From: mst@redhat.com (Michael S. Tsirkin)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] virtio-mmio: handle BE guests on LE hosts
Date: Mon, 14 Oct 2013 15:51:31 +0300 [thread overview]
Message-ID: <20131014125131.GD31534@redhat.com> (raw)
In-Reply-To: <525BE53C.6010100@arm.com>
On Mon, Oct 14, 2013 at 01:36:12PM +0100, Marc Zyngier wrote:
> On 14/10/13 09:21, Rusty Russell wrote:
> > Marc Zyngier <marc.zyngier@arm.com> writes:
> >> This small patch series adds just enough kernel infrastructure and
> >> fixes to allow a BE guest to use virtio-mmio on a LE host, provided
> >> that the host actually supports such madness.
> >>
> >> This has been tested on arm64, with some fixes to KVM and a set of
> >> changes to kvmtool, both which I am posting separately.
> >
> > OK, so I already have a patch which supports config space accessors.
> > I've posted the series below, and since you want it, I'll put it in
> > virtio-next after more testing and rebasing...
>
> Yes, that's definitely something I'd like to see being merged, as it
> would allow me to drop a significant chunk of changes.
>
> > But we won't be using feature bits for endianness, since we're defining
> > endian in the 1.0 spec (whether LE-everywhere or LE-for-mmio-and-PCI is
> > still debated). Since we need to guess for backwards compat anyway,
> > let's keep doing this until v1.0?
>
> When is 1.0 going to happen? When will actual implementation of drivers
> and devices show up in my favourite platform emulation?
>
> Having a grand plan for the future is great, but I need something
> working right now, or at least fairly soonish... And I need it to be
> backward compatible, as none of the above is going to show up overnight.
> > (Yeah, I made this mess with "native endian". I promise I have learnt
> > my lesson).
>
> Paracetamol bill coming you way... ;-)
>
> M.
> --
> Jazz is not dead. It just smells funny...
You can help by reviewing the proposals here:
mmio specific parts:
https://www.oasis-open.org/apps/org/workgroup/virtio/email/archives/201310/msg00123.html
generic changes:
http://markmail.org/search/?q=subject%3A%22%5BPATCH%5D%20configuration%20space%20endian-ness%22+list%3A%22org.oasis-open.lists.virtio%22
http://markmail.org/search/?q=subject%3A%22%5BPATCH%5D%20virtqueue%20endian-ness%22+list%3A%22org.oasis-open.lists.virtio%22
These are incremental patches against the current draft -
reviewing it would also be helpful:
https://tools.oasis-open.org/version-control/svn/virtio
We discuss virtio implementation issues at
virtio-dev at lists.oasis-open.org
--
MST
next prev parent reply other threads:[~2013-10-14 12:51 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-11 14:36 [PATCH 0/3] virtio-mmio: handle BE guests on LE hosts Marc Zyngier
2013-10-11 14:36 ` [PATCH 1/3] virtio: let the guest report its endianess if advertized by the host Marc Zyngier
2013-10-11 14:36 ` [PATCH 2/3] virtio: mmio: fix signature checking for BE guests Marc Zyngier
2013-10-14 8:46 ` Pawel Moll
2013-10-14 9:11 ` Rusty Russell
2013-11-05 3:36 ` Rusty Russell
2013-11-05 10:45 ` Pawel Moll
2013-11-07 0:36 ` Rusty Russell
2013-10-11 14:36 ` [PATCH 3/3] virtio: mmio: access configuration space as little-endian Marc Zyngier
2013-10-14 8:44 ` Pawel Moll
2013-10-12 18:28 ` [PATCH 0/3] virtio-mmio: handle BE guests on LE hosts Michael S. Tsirkin
2013-10-14 8:24 ` Marc Zyngier
2013-10-14 8:59 ` Michael S. Tsirkin
2013-10-14 9:04 ` Pawel Moll
2013-10-14 10:46 ` Michael S. Tsirkin
2013-10-14 10:50 ` Pawel Moll
2013-10-14 23:02 ` Rusty Russell
2013-10-14 9:13 ` Rusty Russell
2013-10-14 8:21 ` Rusty Russell
2013-10-14 12:36 ` Marc Zyngier
2013-10-14 12:51 ` Michael S. Tsirkin [this message]
2013-10-17 0:27 ` Rusty Russell
2013-10-14 13:03 ` Paolo Bonzini
2013-10-14 13:10 ` Alexander Graf
2013-10-14 13:13 ` Paolo Bonzini
2013-10-14 13:24 ` Marc Zyngier
2013-10-14 13:29 ` Paolo Bonzini
2013-10-14 13:39 ` Alexander Graf
2013-10-14 13:49 ` Marc Zyngier
2013-10-14 14:05 ` Michael S. Tsirkin
2013-10-14 14:13 ` Marc Zyngier
2013-10-14 14:16 ` Alexander Graf
2013-10-14 14:52 ` Marc Zyngier
2013-10-14 14:56 ` Paolo Bonzini
2013-10-14 15:12 ` Marc Zyngier
2013-10-14 15:22 ` Paolo Bonzini
2013-10-14 15:36 ` Marc Zyngier
2013-10-14 16:50 ` Paolo Bonzini
2013-10-14 17:10 ` Michael S. Tsirkin
2013-10-14 23:23 ` Rusty Russell
2013-10-15 6:38 ` Michael S. Tsirkin
2013-10-15 9:19 ` Marc Zyngier
2013-10-14 15:45 ` Anup Patel
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