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SubjectRe: [PATCH] net: don't use kvzalloc for DMA memory
On Wed, Apr 18, 2018 at 01:47:21PM -0400, David Miller wrote:
> From: Eric Dumazet <eric.dumazet@gmail.com>
> Date: Wed, 18 Apr 2018 09:51:25 -0700
>
> > I suggest that virtio_net clearly identifies which part needs a specific allocation
> > and does its itself, instead of abusing the netdev_priv storage.
> >
> > Ie use a pointer to a block of memory, allocated by virtio_net, for virtio_net.
>
> +1

I can do this, but just FYI it's all of 16 bytes which is only mapped
for DMA temporarily - and not all of it - a byte here, a byte there.
The amount of hoops one has to jump through just to get 1 byte from
device nowdays is annoying.

--
MST

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