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Re: [Qemu-devel] [PATCH 11/15] virtio-scsi: Add virtio-scsi stub device
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH 11/15] virtio-scsi: Add virtio-scsi stub device |
Date: |
Fri, 10 Feb 2012 13:46:20 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20120131 Thunderbird/10.0 |
On 02/10/2012 01:41 PM, Stefan Hajnoczi wrote:
At this early stage we still have the option of designing the device
to be little- or big-endian. I'm in favour of a fixed endianness even
though existing virtio devices tend to use guest-endian.
What do you think?
Interesting idea, but I'd say no for three reasons:
1) The virtqueue would remain in guest-endianness.
2) Even if the result is better, it is still different from every other
device, so right now it would be a one-off exception (and it would
likely remain so; it's not like there are new virtio devices every week :)).
3) I'm afraid of breaking something else, for example pSeries virtio is
doing complicated things that I don't really understand to split the I/O
BAR in two parts, the first in PCI endianness and the second in native
endianness.
Paolo