[PATCH] drm/radeon: fence virtual address and free it once idle v2

From: Jerome Glisse Virtual address need to be fenced to know when we can safely remove it. This patch also properly clear the pagetable. Previously it was serouisly broken. v2: For to update pagetable when unbinding bo (don't bailout if bo_va->valid is true).

[PATCH] drm/radeon: fence virtual address and free it once idle v2

From: Jerome Glisse jgli...@redhat.com Virtual address need to be fenced to know when we can safely remove it. This patch also properly clear the pagetable. Previously it was serouisly broken. v2: For to update pagetable when unbinding bo (don't bailout if bo_va-valid is true).