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x86: reserve highmem pages via reserve_early

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This patch makes early reserved highmem pages become reserved
pages. This can be used for highmem pages allocated by bootloader such
as EFI memory map, linked list of setup_data, etc.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: andi@firstfloor.org
Cc: mingo@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Huang, Ying
2008-06-02 14:26:18 +08:00
committed by Thomas Gleixner
parent d3fbe5ea95
commit d0ec2c6f2c
3 changed files with 14 additions and 1 deletions
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3
arch/x86/mm/init_32.c
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@@ -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);