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x86: don't need to go to chunksize to 4G

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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>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu 2008-09-27 00:30:07 -07:00 committed by Ingo Molnar
parent 6ef190cc92
commit 7fc2368d1d
1 changed files with 4 additions and 4 deletions
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8
arch/x86/kernel/cpu/mtrr/main.c
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@ -1155,10 +1155,10 @@ 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];
@ -1276,7 +1276,7 @@ static int __init mtrr_cleanup(unsigned address_bits)
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;