From: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
Date: Mon, 4 Jul 2022 16:01:29 +0200
Subject: ixgbe: Don't call kmap() on page allocated with GFP_ATOMIC
Patch-mainline: v6.1-rc1
Git-commit: 03f51719df032637250af828f9a1ffcc5695982d
References: jsc#PED-373

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@intel.com>
Suggested-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -1965,15 +1965,13 @@ static bool ixgbe_check_lbtest_frame(str
 
 	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;
 }