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drm/radeon: fence virtual address and free it once idle v4

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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.

Kernel 3.5/3.4 need a similar patch but adapted for difference in mutex locking.

v2: For to update pagetable when unbinding bo (don't bailout if
    bo_va->valid is true).
v3: Add kernel 3.5/3.4 comment.
v4: Fix compilation warnings.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jerome Glisse
2012-08-06 12:32:21 -04:00
committed by Alex Deucher
parent 69b62ad8a4
commit e43b5ec05a
5 changed files with 55 additions and 21 deletions
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6
drivers/gpu/drm/radeon/radeon_object.c
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@@ -52,11 +52,7 @@ void radeon_bo_clear_va(struct radeon_bo *bo)
list_for_each_entry_safe(bo_va, tmp, &bo->va, bo_list) {
/* remove from all vm address space */
mutex_lock(&bo_va->vm->mutex);
list_del(&bo_va->vm_list);
mutex_unlock(&bo_va->vm->mutex);
list_del(&bo_va->bo_list);
kfree(bo_va);
radeon_vm_bo_rmv(bo->rdev, bo_va->vm, bo);
}
}