From: Lorenzo Stoakes <lstoakes@gmail.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: linux-kernel@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
Anders Roxell <anders.roxell@linaro.org>,
virtualization@lists.linux-foundation.org,
linux-block@vger.kernel.org,
Stefan Hajnoczi <stefanha@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH] virtio-blk: fix probe without CONFIG_BLK_DEV_ZONED
Date: Wed, 21 Dec 2022 19:32:06 +0000 [thread overview]
Message-ID: <Y6NfNoFdrxJXu82U@lucifer> (raw)
In-Reply-To: <20221220112340.518841-1-mst@redhat.com>
On Tue, Dec 20, 2022 at 06:23:44AM -0500, Michael S. Tsirkin wrote:
> When building without CONFIG_BLK_DEV_ZONED, VIRTIO_BLK_F_ZONED
> is excluded from array of driver features.
> As a result virtio_has_feature panics in virtio_check_driver_offered_feature
> since that by design verifies that a feature we are checking for
> is listed in the feature array.
>
> To fix, replace the call to virtio_has_feature with a stub.
>
> Tested-by: Anders Roxell <anders.roxell@linaro.org>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> ---
> drivers/block/virtio_blk.c | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
> index 88b3639f8536..5ea1dc882a80 100644
> --- a/drivers/block/virtio_blk.c
> +++ b/drivers/block/virtio_blk.c
> @@ -760,6 +760,10 @@ static int virtblk_probe_zoned_device(struct virtio_device *vdev,
> return ret;
> }
>
> +static inline bool virtblk_has_zoned_feature(struct virtio_device *vdev)
> +{
> + return virtio_has_feature(vdev, VIRTIO_BLK_F_ZONED);
> +}
> #else
>
> /*
> @@ -775,6 +779,11 @@ static inline int virtblk_probe_zoned_device(struct virtio_device *vdev,
> {
> return -EOPNOTSUPP;
> }
> +
> +static inline bool virtblk_has_zoned_feature(struct virtio_device *vdev)
> +{
> + return false;
> +}
> #endif /* CONFIG_BLK_DEV_ZONED */
>
> /* return id (s/n) string for *disk to *id_str
> @@ -1480,7 +1489,7 @@ static int virtblk_probe(struct virtio_device *vdev)
> virtblk_update_capacity(vblk, false);
> virtio_device_ready(vdev);
>
> - if (virtio_has_feature(vdev, VIRTIO_BLK_F_ZONED)) {
> + if (virtblk_has_zoned_feature(vdev)) {
> err = virtblk_probe_zoned_device(vdev, vblk, q);
> if (err)
> goto out_cleanup_disk;
> --
> MST
>
> _______________________________________________
> Virtualization mailing list
> Virtualization@lists.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/virtualization
Tested-by: Lorenzo Stoakes <lstoakes@gmail.com>
prev parent reply other threads:[~2022-12-21 19:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-20 11:23 [PATCH] virtio-blk: fix probe without CONFIG_BLK_DEV_ZONED Michael S. Tsirkin
2022-12-20 19:50 ` Stefan Hajnoczi
2022-12-20 22:57 ` Chaitanya Kulkarni
2022-12-21 3:23 ` Jason Wang
2022-12-21 19:32 ` Lorenzo Stoakes [this message]
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