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Re: [RFC for Linux v4 1/2] virtio_balloon: Add VIRTIO_BALLOON_F_CONT_PAG


From: Michael S. Tsirkin
Subject: Re: [RFC for Linux v4 1/2] virtio_balloon: Add VIRTIO_BALLOON_F_CONT_PAGES and inflate_cont_vq
Date: Thu, 16 Jul 2020 02:43:25 -0400

On Thu, Jul 16, 2020 at 10:41:51AM +0800, Hui Zhu wrote:
> diff --git a/include/uapi/linux/virtio_balloon.h 
> b/include/uapi/linux/virtio_balloon.h
> index dc3e656..4d0151a 100644
> --- a/include/uapi/linux/virtio_balloon.h
> +++ b/include/uapi/linux/virtio_balloon.h
> @@ -37,6 +37,7 @@
>  #define VIRTIO_BALLOON_F_FREE_PAGE_HINT      3 /* VQ to report free pages */
>  #define VIRTIO_BALLOON_F_PAGE_POISON 4 /* Guest is using page poisoning */
>  #define VIRTIO_BALLOON_F_REPORTING   5 /* Page reporting virtqueue */
> +#define VIRTIO_BALLOON_F_CONT_PAGES  6 /* VQ to report continuous pages */
>  
>  /* Size of a PFN in the balloon interface. */
>  #define VIRTIO_BALLOON_PFN_SHIFT 12

So how does the guest/host interface look like?
Could you write up something about it?




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