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Date: Tue, 10 Aug 2021 13:56:19 +0530 From: Sumit Semwal <sumit.semwal@...aro.org> To: Hridya Valsaraju <hridya@...gle.com> Cc: John Stultz <john.stultz@...aro.org>, Liam Mark <lmark@...eaurora.org>, Laura Abbott <labbott@...hat.com>, Brian Starkey <Brian.Starkey@....com>, Christian König <christian.koenig@....com>, linux-media <linux-media@...r.kernel.org>, dri-devel <dri-devel@...ts.freedesktop.org>, "moderated list:DMA BUFFER SHARING FRAMEWORK" <linaro-mm-sig@...ts.linaro.org>, lkml <linux-kernel@...r.kernel.org>, Android Kernel Team <kernel-team@...roid.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: Re: [PATCH] dma-buf: heaps: Set allocation limit for system heap Hi Hridya, Apologies for the delay in responding; On Wed, 4 Aug 2021 at 03:09, Hridya Valsaraju <hridya@...gle.com> wrote: > > On Mon, Aug 2, 2021 at 7:18 PM John Stultz <john.stultz@...aro.org> wrote: > > > > On Thu, Jul 22, 2021 at 12:07 PM Hridya Valsaraju <hridya@...gle.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@...gle.com> > > > > Seems sane to me, unless folks have better suggestions for allocation limits. > > > > Reviewed-by: John Stultz <john.stultz@...aro.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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