Re: [PATCH] vdpasim: protect concurrent access to iommu iotlb

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On 2020/8/6 上午9:24, Sasha Levin wrote:
Hi

[This is an automated email]

This commit has been processed because it contains a "Fixes:" tag
fixing commit: .

The bot has tested the following trees: v5.7.11, v5.4.54, v4.19.135, v4.14.190, v4.9.231, v4.4.231.

v5.7.11: Build OK!
v5.4.54: Failed to apply! Possible dependencies:
     2c53d0f64c06 ("vdpasim: vDPA device simulator")
     961e9c84077f ("vDPA: introduce vDPA bus")

v4.19.135: Failed to apply! Possible dependencies:
     2c53d0f64c06 ("vdpasim: vDPA device simulator")
     961e9c84077f ("vDPA: introduce vDPA bus")

v4.14.190: Failed to apply! Possible dependencies:
     2c53d0f64c06 ("vdpasim: vDPA device simulator")
     7b95fec6d2ff ("virtio: make VIRTIO a menuconfig to ease disabling it all")
     961e9c84077f ("vDPA: introduce vDPA bus")

v4.9.231: Failed to apply! Possible dependencies:
     0d7f4f0594fc ("MAINTAINERS: update rmk's entries")
     2c53d0f64c06 ("vdpasim: vDPA device simulator")
     384fe7a4d732 ("drivers: net: xgene-v2: Add DMA descriptor")
     3b3f9a75d931 ("drivers: net: xgene-v2: Add base driver")
     404a5c392dcc ("MAINTAINERS: fix virtio file pattern")
     51c5d8447bd7 ("MMC: meson: initial support for GX platforms")
     6bc37fac30cf ("arm64: dts: add Allwinner A64 SoC .dtsi")
     70dbd9b258d5 ("MAINTAINERS: Add entry for APM X-Gene SoC Ethernet (v2) driver")
     7683e9e52925 ("Properly alphabetize MAINTAINERS file")
     81ccd0cab29b ("drivers: net: xgene-v2: Add mac configuration")
     872d1ba47bdc ("MAINTAINERS: Add Actions Semi Owl section")
     87c586a6a0e1 ("MAINTAINERS: Update the Allwinner sunXi entry")
     961e9c84077f ("vDPA: introduce vDPA bus")
     b105bcdaaa0e ("drivers: net: xgene-v2: Add transmit and receive")
     b26bff6e52d8 ("MAINTAINERS: Add device tree bindings to mv88e6xx section")
     c0a6a5ae6b5d ("MAINTAINERS: copy virtio on balloon_compaction.c")
     d5d4602e0405 ("Staging: iio: fix a MAINTAINERS entry")
     dbaf0624ffa5 ("crypto: add virtio-crypto driver")
     fd33f3eca6bf ("MAINTAINERS: Add maintainers for the meson clock driver")

v4.4.231: Failed to apply! Possible dependencies:
     02038fd6645a ("crypto: Added Chelsio Menu to the Kconfig file")
     06a8fc78367d ("VSOCK: Introduce virtio_vsock_common.ko")
     2c53d0f64c06 ("vdpasim: vDPA device simulator")
     404a5c392dcc ("MAINTAINERS: fix virtio file pattern")
     433cd2c617bf ("crypto: rockchip - add crypto driver for rk3288")
     6f99612e2500 ("tpm: Proxy driver for supporting multiple emulated TPMs")
     961e9c84077f ("vDPA: introduce vDPA bus")
     c0a6a5ae6b5d ("MAINTAINERS: copy virtio on balloon_compaction.c")
     dbaf0624ffa5 ("crypto: add virtio-crypto driver")


NOTE: The patch will not be queued to stable trees until it is upstream.

How should we proceed with this patch?


The patch tries to fix a bug which is a commit introduced in 5.4.

So I think backporting it to 5.4 stable should be sufficient.

Thanks







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