Re: [Qemu-devel] [PATCH v6 2/8] virtio: allow byte swapping for vring and config access

["Andreas Färber" <afaerber@suse.de>]

Am 31.03.2014 18:24, schrieb Alexander Graf:
> On 03/28/2014 11:57 AM, Greg Kurz wrote:
>> From: Rusty Russell <rusty@rustcorp.com.au>
>>
>> This is based on a simpler patch by Anthony Liguouri, which only handled
>> the vring accesses.  We also need some drivers to access these helpers,
>> eg. for data which contains headers.
>>
>> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
>> [ ldq_phys() API change,
>>    use per-device needs_byteswap flag,
>>    Greg Kurz <gkurz@linux.vnet.ibm.com> ]
>> Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
>> ---
>>   hw/virtio/virtio.c |   93
>> ++++++++++++++++++++++++++++++----------------------
>>   1 file changed, 53 insertions(+), 40 deletions(-)
>>
>> diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
>> index 24b565f..1877b46 100644
>> --- a/hw/virtio/virtio.c
>> +++ b/hw/virtio/virtio.c
>> @@ -102,53 +102,57 @@ static void virtqueue_init(VirtQueue *vq)
>>                                    vq->vring.align);
>>   }
>>   -static inline uint64_t vring_desc_addr(hwaddr desc_pa, int i)
>> +static inline uint64_t vring_desc_addr(hwaddr desc_pa, int i,
>> +                                       struct VirtIODevice *vdev)
> 
> The logical ordering for helper is usually to have the device as the
> first parameter (it's basically the self object). Could you please order
> it accordingly?

Also please note that QEMU Coding Style requests the use of typedefs,
i.e. drop the "struct".

Regards,
Andreas


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