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(parent: 5bd085b) | patch
x86: When cleaning MTRRs, do not fold WP into UC
authorYinghai Lu <yinghai@kernel.org>
Tue, 17 Nov 2009 07:04:56 +0000 (23:04 -0800)
committerH. Peter Anvin <hpa@zytor.com>
Tue, 17 Nov 2009 18:26:53 +0000 (10:26 -0800)
commit508d85c2c6bc8cba53d2a54d9a306ad64a0a80bf
treec16016bae57e594ee8dbbc48f46a9eaf599d9a56tree | snapshot (tar.gz zip)
parent5bd085b5fbd8b0b8685a2173cb9263798fc2a44ecommit | diff
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@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
arch/x86/kernel/cpu/mtrr/cleanup.c diff | blob | blame | history