Commit-ID: 508d85c2c6bc8cba53d2a54d9a306ad64a0a80bf Gitweb: http://git.kernel.org/tip/508d85c2c6bc8cba53d2a54d9a306ad64a0a80bf Author: Yinghai Lu <yinghai@xxxxxxxxxx> AuthorDate: Mon, 16 Nov 2009 23:04:56 -0800 Committer: H. Peter Anvin <hpa@xxxxxxxxx> CommitDate: Tue, 17 Nov 2009 10:26:53 -0800 x86: When cleaning MTRRs, do not fold WP into UC The current MTRR code treats WP as a form of UC. This really isn't desirable behaviour, except possibly in the case of severe MTRR shortage. Disable this, to allow legitimate uses of WP to remain unmolested. Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx> Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- arch/x86/kernel/cpu/mtrr/cleanup.c | 2 -- 1 files changed, 0 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c index 315738c..6e49f6f 100644 --- a/arch/x86/kernel/cpu/mtrr/cleanup.c +++ b/arch/x86/kernel/cpu/mtrr/cleanup.c @@ -689,8 +689,6 @@ static int __init mtrr_need_cleanup(void) continue; if (!size) type = MTRR_NUM_TYPES; - if (type == MTRR_TYPE_WRPROT) - type = MTRR_TYPE_UNCACHABLE; num[type]++; } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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