[PATCH v11 3/12] x86, mm, pat: Set WT to PA7 slot of PAT MSR

2015-05-29 Thread Toshi Kani
From: Toshi Kani This patch sets WT to the PA7 slot in the PAT MSR when the processor is not affected by the PAT errata. The PA7 slot is chosen to improve robustness in the presence of errata that might cause the high PAT bit to be ignored. This way a buggy PA7 slot access will hit the PA3

[PATCH v11 3/12] x86, mm, pat: Set WT to PA7 slot of PAT MSR

2015-05-29 Thread Toshi Kani
From: Toshi Kani toshi.k...@hp.com This patch sets WT to the PA7 slot in the PAT MSR when the processor is not affected by the PAT errata. The PA7 slot is chosen to improve robustness in the presence of errata that might cause the high PAT bit to be ignored. This way a buggy PA7 slot access