That sounds like the same problem I've got when drm-next was merged into drm-misc-next.
I've fixed it in this commit:
commit 0b06286579b81449b1e8f14f88d3a8db091fd443 Author: Christian König christian.koenig@amd.com Date: Wed Aug 19 15:27:48 2020 +0200
drm/ttm: fix broken merge between drm-next and drm-misc-next
drm-next reverted the changes to ttm_tt_create() to do the NULL check inside the function, but drm-misc-next adds new users of this approach.
Re-apply the NULL check change inside the function to fix this.
Signed-off-by: Christian König christian.koenig@amd.com Reviewed-by: Dave Airlie airlied@redhat.com Link: https://patchwork.freedesktop.org/patch/386628/
Not sure why it should cause problems with drm-fixes and drm-next as well.
Regards, Christian.
Am 30.09.20 um 09:09 schrieb Dave Airlie:
just FYI I'm seeing a regression on vmwgfx with drm-fixes and drm-next merged into it.
I'm going take some time to dig through and work out where, the regression is a command failure and a ioremap failure.
Dave.
On Wed, 30 Sep 2020 at 16:26, Dave Airlie airlied@gmail.com wrote:
Uggh this is part of the mess with the revert, I'm not sure how best to dig out of this one yet.
Dave.
On Wed, 30 Sep 2020 at 15:55, Dave Airlie airlied@gmail.com wrote:
From: Dave Airlie airlied@redhat.com
This fixes a bug introduced in be1213a341a289afc51f89181c310e368fba0b66 drm/ttm: remove TTM_MEMTYPE_FLAG_FIXED v2
On vmwgfx this causes a Command buffer error WARN to trigger.
This is because the old code used to check if bo->ttm was true, and the new code doesn't, fix it code to add back the check resolves the issue.
Fixes: be1213a341a2 ("drm/ttm: remove TTM_MEMTYPE_FLAG_FIXED v2") Signed-off-by: Dave Airlie airlied@redhat.com
drivers/gpu/drm/ttm/ttm_bo.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 70b3bee27850..e8aa2fe8e9d1 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -251,9 +251,11 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo, /* Zero init the new TTM structure if the old location should * have used one as well. */
ret = ttm_tt_create(bo, old_man->use_tt);if (ret)goto out_err;
if (!bo->ttm) {ret = ttm_tt_create(bo, old_man->use_tt);if (ret)goto out_err;} ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement); if (ret)-- 2.20.1
dri-devel mailing list dri-devel@lists.freedesktop.org https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.free...