[PATCH v4 22/30] drm/xe: Move vma rebinding to the drm_exec locking loop

[Matthew Brost]

From: Thomas Hellström <thomas.hellstrom at linux.intel.com>

Rebinding might allocate page-table bos, causing evictions.
To support blocking locking during these evictions,
perform the rebinding in the drm_exec locking loop.

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>
---
 drivers/gpu/drm/xe/xe_exec.c | 12 ++++--------
 drivers/gpu/drm/xe/xe_vm.c   | 12 +++++++-----
 2 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_exec.c b/drivers/gpu/drm/xe/xe_exec.c
index 7d676e3610fa..7f91b4b13634 100644
--- a/drivers/gpu/drm/xe/xe_exec.c
+++ b/drivers/gpu/drm/xe/xe_exec.c
@@ -106,6 +106,10 @@ static int xe_exec_fn(struct drm_gpuvm_exec *vm_exec)
 	if (ret)
 		return ret;
 
+	ret = xe_vm_rebind(vm, false);
+	if (ret)
+		return ret;
+
 	/*
 	 * 1 fence slot for the final submit, and 1 more for every per-tile for
 	 * GPU bind and 1 extra for CPU bind. Note that there are potentially
@@ -284,14 +288,6 @@ int xe_exec_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 		goto err_exec;
 	}
 
-	/*
-	 * Rebind any invalidated userptr or evicted BOs in the VM, non-compute
-	 * VM mode only.
-	 */
-	err = xe_vm_rebind(vm, false);
-	if (err)
-		goto err_put_job;
-
 	/* Wait for rebinds */
 	if (!xe_vm_in_lr_mode(vm)) {
 		err = drm_sched_job_add_resv_dependencies(&job->drm,
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 47a0d3a6cda5..e7bc9c3a8a83 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -519,7 +519,13 @@ static int xe_preempt_work_begin(struct drm_exec *exec, struct xe_vm *vm,
 	if (err)
 		return err;
 
-	return drm_gpuvm_validate(&vm->gpuvm, exec);
+	err = drm_gpuvm_validate(&vm->gpuvm, exec);
+	if (err)
+		return err;
+
+	err = xe_vm_rebind(vm, true);
+
+	return err;
 }
 
 static void preempt_rebind_work_func(struct work_struct *w)
@@ -571,10 +577,6 @@ static void preempt_rebind_work_func(struct work_struct *w)
 	if (err)
 		goto out_unlock;
 
-	err = xe_vm_rebind(vm, true);
-	if (err)
-		goto out_unlock;
-
 	/* Wait on rebinds */
 	wait = dma_resv_wait_timeout(xe_vm_resv(vm),
 				     DMA_RESV_USAGE_KERNEL,
-- 
2.34.1