[PATCH igt v4 10/13] igt/gem_exec_parse: update cmd-crossing-page for >= v8

[Robert Bragg <robert@sixbynine.org>]

Since an access violation won't return an error to userspace for v >= 8
of the command parser this updates the cmd-crossing-page test to
explicitly read back from SO_WRITE_OFFSET[0] to see that the command
wasn't squashed to a NOOP.

Signed-off-by: Robert Bragg <robert@sixbynine.org>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
---
 tests/gem_exec_parse.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/tests/gem_exec_parse.c b/tests/gem_exec_parse.c
index d5769e4..5c67e12 100644
--- a/tests/gem_exec_parse.c
+++ b/tests/gem_exec_parse.c
@@ -531,14 +531,25 @@ igt_main
 	igt_subtest("cmd-crossing-page") {
 		uint32_t lri_ok[] = {
 			MI_LOAD_REGISTER_IMM,
-			0x5280, /* allowed register address (SO_WRITE_OFFSET[0]) */
-			0x1,
+			SO_WRITE_OFFSET_0, /* allowed register address */
+			0xdcbaabc0, /* [1:0] MBZ */
+			MI_BATCH_BUFFER_END,
+		};
+		uint32_t store_reg[] = {
+			MI_STORE_REGISTER_MEM | (3 - 2),
+			SO_WRITE_OFFSET_0,
+			0, /* reloc */
 			MI_BATCH_BUFFER_END,
 		};
 		exec_split_batch(fd,
 				 lri_ok, sizeof(lri_ok),
 				 I915_EXEC_RENDER,
 				 0);
+		exec_batch_patched(fd, handle,
+				   store_reg,
+				   sizeof(store_reg),
+				   2 * sizeof(uint32_t), /* reloc */
+				   0xdcbaabc0);
 	}
 
 	igt_subtest("oacontrol-tracking") {
-- 
2.10.1

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