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Message-Id: <20220704140129.6463-1-fmdefrancesco@gmail.com>
Date: Mon, 4 Jul 2022 16:01:29 +0200
From: "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To: Jesse Brandeburg <jesse.brandeburg@...el.com>,
Tony Nguyen <anthony.l.nguyen@...el.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Jesper Dangaard Brouer <hawk@...nel.org>,
John Fastabend <john.fastabend@...il.com>,
intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Cc: "Fabio M. De Francesco" <fmdefrancesco@...il.com>,
Ira Weiny <ira.weiny@...el.com>,
Alexander Duyck <alexander.duyck@...il.com>
Subject: [PATCH] ixgbe: Don't call kmap() on page allocated with GFP_ATOMIC
Pages allocated with GFP_ATOMIC cannot come from Highmem. This is why
there is no need to call kmap() on them.
Therefore, don't call kmap() on rx_buffer->page() and instead use a
plain page_address() to get the kernel address.
Suggested-by: Ira Weiny <ira.weiny@...el.com>
Suggested-by: Alexander Duyck <alexander.duyck@...il.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 628d0eb0599f..71196fd92f81 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -1966,15 +1966,13 @@ static bool ixgbe_check_lbtest_frame(struct ixgbe_rx_buffer *rx_buffer,
frame_size >>= 1;
- data = kmap(rx_buffer->page) + rx_buffer->page_offset;
+ data = page_address(rx_buffer->page) + rx_buffer->page_offset;
if (data[3] != 0xFF ||
data[frame_size + 10] != 0xBE ||
data[frame_size + 12] != 0xAF)
match = false;
- kunmap(rx_buffer->page);
-
return match;
}
--
2.36.1
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