Ivan Malov 5561bddd05 xsk: Clear page contiguity bit when unmapping pool ... [ Upstream commit 512d1999b8e94a5d43fba3afc73e774849674742 ] When a XSK pool gets mapped, xp_check_dma_contiguity() adds bit 0x1 to pages' DMA addresses that go in ascending order and at 4K stride. The problem is that the bit does not get cleared before doing unmap. As a result, a lot of warnings from iommu_dma_unmap_page() are seen in dmesg, which indicates that lookups by iommu_iova_to_phys() fail. Fixes: 2b43470add ("xsk: Introduce AF_XDP buffer allocation API") Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20220628091848.534803-1-ivan.malov@oktetlabs.ru Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-07-12 16:32:21 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	xsk: Introduce AF_XDP buffer allocation API	2020-05-21 17:31:26 -07:00
xdp_umem.c	xsk: Fix umem cleanup bug at socket destruct	2020-11-20 15:52:39 +01:00
xdp_umem.h	xsk: Fix umem cleanup bug at socket destruct	2020-11-20 15:52:39 +01:00
xsk_buff_pool.c	xsk: Clear page contiguity bit when unmapping pool	2022-07-12 16:32:21 +02:00
xsk_diag.c	xsk: Fix possible segfault in xsk umem diagnostics	2020-09-02 16:49:40 +02:00
xsk_queue.c	xsk: Remove MEM_TYPE_ZERO_COPY and corresponding code	2020-05-21 17:31:27 -07:00
xsk_queue.h	xsk: Fix broken Tx ring validation	2021-07-14 16:56:23 +02:00
xsk.c	Revert "xsk: Do not sleep in poll() when need_wakeup set"	2021-12-22 09:30:59 +01:00
xsk.h	xsk: Fix possible segfault at xskmap entry insertion	2020-09-02 16:52:59 +02:00
xskmap.c	bpf: Allow for map-in-map with dynamic inner array map entries	2020-10-11 10:21:04 -07:00