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Subject[PATCH v2 5/6] x86/mce: Do not take action on SRAO/Deferred errors on AMD for now
Date
Per Yazen Ghannam we should not use the UC notifier for the time
being on AMD.

Reported-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
---
New in v2. This is due to a remark from Yazen on v1, that we shouldn't
be handling neither SRAO nor Deferred errors in that handler.

An alternative implementation would do the architecture "if" directly
within uc_decode_notifier(), in which case we could decide to not apply
patch 4.
---
arch/x86/kernel/cpu/mce/core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index d48deb127071..d8fe5b048ee7 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -1970,7 +1970,8 @@ int __init mcheck_init(void)
{
mcheck_intel_therm_init();
mce_register_decode_chain_internal(&first_nb);
- mce_register_decode_chain_internal(&mce_uc_nb);
+ if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
+ mce_register_decode_chain_internal(&mce_uc_nb);
mce_register_decode_chain_internal(&mce_default_nb);
mcheck_vendor_init_severity();

--
2.22.0.3.gb49bb57c8208.dirty
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