x86: 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>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 15e05a0..6c3f6eb 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -495,8 +495,7 @@
pci_iommu_alloc();
- /* clear the zero-page */
- memset(empty_zero_page, 0, PAGE_SIZE);
+ /* clear_bss() already clear the empty_zero_page */
reservedpages = 0;