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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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13
drivers/gpu/drm/radeon/radeon_gem.c
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@@ -134,25 +134,16 @@ void radeon_gem_object_close(struct drm_gem_object *obj,
struct radeon_device *rdev = rbo->rdev;
struct radeon_fpriv *fpriv = file_priv->driver_priv;
struct radeon_vm *vm = &fpriv->vm;
struct radeon_bo_va *bo_va, *tmp;
if (rdev->family < CHIP_CAYMAN) {
return;
}
if (radeon_bo_reserve(rbo, false)) {
dev_err(rdev->dev, "leaking bo va because we fail to reserve bo\n");
return;
}
list_for_each_entry_safe(bo_va, tmp, &rbo->va, bo_list) {
if (bo_va->vm == vm) {
/* remove from this vm address space */
mutex_lock(&vm->mutex);
list_del(&bo_va->vm_list);
mutex_unlock(&vm->mutex);
list_del(&bo_va->bo_list);
kfree(bo_va);
}
}
radeon_vm_bo_rmv(rdev, vm, rbo);
radeon_bo_unreserve(rbo);
}