From 547c5355d1b1167af39e315c82aa9ff1398596f4 Mon Sep 17 00:00:00 2001 From: Andrew Hastings Date: Fri, 11 May 2007 11:23:19 +0200 Subject: x86_64: off-by-two error in aperture.c I'm using a custom BIOS to configure the northbridge GART at address 0x80000000, size 2G. Linux complains: "Aperture from northbridge cpu 0 beyond 4GB. Ignoring." I think there's an off-by-two error in arch/x86_64/kernel/aperture.c: AK: use correct types for i386 Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- drivers/char/agp/amd64-agp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/char') diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index c9f0f250d78..801abdd2906 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -268,7 +268,7 @@ static int __devinit aperture_valid(u64 aper, u32 size) printk(KERN_ERR PFX "Aperture too small (%d MB)\n", size>>20); return 0; } - if (aper + size > 0xffffffff) { + if ((u64)aper + size > 0x100000000ULL) { printk(KERN_ERR PFX "Aperture out of bounds\n"); return 0; } -- cgit v1.2.3