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Subject[PATCH 5.13 450/800] stmmac: prefetch right address
Date
From: Matteo Croce <mcroce@microsoft.com>

[ Upstream commit 4744bf072b4640c5e2ea65c2361ad6c832f28fa8 ]

To support XDP, a headroom is prepended to the packet data.
Consider this offset when doing a prefetch.

Fixes: da5ec7f22a0f ("net: stmmac: refactor stmmac_init_rx_buffers for stmmac_reinit_rx_buffers")
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c87202cbd3d6..91cd5073ddb2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -5138,7 +5138,7 @@ read_again:

/* Buffer is good. Go on. */

- prefetch(page_address(buf->page));
+ prefetch(page_address(buf->page) + buf->page_offset);
if (buf->sec_page)
prefetch(page_address(buf->sec_page));

--
2.30.2


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