amit.pundir at linaro.org
Tue Jul 28 08:25:30 EDT 2020
On Tue, 28 Jul 2020 at 17:37, Christoph Hellwig <hch at lst.de> wrote:
> On Tue, Jul 28, 2020 at 05:32:56PM +0530, Amit Pundir wrote:
> > > can you try these two patches? The first one makes sure we don't apply
> > > physical address based checks for IOMMU allocations, and the second one
> > > is a slightly tweaked version of the patch from Nicolas to allow dipping
> > > into the CMA areas for allocations to expand the atomic pools.
> > Sorry, verified a couple of times but these two patches are not working
> > for me. I'm stuck at the bootloader splash screen on my phone.
> Thanks for testing. The only intended functional change compared to
> Fridays patch was the issue Nicolas pointed out. Can you try this hack
> on top?
Yes, that worked.
> diff --git a/kernel/dma/pool.c b/kernel/dma/pool.c
> index 83fda10394937b..88e40a022b6bfd 100644
> --- a/kernel/dma/pool.c
> +++ b/kernel/dma/pool.c
> @@ -70,13 +70,14 @@ static bool cma_in_zone(gfp_t gfp)
> size = cma_get_size(cma);
> if (!size)
> return false;
> +#if 0
> /* CMA can't cross zone boundaries, see cma_activate_area() */
> end = cma_get_base(cma) - memblock_start_of_DRAM() + size - 1;
> if (IS_ENABLED(CONFIG_ZONE_DMA) && (gfp & GFP_DMA))
> return end <= DMA_BIT_MASK(zone_dma_bits);
> if (IS_ENABLED(CONFIG_ZONE_DMA32) && (gfp & GFP_DMA32))
> return end <= DMA_BIT_MASK(32);
> return true;
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