Re: [PATCH 1/3] virtio_net: Stop doing DMA from the stack

[Andy Lutomirski]

On Tue, Oct 27, 2015 at 7:07 PM, Joerg Roedel <jroedel@xxxxxxx> wrote:
> On Tue, Oct 27, 2015 at 06:17:08PM -0700, Andy Lutomirski wrote:
>> From: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
>>
>> Once virtio starts using the DMA API, we won't be able to safely DMA
>> from the stack.  virtio-net does a couple of config DMA requests
>> from small stack buffers -- switch to using dynamically-allocated
>> memory.
>>
>> This should have no effect on any performance-critical code paths.
>>
>> Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
>> ---
>>  drivers/net/virtio_net.c | 53 ++++++++++++++++++++++++++++++++----------------
>>  1 file changed, 36 insertions(+), 17 deletions(-)
>
> Reviewed-by: Joerg Roedel <jroedel@xxxxxxx>

Should I just send this to netdev now for 4.4?  We could get this one
out of the way, maybe.

--Andy

-- 
Andy Lutomirski
AMA Capital Management, LLC
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