On Fri, 2014-09-12 at 15:33 -0400, Konrad Rzeszutek Wilk wrote:
> > - /* Set PWT to Write-Combining. All other bits stay the same */
> > - /*
> > -* PTE encoding used in Linux:
> > -* PAT
> > -* |PCD
> > -* ||PWT
> > -* |||
> > -* 000 WB
> - /* Set PWT to Write-Combining. All other bits stay the same */
> - /*
> - * PTE encoding used in Linux:
> - * PAT
> - * |PCD
> - * ||PWT
> - * |||
> - * 000 WB _PAGE_CACHE_WB
> - * 001 WC _PAGE_CACHE_WC
- /* Set PWT to Write-Combining. All other bits stay the same */
- /*
- * PTE encoding used in Linux:
- * PAT
- * |PCD
- * ||PWT
- * |||
- * 000 WB _PAGE_CACHE_WB
- * 001 WC _PAGE_CACHE_WC
- *
On Fri, 2014-09-12 at 15:33 -0400, Konrad Rzeszutek Wilk wrote:
- /* Set PWT to Write-Combining. All other bits stay the same */
- /*
-* PTE encoding used in Linux:
-* PAT
-* |PCD
-* ||PWT
-* |||
-* 000 WB _PAGE_CACHE_WB
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 further
minimize the risk of using the PAT bit as the PA3 slot is UC and is
not currently used.
The following Intel processors are affected by the PAT errata.
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 further
minimize the risk of using the PAT bit as the PA3 slot is UC and is
not currently used.
The following Intel processors are affected by the PAT errata.
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