Re: [PATCH v2 10/11] arm64: edit zone_dma_bits to fine tune dma-direct min mask
From: Petr Tesarik <hidden>
Date: 2019-08-27 07:03:48
Also in:
linux-arch, linux-arm-kernel, linux-iommu, linux-mm, linux-riscv, lkml
On Mon, 26 Aug 2019 13:08:50 +0200 Nicolas Saenz Julienne [off-list ref] wrote:
On Mon, 2019-08-26 at 09:06 +0200, Christoph Hellwig wrote:quoted
On Tue, Aug 20, 2019 at 04:58:18PM +0200, Nicolas Saenz Julienne wrote:quoted
- if (IS_ENABLED(CONFIG_ZONE_DMA)) + if (IS_ENABLED(CONFIG_ZONE_DMA)) { arm64_dma_phys_limit = max_zone_dma_phys(); + zone_dma_bits = ilog2((arm64_dma_phys_limit - 1) & GENMASK_ULL(31, 0)) + 1;Hi Christoph, thanks for the rewiews.quoted
This adds a way too long line.I know, I couldn't find a way to split the operation without making it even harder to read. I'll find a solution.
If all else fails, move the code to an inline function and call it e.g. phys_limit_to_dma_bits(). Just my two cents, Petr T
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