diff options
Diffstat (limited to 'arch/x86/kernel/cpu/amd_64.c')
| -rw-r--r-- | arch/x86/kernel/cpu/amd_64.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/amd_64.c b/arch/x86/kernel/cpu/amd_64.c index 958526d6a74a..bd182b7616ee 100644 --- a/arch/x86/kernel/cpu/amd_64.c +++ b/arch/x86/kernel/cpu/amd_64.c @@ -199,10 +199,14 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) * Don't do it for gbpages because there seems very little * benefit in doing so. */ - if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg) && - (tseg >> PMD_SHIFT) < - (max_pfn_mapped >> (PMD_SHIFT-PAGE_SHIFT))) + if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg)) { + if ((tseg>>PMD_SHIFT) < + (max_low_pfn_mapped>>(PMD_SHIFT-PAGE_SHIFT)) || + ((tseg>>PMD_SHIFT) < + (max_pfn_mapped>>(PMD_SHIFT-PAGE_SHIFT)) && + (tseg>>PMD_SHIFT) >= (1ULL<<(32 - PMD_SHIFT)))) set_memory_4k((unsigned long)__va(tseg), 1); + } } } |