[PATCH 3/3] x86: mtrr_cleanup: treat WRPROT as UNCACHEABLE

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From: Yinghai Lu
Date: Saturday, October 4, 2008 - 2:50 pm

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]++;
 	}
 
--
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Messages in current thread:
[PATCH 3/3] x86: mtrr_cleanup: treat WRPROT as UNCACHEABLE, Yinghai Lu, (Sat Oct 4, 2:50 pm)
Re: [PATCH 1/3] x86: mtrr_cleanup: print out correct type, H. Peter Anvin, (Sat Oct 4, 5:42 pm)
Re: [PATCH 1/3] x86: mtrr_cleanup: print out correct type, H. Peter Anvin, (Sat Oct 4, 8:10 pm)