Messages in this thread | | | Subject | Re: [PATCH net v3 1/1] xsk: clear page contiguity bit when unmapping pool | From | patchwork-bot+netdevbpf@kernel ... | Date | Tue, 28 Jun 2022 21:00:14 +0000 |
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Hello:
This patch was applied to bpf/bpf.git (master) by Daniel Borkmann <daniel@iogearbox.net>:
On Tue, 28 Jun 2022 12:18:48 +0300 you wrote: > 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: 2b43470add8c ("xsk: Introduce AF_XDP buffer allocation API") > Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru> > > [...]
Here is the summary with links: - [net,v3,1/1] xsk: clear page contiguity bit when unmapping pool https://git.kernel.org/bpf/bpf/c/512d1999b8e9
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