lkml.org 
[lkml]   [2015]   [Oct]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/3] virtio_net: Stop doing DMA from the stack
On Tue, Oct 27, 2015 at 06:17:08PM -0700, Andy Lutomirski wrote:
> From: Andy Lutomirski <luto@amacapital.net>
>
> 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@kernel.org>
> ---
> drivers/net/virtio_net.c | 53 ++++++++++++++++++++++++++++++++----------------
> 1 file changed, 36 insertions(+), 17 deletions(-)

Reviewed-by: Joerg Roedel <jroedel@suse.de>


\
 
 \ /
  Last update: 2015-10-28 03:21    [W:0.060 / U:0.620 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site