Re: [RFC PATCH 1/4] linux-headers: Update for vfio capability reporting AtomicOps

[Cédric Le Goater]

On 5/19/23 23:57, Alex Williamson wrote:
> This is a partial linux-headers update for illustrative and testing
> purposes only, NOT FOR COMMIT.
>
> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
> ---
I am preparing a vfio-next tree including these changes plus a linux-headers
update. I am just waiting for the 6.5-rc1 tag to be pushed.

Thanks,

C.

>   linux-headers/linux/vfio.h | 14 ++++++++++++++
>   1 file changed, 14 insertions(+)
>
> diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
> index 4a534edbdcba..443a8851e156 100644
> --- a/linux-headers/linux/vfio.h
> +++ b/linux-headers/linux/vfio.h
> @@ -240,6 +240,20 @@ struct vfio_device_info {
>   #define VFIO_DEVICE_INFO_CAP_ZPCI_UTIL                3
>   #define VFIO_DEVICE_INFO_CAP_ZPCI_PFIP                4
>   
> +/*
> + * The following VFIO_DEVICE_INFO capability reports support for PCIe AtomicOp
> + * completion to the root bus with supported widths provided via flags.
> + */
> +#define VFIO_DEVICE_INFO_CAP_PCI_ATOMIC_COMP   5
> +struct vfio_device_info_cap_pci_atomic_comp {
> +       struct vfio_info_cap_header header;
> +       __u32 flags;
> +#define VFIO_PCI_ATOMIC_COMP32 (1 << 0)
> +#define VFIO_PCI_ATOMIC_COMP64 (1 << 1)
> +#define VFIO_PCI_ATOMIC_COMP128        (1 << 2)
> +       __u32 reserved;
> +};
> +
>   /**
>    * VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8,
>    *                                   struct vfio_region_info)