From: Yinghai Lu <yhlu.kernel@gmail.com>
To: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, Yinghai Lu <yhlu.kernel@gmail.com>
Subject: [PATCH 3/3] x86: mtrr_cleanup: treat WRPROT as UNCACHEABLE
Date: Sat, 4 Oct 2008 14:50:33 -0700 [thread overview]
Message-ID: <1223157033-30217-3-git-send-email-yhlu.kernel@gmail.com> (raw)
In-Reply-To: <1223157033-30217-1-git-send-email-yhlu.kernel@gmail.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
---
arch/x86/kernel/cpu/mtrr/main.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
Index: linux-2.6/arch/x86/kernel/cpu/mtrr/main.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/main.c
+++ linux-2.6/arch/x86/kernel/cpu/mtrr/main.c
@@ -759,7 +759,8 @@ x86_get_mtrr_mem_range(struct res_range
/* take out UC ranges */
for (i = 0; i < num_var_ranges; i++) {
type = range_state[i].type;
- if (type != MTRR_TYPE_UNCACHABLE)
+ if (type != MTRR_TYPE_UNCACHABLE &&
+ type != MTRR_TYPE_WRPROT)
continue;
size = range_state[i].size_pfn;
if (!size)
@@ -1248,6 +1249,8 @@ static int __init mtrr_cleanup(unsigned
continue;
if (!size)
type = MTRR_NUM_TYPES;
+ if (type == MTRR_TYPE_WRPROT)
+ type = MTRR_TYPE_UNCACHABLE;
num[type]++;
}
next prev parent reply other threads:[~2008-10-04 21:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-04 21:50 [PATCH 1/3] x86: mtrr_cleanup: print out correct type Yinghai Lu
2008-10-04 21:50 ` [PATCH 2/3] x86: mtrr_cleanup: first 1M should be coverred in var mtrrs Yinghai Lu
2008-10-05 0:46 ` H. Peter Anvin
2008-10-05 1:49 ` Yinghai Lu
2008-10-05 1:52 ` H. Peter Anvin
2008-10-05 1:59 ` Yinghai Lu
2008-10-05 2:04 ` H. Peter Anvin
2008-10-04 21:50 ` Yinghai Lu [this message]
2008-10-05 0:42 ` [PATCH 1/3] x86: mtrr_cleanup: print out correct type H. Peter Anvin
2008-10-05 1:42 ` Yinghai Lu
2008-10-05 3:10 ` H. Peter Anvin
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