Re: [PATCH v3 52/70] i386/tdx: handle TDG.VP.VMCALL

Daniel P. Berrangé
2023-12-21T11:06:02Z

On Wed, Nov 15, 2023 at 02:15:01AM -0500, Xiaoyao Li wrote:
> From: Isaku Yamahata <isaku.yamahata@intel.com>
>
> For GetQuote, delegate a request to Quote Generation Service.
> Add property "quote-generation-socket" to tdx-guest, whihc is a property
> of type SocketAddress to specify Quote Generation Service(QGS).
>
> On request, connect to the QGS, read request buffer from shared guest
> memory, send the request buffer to the server and store the response
> into shared guest memory and notify TD guest by interrupt.
>
> command line example:
> qemu-system-x86_64 \
> -object '{"qom-type":"tdx-guest","id":"tdx0","quote-generation-socket":{"type": "vsock", "cid":"2","port":"1234"}}' \

Here you're illustrating a VSOCK address. IIUC, both the 'qgs'
daemon and QEMU will be running in the host. Why would they need
to be using VSOCK, as opposed to a regular UNIX socket connection ?

> -machine confidential-guest-support=tdx0
>
> Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
> Codeveloped-by: Chenyi Qiang <chenyi.qiang@intel.com>
> Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
> ---
> Changes in v3:
> - rename property "quote-generation-service" to "quote-generation-socket";
> - change the type of "quote-generation-socket" from str to
> SocketAddress;

With regards,
Daniel
--
|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org -o- https://fstop138.berrange.com :|
|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|