[Intel-xe] [PATCH v2] drm/xe: Fix BUG_ON during bind with prefetch

[Brian Welty]

It was missed that print_op needs to include DRM_GPUVA_OP_PREFETCH.

Else we hit the impossible BUG_ON:
[  886.371040] ------------[ cut here ]------------
[  886.371047] kernel BUG at drivers/gpu/drm/xe/xe_vm.c:2234!
[  886.371216] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[  886.371229] CPU: 1 PID: 3132 Comm: xe_exec_fault_m
[  886.371257] RIP: 0010:vm_bind_ioctl_ops_create+0x45f/0x470 [xe]
...
[  886.371517] Call Trace:
[  886.371525]  <TASK>
[  886.371531]  ? __die_body+0x1a/0x60
[  886.371546]  ? die+0x38/0x60
[  886.371557]  ? do_trap+0x10a/0x120
[  886.371568]  ? vm_bind_ioctl_ops_create+0x45f/0x470 [xe]

v2: add debug print for PREFETCH in print_op

Fixes: d39e49e2ad38 ("drm/xe: Port Xe to GPUVA")
Signed-off-by: Brian Welty <brian.welty at intel.com>
---
 drivers/gpu/drm/xe/xe_vm.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 6c216350084b..fc4d54425160 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -2230,6 +2230,11 @@ static void print_op(struct xe_device *xe, struct drm_gpuva_op *op)
 		       (ULL)xe_vma_start(vma), (ULL)xe_vma_size(vma),
 		       op->unmap.keep ? 1 : 0);
 		break;
+	case DRM_GPUVA_OP_PREFETCH:
+		vma = gpuva_to_vma(op->prefetch.va);
+		vm_dbg(&xe->drm, "PREFETCH: addr=0x%016llx, range=0x%016llx",
+		       (ULL)xe_vma_start(vma), (ULL)xe_vma_size(vma));
+		break;
 	default:
 		XE_BUG_ON("NOT POSSIBLE");
 	}
-- 
2.38.0