From d376edb4c0e8de354b484648f76a0f11170469a9 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 30 Oct 2024 17:31:25 +0800 Subject: [PATCH 1/2] virtio_blk: remove the broken zone revalidation support mainline inclusion from mainline-v6.8-rc1 commit a971ed8002110f211899279cd7295756d263b771 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB0RL4 CVE: Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a971ed8002110f211899279cd7295756d263b771 --------------------------- virtblk_revalidate_zones is called unconditionally from virtblk_config_changed_work from the virtio config_changed callback. virtblk_revalidate_zones is a bit odd in that it re-clears the zoned state for host aware or non-zoned devices, which isn't needed unless the zoned mode changed - but a zone mode change to a host managed model isn't handled at all, and virtio_blk also doesn't handle any other config change except for a capacity change is handled (and even if it was the upper layers above virtio_blk wouldn't handle it very well). But even the useful case of a size change that would add or remove zones isn't handled properly as blk_revalidate_disk_zones expects the device capacity to cover all zones, but the capacity is only updated after virtblk_revalidate_zones. As this code appears to be entirely untested and is getting in the way remove it for now, but it can be readded in a fixed version with proper test coverage if needed. Fixes: 95bfec41bd3d ("virtio-blk: add support for zoned block devices") Fixes: f1ba4e674feb ("virtio-blk: fix to match virtio spec") Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Reviewed-by: Stefan Hajnoczi Reviewed-by: Martin K. Petersen Link: https://lore.kernel.org/r/20231217165359.604246-3-hch@lst.de Signed-off-by: Jens Axboe --- drivers/block/virtio_blk.c | 26 -------------------------- 1 file changed, 26 deletions(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 41b2fd7e1b9e..40084e231c05 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -724,27 +724,6 @@ static int virtblk_report_zones(struct gendisk *disk, sector_t sector, return ret; } -static void virtblk_revalidate_zones(struct virtio_blk *vblk) -{ - u8 model; - - virtio_cread(vblk->vdev, struct virtio_blk_config, - zoned.model, &model); - switch (model) { - default: - dev_err(&vblk->vdev->dev, "unknown zone model %d\n", model); - fallthrough; - case VIRTIO_BLK_Z_NONE: - case VIRTIO_BLK_Z_HA: - disk_set_zoned(vblk->disk, BLK_ZONED_NONE); - return; - case VIRTIO_BLK_Z_HM: - WARN_ON_ONCE(!vblk->zone_sectors); - if (!blk_revalidate_disk_zones(vblk->disk, NULL)) - set_capacity_and_notify(vblk->disk, 0); - } -} - static int virtblk_probe_zoned_device(struct virtio_device *vdev, struct virtio_blk *vblk, struct request_queue *q) @@ -841,10 +820,6 @@ static int virtblk_probe_zoned_device(struct virtio_device *vdev, */ #define virtblk_report_zones NULL -static inline void virtblk_revalidate_zones(struct virtio_blk *vblk) -{ -} - static inline int virtblk_probe_zoned_device(struct virtio_device *vdev, struct virtio_blk *vblk, struct request_queue *q) { @@ -1007,7 +982,6 @@ static void virtblk_config_changed_work(struct work_struct *work) struct virtio_blk *vblk = container_of(work, struct virtio_blk, config_work); - virtblk_revalidate_zones(vblk); virtblk_update_capacity(vblk, true); } -- Gitee From 6dd273bd1461297488652e5b5053d008028d8e7b Mon Sep 17 00:00:00 2001 From: jiangdongxu Date: Wed, 30 Oct 2024 17:31:26 +0800 Subject: [PATCH 2/2] vdpa: add support for x86 and open vdpa migration build config virt inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IB0RL4 ---------------------------------------------------------------------- open CONFIG_VDPA for x86 arch and open CONFIG_VHOST_VDPA_MIGRATION build config for vdpa migration support. Signed-off-by: jiangdongxu --- arch/arm64/configs/openeuler_defconfig | 2 +- arch/x86/configs/openeuler_defconfig | 13 +++++++++++-- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 96ca8b990e22..58c97b35f793 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -6476,7 +6476,7 @@ CONFIG_VHOST_NET=m CONFIG_VHOST_SCSI=m CONFIG_VHOST_VSOCK=m CONFIG_VHOST_VDPA=m -# CONFIG_VHOST_VDPA_MIGRATION is not set +CONFIG_VHOST_VDPA_MIGRATION=y # CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set # diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index d95d966f7fb2..1f28f3853a6f 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -7128,6 +7128,7 @@ CONFIG_VIRTIO_PCI_LIB_LEGACY=y CONFIG_VIRTIO_MENU=y CONFIG_VIRTIO_PCI=y CONFIG_VIRTIO_PCI_LEGACY=y +# CONFIG_VIRTIO_VDPA is not set # CONFIG_VIRTIO_PMEM is not set CONFIG_VIRTIO_BALLOON=m CONFIG_VIRTIO_MEM=m @@ -7135,7 +7136,14 @@ CONFIG_VIRTIO_INPUT=m CONFIG_VIRTIO_MMIO=m # CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES is not set CONFIG_VIRTIO_DMA_SHARED_BUFFER=m -# CONFIG_VDPA is not set +CONFIG_VDPA=m +# CONFIG_VDPA_USER is not set +# CONFIG_IFCVF is not set +# CONFIG_MLX5_VDPA_NET is not set +# CONFIG_MLX5_VDPA_STEERING_DEBUG is not set +# CONFIG_VP_VDPA is not set +# CONFIG_ALIBABA_ENI_VDPA is not set +# CONFIG_SNET_VDPA is not set CONFIG_VHOST_IOTLB=m CONFIG_VHOST_TASK=y CONFIG_VHOST=m @@ -7143,7 +7151,8 @@ CONFIG_VHOST_MENU=y CONFIG_VHOST_NET=m # CONFIG_VHOST_SCSI is not set CONFIG_VHOST_VSOCK=m -# CONFIG_VHOST_VDPA_MIGRATION is not set +CONFIG_VHOST_VDPA=m +CONFIG_VHOST_VDPA_MIGRATION=y # CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set # -- Gitee