linux-kernel - Re: [RFC PATCH v2 2/3] virtio_pci: add a definition of queue flag in ISR

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Date:   Mon, 8 May 2023 11:59:00 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Shunsuke Mie <mie@...l.co.jp>
Cc:     Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "Michael S. Tsirkin" <mst@...hat.com>, Frank Li <Frank.Li@....com>,
        Jon Mason <jdmason@...zu.us>,
        Randy Dunlap <rdunlap@...radead.org>,
        Ren Zhijie <renzhijie2@...wei.com>,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Subject: Re: [RFC PATCH v2 2/3] virtio_pci: add a definition of queue flag in ISR

On Thu, Apr 27, 2023 at 6:44 PM Shunsuke Mie <mie@...l.co.jp> wrote:
>
> Already it has beed defined a config changed flag of ISR, but not the queue

Typo should be "been".

> flag. Add a macro for it.
>
> Signed-off-by: Shunsuke Mie <mie@...l.co.jp>

Other than this,

Acked-by: Jason Wang <jasowang@...hat.com>

> ---
>  include/uapi/linux/virtio_pci.h | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
> index f703afc7ad31..d405bea27240 100644
> --- a/include/uapi/linux/virtio_pci.h
> +++ b/include/uapi/linux/virtio_pci.h
> @@ -94,6 +94,9 @@
>
>  #endif /* VIRTIO_PCI_NO_LEGACY */
>
> +/* Bits for ISR status field:only when if MSI-X is disabled */
> +/* The bit of the ISR which indicates a queue entry update. */
> +#define VIRTIO_PCI_ISR_QUEUE           0x1
>  /* The bit of the ISR which indicates a device configuration change. */
>  #define VIRTIO_PCI_ISR_CONFIG          0x2
>  /* Vector value used to disable MSI for queue */
> --
> 2.25.1
>