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From: "Wang, Wei W" <wei.w.wang@intel.com>
To: Jason Wang <jasowang@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
	"sgarzare@redhat.com" <sgarzare@redhat.com>,
	"davem@davemloft.net" <davem@davemloft.net>,
	"kuba@kernel.org" <kuba@kernel.org>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	"kys@microsoft.com" <kys@microsoft.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"virtualization@lists.linux-foundation.org" 
	<virtualization@lists.linux-foundation.org>,
	"Yamahata, Isaku" <isaku.yamahata@intel.com>,
	"Nakajima, Jun" <jun.nakajima@intel.com>,
	"Kleen, Andi" <andi.kleen@intel.com>,
	"srutherford@google.com" <srutherford@google.com>,
	"erdemaktas@google.com" <erdemaktas@google.com>
Subject: RE: [RFC] hypercall-vsock: add a new vsock transport
Date: Thu, 25 Nov 2021 08:43:55 +0000	[thread overview]
Message-ID: <58911901bd7b4bc3a99642214106bc2f@intel.com> (raw)
In-Reply-To: <CACGkMEsY_XkRo_P+R=ipQ1iYm-AimvLvfXUwEy40Nn4f1D_suA@mail.gmail.com>

On Thursday, November 25, 2021 2:38 PM, Jason Wang wrote:
> > We thought about virtio-mmio. There are some barriers:
> > 1) It wasn't originally intended for x86 machines. The only machine
> > type in QEMU that supports it (to run on x86) is microvm. But
> > "microvm" doesn’t support TDX currently, and adding this support might
> need larger effort.
> 
> Can you explain why microvm needs larger effort? It looks to me it fits for TDX
> perfectly since it has less attack surface.

The main thing is TDVF doesn’t support microvm so far (the based OVMF
support for microvm is still under their community discussion).

Do you guys think it is possible to add virtio-mmio support for q35?
(e.g. create a special platform bus in some fashion for memory mapped devices)
Not sure if the effort would be larger.

Thanks,
Wei




  reply	other threads:[~2021-11-25  8:46 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <71d7b0463629471e9d4887d7fcef1d8d@intel.com>
2021-11-10  9:34 ` Stefan Hajnoczi
2021-11-11  8:02   ` Wang, Wei W
2021-11-10 10:50 ` Michael S. Tsirkin
2021-11-11  7:58   ` Wang, Wei W
2021-11-11 15:19     ` Michael S. Tsirkin
2021-11-25  6:37     ` Jason Wang
2021-11-25  8:43       ` Wang, Wei W [this message]
2021-11-25 12:04         ` Gerd Hoffmann
2021-11-10 11:17 ` Stefano Garzarella
2021-11-10 21:45   ` Paraschiv, Andra-Irina
2021-11-11  8:14   ` Wang, Wei W
2021-11-11  8:24     ` Paolo Bonzini

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