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virtio-devices: Remove VIRTIO_F_RING_PACKED from default virtio features

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The cloud hypervisor tells the VM and the backend to support the PACKED_RING feature,
but it actually processes various variables according to the split ring logic, such
as last_avail_index. Eventually it will cause the following error (SPDK as an example):

    vhost.c: 516:vhost_vq_packed_ring_enqueue: *ERROR*: descriptor has been used before
    vhost_blk.c: 596:process_blk_task: *ERROR*: ====== Task 0x200113784640 req_idx 0 failed ======
    vhost.c: 629:vhost_vring_desc_payload_to_iov: *ERROR*: gpa_to_vva((nil)) == NULL

Signed-off-by: Arafatms <arafatms@outlook.com>
This commit is contained in:
Arafatms 2021-07-07 17:12:26 +08:00 committed by Sebastien Boeuf
parent c46441c937
commit 3d4e27fa0a
2 changed files with 1 additions and 3 deletions
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1
virtio-devices/src/lib.rs
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@ -67,7 +67,6 @@ const VIRTIO_F_RING_INDIRECT_DESC: u32 = 28;
const VIRTIO_F_RING_EVENT_IDX: u32 = 29;
const VIRTIO_F_VERSION_1: u32 = 32;
const VIRTIO_F_IOMMU_PLATFORM: u32 = 33;
const VIRTIO_F_RING_PACKED: u32 = 34;
const VIRTIO_F_IN_ORDER: u32 = 35;
const VIRTIO_F_ORDER_PLATFORM: u32 = 36;
#[allow(dead_code)]

3
virtio-devices/src/vhost_user/mod.rs
View File

@ -5,7 +5,7 @@ use crate::{
EpollHelper, EpollHelperError, EpollHelperHandler, GuestMemoryMmap, Queue, VirtioInterrupt,
EPOLL_HELPER_EVENT_LAST, VIRTIO_F_IN_ORDER, VIRTIO_F_NOTIFICATION_DATA,
VIRTIO_F_ORDER_PLATFORM, VIRTIO_F_RING_EVENT_IDX, VIRTIO_F_RING_INDIRECT_DESC,
VIRTIO_F_RING_PACKED, VIRTIO_F_VERSION_1,
VIRTIO_F_VERSION_1,
};
use std::io;
use std::ops::Deref;
@ -123,7 +123,6 @@ type Result<T> = std::result::Result<T, Error>;
pub const DEFAULT_VIRTIO_FEATURES: u64 = 1 << VIRTIO_F_RING_INDIRECT_DESC
| 1 << VIRTIO_F_RING_EVENT_IDX
| 1 << VIRTIO_F_VERSION_1
| 1 << VIRTIO_F_RING_PACKED
| 1 << VIRTIO_F_IN_ORDER
| 1 << VIRTIO_F_ORDER_PLATFORM
| 1 << VIRTIO_F_NOTIFICATION_DATA