Re: [PATCH 1/2] drm/radeon: allways add the VM clear duplicate

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On 08.07.2015 18:14, Alex Deucher wrote:
On Wed, Jul 8, 2015 at 12:08 PM, Christian König
<deathsimple@xxxxxxxxxxx> wrote:
On 08.07.2015 17:57, Alex Deucher wrote:
On Wed, Jul 8, 2015 at 3:56 AM, Christian König <deathsimple@xxxxxxxxxxx>
wrote:
From: Christian König <christian.koenig@xxxxxxx>

We need to allways add the VM clear duplicate of the BO_VA,
no matter what the old status was.

Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Test-by: hadack@xxxxxx
This patch does not apply cleanly.  It also adds an undefined label
error_unreserve.  Is there an additional patch required?

That's possible, but I thought the depending patch would have already been
upstream.

Can you create a drm-fixes-4.2 branch I can rebase on?
http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-fixes-4.2-wip

Ah, here is the problem. This branch don't yet contains the fixes which went upstream with 4.1.

What should we do? I don't want to change those patches and create a merge conflict when you merge in 4.1.

Christian.


Thanks,

Alex

Thanks,
Christian.


Alex

---
   drivers/gpu/drm/radeon/radeon_vm.c | 34
++++++++++++++++------------------
   1 file changed, 16 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_vm.c
b/drivers/gpu/drm/radeon/radeon_vm.c
index ec10533..0310965 100644
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -493,29 +493,27 @@ int radeon_vm_bo_set_addr(struct radeon_device
*rdev,
          }

          if (bo_va->it.start || bo_va->it.last) {
-               spin_lock(&vm->status_lock);
-               if (list_empty(&bo_va->vm_status)) {
-                       /* add a clone of the bo_va to clear the old
address */
-                       struct radeon_bo_va *tmp;
-                       spin_unlock(&vm->status_lock);
-                       tmp = kzalloc(sizeof(struct radeon_bo_va),
GFP_KERNEL);
-                       if (!tmp) {
-                               mutex_unlock(&vm->mutex);
-                               r = -ENOMEM;
-                               goto error_unreserve;
-                       }
-                       tmp->it.start = bo_va->it.start;
-                       tmp->it.last = bo_va->it.last;
-                       tmp->vm = vm;
-                       tmp->bo = radeon_bo_ref(bo_va->bo);
-                       spin_lock(&vm->status_lock);
-                       list_add(&tmp->vm_status, &vm->freed);
+               /* add a clone of the bo_va to clear the old address */
+               struct radeon_bo_va *tmp;
+               tmp = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL);
+               if (!tmp) {
+                       mutex_unlock(&vm->mutex);
+                       r = -ENOMEM;
+                       goto error_unreserve;
                  }
-               spin_unlock(&vm->status_lock);
+               tmp->it.start = bo_va->it.start;
+               tmp->it.last = bo_va->it.last;
+               tmp->vm = vm;
+               tmp->bo = radeon_bo_ref(bo_va->bo);

                  interval_tree_remove(&bo_va->it, &vm->va);
                  bo_va->it.start = 0;
                  bo_va->it.last = 0;
+
+               spin_lock(&vm->status_lock);
+               list_del_init(&bo_va->vm_status);
+               list_add(&tmp->vm_status, &vm->freed);
+               spin_unlock(&vm->status_lock);
          }

          if (soffset || eoffset) {
--
1.9.1


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