From: Daniel P. Berrangé <berra...@redhat.com>
The 'lsi_memcpy' method has a 4k byte array used for copying data
to/from the device. Skip the automatic zero-init of this array to
eliminate the performance overhead in the I/O hot path.
The 'buf' array will be fully initialized when data is copied.
Signed-off-by: Daniel P. Berrangé <berra...@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
Reviewed-by: Klaus Jensen <k.jen...@samsung.com>
Reviewed-by: Harsh Prateek Bora <hars...@linux.ibm.com>
Message-id: 20250610123709.835102-28-berra...@redhat.com
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
hw/scsi/lsi53c895a.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index f4f2ef321e..9ea4aa0a85 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -1112,7 +1112,7 @@ bad:
static void lsi_memcpy(LSIState *s, uint32_t dest, uint32_t src, int count)
{
int n;
- uint8_t buf[LSI_BUF_SIZE];
+ QEMU_UNINITIALIZED uint8_t buf[LSI_BUF_SIZE];
trace_lsi_memcpy(dest, src, count);
while (count) {
--
2.49.0
