[PATCH i-g-t] tests/intel/xe_fault_injection: Pick a valid PAT index for vm_bind

[Matt Roper <matthew.d.roper@intel.com>]

The vm_bind helper function in the fault injection test failed to
specify a PAT index to use for the bind, effectively leaving the index
as 0.  On Xe2 and Xe3 platforms, index 0 provides non-coherent behavior
which is incompatible with vm_bind operations on userptr, resulting in a
test failure before the test even got to the point of intentionally
injecting errors.

Fixes: 13e3d5126 ("tests/intel/xe_fault_injection: Inject errors during vm bind IOCTL")
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/3499
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
---
 tests/intel/xe_fault_injection.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/intel/xe_fault_injection.c b/tests/intel/xe_fault_injection.c
index 7d6c90276..7ae941367 100644
--- a/tests/intel/xe_fault_injection.c
+++ b/tests/intel/xe_fault_injection.c
@@ -18,6 +18,7 @@
 #include "igt_kmod.h"
 #include "igt_sysfs.h"
 #include "lib/igt_syncobj.h"
+#include "lib/intel_pat.h"
 #include "xe/xe_ioctl.h"
 #include "xe/xe_query.h"
 
@@ -238,6 +239,7 @@ simple_vm_bind(int fd, uint32_t vm)
 		.bind.range = BO_SIZE,
 		.bind.addr = BO_ADDR,
 		.bind.op = DRM_XE_VM_BIND_OP_MAP_USERPTR,
+		.bind.pat_index = intel_get_pat_idx_wb(fd),
 		.bind.flags = 0,
 		.num_syncs = 1,
 		.syncs = (uintptr_t)&syncobj,
-- 
2.47.0