octeontx2-af: Fix memory scaling limitation in SR-IOV mode

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The original code used DMA_ATTR_FORCE_CONTIGUOUS, which could exhaust
the CMA pool when a large number of VFs were requested.

Fix this by switching to the DMA streaming API. This is equivalent on
Octeon platforms, which provide full I/O coherency via the SMMU.

Cc: Leon Romanovsky <leon@kernel.org>
Fixes: 73d33dbc07 ("octeontx2-af: Use DMA_ATTR_FORCE_CONTIGUOUS attribute in DMA alloc")
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Reviewed-by: Leon Romanovsky <leon@kernel.org>
Link: https://patch.msgid.link/20260916022111.1083017-1-rkannoth@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Ratheesh Kannoth 2026-09-16 07:51:11 +05:30 • committed by Jakub Kicinski

parent 12fec40907

commit d06f2ebf67

1 changed files with 39 additions and 6 deletions

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drivers/net/ethernet/marvell/octeontx2/af/common.h

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