From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 16 Jul 2008 11:11:59 -0500 From: Jack Steiner Subject: [PATCH] - Fix kernel_physical_mapping_init() for large x86 systems Message-ID: <20080716161159.GA23870@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-linux-mm@kvack.org Return-Path: To: mingo@elte.hu, tglx@linutronix.de Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: Fix bug in kernel_physical_mapping_init() that causes kernel page table to be built incorrectly for systems with greater than 512GB of memory. Signed-off-by: Jack Steiner --- arch/x86/mm/init_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux/arch/x86/mm/init_64.c =================================================================== --- linux.orig/arch/x86/mm/init_64.c 2008-07-15 16:43:49.000000000 -0500 +++ linux/arch/x86/mm/init_64.c 2008-07-16 11:00:25.000000000 -0500 @@ -644,7 +644,7 @@ static unsigned long __init kernel_physi unsigned long pud_phys; pud_t *pud; - next = start + PGDIR_SIZE; + next = (start + PGDIR_SIZE) & PGDIR_MASK; if (next > end) next = end; -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org