Quoting Peter Maydell:

 "These MEMTX_* aren't from the memory transaction
  API functions; they're just being used by gicd_readl() and
  friends as a way to indicate a success/failure so that the
  actual MemoryRegionOps read/write fns like gicv3_dist_read()
  can log a guest error."

We are going to introduce more MemTxResult bits, so it is
safer to check for !MEMTX_OK rather than MEMTX_ERROR.

Reviewed-by: Peter Xu <pet...@redhat.com>
Reviewed-by: David Hildenbrand <da...@redhat.com>
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com>
---
 hw/intc/arm_gicv3_redist.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/intc/arm_gicv3_redist.c b/hw/intc/arm_gicv3_redist.c
index c8ff3eca085..99b11ca5eee 100644
--- a/hw/intc/arm_gicv3_redist.c
+++ b/hw/intc/arm_gicv3_redist.c
@@ -462,7 +462,7 @@ MemTxResult gicv3_redist_read(void *opaque, hwaddr offset, 
uint64_t *data,
         break;
     }
 
-    if (r == MEMTX_ERROR) {
+    if (r != MEMTX_OK) {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "%s: invalid guest read at offset " TARGET_FMT_plx
                       " size %u\n", __func__, offset, size);
@@ -521,7 +521,7 @@ MemTxResult gicv3_redist_write(void *opaque, hwaddr offset, 
uint64_t data,
         break;
     }
 
-    if (r == MEMTX_ERROR) {
+    if (r != MEMTX_OK) {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "%s: invalid guest write at offset " TARGET_FMT_plx
                       " size %u\n", __func__, offset, size);
-- 
2.33.1


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