fa6ad0bcb8
Add a kselftest which exercises the S2MPU's MPT logic. The functions are included into a kernel module and exercised in EL1. This is because testing the EL2 driver itself would require generating DMA traffic and probing the S2MPU without crashing the system. Instead, the logic is used on a local FMPT/SMPT and the results are inspected. Test: run kvm/aarch64/s2mpu kselftest Bug: 190463801 Signed-off-by: David Brazdil <dbrazdil@google.com> Change-Id: Ib1e572e3247d864e59fad8a4960e38956237ef8c
73 lines
1.8 KiB
Plaintext
73 lines
1.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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#
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# KVM configuration
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#
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source "virt/lib/Kconfig"
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source "virt/kvm/Kconfig"
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menuconfig VIRTUALIZATION
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bool "Virtualization"
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help
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Say Y here to get to see options for using your Linux host to run
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other operating systems inside virtual machines (guests).
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This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and
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disabled.
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if VIRTUALIZATION
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menuconfig KVM
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bool "Kernel-based Virtual Machine (KVM) support"
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depends on HAVE_KVM
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select MMU_NOTIFIER
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select PREEMPT_NOTIFIERS
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select HAVE_KVM_CPU_RELAX_INTERCEPT
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select HAVE_KVM_ARCH_TLB_FLUSH_ALL
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select KVM_MMIO
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select KVM_GENERIC_DIRTYLOG_READ_PROTECT
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select KVM_XFER_TO_GUEST_WORK
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select SRCU
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select KVM_VFIO
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select HAVE_KVM_EVENTFD
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select HAVE_KVM_IRQFD
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select HAVE_KVM_MSI
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQ_ROUTING
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select IRQ_BYPASS_MANAGER
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select HAVE_KVM_IRQ_BYPASS
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select HAVE_KVM_VCPU_RUN_PID_CHANGE
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select SCHED_INFO
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help
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Support hosting virtualized guest machines.
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If unsure, say N.
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config NVHE_EL2_DEBUG
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bool "Debug mode for non-VHE EL2 object"
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depends on KVM
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help
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Say Y here to enable the debug mode for the non-VHE KVM EL2 object.
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Failure reports will BUG() in the hypervisor. This is intended for
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local EL2 hypervisor development.
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If unsure, say N.
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config KVM_S2MPU
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bool "Stage-2 Memory Protection Unit support"
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depends on KVM
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help
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Support for the Stage-2 Memory Protection Unit (S2MPU) and Stream
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Security Mapping Table (SSMT) devices in KVM. This allows the
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hypervisor to restrict DMA access to its memory and the memory of
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protected guests.
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config TEST_KVM_S2MPU
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tristate "Test kernel module for S2MPU"
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depends on KVM_S2MPU
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help
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Kernel module for kselftests that exercises the KVM S2MPU driver.
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endif # VIRTUALIZATION
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