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authorYazen Ghannam <Yazen.Ghannam@amd.com>2016-05-11 14:58:29 +0200
committerIngo Molnar <mingo@kernel.org>2016-05-12 09:08:23 +0200
commit754a92305980b1fecffe033dd3fdc49c37f8e4b0 (patch)
treefb1e36d9bfc317eae4380088568d6fa146cac45a /arch/x86/ras
parenta348ed83d9efe8c11ecc85c15d7329825b97431e (diff)
downloadlinux-754a92305980b1fecffe033dd3fdc49c37f8e4b0.tar.bz2
x86/RAS: Add SMCA support to AMD Error Injector
Use SMCA MSRs when writing to MCA_{STATUS,ADDR,MISC} and MCA_DE{STAT,ADDR} when injecting Deferred Errors on SMCA platforms. Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/1462971509-3856-8-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/ras')
-rw-r--r--arch/x86/ras/mce_amd_inj.c31
1 files changed, 25 insertions, 6 deletions
diff --git a/arch/x86/ras/mce_amd_inj.c b/arch/x86/ras/mce_amd_inj.c
index 9e02dcaef683..e69f4701a076 100644
--- a/arch/x86/ras/mce_amd_inj.c
+++ b/arch/x86/ras/mce_amd_inj.c
@@ -290,14 +290,33 @@ static void do_inject(void)
wrmsr_on_cpu(cpu, MSR_IA32_MCG_STATUS,
(u32)mcg_status, (u32)(mcg_status >> 32));
- wrmsr_on_cpu(cpu, MSR_IA32_MCx_STATUS(b),
- (u32)i_mce.status, (u32)(i_mce.status >> 32));
+ if (boot_cpu_has(X86_FEATURE_SMCA)) {
+ if (inj_type == DFR_INT_INJ) {
+ wrmsr_on_cpu(cpu, MSR_AMD64_SMCA_MCx_DESTAT(b),
+ (u32)i_mce.status, (u32)(i_mce.status >> 32));
+
+ wrmsr_on_cpu(cpu, MSR_AMD64_SMCA_MCx_DEADDR(b),
+ (u32)i_mce.addr, (u32)(i_mce.addr >> 32));
+ } else {
+ wrmsr_on_cpu(cpu, MSR_AMD64_SMCA_MCx_STATUS(b),
+ (u32)i_mce.status, (u32)(i_mce.status >> 32));
+
+ wrmsr_on_cpu(cpu, MSR_AMD64_SMCA_MCx_ADDR(b),
+ (u32)i_mce.addr, (u32)(i_mce.addr >> 32));
+ }
+
+ wrmsr_on_cpu(cpu, MSR_AMD64_SMCA_MCx_MISC(b),
+ (u32)i_mce.misc, (u32)(i_mce.misc >> 32));
+ } else {
+ wrmsr_on_cpu(cpu, MSR_IA32_MCx_STATUS(b),
+ (u32)i_mce.status, (u32)(i_mce.status >> 32));
- wrmsr_on_cpu(cpu, MSR_IA32_MCx_ADDR(b),
- (u32)i_mce.addr, (u32)(i_mce.addr >> 32));
+ wrmsr_on_cpu(cpu, MSR_IA32_MCx_ADDR(b),
+ (u32)i_mce.addr, (u32)(i_mce.addr >> 32));
- wrmsr_on_cpu(cpu, MSR_IA32_MCx_MISC(b),
- (u32)i_mce.misc, (u32)(i_mce.misc >> 32));
+ wrmsr_on_cpu(cpu, MSR_IA32_MCx_MISC(b),
+ (u32)i_mce.misc, (u32)(i_mce.misc >> 32));
+ }
toggle_hw_mce_inject(cpu, false);