diff options
author | Aravind Gopalakrishnan <[email protected]> | 2016-04-30 14:33:53 +0200 |
---|---|---|
committer | Ingo Molnar <[email protected]> | 2016-05-03 08:24:16 +0200 |
commit | bb91f8c0176b072aeb6b84cfd7e04084025121e0 (patch) | |
tree | a8eac3f5676531fc7629f04db74ed56b11f2156c | |
parent | 6bda529ec42e1cd4dde1c3d0a1a18000ffd3d419 (diff) |
x86/mce: Carve out writes to MCx_STATUS and MCx_CTL
We need to do this after __mcheck_cpu_init_vendor() as for
ScalableMCA processors, there are going to be new MSR write handlers
if the feature is detected using CPUID bit (which happens in
__mcheck_cpu_init_vendor()).
No functional change is introduced here.
Signed-off-by: Aravind Gopalakrishnan <[email protected]>
Signed-off-by: Yazen Ghannam <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Aravind Gopalakrishnan <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brian Gerst <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: linux-edac <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
-rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 43f8b49ef570..6bffb26e05e0 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1420,7 +1420,6 @@ static void __mcheck_cpu_init_generic(void) enum mcp_flags m_fl = 0; mce_banks_t all_banks; u64 cap; - int i; if (!mca_cfg.bootlog) m_fl = MCP_DONTLOG; @@ -1436,6 +1435,11 @@ static void __mcheck_cpu_init_generic(void) rdmsrl(MSR_IA32_MCG_CAP, cap); if (cap & MCG_CTL_P) wrmsr(MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff); +} + +static void __mcheck_cpu_init_clear_banks(void) +{ + int i; for (i = 0; i < mca_cfg.banks; i++) { struct mce_bank *b = &mce_banks[i]; @@ -1717,6 +1721,7 @@ void mcheck_cpu_init(struct cpuinfo_x86 *c) __mcheck_cpu_init_generic(); __mcheck_cpu_init_vendor(c); + __mcheck_cpu_init_clear_banks(); __mcheck_cpu_init_timer(); } @@ -2121,6 +2126,7 @@ static void mce_syscore_resume(void) { __mcheck_cpu_init_generic(); __mcheck_cpu_init_vendor(raw_cpu_ptr(&cpu_info)); + __mcheck_cpu_init_clear_banks(); } static struct syscore_ops mce_syscore_ops = { @@ -2138,6 +2144,7 @@ static void mce_cpu_restart(void *data) if (!mce_available(raw_cpu_ptr(&cpu_info))) return; __mcheck_cpu_init_generic(); + __mcheck_cpu_init_clear_banks(); __mcheck_cpu_init_timer(); } |