Re: [PATCH bpf-next] xsk: support allocations of large umems

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On Wed, Jan 15, 2020 at 11:10 AM Jonathan Lemon
<jonathan.lemon@xxxxxxxxx> wrote:
>
>
>
> On 14 Jan 2020, at 1:49, Magnus Karlsson wrote:
>
> > When registering a umem area that is sufficiently large (>1G on an
> > x86), kmalloc cannot be used to allocate one of the internal data
> > structures, as the size requested gets too large. Use kvmalloc instead
> > that falls back on vmalloc if the allocation is too large for kmalloc.
> >
> > Also add accounting for this structure as it is triggered by a user
> > space action (the XDP_UMEM_REG setsockopt) and it is by far the
> > largest structure of kernel allocated memory in xsk.
> >
> > Signed-off-by: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>
> > Reported-by: Ryan Goodfellow <rgoodfel@xxxxxxx>
>
> Acked-by: Jonathan Lemon <jonathan.lemon@xxxxxxxxx>

Applied. Thanks



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