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dm: virtio: fix a asyncio/ioeventfd bug

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ACRN_IOEVENTFD_FLAG_ASYNCIO is not set when unregister ioeventfd
in the current implementation which will cause the old asyncio_desc
will be remained in hypervisor link list when switching from OVMF to
kernel.

Tracked-On: #8612

Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
This commit is contained in:
Jian Jun Chen 2023-07-12 14:46:16 +08:00 committed by acrnsi-robot
parent 91e0612e88
commit 26aece0492
1 changed files with 3 additions and 3 deletions
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6
devicemodel/hw/pci/virtio/virtio.c
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@ -1988,12 +1988,12 @@ int virtio_register_ioeventfd(struct virtio_base *base, int idx, bool is_registe
int rc = 0; int rc = 0;
if (!is_register) if (!is_register)
ioeventfd.flags = ACRN_IOEVENTFD_FLAG_DEASSIGN; ioeventfd.flags |= ACRN_IOEVENTFD_FLAG_DEASSIGN;
else if (base->iothread) if (base->iothread)
/* Enable ASYNCIO by default. If ASYNCIO is not supported by kernel /* Enable ASYNCIO by default. If ASYNCIO is not supported by kernel
* or hyperviosr, this flag will be ignored. * or hyperviosr, this flag will be ignored.
*/ */
ioeventfd.flags = ACRN_IOEVENTFD_FLAG_ASYNCIO; ioeventfd.flags |= ACRN_IOEVENTFD_FLAG_ASYNCIO;
/* register ioeventfd for kick */ /* register ioeventfd for kick */
if (base->device_caps & (1UL << VIRTIO_F_VERSION_1)) { if (base->device_caps & (1UL << VIRTIO_F_VERSION_1)) {
/* /*