# Re: \[PATCH v6 6/8\] virtio: add explicit big-endian support to memory accessors

- From: David Gibson \<hidden\>
- Date: 2015-05-28 05:26:22 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2015/05/4503793
- Thread: https://ratatoskr.run/kvm/2015/04/4478259/t.md

```text
On Fri, Apr 24, 2015 at 02:26:24PM +0200, Greg Kurz wrote:
> The current memory accessors logic is:
> - little endian if little_endian
> - native endian (i.e. no byteswap) if !little_endian
> 
> If we want to fully support cross-endian vhost, we also need to be
> able to convert to big endian.
> 
> Instead of changing the little_endian argument to some 3-value enum, this
> patch changes the logic to:
> - little endian if little_endian
> - big endian if !little_endian
> 
> The native endian case is handled by all users with a trivial helper. This
> patch doesn't change any functionality, nor it does add overhead.
> 
> Signed-off-by: Greg Kurz <redacted>

Reviewed-by: David Gibson <redacted>

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson
```