Messages in this thread Patch in this message | | | From | Yinghai Lu <> | Subject | [PATCH 2/3] x86: don't need to go to chunksize to 4G | Date | Sat, 27 Sep 2008 00:30:07 -0700 |
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change back chunksize max to 2g otherwise will get strange layout in 2G ram system like 0 - 4g WB, 2040M - 2048M UC, 2048M - 4G NC instead of 0 - 2g WB, 2040M - 2048M UC
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
--- arch/x86/kernel/cpu/mtrr/main.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
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 @@ -1162,10 +1162,10 @@ struct mtrr_cleanup_result { /* * gran_size: 1M, 2M, ..., 2G - * chunk size: gran_size, ..., 4G - * so we need (2+13)*6 + * chunk size: gran_size, ..., 2G + * so we need (1+12)*6 */ -#define NUM_RESULT 90 +#define NUM_RESULT 78 #define PSHIFT (PAGE_SHIFT - 10) static struct mtrr_cleanup_result __initdata result[NUM_RESULT]; @@ -1282,7 +1282,7 @@ static int __init mtrr_cleanup(unsigned memset(min_loss_pfn, 0xff, sizeof(min_loss_pfn)); memset(result, 0, sizeof(result)); for (gran_size = (1ULL<<20); gran_size < (1ULL<<32); gran_size <<= 1) { - for (chunk_size = gran_size; chunk_size < (1ULL<<33); + for (chunk_size = gran_size; chunk_size < (1ULL<<32); chunk_size <<= 1) { int num_reg;
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