aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorAravind Gopalakrishnan <[email protected]>2016-04-30 14:33:53 +0200
committerIngo Molnar <[email protected]>2016-05-03 08:24:16 +0200
commitbb91f8c0176b072aeb6b84cfd7e04084025121e0 (patch)
treea8eac3f5676531fc7629f04db74ed56b11f2156c
parent6bda529ec42e1cd4dde1c3d0a1a18000ffd3d419 (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.c9
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();
}