[PATCH] dma-buf: heaps: Set allocation limit for system heap

[Sumit Semwal]

Hi Hridya,

Apologies for the delay in responding.

On Wed, 4 Aug 2021 at 03:09, Hridya Valsaraju <hridya at google.com> wrote:

> On Mon, Aug 2, 2021 at 7:18 PM John Stultz <john.stultz at linaro.org> wrote:
> >
> > On Thu, Jul 22, 2021 at 12:07 PM Hridya Valsaraju <hridya at google.com>
> wrote:
> > > This patch limits the size of total memory that can be requested in a
> > > single allocation from the system heap. This would prevent a
> > > buggy/malicious client from depleting system memory by requesting for
> an
> > > extremely large allocation which might destabilize the system.
> > >
> > > The limit is set to half the size of the device's total RAM which is
> the
> > > same as what was set by the deprecated ION system heap.
> > >
> > > Signed-off-by: Hridya Valsaraju <hridya at google.com>
> >
> > Seems sane to me, unless folks have better suggestions for allocation
> limits.
> >
> > Reviewed-by: John Stultz <john.stultz at linaro.org>
>
> Thank you for taking a look John!
>
Looks good to me; I will apply it to drm-misc today.


>
> Regards,
> Hridya
>
> >
> > thanks
> > -john
>
Best,
Sumit.

-- 
Thanks and regards,

Sumit Semwal (he / him)
Tech Lead - LCG, Vertical Technologies
Linaro.org │ Open source software for ARM SoCs
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