From: Paolo Bonzini <pbonzini@redhat.com>
To: "Nicholas A. Bellinger" <nab@linux-iscsi.org>,
"Michael S. Tsirkin" <mst@redhat.com>
Cc: kvm-devel <kvm@vger.kernel.org>,
target-devel <target-devel@vger.kernel.org>
Subject: Re: vhost-scsi support for ANY_LAYOUT
Date: Tue, 27 Jan 2015 09:56:01 +0100 [thread overview]
Message-ID: <54C752A1.4040406@redhat.com> (raw)
In-Reply-To: <54C74F6E.6000805@redhat.com>
On 27/01/2015 09:42, Paolo Bonzini wrote:
> > *) When ANY_LAYOUT is negotiated by vhost-scsi, it's expected that
> > virtio-scsi request + response headers may be (but not always..?)
> > combined with data-out + data-in payloads into a single iovec.
Note that request and data-out can be combined, and response + data-in
can be combined, but there still have to be separate iovecs for at least
outgoing and incoming buffers (so 2 buffers for the control and request
queues; 1 buffer for the event queue since it's unidirectional.
Paolo
next prev parent reply other threads:[~2015-01-27 8:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-27 6:35 vhost-scsi support for ANY_LAYOUT Nicholas A. Bellinger
2015-01-27 8:42 ` Paolo Bonzini
2015-01-27 8:56 ` Paolo Bonzini [this message]
2015-01-27 8:58 ` Michael S. Tsirkin
2015-01-27 8:52 ` Michael S. Tsirkin
2015-01-27 8:52 ` Michael S. Tsirkin
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