Messages in this thread Patch in this message | | | Date | Wed, 02 Jan 2008 17:41:25 -0800 | From | Yinghai Lu <> | Subject | [PATCH] x86_64: not clear empty_zero_page again |
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[PATCH] x86_64: not clear empty_zero_page again
empty_zero_page is in .bss section, and it is cleared in clear_bss by x86_64_start_kernel. So don't clear that again in mem_init
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Index: linux-2.6/arch/x86/mm/init_64.c =================================================================== --- linux-2.6.orig/arch/x86/mm/init_64.c +++ linux-2.6/arch/x86/mm/init_64.c @@ -521,8 +521,7 @@ void __init mem_init(void) pci_iommu_alloc(); - /* clear the zero-page */ - memset(empty_zero_page, 0, PAGE_SIZE); + /* clear_bss() already clear the empty_zero_page */ reservedpages = 0;
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