x86, mce: port K7 bank 0 quirk to 64bit mce code

Various K7 have broken bank 0s. Don't enable it by default

Port from the 32bit code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 1dcd3be0332..1336280edcc 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -650,6 +650,12 @@ static void mce_cpu_quirks(struct cpuinfo_x86 *c)
                          */
                         mce_bootlog = 0;
                 }
+                /*
+                 * Various K7s with broken bank 0 around. Always disable
+                 * by default.
+                 */
+                 if (c->x86 == 6)
+                        bank[0] = 0;
         }
 
         if (c->x86_vendor == X86_VENDOR_INTEL) {