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| author | Anton Altaparmakov <aia21@cantab.net> | 2005-09-19 09:47:49 +0100 |
|---|---|---|
| committer | Anton Altaparmakov <aia21@cantab.net> | 2005-09-19 09:47:49 +0100 |
| commit | 044a500e46742d39d22f1781cfb64ba93b463e39 (patch) | |
| tree | b0313211ea7ba26b90c1083ade0e4c9f486b87db /arch/x86_64/kernel/setup.c | |
| parent | f6098cf449b81c14a51e48dd22ae47d03126a1de (diff) | |
| parent | 6c0741fbdee5bd0f8ed13ac287c4ab18e8ba7d83 (diff) | |
Merge branch 'master' of /home/src/linux-2.6/
Diffstat (limited to 'arch/x86_64/kernel/setup.c')
| -rw-r--r-- | arch/x86_64/kernel/setup.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c index 351d8d64c2f..238f73e1a83 100644 --- a/arch/x86_64/kernel/setup.c +++ b/arch/x86_64/kernel/setup.c @@ -831,11 +831,26 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c) #endif } +#define HWCR 0xc0010015 + static int __init init_amd(struct cpuinfo_x86 *c) { int r; int level; +#ifdef CONFIG_SMP + unsigned long value; + + // Disable TLB flush filter by setting HWCR.FFDIS: + // bit 6 of msr C001_0015 + // + // Errata 63 for SH-B3 steppings + // Errata 122 for all(?) steppings + rdmsrl(HWCR, value); + value |= 1 << 6; + wrmsrl(HWCR, value); +#endif + /* Bit 31 in normal CPUID used for nonstandard 3DNow ID; 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */ clear_bit(0*32+31, &c->x86_capability); |