Messages in this thread Patch in this message | | | From | Yinghai Lu <> | Subject | [PATCH 3/3] x86: mtrr_cleanup: treat WRPROT as UNCACHEABLE | Date | Sat, 4 Oct 2008 14:50:33 -0700 |
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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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