From: Rusty Russell <rusty@rustcorp.com.au>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "Andreas Färber" <afaerber@suse.de>,
"Anthony Liguori" <anthony@codemonkey.ws>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 1/7] virtio: allow byte swapping for vring and config access
Date: Mon, 12 Aug 2013 17:19:28 +0930 [thread overview]
Message-ID: <87d2pjmjqv.fsf@rustcorp.com.au> (raw)
In-Reply-To: <CAFEAcA9ivxDXO=Z7fnPZucADfP=SN8V+J-X7k_s-FJrwY-CLXw@mail.gmail.com>
Peter Maydell <peter.maydell@linaro.org> writes:
> On 9 August 2013 08:35, Rusty Russell <rusty@rustcorp.com.au> wrote:
>> That's a lot of replumbing and indirect function calls for a fairly
>> obscure case. We certainly don't have a nice CPUState lying around in
>> virtio at the moment, for example.
>
> Actually if you're in an IO routine you do: it will be in the
> global variable 'current_cpu'. Most IO functions don't need this,
> but it's what we use for things like "this device behaviour varies
> depending on which CPU accesses it".
Hmm, that was NULL for me when called from virtio. I have stuck with
first_cpu in the ppc64 case.
Patches coming,
Rusty.
next prev parent reply other threads:[~2013-08-12 8:01 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-08 5:15 [Qemu-devel] [PATCH 0/7] Virtio support for endian-curious guests Rusty Russell
2013-08-08 5:15 ` [Qemu-devel] [PATCH 1/7] virtio: allow byte swapping for vring and config access Rusty Russell
2013-08-08 13:31 ` Anthony Liguori
2013-08-08 14:28 ` Andreas Färber
2013-08-08 15:40 ` Anthony Liguori
2013-08-08 15:45 ` Daniel P. Berrange
2013-08-08 16:07 ` Anthony Liguori
2013-08-08 16:14 ` Peter Maydell
2013-08-08 16:25 ` Anthony Liguori
2013-08-08 16:30 ` Peter Maydell
2013-08-09 2:58 ` Rusty Russell
2013-08-09 4:39 ` Anton Blanchard
2013-08-09 8:05 ` Peter Maydell
2013-08-09 14:16 ` Anthony Liguori
2013-08-08 15:48 ` Peter Maydell
2013-08-08 16:11 ` Anthony Liguori
2013-08-08 16:24 ` Andreas Färber
2013-08-09 7:35 ` Rusty Russell
2013-08-09 7:42 ` Peter Maydell
2013-08-12 7:49 ` Rusty Russell [this message]
2013-08-09 7:49 ` Benjamin Herrenschmidt
2013-08-12 0:28 ` Rusty Russell
2013-08-12 0:49 ` Benjamin Herrenschmidt
2013-08-09 15:15 ` Andreas Färber
2013-08-09 0:08 ` Rusty Russell
2013-08-09 7:00 ` Rusty Russell
2013-08-09 14:24 ` Andreas Färber
2013-08-09 6:40 ` Rusty Russell
2013-08-09 14:10 ` Anthony Liguori
2013-08-11 23:46 ` Rusty Russell
2013-08-08 5:15 ` [Qemu-devel] [PATCH 2/7] target-ppc: ppc64 targets can be either endian Rusty Russell
2013-08-08 5:15 ` [Qemu-devel] [PATCH 3/7] hw/net/virtio-net: use virtio wrappers to access headers Rusty Russell
2013-08-08 13:32 ` Anthony Liguori
2013-08-08 5:15 ` [Qemu-devel] [PATCH 4/7] hw/net/virtio-balloon: use virtio wrappers to access page frame numbers Rusty Russell
2013-08-08 13:32 ` Anthony Liguori
2013-08-08 5:15 ` [Qemu-devel] [PATCH 5/7] hw/block/virtio-blk: use virtio wrappers to access headers Rusty Russell
2013-08-08 9:57 ` Peter Maydell
2013-08-08 13:32 ` Anthony Liguori
2013-08-08 5:15 ` [Qemu-devel] [PATCH 6/7] hw/scsi/virtio-scsi: " Rusty Russell
2013-08-08 13:33 ` Anthony Liguori
2013-08-08 5:15 ` [Qemu-devel] [PATCH 7/7] hw/char/virtio-serial-bus: " Rusty Russell
2013-08-08 13:34 ` Anthony Liguori
2013-08-08 5:15 ` [Qemu-devel] [PATCH 7/7] patch virtio-serial-biendian.patch Rusty Russell
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