x86: not clear empty_zero_page again · 48ddb154cf - Gogs

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>

Yinghai Lu 17 years ago

parent

e83a5fdca8

commit

48ddb154cf

1 changed files with 1 additions and 2 deletions

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							+ 1
							
							- 2
						
arch/x86/mm/init_64.c
							 
								View File
							
				@@ -495,8 +495,7 @@ 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;