[PATCH] eal/x86: remove redundant round to improve performance

[Leyi Rong]

In rte_memcpy_aligned(), one redundant round is taken in the 64 bytes
block copy loops if the size is a multiple of 64. So, let the catch-up
copy the last 64 bytes in this case.

Suggested-by: Morten Brørup <mb at smartsharesystems.com>
Signed-off-by: Leyi Rong <leyi.rong at intel.com>
---
 lib/eal/x86/include/rte_memcpy.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/eal/x86/include/rte_memcpy.h b/lib/eal/x86/include/rte_memcpy.h
index d4d7a5cfc8..fd151be708 100644
--- a/lib/eal/x86/include/rte_memcpy.h
+++ b/lib/eal/x86/include/rte_memcpy.h
@@ -846,7 +846,7 @@ rte_memcpy_aligned(void *dst, const void *src, size_t n)
 	}
 
 	/* Copy 64 bytes blocks */
-	for (; n >= 64; n -= 64) {
+	for (; n > 64; n -= 64) {
 		rte_mov64((uint8_t *)dst, (const uint8_t *)src);
 		dst = (uint8_t *)dst + 64;
 		src = (const uint8_t *)src + 64;
-- 
2.34.1