Hi Leo,
Thanks for the patches
On 20/03/2019 06:20, Leo Yan wrote:
> The PCI device INTx uses event fd 'unmask_fd' to signal the deassertion
> of the line from guest to host; but this eventfd isn't released properly
> when disable INTx.
>
> This patch firstly adds field 'unmask_fd' in struct vfio_pci_device for
> storing unmask eventfd and close it when disable INTx.
>
> Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
Reviewed-by: Jean-Philippe Brucker <jean-philippe.brucker@xxxxxxx>
> ---
> include/kvm/vfio.h | 1 +
> vfio/pci.c | 2 ++
> 2 files changed, 3 insertions(+)
>
> diff --git a/include/kvm/vfio.h b/include/kvm/vfio.h
> index 60e6c54..28223cf 100644
> --- a/include/kvm/vfio.h
> +++ b/include/kvm/vfio.h
> @@ -74,6 +74,7 @@ struct vfio_pci_device {
>
> unsigned long irq_modes;
> int intx_fd;
> + int unmask_fd;
> unsigned int intx_gsi;
> struct vfio_pci_msi_common msi;
> struct vfio_pci_msi_common msix;
> diff --git a/vfio/pci.c b/vfio/pci.c
> index 03de3c1..5224fee 100644
> --- a/vfio/pci.c
> +++ b/vfio/pci.c
> @@ -1008,6 +1008,7 @@ static void vfio_pci_disable_intx(struct kvm *kvm, struct vfio_device *vdev)
> irq__del_irqfd(kvm, gsi, pdev->intx_fd);
>
> close(pdev->intx_fd);
> + close(pdev->unmask_fd);
> }
>
> static int vfio_pci_enable_intx(struct kvm *kvm, struct vfio_device *vdev)
> @@ -1095,6 +1096,7 @@ static int vfio_pci_enable_intx(struct kvm *kvm, struct vfio_device *vdev)
> }
>
> pdev->intx_fd = trigger_fd;
> + pdev->unmask_fd = unmask_fd;
> /* Guest is going to ovewrite our irq_line... */
> pdev->intx_gsi = gsi;
>
>
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