Replace gem_mmap_gtt and write-once mmaps with
gem_mmap__device_coherent.

For use as an invalid pointer, we need only worry about having an
mmap_offset (gtt or wc) as they work alike inside the kernel with
respect to locking. (GTT has the extra vm->mutex, but if there's no
aperture, there's never going to be such a mutex to worry about!)

Signed-off-by: Chris Wilson <[email protected]>
---
 tests/i915/gem_exec_balancer.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tests/i915/gem_exec_balancer.c b/tests/i915/gem_exec_balancer.c
index 6b0c47f09..150eba0db 100644
--- a/tests/i915/gem_exec_balancer.c
+++ b/tests/i915/gem_exec_balancer.c
@@ -278,7 +278,8 @@ static void invalid_balancer(int i915)
                igt_assert_eq(__gem_context_set_param(i915, &p), -EFAULT);
 
                handle = gem_create(i915, 4096 * 3);
-               ptr = gem_mmap__gtt(i915, handle, 4096 * 3, PROT_WRITE);
+               ptr = gem_mmap__device_coherent(i915, handle, 0, 4096 * 3,
+                                               PROT_WRITE);
                gem_close(i915, handle);
 
                memset(&engines, 0, sizeof(engines));
@@ -369,7 +370,7 @@ static void invalid_bonds(int i915)
        gem_context_set_param(i915, &p);
 
        handle = gem_create(i915, 4096 * 3);
-       ptr = gem_mmap__gtt(i915, handle, 4096 * 3, PROT_WRITE);
+       ptr = gem_mmap__device_coherent(i915, handle, 0, 4096 * 3, PROT_WRITE);
        gem_close(i915, handle);
 
        memcpy(ptr + 4096, &bonds[0], sizeof(bonds[0]));
@@ -720,7 +721,7 @@ static uint32_t create_semaphore_to_spinner(int i915, 
igt_spin_t *spin)
        uint64_t addr;
 
        handle = gem_create(i915, 4096);
-       cs = map = gem_mmap__cpu(i915, handle, 0, 4096, PROT_WRITE);
+       cs = map = gem_mmap__device_coherent(i915, handle, 0, 4096, PROT_WRITE);
 
        /* Wait until the spinner is running */
        addr = spin->obj[0].offset + 4 * SPIN_POLL_START_IDX;
-- 
2.25.0

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