[tip:ras/core] x86/mce: Add the missing memory error check on AMD

[tip-bot for Borislav Petkov]

Commit-ID:  db548a28fcee0f38cf4c7c726becf24c8afacf02
Gitweb: http://git.kernel.org/tip/db548a28fcee0f38cf4c7c726becf24c8afacf02
Author: Borislav Petkov 
AuthorDate: Tue, 24 Nov 2015 08:41:19 +0100
Committer:  Ingo Molnar 
CommitDate: Tue, 24 Nov 2015 09:12:35 +0100

x86/mce: Add the missing memory error check on AMD

We simply need to look at the extended error code when detecting
whether the error is of type memory.

Signed-off-by: Borislav Petkov 
Acked-by: Tony Luck 
Cc: Andy Lutomirski 
Cc: Borislav Petkov 
Cc: Brian Gerst 
Cc: Denys Vlasenko 
Cc: H. Peter Anvin 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Link: http://lkml.kernel.org/r/1448350880-5573-4-git-send-email...@alien8.de
Signed-off-by: Ingo Molnar 
---
 arch/x86/kernel/cpu/mcheck/mce.c | 8 
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index fb8b1db..e00e85a 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -522,10 +522,10 @@ static bool memory_error(struct mce *m)
struct cpuinfo_x86 *c = _cpu_data;
 
if (c->x86_vendor == X86_VENDOR_AMD) {
-   /*
-* coming soon
-*/
-   return false;
+   /* ErrCodeExt[20:16] */
+   u8 xec = (m->status >> 16) & 0x1f;
+
+   return (xec == 0x0 || xec == 0x8);
} else if (c->x86_vendor == X86_VENDOR_INTEL) {
/*
 * Intel SDM Volume 3B - 15.9.2 Compound Error Codes
--
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[tip:ras/core] x86/mce: Add the missing memory error check on AMD

[tip-bot for Borislav Petkov]

Commit-ID:  db548a28fcee0f38cf4c7c726becf24c8afacf02
Gitweb: http://git.kernel.org/tip/db548a28fcee0f38cf4c7c726becf24c8afacf02
Author: Borislav Petkov 
AuthorDate: Tue, 24 Nov 2015 08:41:19 +0100
Committer:  Ingo Molnar 
CommitDate: Tue, 24 Nov 2015 09:12:35 +0100

x86/mce: Add the missing memory error check on AMD

We simply need to look at the extended error code when detecting
whether the error is of type memory.

Signed-off-by: Borislav Petkov 
Acked-by: Tony Luck 
Cc: Andy Lutomirski 
Cc: Borislav Petkov 
Cc: Brian Gerst 
Cc: Denys Vlasenko 
Cc: H. Peter Anvin 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Link: http://lkml.kernel.org/r/1448350880-5573-4-git-send-email...@alien8.de
Signed-off-by: Ingo Molnar 
---
 arch/x86/kernel/cpu/mcheck/mce.c | 8 
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index fb8b1db..e00e85a 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -522,10 +522,10 @@ static bool memory_error(struct mce *m)
struct cpuinfo_x86 *c = _cpu_data;
 
if (c->x86_vendor == X86_VENDOR_AMD) {
-   /*
-* coming soon
-*/
-   return false;
+   /* ErrCodeExt[20:16] */
+   u8 xec = (m->status >> 16) & 0x1f;
+
+   return (xec == 0x0 || xec == 0x8);
} else if (c->x86_vendor == X86_VENDOR_INTEL) {
/*
 * Intel SDM Volume 3B - 15.9.2 Compound Error Codes
--
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