From: pawel.moll@arm.com (Pawel Moll)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] virtio: mmio: access configuration space as little-endian
Date: Mon, 14 Oct 2013 09:44:44 +0100 [thread overview]
Message-ID: <1381740284.3247.4.camel@hornet> (raw)
In-Reply-To: <1381502171-8187-4-git-send-email-marc.zyngier@arm.com>
On Fri, 2013-10-11 at 15:36 +0100, Marc Zyngier wrote:
> virtio_mmio defines the config space to be little-endian.
This is not exactly true. The configuration *registers* (magic value,
queue selector etc.) are always LE, yes. The configuration *space* (the
free-form stuff starting at 0x100) is still guest-endian.
The spec-in-works makes everything LE and the driver will most likely
get accessors for the config space. Rusty had a go at this a while ago:
http://thread.gmane.org/gmane.linux.kernel.virtualization/19397
Pawe?
WARNING: multiple messages have this Message-ID (diff)
From: Pawel Moll <pawel.moll@arm.com>
To: Marc Zyngier <Marc.Zyngier@arm.com>
Cc: "linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [PATCH 3/3] virtio: mmio: access configuration space as little-endian
Date: Mon, 14 Oct 2013 09:44:44 +0100 [thread overview]
Message-ID: <1381740284.3247.4.camel@hornet> (raw)
In-Reply-To: <1381502171-8187-4-git-send-email-marc.zyngier@arm.com>
On Fri, 2013-10-11 at 15:36 +0100, Marc Zyngier wrote:
> virtio_mmio defines the config space to be little-endian.
This is not exactly true. The configuration *registers* (magic value,
queue selector etc.) are always LE, yes. The configuration *space* (the
free-form stuff starting at 0x100) is still guest-endian.
The spec-in-works makes everything LE and the driver will most likely
get accessors for the config space. Rusty had a go at this a while ago:
http://thread.gmane.org/gmane.linux.kernel.virtualization/19397
Paweł
next prev parent reply other threads:[~2013-10-14 8:44 UTC|newest]
Thread overview: 86+ 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 ` 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 ` Marc Zyngier
2013-10-11 14:36 ` [PATCH 2/3] virtio: mmio: fix signature checking for BE guests Marc Zyngier
2013-10-11 14:36 ` Marc Zyngier
2013-10-14 8:46 ` Pawel Moll
2013-10-14 8:46 ` Pawel Moll
2013-10-14 9:11 ` Rusty Russell
2013-10-14 9:11 ` Rusty Russell
2013-11-05 3:36 ` Rusty Russell
2013-11-05 3:36 ` Rusty Russell
2013-11-05 10:45 ` Pawel Moll
2013-11-05 10:45 ` Pawel Moll
2013-11-07 0:36 ` Rusty Russell
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
2013-10-11 14:36 ` Marc Zyngier
2013-10-14 8:44 ` Pawel Moll [this message]
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
2013-10-12 18:28 ` Michael S. Tsirkin
2013-10-14 8:24 ` Marc Zyngier
2013-10-14 8:24 ` Marc Zyngier
2013-10-14 8:59 ` Michael S. Tsirkin
2013-10-14 8:59 ` Michael S. Tsirkin
2013-10-14 9:04 ` Pawel Moll
2013-10-14 9:04 ` Pawel Moll
2013-10-14 10:46 ` Michael S. Tsirkin
2013-10-14 10:46 ` Michael S. Tsirkin
2013-10-14 10:50 ` Pawel Moll
2013-10-14 10:50 ` Pawel Moll
2013-10-14 23:02 ` Rusty Russell
2013-10-14 23:02 ` Rusty Russell
2013-10-14 9:13 ` Rusty Russell
2013-10-14 9:13 ` Rusty Russell
2013-10-14 8:21 ` Rusty Russell
2013-10-14 8:21 ` Rusty Russell
2013-10-14 12:36 ` Marc Zyngier
2013-10-14 12:36 ` Marc Zyngier
2013-10-14 12:51 ` Michael S. Tsirkin
2013-10-14 12:51 ` Michael S. Tsirkin
2013-10-17 0:27 ` Rusty Russell
2013-10-17 0:27 ` Rusty Russell
2013-10-14 13:03 ` Paolo Bonzini
2013-10-14 13:03 ` Paolo Bonzini
2013-10-14 13:10 ` Alexander Graf
2013-10-14 13:10 ` Alexander Graf
2013-10-14 13:13 ` Paolo Bonzini
2013-10-14 13:13 ` Paolo Bonzini
2013-10-14 13:24 ` Marc Zyngier
2013-10-14 13:24 ` Marc Zyngier
2013-10-14 13:29 ` Paolo Bonzini
2013-10-14 13:29 ` Paolo Bonzini
2013-10-14 13:39 ` Alexander Graf
2013-10-14 13:39 ` Alexander Graf
2013-10-14 13:49 ` Marc Zyngier
2013-10-14 13:49 ` Marc Zyngier
2013-10-14 14:05 ` Michael S. Tsirkin
2013-10-14 14:05 ` Michael S. Tsirkin
2013-10-14 14:13 ` Marc Zyngier
2013-10-14 14:13 ` Marc Zyngier
2013-10-14 14:16 ` Alexander Graf
2013-10-14 14:16 ` Alexander Graf
2013-10-14 14:52 ` Marc Zyngier
2013-10-14 14:52 ` Marc Zyngier
2013-10-14 14:56 ` Paolo Bonzini
2013-10-14 14:56 ` Paolo Bonzini
2013-10-14 15:12 ` Marc Zyngier
2013-10-14 15:12 ` Marc Zyngier
2013-10-14 15:22 ` Paolo Bonzini
2013-10-14 15:22 ` Paolo Bonzini
2013-10-14 15:36 ` Marc Zyngier
2013-10-14 15:36 ` Marc Zyngier
2013-10-14 16:50 ` Paolo Bonzini
2013-10-14 16:50 ` Paolo Bonzini
2013-10-14 17:10 ` Michael S. Tsirkin
2013-10-14 17:10 ` Michael S. Tsirkin
2013-10-14 23:23 ` Rusty Russell
2013-10-14 23:23 ` Rusty Russell
2013-10-15 6:38 ` Michael S. Tsirkin
2013-10-15 6:38 ` Michael S. Tsirkin
2013-10-15 9:19 ` Marc Zyngier
2013-10-15 9:19 ` Marc Zyngier
2013-10-14 15:45 ` Anup Patel
2013-10-14 15:45 ` Anup Patel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1381740284.3247.4.camel@hornet \
--to=pawel.moll@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.