linux-kernel - Re: [PULL] virtio/vhost: cross endian support

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Message-ID: <CA+55aFwE+vO2xevQ5jpyC0uJ7gASDwMS4=aDb=78RsJNA-wN1Q@mail.gmail.com>
Date:	Wed, 1 Jul 2015 12:02:50 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	KVM list <kvm@...r.kernel.org>,
	virtualization <virtualization@...ts.linux-foundation.org>,
	Network Development <netdev@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Cornelia Huck <cornelia.huck@...ibm.com>,
	gkurz@...ux.vnet.ibm.com, kraxel@...hat.com
Subject: Re: [PULL] virtio/vhost: cross endian support

On Wed, Jul 1, 2015 at 2:31 AM, Michael S. Tsirkin <mst@...hat.com> wrote:
> virtio/vhost: cross endian support

Ugh. Does this really have to be dynamic?

Can't virtio do the sane thing, and just use a _fixed_ endianness?

Doing a unconditional byte swap is faster and simpler than the crazy
conditionals. That's true regardless of endianness, but gets to be
even more so if the fixed endianness is little-endian, since BE is
not-so-slowly fading from the world.

               Linus
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