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Subject: Re: [virtio-comment] Block Device: Legacy SCSI 'cmd' Framing Requirements
On 24/02/19 13:30, Savir, Gil wrote: > Regarding Version 1.1 draft 01 > > > > When using Block-device, legacy scsi commands, while VIRTIO_F_ANY_LAYOUT > is negotiated, it is not clear if ‘cmd’ field must reside in a single, > separate device-readable buffer. > > In Section 5.2.6.3 it is written, in general (without reference to > VIRTIO_F_ANY_LAYOUT) that ‘cmd’ field must reside in a single buffer. > > Section 5.2.6.4, 2^nd bullet describes framing requirements for SCSI > commands, but does not refer to ‘cmd’ field. > > I suggest adding description of ‘cmd’ field framing requirement in this > bullet, as well. Indeed, the legacy SCSI interface's framing requirements override VIRTIO_F_ANY_LAYOUT (and the impossibility of adjusting this was one of the reasons to dro it). Paolo
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