Re: [Qemu-devel] [PATCH] nbd: avoid unaligned uint64_t store

[John Snow <jsnow@redhat.com>]

On 02/04/2016 05:27 AM, Paolo Bonzini wrote:
> 
> 
> On 04/02/2016 00:48, John Snow wrote:
>> cpu_to_be64w can't be used to make unaligned stores, but stq_be_p can.
>> The other stores in this routine are left alone, they're aligned already.
>>
>> Signed-off-by: John Snow <jsnow@redhat.com>
>> ---
>>  nbd/server.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/nbd/server.c b/nbd/server.c
>> index 1ec79cf..5b65059 100644
>> --- a/nbd/server.c
>> +++ b/nbd/server.c
>> @@ -441,7 +441,7 @@ static coroutine_fn int nbd_negotiate(NBDClientNewData *data)
>>          }
>>  
>>          assert ((client->exp->nbdflags & ~65535) == 0);
>> -        cpu_to_be64w((uint64_t*)(buf + 18), client->exp->size);
>> +        stq_be_p((uint64_t *)(buf + 18), client->exp->size);
>>          cpu_to_be16w((uint16_t*)(buf + 26), client->exp->nbdflags | myflags);
>>          if (nbd_negotiate_write(csock, buf + 18,
>>                                  sizeof(buf) - 18) != sizeof(buf) - 18) {
>>
> 
> Let's change all of them.  But no need to send another patch.
> 
> Paolo
> 

Does that mean that you're going to re-write the patch?