igt/gem_ctx_switch: Actually force the context-switch

The intent is that during interruptible runs we always force a
relocation between batch. This requires us to set an invalid
presumed_offset.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/gem_ctx_switch.c b/tests/gem_ctx_switch.c
index 80ebce5d..b6ea71cf 100644
--- a/tests/gem_ctx_switch.c
+++ b/tests/gem_ctx_switch.c
@@ -120,7 +120,7 @@ static void single(int fd, uint32_t handle,
 			igt_while_interruptible(flags & INTERRUPTIBLE) {
 				for (int loop = 0; loop < 64; loop++) {
 					execbuf.rsvd1 = contexts[loop % 64];
-					reloc.presumed_offset = 0;
+					reloc.presumed_offset = -1;
 					gem_execbuf(fd, &execbuf);
 				}
 				count += 64;