From 519a40e1d7f70eadf1d8f4a3b8ec0ba59703e15d Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Sat, 4 Oct 2008 14:50:32 -0700 Subject: [PATCH] --- yaml --- r: 110422 b: refs/heads/master c: 99e1aa17ce434010dd820b583628370cc15f10f3 h: refs/heads/master v: v3 --- [refs] | 2 +- trunk/arch/x86/kernel/cpu/mtrr/main.c | 9 +++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/[refs] b/[refs] index b0227a73f823..63692db5f908 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 42fde7a05c5d6dc76e518ae12091ea897b1c132b +refs/heads/master: 99e1aa17ce434010dd820b583628370cc15f10f3 diff --git a/trunk/arch/x86/kernel/cpu/mtrr/main.c b/trunk/arch/x86/kernel/cpu/mtrr/main.c index 9086b38fbabe..663e530e08e0 100644 --- a/trunk/arch/x86/kernel/cpu/mtrr/main.c +++ b/trunk/arch/x86/kernel/cpu/mtrr/main.c @@ -1293,6 +1293,15 @@ static int __init mtrr_cleanup(unsigned address_bits) } nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base, extra_remove_size); + /* + * [0, 1M) should always be coverred by var mtrr with WB + * and fixed mtrrs should take effective before var mtrr for it + */ + nr_range = add_range_with_merge(range, nr_range, 0, + (1ULL<<(20 - PAGE_SHIFT)) - 1); + /* sort the ranges */ + sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL); + range_sums = sum_ranges(range, nr_range); printk(KERN_INFO "total RAM coverred: %ldM\n", range_sums >> (20 - PAGE_SHIFT));