[dpdk-stable] [dpdk-dev] [PATCH] mempool/octeontx: fix natural alignment being optimized out

[Pavan Nikhilesh]

The mbox messages are naturally aligned and in some cases compiler
optimization might disregard natural alignment.
Use volatile key word to force compiler to disable optimizing and
maintain alignment.

Fixes: aecb8e093b52 ("event/octeontx: introduce specialized mbox message copy")
Cc: stable at dpdk.org

Signed-off-by: Pavan Nikhilesh <pbhagavatula at caviumnetworks.com>
---
 drivers/mempool/octeontx/octeontx_mbox.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mempool/octeontx/octeontx_mbox.c b/drivers/mempool/octeontx/octeontx_mbox.c
index 640a58d3d..c89f4f513 100644
--- a/drivers/mempool/octeontx/octeontx_mbox.c
+++ b/drivers/mempool/octeontx/octeontx_mbox.c
@@ -61,7 +61,7 @@ struct mbox_ram_hdr {
 };
 
 static inline void
-mbox_msgcpy(uint8_t *d, const uint8_t *s, uint16_t size)
+mbox_msgcpy(volatile uint8_t *d, volatile const uint8_t *s, uint16_t size)
 {
 	uint16_t i;
 
-- 
2.15.1