Evolution-X-Devices/kernel_xiaomi_garnet
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86/mce: Don't remove sysfs if thresholding sysfs init fails

Browse Source 
commit 4c113a5b28bfd589e2010b5fc8867578b0135ed7 upstream.

Currently, the MCE subsystem sysfs interface will be removed if the
thresholding sysfs interface fails to be created. A common failure is due to
new MCA bank types that are not recognized and don't have a short name set.

The MCA thresholding feature is optional and should not break the common MCE
sysfs interface. Also, new MCA bank types are occasionally introduced, and
updates will be needed to recognize them. But likewise, this should not break
the common sysfs interface.

Keep the MCE sysfs interface regardless of the status of the thresholding
sysfs interface.

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/20250624-wip-mca-updates-v4-1-236dd74f645f@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yazen Ghannam
2025-06-24 14:15:56 +00:00
committed by Greg Kroah-Hartman
parent 0c6bb356c0
commit 8f7851a98c
1 changed files with 1 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/kernel/cpu/mce/core.c
View File

@@ -2627,15 +2627,9 @@ static int mce_cpu_dead(unsigned int cpu)
static int mce_cpu_online(unsigned int cpu)
{
struct timer_list *t = this_cpu_ptr(&mce_timer);
int ret;
mce_device_create(cpu);
ret = mce_threshold_create_device(cpu);
if (ret) {
mce_device_remove(cpu);
return ret;
}
mce_threshold_create_device(cpu);
mce_reenable_cpu();
mce_start_timer(t);
return 0;