Bug #2686 » 0001-Program-PAT-indices-5-as-WP-from-default-WT-and-6-as.patch
| sys/platform/pc64/x86_64/pmap.c | ||
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/*
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* If we support the PAT then set-up entries for
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* WRITE_PROTECTED and WRITE_COMBINING using bit patterns
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* 4 and 5.
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* 5 and 6.
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*/
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pat_msr = (pat_msr & ~PAT_MASK(4)) |
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PAT_VALUE(4, PAT_WRITE_PROTECTED);
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pat_msr = (pat_msr & ~PAT_MASK(5)) |
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PAT_VALUE(5, PAT_WRITE_COMBINING);
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pat_pte_index[PAT_WRITE_PROTECTED] = X86_PG_PTE_PAT | 0;
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pat_pte_index[PAT_WRITE_COMBINING] = X86_PG_PTE_PAT | X86_PG_NC_PWT;
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PAT_VALUE(5, PAT_WRITE_PROTECTED);
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pat_msr = (pat_msr & ~PAT_MASK(6)) |
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PAT_VALUE(6, PAT_WRITE_COMBINING);
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pat_pte_index[PAT_WRITE_PROTECTED] = X86_PG_PTE_PAT | X86_PG_NC_PWT;
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pat_pte_index[PAT_WRITE_COMBINING] = X86_PG_PTE_PAT | X86_PG_NC_PCD;
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/*
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* Then enable the PAT
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