From: Jerome Glisse jglisse@redhat.com
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: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_ring.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c index 31e47d8..e17faa7 100644 --- a/drivers/gpu/drm/radeon/radeon_ring.c +++ b/drivers/gpu/drm/radeon/radeon_ring.c @@ -180,7 +180,8 @@ int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib, 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) {