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Message-ID: <506E9075.6000104@redhat.com> Date: Fri, 05 Oct 2012 09:47:01 +0200 From: Paolo Bonzini <pbonzini@...hat.com> To: Rusty Russell <rusty@...tcorp.com.au> CC: Anthony Liguori <anthony@...emonkey.ws>, "Michael S. Tsirkin" <mst@...hat.com>, Thomas Lendacky <tahm@...ux.vnet.ibm.com>, Sasha Levin <levinsasha928@...il.com>, virtualization@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, avi@...hat.com, kvm@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [PATCH 0/3] virtio-net: inline header support Il 04/10/2012 09:44, Rusty Russell ha scritto: > -In particular, no implementation should use the descriptor > -boundaries to determine the size of any header in a request.[footnote: > -The current qemu device implementations mistakenly insist that > -the first descriptor cover the header in these cases exactly, so > -a cautious driver should arrange it so. > +[footnote: > +It was previously asserted that framing should be independent of > +message contents, yet invariably drivers layed out messages in > +reliable ways and devices assumed it. In addition, the > +specifications for virtio_blk and virtio_scsi require intuiting > +field lengths from frame boundaries. > ] Not true for virtio_scsi... Paolo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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