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Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/e820.c11
-rw-r--r--arch/x86/mm/init_32.c3
2 files changed, 13 insertions, 1 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index ac5e9ebf70e..a706e9057ba 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -612,6 +612,17 @@ void __init free_early(u64 start, u64 end)
early_res[j - 1].end = 0;
}
+int __init page_is_reserved_early(unsigned long pagenr)
+{
+ u64 start = (u64)pagenr << PAGE_SHIFT;
+ int i;
+ struct early_res *r;
+
+ i = find_overlapped_early(start, start + PAGE_SIZE);
+ r = &early_res[i];
+ return (i < MAX_EARLY_RES && r->end);
+}
+
void __init early_res_to_bootmem(u64 start, u64 end)
{
int i;
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index ec30d10154b..0e7bb5e8167 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -289,7 +289,8 @@ static void __init permanent_kmaps_init(pgd_t *pgd_base)
void __init add_one_highpage_init(struct page *page, int pfn, int bad_ppro)
{
- if (page_is_ram(pfn) && !(bad_ppro && page_kills_ppro(pfn))) {
+ if (page_is_ram(pfn) && !(bad_ppro && page_kills_ppro(pfn)) &&
+ !page_is_reserved_early(pfn)) {
ClearPageReserved(page);
init_page_count(page);
__free_page(page);