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| author | Andi Kleen <ak@suse.de> | 2007-05-02 19:27:12 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:12 +0200 |
| commit | de90c5ce832b1218042316260ff9268b00fdcba3 (patch) | |
| tree | 604d161cfb3eb01b8d3ea1c22087c1c476f24091 /arch | |
| parent | d479d2cc0802d5c8546a6a7492646e08228effd5 (diff) | |
| download | linux-de90c5ce832b1218042316260ff9268b00fdcba3.tar.gz linux-de90c5ce832b1218042316260ff9268b00fdcba3.tar.bz2 linux-de90c5ce832b1218042316260ff9268b00fdcba3.zip | |
[PATCH] i386: Enable bank 0 on non K7 Athlon
As a bug workaround bank 0 on K7s is normally disabled, but no need
to do that on other AMD CPUs.
Cc: davej@redhat.com
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/cpu/mcheck/k7.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/i386/kernel/cpu/mcheck/k7.c b/arch/i386/kernel/cpu/mcheck/k7.c index b0862af595aa..7a2472557bbb 100644 --- a/arch/i386/kernel/cpu/mcheck/k7.c +++ b/arch/i386/kernel/cpu/mcheck/k7.c @@ -82,9 +82,13 @@ void amd_mcheck_init(struct cpuinfo_x86 *c) nr_mce_banks = l & 0xff; /* Clear status for MC index 0 separately, we don't touch CTL, - * as some Athlons cause spurious MCEs when its enabled. */ - wrmsr (MSR_IA32_MC0_STATUS, 0x0, 0x0); - for (i=1; i<nr_mce_banks; i++) { + * as some K7 Athlons cause spurious MCEs when its enabled. */ + if (boot_cpu_data.x86 == 6) { + wrmsr (MSR_IA32_MC0_STATUS, 0x0, 0x0); + i = 1; + } else + i = 0; + for (; i<nr_mce_banks; i++) { wrmsr (MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff); wrmsr (MSR_IA32_MC0_STATUS+4*i, 0x0, 0x0); } |