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Message-Id: <20210712061014.994190372@linuxfoundation.org>
Date: Mon, 12 Jul 2021 08:07:53 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Matteo Croce <mcroce@...rosoft.com>,
"David S. Miller" <davem@...emloft.net>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.13 450/800] stmmac: prefetch right address
From: Matteo Croce <mcroce@...rosoft.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@...rosoft.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.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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