diff --git a/[refs] b/[refs] index 60c0eb497e3a..d1d1e338419e 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 61ffcafafb3d985e1ab8463be0187b421614775c +refs/heads/master: bc5e8fdfc622b03acf5ac974a1b8b26da6511c99 diff --git a/trunk/arch/x86_64/kernel/setup.c b/trunk/arch/x86_64/kernel/setup.c index 351d8d64c2fb..238f73e1a834 100644 --- a/trunk/arch/x86_64/kernel/setup.c +++ b/trunk/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);