Re: [virtio-dev] [PATCH v5 04/10] vhost-user: update shared memory capability

[Stefan Hajnoczi <stefanha@redhat.com>]

On Mon, May 18, 2020 at 11:37:15PM +0300, Nikos Dragazis wrote:
> The virtio vhost-user device has shared memory resources. Therefore, it
> uses the VIRTIO_PCI_CAP_SHARED_MEMORY_CFG capability to standardize
> those resources through the PCI Configuration Space. This patch
> synchronizes the virtio vhost-user device spec with the following shared
> memory resources PATCH:
> 
> https://lists.oasis-open.org/archives/virtio-dev/201902/msg00142.html
> 
> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
> Signed-off-by: Nikos Dragazis <ndragazis@arrikto.com>
> ---
>  virtio-vhost-user.tex | 17 ++++++++++++++++-
>  1 file changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/virtio-vhost-user.tex b/virtio-vhost-user.tex
> index 7a8cd9c..d1305dd 100644
> --- a/virtio-vhost-user.tex
> +++ b/virtio-vhost-user.tex
> @@ -320,7 +320,22 @@ \subsubsection{Notification structure layout}\label{sec:Device Types / Vhost-use
>  \subsubsection{Shared memory capability}\label{sec:Device Types / Vhost-user Device Backend / Additional Device Resources over PCI / Shared Memory capability}
>  
>  The shared memory location is found using the VIRTIO_PCI_CAP_SHARED_MEMORY_CFG

Now that Shared Memory Resources are part of the VIRTIO device model the
virtio-vhost-user spec should not refer to PCI-specific details anymore.
It should just explain which Shared Memory Resources are available on
the device. The mapping to PCI is already covered in the VIRTIO PCI
transport spec section.

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