This is a note to let you know that I've just added the patch titled
Revert "net: stmmac: set PP_FLAG_DMA_SYNC_DEV only if XDP is enabled"
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-net-stmmac-set-pp_flag_dma_sync_dev-only-if-x.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f92dc28495b9d577bfcaa633858b525685562517
Author: Jakub Kicinski <kuba@xxxxxxxxxx>
Date: Fri Oct 4 07:21:15 2024 -0700
Revert "net: stmmac: set PP_FLAG_DMA_SYNC_DEV only if XDP is enabled"
[ Upstream commit 5546da79e6cc5bb3324bf25688ed05498fd3f86d ]
This reverts commit b514c47ebf41a6536551ed28a05758036e6eca7c.
The commit describes that we don't have to sync the page when
recycling, and it tries to optimize that case. But we do need
to sync after allocation. Recycling side should be changed to
pass the right sync size instead.
Fixes: b514c47ebf41 ("net: stmmac: set PP_FLAG_DMA_SYNC_DEV only if XDP is enabled")
Reported-by: Jon Hunter <jonathanh@xxxxxxxxxx>
Link: https://lore.kernel.org/20241004070846.2502e9ea@xxxxxxxxxx
Reviewed-by: Jacob Keller <jacob.e.keller@xxxxxxxxx>
Reviewed-by: Furong Xu <0x1207@xxxxxxxxx>
Link: https://patch.msgid.link/20241004142115.910876-1-kuba@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 95d3d1081727f..f3a1b179aaeac 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2022,7 +2022,7 @@ static int __alloc_dma_rx_desc_resources(struct stmmac_priv *priv,
rx_q->queue_index = queue;
rx_q->priv_data = priv;
- pp_params.flags = PP_FLAG_DMA_MAP | (xdp_prog ? PP_FLAG_DMA_SYNC_DEV : 0);
+ pp_params.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV;
pp_params.pool_size = dma_conf->dma_rx_size;
num_pages = DIV_ROUND_UP(dma_conf->dma_buf_sz, PAGE_SIZE);
pp_params.order = ilog2(num_pages);
