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linux/arch/x86/kernel/cpu/mce
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Jane Chu f9781bb18e x86/mce: Retrieve poison range from hardware 
When memory poison consumption machine checks fire, MCE notifier
handlers like nfit_handle_mce() record the impacted physical address
range which is reported by the hardware in the MCi_MISC MSR. The error
information includes data about blast radius, i.e. how many cachelines
did the hardware determine are impacted. A recent change

  7917f9cdb5 ("acpi/nfit: rely on mce->misc to determine poison granularity")

updated nfit_handle_mce() to stop hard coding the blast radius value of
1 cacheline, and instead rely on the blast radius reported in 'struct
mce' which can be up to 4K (64 cachelines).

It turns out that apei_mce_report_mem_error() had a similar problem in
that it hard coded a blast radius of 4K rather than reading the blast
radius from the error information. Fix apei_mce_report_mem_error() to
convey the proper poison granularity.

Signed-off-by: Jane Chu <jane.chu@oracle.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/7ed50fd8-521e-cade-77b1-738b8bfb8502@oracle.com
Link: https://lore.kernel.org/r/20220826233851.1319100-1-jane.chu@oracle.com
2022-08-29 09:33:42 +02:00
..
amd.c x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails 2022-04-05 21:24:37 +02:00
apei.c x86/mce: Retrieve poison range from hardware 2022-08-29 09:33:42 +02:00
core.c libnvdimm for 5.19 2022-05-27 15:49:30 -07:00
dev-mcelog.c x86/mce/dev-mcelog: Do not update kflags on AMD systems 2020-09-15 10:04:51 +02:00
genpool.c
inject.c x86/mce: Check whether writes to MCA_STATUS are getting ignored 2022-06-28 12:08:10 +02:00
intel.c x86/cpu: Merge Intel and AMD ppin_init() functions 2022-02-01 12:56:23 +01:00
internal.h x86/mce: Check whether writes to MCA_STATUS are getting ignored 2022-06-28 12:08:10 +02:00
Makefile thermal: Move therm_throt there from x86/mce 2021-02-08 11:43:20 +01:00
p5.c x86/mce: Get rid of machine_check_vector 2021-09-23 11:15:49 +02:00
severity.c x86/mce: Add messages for panic errors in AMD's MCE grading 2022-04-25 12:40:48 +02:00
threshold.c x86/entry: Convert various system vectors 2020-06-11 15:15:14 +02:00
winchip.c x86/mce: Get rid of machine_check_vector 2021-09-23 11:15:49 +02:00