This is a note to let you know that I've just added the patch titled
drm/radeon: Always flush the VM
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-always-flush-the-vm.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 466476dfdcafbb4286ffa232a3a792731b9dc852 Mon Sep 17 00:00:00 2001
From: Jerome Glisse <jglisse@xxxxxxxxxx>
Date: Tue, 16 Apr 2013 12:20:15 -0400
Subject: drm/radeon: Always flush the VM
From: Jerome Glisse <jglisse@xxxxxxxxxx>
commit 466476dfdcafbb4286ffa232a3a792731b9dc852 upstream.
This is slightly cleaned up version of Jerome's patch.
There seems to be an issue tracking the last flush of
the VM which results in hangs in certain cases when
VM is used. For now just flush the VM for every IB.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=62959
https://bugs.freedesktop.org/show_bug.cgi?id=62997
Signed-off-by: Jerome Glisse <jglisse@xxxxxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon_ring.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -161,7 +161,8 @@ int radeon_ib_schedule(struct radeon_dev
radeon_semaphore_free(rdev, &ib->semaphore, NULL);
}
/* if we can't remember our last VM flush then flush now! */
- if (ib->vm && !ib->vm->last_flush) {
+ /* XXX figure out why we have to flush for every IB */
+ if (ib->vm /*&& !ib->vm->last_flush*/) {
radeon_ring_vm_flush(rdev, ib->ring, ib->vm);
}
if (const_ib) {
Patches currently in stable-queue which might be from jglisse@xxxxxxxxxx are
queue-3.8/drm-radeon-always-flush-the-vm.patch
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