Re: [RFC PATCH] virtio: change config to guest endian.

[Anthony Liguori <anthony@codemonkey.ws>]

Hollis Blanchard wrote:
> On Tuesday 22 April 2008 16:05:38 Rusty Russell wrote:
>   
>> On Wednesday 23 April 2008 06:29:14 Hollis Blanchard wrote:
>>     
>>> On Tuesday 22 April 2008 09:31:35 Rusty Russell wrote:
>>>       
>>>> We may still regret not doing *everything* little-endian, but this
>>>> doesn't make it worse.
>>>>         
>>> Hmm, why *don't* we just do everything LE, including the ring?
>>>       
>> Mainly because when requirements are in doubt, simplicity wins, I think.
>>     
>
> Well, I think the definition of simplicity is up for debate in this 
> case... "LE everywhere" is much simpler than "it depends", IMHO.
>   

You couldn't use the vringfd direct ring mapping optimization in KVM for 
PPC without teaching the kernel to access a vring in LE format.  I'm 
pretty sure the later would get rejected on LKML anyway for vringfd as a 
generic mechanism.

Regards,

Anthony Liguori


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