From: Gavin Li <gavinli@thegavinli.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Shawn Anastasio <shawn@anastas.io>,
Michael Ellerman <mpe@ellerman.id.au>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Paul Burton <paul.burton@mips.com>,
James Hogan <jhogan@kernel.org>,
linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Gavin Li <git@thegavinli.com>
Subject: Re: [PATCH 1/2] dma-mapping: fix page attributes for dma_mmap_*
Date: Mon, 5 Aug 2019 19:55:44 -0700 [thread overview]
Message-ID: <CA+GxvY5C_rrukCzC5K-h72bePyW8PS_Rfj3uxh-K6UrcAextUQ@mail.gmail.com> (raw)
In-Reply-To: <CAP_+7SzPdNCMKuuXMjHjpCzxsey2YWR_e6mTAWtNSZ6kKBvKFw@mail.gmail.com>
> /* create a coherent mapping */
> ret = dma_common_contiguous_remap(page, size, VM_USERMAP,
> - arch_dma_mmap_pgprot(dev, PAGE_KERNEL, attrs),
> + dma_pgprot(dev, PAGE_KERNEL, attrs),
> __builtin_return_address(0));
> if (!ret) {
> __dma_direct_free_pages(dev, size, page);
Is dma_common_contiguous_remap() still necessary in the
DMA_ATTR_NON_CONSISTENT case? I would presume it would be fine to just
return a linearly mapped address in that case.
next prev parent reply other threads:[~2019-08-06 2:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-05 8:01 fix default dma_mmap_* pgprot v2 Christoph Hellwig
2019-08-05 8:01 ` [PATCH 1/2] dma-mapping: fix page attributes for dma_mmap_* Christoph Hellwig
2019-08-05 9:10 ` Catalin Marinas
[not found] ` <CAP_+7SzPdNCMKuuXMjHjpCzxsey2YWR_e6mTAWtNSZ6kKBvKFw@mail.gmail.com>
2019-08-06 2:55 ` Gavin Li [this message]
2019-08-06 5:12 ` Christoph Hellwig
2019-08-06 19:39 ` Shawn Anastasio
2019-08-07 6:04 ` Christoph Hellwig
2019-08-07 11:45 ` Shawn Anastasio
2019-08-05 8:01 ` [PATCH 2/2] MIPS: remove support for DMA_ATTR_WRITE_COMBINE Christoph Hellwig
2019-08-05 8:06 ` Sergei Shtylyov
2019-08-07 6:16 fix default dma_mmap_* pgprot v3 Christoph Hellwig
2019-08-07 6:16 ` [PATCH 1/2] dma-mapping: fix page attributes for dma_mmap_* Christoph Hellwig
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