OUT ep
ARM: dts: imx51-zii-rdu1: Do not specify "power-gpio" for hpa1
watchdog: renesas_wdt: don't set divider while watchdog is running
ARM: dts: Fix up the D-Link DIR-685 MTD partition info
media: coda: fix H.264 deblocking filter controls
mips: bpf: fix encoding bug for mm_srlv32_op
ARM: dts: Fix OMAP4430 SDP Ethernet startup
iommu/amd: Fix amd_iommu=force_isolation
pinctrl: sx150x: handle failure case of devm_kstrdup
gpio: mt7621: pass mediatek_gpio_bank_probe() failure up the stack
gpio: mt7621: report failure of devm_kasprintf()
usb: dwc3: trace: add missing break statement to make compiler happy
IB/hfi1: Unreserve a reserved request when it is completed
kobject: return error code if writing /sys/.../uevent fails
driver core: Move async_synchronize_full call
tipc: fix node keep alive interval calculation
drm/amdgpu/powerplay: fix clock stretcher limits on polaris (v2)
media: imx274: select REGMAP_I2C
clk: sunxi-ng: a33: Set CLK_SET_RATE_PARENT for all audio module clocks
usb: mtu3: fix the issue about SetFeature(U1/U2_Enable)
timekeeping: Use proper seqcount initializer
usb: hub: delay hub autosuspend if USB3 port is still link training
usb: dwc2: Disable power down feature on Samsung SoCs
usb: dwc3: Correct the logic for checking TRB full in __dwc3_prepare_one_trb()
xtensa: xtfpga.dtsi: fix dtc warnings about SPI
smack: fix access permissions for keyring
media: DaVinci-VPBE: fix error handling in vpbe_initialize()
media: i2c: TDA1997x: select CONFIG_HDMI
x86/fpu: Add might_fault() to user_insn()
ARM: dts: aspeed: add missing memory unit-address
ARM: dts: mmp2: fix TWSI2
drm/v3d: Fix prime imports of buffers from other drivers.
arm64: ftrace: don't adjust the LR value
mt76x0: dfs: fix IBI_R11 configuration on non-radar channels
s390/zcrypt: improve special ap message cmd handling
firmware/efi: Add NULL pointer checks in efivars API functions
thermal: Fix locking in cooling device sysfs update cur_state
Thermal: do not clear passive state during system sleep
arm64: io: Ensure value passed to __iormb() is held in a 64-bit register
perf: arm_spe: handle devm_kasprintf() failure
drm: Clear state->acquire_ctx before leaving drm_atomic_helper_commit_duplicated_state()
nfsd4: fix crash on writing v4_end_grace before nfsd startup
soc: bcm: brcmstb: Don't leak device tree node reference
sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN
net: aquantia: return 'err' if set MPI_DEINIT state fails
arm64: io: Ensure calls to delay routines are ordered against prior readX()
i2c: sh_mobile: add support for r8a77990 (R-Car E3)
f2fs: fix wrong return value of f2fs_acl_create
f2fs: fix race between write_checkpoint and write_begin
f2fs: move dir data flush to write checkpoint process
staging: pi433: fix potential null dereference
ACPI: SPCR: Consider baud rate 0 as preconfigured state
media: adv*/tc358743/ths8200: fill in min width/height/pixelclock
iio: accel: kxcjk1013: Add KIOX010A ACPI Hardware-ID
iio: adc: meson-saradc: fix internal clock names
iio: adc: meson-saradc: check for devm_kasprintf failure
powerpc/32: Add .data..Lubsan_data*/.data..Lubsan_type* sections explicitly
dmaengine: xilinx_dma: Remove __aligned attribute on zynqmp_dma_desc_ll
ptp: Fix pass zero to ERR_PTR() in ptp_clock_register
clk: meson: meson8b: mark the CPU clock as CLK_IS_CRITICAL
clk: meson: meson8b: fix the width of the cpu_scale_div clock
clk: meson: meson8b: do not use cpu_div3 for cpu_scale_out_sel
staging: erofs: fix the definition of DBG_BUGON
media: mtk-vcodec: Release device nodes in mtk_vcodec_init_enc_pm()
media: video-i2c: avoid accessing released memory area when removing driver
media: rc: ensure close() is called on rc_unregister_device
soc/tegra: Don't leak device tree node reference
perf tools: Add Hygon Dhyana support
modpost: validate symbol names also in find_elf_symbol
net/mlx5: EQ, Use the right place to store/read IRQ affinity hint
bpf: libbpf: retry map creation without the name
drm/amd/display: calculate stream->phy_pix_clk before clock mapping
drm/amd/display: fix gamma not being applied correctly
ARM: OMAP2+: hwmod: Fix some section annotations
drm/rockchip: fix for mailbox read size
usbnet: smsc95xx: fix rx packet alignment
staging: iio: ad7780: update voltage on read
scsi: hisi_sas: change the time of SAS SSP connection
i40e: prevent overlapping tx_timeout recover
platform/chrome: don't report EC_MKBP_EVENT_SENSOR_FIFO as wakeup
vbox: fix link error with 'gcc -Og'
fpga: altera-cvp: fix 'bad IO access' on x86_64
Tools: hv: kvp: Fix a warning of buffer overflow with gcc 8.0.1
fpga: altera-cvp: Fix registration for CvP incapable devices
staging:iio:ad2s90: Make probe handle spi_setup failure
iwlwifi: fw: do not set sgi bits for HE connection
dpaa2-ptp: defer probe when portal allocation failed
MIPS: Boston: Disable EG20T prefetch
ptp: check gettime64 return code in PTP_SYS_OFFSET ioctl
serial: fsl_lpuart: clear parity enable bit when disable parity
drm/vc4: ->x_scaling[1] should never be set to VC4_SCALING_NONE
crypto: aes_ti - disable interrupts while accessing S-box
powerpc/pseries: add of_node_put() in dlpar_detach_node()
x86/PCI: Fix Broadcom CNB20LE unintended sign extension (redux)
dlm: Don't swamp the CPU with callbacks queued during recovery
clk: boston: fix possible memory leak in clk_boston_setup()
ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
scsi: lpfc: Fix LOGO/PLOGI handling when triggerd by ABTS Timeout event
scsi: mpt3sas: Call sas_remove_host before removing the target devices
scsi: lpfc: Correct LCB RJT handling
ath9k: dynack: use authentication messages for 'late' ack
ath10k: assign 'n_cipher_suites' for WCN3990
wil6210: fix memory leak in wil_find_tx_bcast_2
wil6210: fix reset flow for Talyn-mb
nds32: Fix gcc 8.0 compiler option incompatible.
gpu: ipu-v3: image-convert: Prevent race between run and unprepare
genirq/affinity: Spread IRQs to all available NUMA nodes
drm/sun4i: Initialize registers in tcon-top driver
gpiolib: Fix possible use after free on label
ASoC: Intel: mrfld: fix uninitialized variable access
pinctrl: bcm2835: Use raw spinlock for RT compatibility
drm/vgem: Fix vgem_init to get drm device available.
staging: iio: adc: ad7280a: handle error from __ad7280_read32()
drm/bufs: Fix Spectre v1 vulnerability
devres: Align data[] to ARCH_KMALLOC_MINALIGN
ANDROID: Turn xt_owner module on
UPSTREAM: virt_wifi: fix error return code in virt_wifi_newlink()
Conflicts:
arch/arm64/include/asm/io.h
drivers/iommu/arm-smmu.c
drivers/thermal/thermal_core.c
Change-Id: Ic348640eaeb3501bfc61d0b6907b7fcbb83f5118
Signed-off-by: Ivaylo Georgiev <irgeorgiev@codeaurora.org>
|
||
|
Josh Poimboeuf
|
97a7fa90ea |
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
commit b284909abad48b07d3071a9fc9b5692b3e64914b upstream. With the following commit: |
||
|
Amit Pundir
|
dd81d8a66f |
ANDROID: idle_notifier: Add generic idle notifiers
AOSP Change-ID: Idf29cda15be151f494ff245933c12462643388d5
moved x86_64 idle notifiers as generic so that they can
be used in interactive governor.
Upstream change
|
||
|
Linus Torvalds
|
b018fc9800 |
Merge tag 'pm-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add a new framework for CPU idle time injection, to be used by
all of the idle injection code in the kernel in the future, fix some
issues and add a number of relatively small extensions in multiple
places.
Specifics:
- Add a new framework for CPU idle time injection (Daniel Lezcano).
- Add AVS support to the armada-37xx cpufreq driver (Gregory
CLEMENT).
- Add support for current CPU frequency reporting to the ACPI CPPC
cpufreq driver (George Cherian).
- Rework the cooling device registration in the imx6q/thermal driver
(Bastian Stender).
- Make the pcc-cpufreq driver refuse to work with dynamic scaling
governors on systems with many CPUs to avoid scalability issues
with it (Rafael Wysocki).
- Fix the intel_pstate driver to report different maximum CPU
frequencies on systems where they really are different and to
ignore the turbo active ratio if hardware-managend P-states (HWP)
are in use; make it use the match_string() helper (Xie Yisheng,
Srinivas Pandruvada).
- Fix a minor deferred probe issue in the qcom-kryo cpufreq driver
(Niklas Cassel).
- Add a tracepoint for the tracking of frequency limits changes (from
Andriod) to the cpufreq core (Ruchi Kandoi).
- Fix a circular lock dependency between CPU hotplug and sysfs
locking in the cpufreq core reported by lockdep (Waiman Long).
- Avoid excessive error reports on driver registration failures in
the ARM cpuidle driver (Sudeep Holla).
- Add a new device links flag to the driver core to make links go
away automatically on supplier driver removal (Vivek Gautam).
- Eliminate potential race condition between system-wide power
management transitions and system shutdown (Pingfan Liu).
- Add a quirk to save NVS memory on system suspend for the ASUS 1025C
laptop (Willy Tarreau).
- Make more systems use suspend-to-idle (instead of ACPI S3) by
default (Tristian Celestin).
- Get rid of stack VLA usage in the low-level hibernation code on
64-bit x86 (Kees Cook).
- Fix error handling in the hibernation core and mark an expected
fall-through switch in it (Chengguang Xu, Gustavo Silva).
- Extend the generic power domains (genpd) framework to support
attaching a device to a power domain by name (Ulf Hansson).
- Fix device reference counting and user limits initialization in the
devfreq core (Arvind Yadav, Matthias Kaehlcke).
- Fix a few issues in the rk3399_dmc devfreq driver and improve its
documentation (Enric Balletbo i Serra, Lin Huang, Nick Milner).
- Drop a redundant error message from the exynos-ppmu devfreq driver
(Markus Elfring)"
* tag 'pm-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (35 commits)
PM / reboot: Eliminate race between reboot and suspend
PM / hibernate: Mark expected switch fall-through
cpufreq: intel_pstate: Ignore turbo active ratio in HWP
cpufreq: Fix a circular lock dependency problem
cpu/hotplug: Add a cpus_read_trylock() function
x86/power/hibernate_64: Remove VLA usage
cpufreq: trace frequency limits change
cpufreq: intel_pstate: Show different max frequency with turbo 3 and HWP
cpufreq: pcc-cpufreq: Disable dynamic scaling on many-CPU systems
cpufreq: qcom-kryo: Silently error out on EPROBE_DEFER
cpufreq / CPPC: Add cpuinfo_cur_freq support for CPPC
cpufreq: armada-37xx: Add AVS support
dt-bindings: marvell: Add documentation for the Armada 3700 AVS binding
PM / devfreq: rk3399_dmc: Fix duplicated opp table on reload.
PM / devfreq: Init user limits from OPP limits, not viceversa
PM / devfreq: rk3399_dmc: fix spelling mistakes.
PM / devfreq: rk3399_dmc: do not print error when get supply and clk defer.
dt-bindings: devfreq: rk3399_dmc: move interrupts to be optional.
PM / devfreq: rk3399_dmc: remove wait for dcf irq event.
dt-bindings: clock: add rk3399 DDR3 standard speed bins.
...
|
||
|
Linus Torvalds
|
958f338e96 |
Merge branch 'l1tf-final' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Merge L1 Terminal Fault fixes from Thomas Gleixner:
"L1TF, aka L1 Terminal Fault, is yet another speculative hardware
engineering trainwreck. It's a hardware vulnerability which allows
unprivileged speculative access to data which is available in the
Level 1 Data Cache when the page table entry controlling the virtual
address, which is used for the access, has the Present bit cleared or
other reserved bits set.
If an instruction accesses a virtual address for which the relevant
page table entry (PTE) has the Present bit cleared or other reserved
bits set, then speculative execution ignores the invalid PTE and loads
the referenced data if it is present in the Level 1 Data Cache, as if
the page referenced by the address bits in the PTE was still present
and accessible.
While this is a purely speculative mechanism and the instruction will
raise a page fault when it is retired eventually, the pure act of
loading the data and making it available to other speculative
instructions opens up the opportunity for side channel attacks to
unprivileged malicious code, similar to the Meltdown attack.
While Meltdown breaks the user space to kernel space protection, L1TF
allows to attack any physical memory address in the system and the
attack works across all protection domains. It allows an attack of SGX
and also works from inside virtual machines because the speculation
bypasses the extended page table (EPT) protection mechanism.
The assoicated CVEs are: CVE-2018-3615, CVE-2018-3620, CVE-2018-3646
The mitigations provided by this pull request include:
- Host side protection by inverting the upper address bits of a non
present page table entry so the entry points to uncacheable memory.
- Hypervisor protection by flushing L1 Data Cache on VMENTER.
- SMT (HyperThreading) control knobs, which allow to 'turn off' SMT
by offlining the sibling CPU threads. The knobs are available on
the kernel command line and at runtime via sysfs
- Control knobs for the hypervisor mitigation, related to L1D flush
and SMT control. The knobs are available on the kernel command line
and at runtime via sysfs
- Extensive documentation about L1TF including various degrees of
mitigations.
Thanks to all people who have contributed to this in various ways -
patches, review, testing, backporting - and the fruitful, sometimes
heated, but at the end constructive discussions.
There is work in progress to provide other forms of mitigations, which
might be less horrible performance wise for a particular kind of
workloads, but this is not yet ready for consumption due to their
complexity and limitations"
* 'l1tf-final' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
x86/microcode: Allow late microcode loading with SMT disabled
tools headers: Synchronise x86 cpufeatures.h for L1TF additions
x86/mm/kmmio: Make the tracer robust against L1TF
x86/mm/pat: Make set_memory_np() L1TF safe
x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert
x86/speculation/l1tf: Invert all not present mappings
cpu/hotplug: Fix SMT supported evaluation
KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry
x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry
x86/speculation: Simplify sysfs report of VMX L1TF vulnerability
Documentation/l1tf: Remove Yonah processors from not vulnerable list
x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()
x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d
x86: Don't include linux/irq.h from asm/hardirq.h
x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d
x86/irq: Demote irq_cpustat_t::__softirq_pending to u16
x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush()
x86/KVM/VMX: Replace 'vmx_l1d_flush_always' with 'vmx_l1d_flush_cond'
x86/KVM/VMX: Don't set l1tf_flush_l1d to true from vmx_l1d_flush()
cpu/hotplug: detect SMT disabled by BIOS
...
|
||
|
Linus Torvalds
|
b5b1404d08 |
init: rename and re-order boot_cpu_state_init()
This is purely a preparatory patch for upcoming changes during the 4.19 merge window. We have a function called "boot_cpu_state_init()" that isn't really about the bootup cpu state: that is done much earlier by the similarly named "boot_cpu_init()" (note lack of "state" in name). This function initializes some hotplug CPU state, and needs to run after the percpu data has been properly initialized. It even has a comment to that effect. Except it _doesn't_ actually run after the percpu data has been properly initialized. On x86 it happens to do that, but on at least arm and arm64, the percpu base pointers are initialized by the arch-specific 'smp_prepare_boot_cpu()' hook, which ran _after_ boot_cpu_state_init(). This had some unexpected results, and in particular we have a patch pending for the merge window that did the obvious cleanup of using 'this_cpu_write()' in the cpu hotplug init code: - per_cpu_ptr(&cpuhp_state, smp_processor_id())->state = CPUHP_ONLINE; + this_cpu_write(cpuhp_state.state, CPUHP_ONLINE); which is obviously the right thing to do. Except because of the ordering issue, it actually failed miserably and unexpectedly on arm64. So this just fixes the ordering, and changes the name of the function to be 'boot_cpu_hotplug_init()' to make it obvious that it's about cpu hotplug state, because the core CPU state was supposed to have already been done earlier. Marked for stable, since the (not yet merged) patch that will show this problem is marked for stable. Reported-by: Vlastimil Babka <vbabka@suse.cz> Reported-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com> Suggested-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Thomas Gleixner
|
bc2d8d262c |
cpu/hotplug: Fix SMT supported evaluation
Josh reported that the late SMT evaluation in cpu_smt_state_init() sets
cpu_smt_control to CPU_SMT_NOT_SUPPORTED in case that 'nosmt' was supplied
on the kernel command line as it cannot differentiate between SMT disabled
by BIOS and SMT soft disable via 'nosmt'. That wreckages the state and
makes the sysfs interface unusable.
Rework this so that during bringup of the non boot CPUs the availability of
SMT is determined in cpu_smt_allowed(). If a newly booted CPU is not a
'primary' thread then set the local cpu_smt_available marker and evaluate
this explicitely right after the initial SMP bringup has finished.
SMT evaulation on x86 is a trainwreck as the firmware has all the
information _before_ booting the kernel, but there is no interface to query
it.
Fixes:
|
||
|
Waiman Long
|
6f4ceee930 |
cpu/hotplug: Add a cpus_read_trylock() function
There are use cases where it can be useful to have a cpus_read_trylock() function to work around circular lock dependency problem involving the cpu_hotplug_lock. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Thomas Gleixner
|
fee0aede6f |
cpu/hotplug: Set CPU_SMT_NOT_SUPPORTED early
The CPU_SMT_NOT_SUPPORTED state is set (if the processor does not support SMT) when the sysfs SMT control file is initialized. That was fine so far as this was only required to make the output of the control file correct and to prevent writes in that case. With the upcoming l1tf command line parameter, this needs to be set up before the L1TF mitigation selection and command line parsing happens. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Jiri Kosina <jkosina@suse.cz> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lkml.kernel.org/r/20180713142323.121795971@linutronix.de |
||
|
Jiri Kosina
|
8e1b706b6e |
cpu/hotplug: Expose SMT control init function
The L1TF mitigation will gain a commend line parameter which allows to set a combination of hypervisor mitigation and SMT control. Expose cpu_smt_disable() so the command line parser can tweak SMT settings. [ tglx: Split out of larger patch and made it preserve an already existing force off state ] Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Jiri Kosina <jkosina@suse.cz> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lkml.kernel.org/r/20180713142323.039715135@linutronix.de |
||
|
Thomas Gleixner
|
05736e4ac1 |
cpu/hotplug: Provide knobs to control SMT
Provide a command line and a sysfs knob to control SMT. The command line options are: 'nosmt': Enumerate secondary threads, but do not online them 'nosmt=force': Ignore secondary threads completely during enumeration via MP table and ACPI/MADT. The sysfs control file has the following states (read/write): 'on': SMT is enabled. Secondary threads can be freely onlined 'off': SMT is disabled. Secondary threads, even if enumerated cannot be onlined 'forceoff': SMT is permanentely disabled. Writes to the control file are rejected. 'notsupported': SMT is not supported by the CPU The command line option 'nosmt' sets the sysfs control to 'off'. This can be changed to 'on' to reenable SMT during runtime. The command line option 'nosmt=force' sets the sysfs control to 'forceoff'. This cannot be changed during runtime. When SMT is 'on' and the control file is changed to 'off' then all online secondary threads are offlined and attempts to online a secondary thread later on are rejected. When SMT is 'off' and the control file is changed to 'on' then secondary threads can be onlined again. The 'off' -> 'on' transition does not automatically online the secondary threads. When the control file is set to 'forceoff', the behaviour is the same as setting it to 'off', but the operation is irreversible and later writes to the control file are rejected. When the control status is 'notsupported' then writes to the control file are rejected. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> |
||
|
Andi Kleen
|
17dbca1193 |
x86/speculation/l1tf: Add sysfs reporting for l1tf
L1TF core kernel workarounds are cheap and normally always enabled, However they still should be reported in sysfs if the system is vulnerable or mitigated. Add the necessary CPU feature/bug bits. - Extend the existing checks for Meltdowns to determine if the system is vulnerable. All CPUs which are not vulnerable to Meltdown are also not vulnerable to L1TF - Check for 32bit non PAE and emit a warning as there is no practical way for mitigation due to the limited physical address bits - If the system has more than MAX_PA/2 physical memory the invert page workarounds don't protect the system against the L1TF attack anymore, because an inverted physical address will also point to valid memory. Print a warning in this case and report that the system is vulnerable. Add a function which returns the PFN limit for the L1TF mitigation, which will be used in follow up patches for sanity and range checks. [ tglx: Renamed the CPU feature bit to L1TF_PTEINV ] Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Dave Hansen <dave.hansen@intel.com> |
||
|
Konrad Rzeszutek Wilk
|
c456442cd3 |
x86/bugs: Expose /sys/../spec_store_bypass
Add the sysfs file for the new vulerability. It does not do much except show the words 'Vulnerable' for recent x86 cores. Intel cores prior to family 6 are known not to be vulnerable, and so are some Atoms and some Xeon Phi. It assumes that older Cyrix, Centaur, etc. cores are immune. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@suse.de> Reviewed-by: Ingo Molnar <mingo@kernel.org> |
||
|
Linus Torvalds
|
40548c6b6c |
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 pti updates from Thomas Gleixner:
"This contains:
- a PTI bugfix to avoid setting reserved CR3 bits when PCID is
disabled. This seems to cause issues on a virtual machine at least
and is incorrect according to the AMD manual.
- a PTI bugfix which disables the perf BTS facility if PTI is
enabled. The BTS AUX buffer is not globally visible and causes the
CPU to fault when the mapping disappears on switching CR3 to user
space. A full fix which restores BTS on PTI is non trivial and will
be worked on.
- PTI bugfixes for EFI and trusted boot which make sure that the user
space visible page table entries have the NX bit cleared
- removal of dead code in the PTI pagetable setup functions
- add PTI documentation
- add a selftest for vsyscall to verify that the kernel actually
implements what it advertises.
- a sysfs interface to expose vulnerability and mitigation
information so there is a coherent way for users to retrieve the
status.
- the initial spectre_v2 mitigations, aka retpoline:
+ The necessary ASM thunk and compiler support
+ The ASM variants of retpoline and the conversion of affected ASM
code
+ Make LFENCE serializing on AMD so it can be used as speculation
trap
+ The RSB fill after vmexit
- initial objtool support for retpoline
As I said in the status mail this is the most of the set of patches
which should go into 4.15 except two straight forward patches still on
hold:
- the retpoline add on of LFENCE which waits for ACKs
- the RSB fill after context switch
Both should be ready to go early next week and with that we'll have
covered the major holes of spectre_v2 and go back to normality"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
x86,perf: Disable intel_bts when PTI
security/Kconfig: Correct the Documentation reference for PTI
x86/pti: Fix !PCID and sanitize defines
selftests/x86: Add test_vsyscall
x86/retpoline: Fill return stack buffer on vmexit
x86/retpoline/irq32: Convert assembler indirect jumps
x86/retpoline/checksum32: Convert assembler indirect jumps
x86/retpoline/xen: Convert Xen hypercall indirect jumps
x86/retpoline/hyperv: Convert assembler indirect jumps
x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
x86/retpoline/entry: Convert entry assembler indirect jumps
x86/retpoline/crypto: Convert crypto assembler indirect jumps
x86/spectre: Add boot time option to select Spectre v2 mitigation
x86/retpoline: Add initial retpoline support
objtool: Allow alternatives to be ignored
objtool: Detect jumps to retpoline thunks
x86/pti: Make unpoison of pgd for trusted boot work for real
x86/alternatives: Fix optimize_nops() checking
sysfs/cpu: Fix typos in vulnerability documentation
x86/cpu/AMD: Use LFENCE_RDTSC in preference to MFENCE_RDTSC
...
|
||
|
Thomas Gleixner
|
87590ce6e3 |
sysfs/cpu: Add vulnerability folder
As the meltdown/spectre problem affects several CPU architectures, it makes sense to have common way to express whether a system is affected by a particular vulnerability or not. If affected the way to express the mitigation should be common as well. Create /sys/devices/system/cpu/vulnerabilities folder and files for meltdown, spectre_v1 and spectre_v2. Allow architectures to override the show function. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Linus Torvalds <torvalds@linuxfoundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: David Woodhouse <dwmw@amazon.co.uk> Link: https://lkml.kernel.org/r/20180107214913.096657732@linutronix.de |
||
|
Linus Torvalds
|
7d58e1c905 |
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull smp/hotplug updates from Thomas Gleixner: "No functional changes, just removal of obsolete and outdated defines, macros and documentation" * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Get rid of CPU hotplug notifier leftovers cpu/hotplug: Remove obsolete notifier macros |
||
|
Thomas Gleixner
|
f4c09f87ad |
cpu/hotplug: Get rid of CPU hotplug notifier leftovers
The CPU hotplug notifiers are history. Remove the last reminders. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Greg Kroah-Hartman
|
b24413180f |
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Yanjiang Jin
|
c6cd924efe |
cpu/hotplug: Remove obsolete notifier macros
commit
|
||
|
Thomas Gleixner
|
fc8dffd379 |
cpu/hotplug: Convert hotplug locking to percpu rwsem
There are no more (known) nested calls to get_online_cpus() and all observed lock ordering problems have been addressed. Replace the magic nested 'rwsem' hackery with a percpu-rwsem. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20170524081549.447014063@linutronix.de |
||
|
Thomas Gleixner
|
ade3f680a7 |
cpu/hotplug: Provide lockdep_assert_cpus_held()
Provide a stub function which can be used in places where existing get_online_cpus() calls are moved to call sites. This stub is going to be filled by the final conversion of the hotplug locking mechanism to a percpu rwsem. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20170524081547.161282442@linutronix.de |
||
|
Thomas Gleixner
|
8f553c498e |
cpu/hotplug: Provide cpus_read|write_[un]lock()
The counting 'rwsem' hackery of get|put_online_cpus() is going to be replaced by percpu rwsem. Rename the functions to make it clear that it's locking and not some refcount style interface. These new functions will be used for the preparatory patches which make the code ready for the percpu rwsem conversion. Rename all instances in the cpu hotplug code while at it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20170524081547.080397752@linutronix.de |
||
|
Ingo Molnar
|
1777e46355 |
sched/headers: Prepare to move _init() prototypes from <linux/sched.h> to <linux/sched/init.h>
But first introduce a trivial header and update usage sites. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Thomas Gleixner
|
530e9b76ae |
cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions
hotcpu_notifier(), cpu_notifier(), __hotcpu_notifier(), __cpu_notifier(), register_hotcpu_notifier(), register_cpu_notifier(), __register_hotcpu_notifier(), __register_cpu_notifier(), unregister_hotcpu_notifier(), unregister_cpu_notifier(), __unregister_hotcpu_notifier(), __unregister_cpu_notifier() are unused now. Remove them and all related code. Remove also the now pointless cpu notifier error injection mechanism. The states can be executed step by step and error rollback is the same as cpu down, so any state transition can be tested w/o requiring the notifier error injection. Some CPU hotplug states are kept as they are (ab)used for hotplug state tracking. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20161221192112.005642358@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Linus Torvalds
|
7b9dc3f75f |
Merge tag 'pm-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"Again, cpufreq gets more changes than the other parts this time (one
new driver, one old driver less, a bunch of enhancements of the
existing code, new CPU IDs, fixes, cleanups)
There also are some changes in cpuidle (idle injection rework, a
couple of new CPU IDs, online/offline rework in intel_idle, fixes and
cleanups), in the generic power domains framework (mostly related to
supporting power domains containing CPUs), and in the Operating
Performance Points (OPP) library (mostly related to supporting devices
with multiple voltage regulators)
In addition to that, the system sleep state selection interface is
modified to make it easier for distributions with unchanged user space
to support suspend-to-idle as the default system suspend method, some
issues are fixed in the PM core, the latency tolerance PM QoS
framework is improved a bit, the Intel RAPL power capping driver is
cleaned up and there are some fixes and cleanups in the devfreq
subsystem
Specifics:
- New cpufreq driver for Broadcom STB SoCs and a Device Tree binding
for it (Markus Mayer)
- Support for ARM Integrator/AP and Integrator/CP in the generic DT
cpufreq driver and elimination of the old Integrator cpufreq driver
(Linus Walleij)
- Support for the zx296718, r8a7743 and r8a7745, Socionext UniPhier,
and PXA SoCs in the the generic DT cpufreq driver (Baoyou Xie,
Geert Uytterhoeven, Masahiro Yamada, Robert Jarzmik)
- cpufreq core fix to eliminate races that may lead to using inactive
policy objects and related cleanups (Rafael Wysocki)
- cpufreq schedutil governor update to make it use SCHED_FIFO kernel
threads (instead of regular workqueues) for doing delayed work (to
reduce the response latency in some cases) and related cleanups
(Viresh Kumar)
- New cpufreq sysfs attribute for resetting statistics (Markus Mayer)
- cpufreq governors fixes and cleanups (Chen Yu, Stratos Karafotis,
Viresh Kumar)
- Support for using generic cpufreq governors in the intel_pstate
driver (Rafael Wysocki)
- Support for per-logical-CPU P-state limits and the EPP/EPB (Energy
Performance Preference/Energy Performance Bias) knobs in the
intel_pstate driver (Srinivas Pandruvada)
- New CPU ID for Knights Mill in intel_pstate (Piotr Luc)
- intel_pstate driver modification to use the P-state selection
algorithm based on CPU load on platforms with the system profile in
the ACPI tables set to "mobile" (Srinivas Pandruvada)
- intel_pstate driver cleanups (Arnd Bergmann, Rafael Wysocki,
Srinivas Pandruvada)
- cpufreq powernv driver updates including fast switching support
(for the schedutil governor), fixes and cleanus (Akshay Adiga,
Andrew Donnellan, Denis Kirjanov)
- acpi-cpufreq driver rework to switch it over to the new CPU
offline/online state machine (Sebastian Andrzej Siewior)
- Assorted cleanups in cpufreq drivers (Wei Yongjun, Prashanth
Prakash)
- Idle injection rework (to make it use the regular idle path instead
of a home-grown custom one) and related powerclamp thermal driver
updates (Peter Zijlstra, Jacob Pan, Petr Mladek, Sebastian Andrzej
Siewior)
- New CPU IDs for Atom Z34xx and Knights Mill in intel_idle (Andy
Shevchenko, Piotr Luc)
- intel_idle driver cleanups and switch over to using the new CPU
offline/online state machine (Anna-Maria Gleixner, Sebastian
Andrzej Siewior)
- cpuidle DT driver update to support suspend-to-idle properly
(Sudeep Holla)
- cpuidle core cleanups and misc updates (Daniel Lezcano, Pan Bian,
Rafael Wysocki)
- Preliminary support for power domains including CPUs in the generic
power domains (genpd) framework and related DT bindings (Lina Iyer)
- Assorted fixes and cleanups in the generic power domains (genpd)
framework (Colin Ian King, Dan Carpenter, Geert Uytterhoeven)
- Preliminary support for devices with multiple voltage regulators
and related fixes and cleanups in the Operating Performance Points
(OPP) library (Viresh Kumar, Masahiro Yamada, Stephen Boyd)
- System sleep state selection interface rework to make it easier to
support suspend-to-idle as the default system suspend method
(Rafael Wysocki)
- PM core fixes and cleanups, mostly related to the interactions
between the system suspend and runtime PM frameworks (Ulf Hansson,
Sahitya Tummala, Tony Lindgren)
- Latency tolerance PM QoS framework imorovements (Andrew Lutomirski)
- New Knights Mill CPU ID for the Intel RAPL power capping driver
(Piotr Luc)
- Intel RAPL power capping driver fixes, cleanups and switch over to
using the new CPU offline/online state machine (Jacob Pan, Thomas
Gleixner, Sebastian Andrzej Siewior)
- Fixes and cleanups in the exynos-ppmu, exynos-nocp, rk3399_dmc,
rockchip-dfi devfreq drivers and the devfreq core (Axel Lin,
Chanwoo Choi, Javier Martinez Canillas, MyungJoo Ham, Viresh Kumar)
- Fix for false-positive KASAN warnings during resume from ACPI S3
(suspend-to-RAM) on x86 (Josh Poimboeuf)
- Memory map verification during resume from hibernation on x86 to
ensure a consistent address space layout (Chen Yu)
- Wakeup sources debugging enhancement (Xing Wei)
- rockchip-io AVS driver cleanup (Shawn Lin)"
* tag 'pm-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (127 commits)
devfreq: rk3399_dmc: Don't use OPP structures outside of RCU locks
devfreq: rk3399_dmc: Remove dangling rcu_read_unlock()
devfreq: exynos: Don't use OPP structures outside of RCU locks
Documentation: intel_pstate: Document HWP energy/performance hints
cpufreq: intel_pstate: Support for energy performance hints with HWP
cpufreq: intel_pstate: Add locking around HWP requests
PM / sleep: Print active wakeup sources when blocking on wakeup_count reads
PM / core: Fix bug in the error handling of async suspend
PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend
PM / Domains: Fix compatible for domain idle state
PM / OPP: Don't WARN on multiple calls to dev_pm_opp_set_regulators()
PM / OPP: Allow platform specific custom set_opp() callbacks
PM / OPP: Separate out _generic_set_opp()
PM / OPP: Add infrastructure to manage multiple regulators
PM / OPP: Pass struct dev_pm_opp_supply to _set_opp_voltage()
PM / OPP: Manage supply's voltage/current in a separate structure
PM / OPP: Don't use OPP structure outside of rcu protected section
PM / OPP: Reword binding supporting multiple regulators per device
PM / OPP: Fix incorrect cpu-supply property in binding
cpuidle: Add a kerneldoc comment to cpuidle_use_deepest_state()
..
|
||
|
Michal Hocko
|
777c6e0dae |
hotplug: Make register and unregister notifier API symmetric
Yu Zhao has noticed that __unregister_cpu_notifier only unregisters its
notifiers when HOTPLUG_CPU=y while the registration might succeed even
when HOTPLUG_CPU=n if MODULE is enabled. This means that e.g. zswap
might keep a stale notifier on the list on the manual clean up during
the pool tear down and thus corrupt the list. Resulting in the following
[ 144.964346] BUG: unable to handle kernel paging request at ffff880658a2be78
[ 144.971337] IP: [<ffffffffa290b00b>] raw_notifier_chain_register+0x1b/0x40
<snipped>
[ 145.122628] Call Trace:
[ 145.125086] [<ffffffffa28e5cf8>] __register_cpu_notifier+0x18/0x20
[ 145.131350] [<ffffffffa2a5dd73>] zswap_pool_create+0x273/0x400
[ 145.137268] [<ffffffffa2a5e0fc>] __zswap_param_set+0x1fc/0x300
[ 145.143188] [<ffffffffa2944c1d>] ? trace_hardirqs_on+0xd/0x10
[ 145.149018] [<ffffffffa2908798>] ? kernel_param_lock+0x28/0x30
[ 145.154940] [<ffffffffa2a3e8cf>] ? __might_fault+0x4f/0xa0
[ 145.160511] [<ffffffffa2a5e237>] zswap_compressor_param_set+0x17/0x20
[ 145.167035] [<ffffffffa2908d3c>] param_attr_store+0x5c/0xb0
[ 145.172694] [<ffffffffa290848d>] module_attr_store+0x1d/0x30
[ 145.178443] [<ffffffffa2b2b41f>] sysfs_kf_write+0x4f/0x70
[ 145.183925] [<ffffffffa2b2a5b9>] kernfs_fop_write+0x149/0x180
[ 145.189761] [<ffffffffa2a99248>] __vfs_write+0x18/0x40
[ 145.194982] [<ffffffffa2a9a412>] vfs_write+0xb2/0x1a0
[ 145.200122] [<ffffffffa2a9a732>] SyS_write+0x52/0xa0
[ 145.205177] [<ffffffffa2ff4d97>] entry_SYSCALL_64_fastpath+0x12/0x17
This can be even triggered manually by changing
/sys/module/zswap/parameters/compressor multiple times.
Fix this issue by making unregister APIs symmetric to the register so
there are no surprises.
Fixes:
|
||
|
Peter Zijlstra
|
c1de45ca83 |
sched/idle: Add support for tasks that inject idle
Idle injection drivers such as Intel powerclamp and ACPI PAD drivers use
realtime tasks to take control of CPU then inject idle. There are two
issues with this approach:
1. Low efficiency: injected idle task is treated as busy so sched ticks
do not stop during injected idle period, the result of these
unwanted wakeups can be ~20% loss in power savings.
2. Idle accounting: injected idle time is presented to user as busy.
This patch addresses the issues by introducing a new PF_IDLE flag which
allows any given task to be treated as idle task while the flag is set.
Therefore, idle injection tasks can run through the normal flow of NOHZ
idle enter/exit to get the correct accounting as well as tick stop when
possible.
The implication is that idle task is then no longer limited to PID == 0.
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
Chris Metcalf
|
6727ad9e20 |
nmi_backtrace: generate one-line reports for idle cpus
When doing an nmi backtrace of many cores, most of which are idle, the output is a little overwhelming and very uninformative. Suppress messages for cpus that are idling when they are interrupted and just emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN". We do this by grouping all the cpuidle code together into a new .cpuidle.text section, and then checking the address of the interrupted PC to see if it lies within that section. This commit suitably tags x86 and tile idle routines, and only adds in the minimal framework for other architectures. Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm] Tested-by: Petr Mladek <pmladek@suse.com> Cc: Aaron Tomlin <atomlin@redhat.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
597f03f9d1 |
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU hotplug updates from Thomas Gleixner:
"Yet another batch of cpu hotplug core updates and conversions:
- Provide core infrastructure for multi instance drivers so the
drivers do not have to keep custom lists.
- Convert custom lists to the new infrastructure. The block-mq custom
list conversion comes through the block tree and makes the diffstat
tip over to more lines removed than added.
- Handle unbalanced hotplug enable/disable calls more gracefully.
- Remove the obsolete CPU_STARTING/DYING notifier support.
- Convert another batch of notifier users.
The relayfs changes which conflicted with the conversion have been
shipped to me by Andrew.
The remaining lot is targeted for 4.10 so that we finally can remove
the rest of the notifiers"
* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
cpufreq: Fix up conversion to hotplug state machine
blk/mq: Reserve hotplug states for block multiqueue
x86/apic/uv: Convert to hotplug state machine
s390/mm/pfault: Convert to hotplug state machine
mips/loongson/smp: Convert to hotplug state machine
mips/octeon/smp: Convert to hotplug state machine
fault-injection/cpu: Convert to hotplug state machine
padata: Convert to hotplug state machine
cpufreq: Convert to hotplug state machine
ACPI/processor: Convert to hotplug state machine
virtio scsi: Convert to hotplug state machine
oprofile/timer: Convert to hotplug state machine
block/softirq: Convert to hotplug state machine
lib/irq_poll: Convert to hotplug state machine
x86/microcode: Convert to hotplug state machine
sh/SH-X3 SMP: Convert to hotplug state machine
ia64/mca: Convert to hotplug state machine
ARM/OMAP/wakeupgen: Convert to hotplug state machine
ARM/shmobile: Convert to hotplug state machine
arm64/FP/SIMD: Convert to hotplug state machine
...
|
||
|
Thomas Gleixner
|
ee1e714b94 |
cpu/hotplug: Remove CPU_STARTING and CPU_DYING notifier
All users are converted to state machine, remove CPU_STARTING and the corresponding CPU_DYING. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160818125731.27256-2-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
James Morse
|
d391e55229 |
cpu/hotplug: Allow suspend/resume CPU to be specified
disable_nonboot_cpus() assumes that the lowest numbered online CPU is the boot CPU, and that this is the correct CPU to run any power management code on. On x86 this is always correct, as CPU0 cannot (easily) by taken offline. On arm64 CPU0 can be taken offline. For hibernate/resume this means we may hibernate on a CPU other than CPU0. If the system is rebooted with kexec 'CPU0' will be assigned to a different physical CPU. This complicates hibernate/resume as now we can't trust the CPU numbers. Arch code can find the correct physical CPU, and ensure it is online before resume from hibernate begins, but also needs to influence disable_nonboot_cpus()s choice of CPU. Rename disable_nonboot_cpus() as freeze_secondary_cpus() and add an argument indicating which CPU should be left standing. Follow the logic in migrate_to_reboot_cpu() to use the lowest numbered online CPU if the requested CPU is not online. Add disable_nonboot_cpus() as an inline function that has the existing behaviour. Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> |
||
|
Thomas Gleixner
|
7ee681b252 |
workqueue: Convert to state machine callbacks
Get rid of the prio ordering of the separate notifiers and use a proper state callback pair. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160713153335.197083890@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Thomas Gleixner
|
89ab9cb169 |
perf/core: Remove perf CPU notifier code
All users converted to state machine callbacks. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160713153335.115333381@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Thomas Gleixner
|
f2785ddb53 |
sched/hotplug: Move migration CPU_DYING to sched_cpu_dying()
Remove the hotplug notifier and make it an explicit state. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160310120025.502222097@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Thomas Gleixner
|
40190a78f8 |
sched/hotplug: Convert cpu_[in]active notifiers to state machine
Now that we reduced everything into single notifiers, it's simple to move them into the hotplug state machine space. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: rt@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Thomas Gleixner
|
135fb3e197 |
sched: Consolidate the notifier maze
We can maintain the ordering of the scheduler cpu hotplug functionality nicely in one notifer. Get rid of the maze. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: rt@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Thomas Gleixner
|
27d50c7eeb |
rcu: Make CPU_DYING_IDLE an explicit call
Make the RCU CPU_DYING_IDLE callback an explicit function call, so it gets invoked at the proper place. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: Rik van Riel <riel@redhat.com> Cc: Rafael Wysocki <rafael.j.wysocki@intel.com> Cc: "Srivatsa S. Bhat" <srivatsa@mit.edu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Turner <pjt@google.com> Link: http://lkml.kernel.org/r/20160226182341.870167933@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Thomas Gleixner
|
e69aab1311 |
cpu/hotplug: Make wait for dead cpu completion based
Kill the busy spinning on the control side and just wait for the hotplugged cpu to tell that it reached the dead state. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: Rik van Riel <riel@redhat.com> Cc: Rafael Wysocki <rafael.j.wysocki@intel.com> Cc: "Srivatsa S. Bhat" <srivatsa@mit.edu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Turner <pjt@google.com> Link: http://lkml.kernel.org/r/20160226182341.776157858@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Thomas Gleixner
|
931ef16330 |
cpu/hotplug: Unpark smpboot threads from the state machine
Handle the smpboot threads in the state machine. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: Rik van Riel <riel@redhat.com> Cc: Rafael Wysocki <rafael.j.wysocki@intel.com> Cc: "Srivatsa S. Bhat" <srivatsa@mit.edu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Turner <pjt@google.com> Link: http://lkml.kernel.org/r/20160226182341.295777684@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Thomas Gleixner
|
cff7d378d3 |
cpu/hotplug: Convert to a state machine for the control processor
Move the split out steps into a callback array and let the cpu_up/down code iterate through the array functions. For now most of the callbacks are asymmetric to resemble the current hotplug maze. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: Rik van Riel <riel@redhat.com> Cc: Rafael Wysocki <rafael.j.wysocki@intel.com> Cc: "Srivatsa S. Bhat" <srivatsa@mit.edu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Turner <pjt@google.com> Link: http://lkml.kernel.org/r/20160226182340.671816690@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
||
|
Thomas Gleixner
|
090e77c391 |
cpu/hotplug: Restructure FROZEN state handling
There are only a few callbacks which really care about FROZEN vs. !FROZEN. No need to have extra states for this. Publish the frozen state in an extra variable which is updated under the hotplug lock and let the users interested deal with it w/o imposing that extra state checks on everyone. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: Rik van Riel <riel@redhat.com> Cc: Rafael Wysocki <rafael.j.wysocki@intel.com> Cc: "Srivatsa S. Bhat" <srivatsa@mit.edu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Turner <pjt@google.com> Link: http://lkml.kernel.org/r/20160226182340.334912357@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |