linux-kernel - [PATCH] [44/223] drm/radeon/kms: MC vram map needs to be >= pci aperture size

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 13 Dec 2010 00:45:41 +0100 (CET)
From:	Andi Kleen <andi@...stfloor.org>
To:	alexdeucher@...il.com, airlied@...hat.com, gregkh@...e.de,
	ak@...ux.intel.com, linux-kernel@...r.kernel.org, stable@...nel.org
Subject: [PATCH] [44/223] drm/radeon/kms: MC vram map needs to be >= pci aperture size

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Alex Deucher <alexdeucher@...il.com>

commit b7d8cce5b558e0c0aa6898c9865356481598b46d upstream.

The vram map in the radeon memory controller needs to be
>= the pci aperture size.  Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=28402

The problematic cards in the above bug have 64 MB of vram,
but the pci aperture is 128 MB and the MC vram map was only
64 MB.  This can lead to hangs.

Signed-off-by: Alex Deucher <alexdeucher@...il.com>
Signed-off-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
Signed-off-by: Andi Kleen <ak@...ux.intel.com>

---
 drivers/gpu/drm/radeon/r100.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux/drivers/gpu/drm/radeon/r100.c
===================================================================
--- linux.orig/drivers/gpu/drm/radeon/r100.c
+++ linux/drivers/gpu/drm/radeon/r100.c
@@ -2321,6 +2321,9 @@ void r100_vram_init_sizes(struct radeon_
 		/* Fix for RN50, M6, M7 with 8/16/32(??) MBs of VRAM - 
 		 * Novell bug 204882 + along with lots of ubuntu ones
 		 */
+		if (rdev->mc.aper_size > config_aper_size)
+			config_aper_size = rdev->mc.aper_size;
+
 		if (config_aper_size > rdev->mc.real_vram_size)
 			rdev->mc.mc_vram_size = config_aper_size;
 		else
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/