From: Christoph Hellwig <hch@lst.de> To: Barry Song <song.bao.hua@hisilicon.com> Cc: iommu@lists.linux-foundation.org, hch@lst.de, robin.murphy@arm.com, m.szyprowski@samsung.com, linuxarm@huawei.com, linux-kselftest@vger.kernel.org, xuwei5@huawei.com, Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>, Shuah Khan <shuah@kernel.org> Subject: Re: [PATCH v3 1/2] dma-mapping: add benchmark support for streaming DMA APIs Date: Sat, 14 Nov 2020 17:53:36 +0100 [thread overview] Message-ID: <20201114165336.GA24844@lst.de> (raw) In-Reply-To: <20201102080646.2180-2-song.bao.hua@hisilicon.com> Lots of > 80 char lines. Please fix up the style. I think this needs to set a dma mask as behavior for unlimited dma mask vs the default 32-bit one can be very different. I also think you need to be able to pass the direction or have different tests for directions. bidirectional is not exactly heavily used and pays more cache management penality.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de> To: Barry Song <song.bao.hua@hisilicon.com> Cc: Shuah Khan <shuah@kernel.org>, xuwei5@huawei.com, Will Deacon <will@kernel.org>, linuxarm@huawei.com, iommu@lists.linux-foundation.org, linux-kselftest@vger.kernel.org, robin.murphy@arm.com, hch@lst.de Subject: Re: [PATCH v3 1/2] dma-mapping: add benchmark support for streaming DMA APIs Date: Sat, 14 Nov 2020 17:53:36 +0100 [thread overview] Message-ID: <20201114165336.GA24844@lst.de> (raw) In-Reply-To: <20201102080646.2180-2-song.bao.hua@hisilicon.com> Lots of > 80 char lines. Please fix up the style. I think this needs to set a dma mask as behavior for unlimited dma mask vs the default 32-bit one can be very different. I also think you need to be able to pass the direction or have different tests for directions. bidirectional is not exactly heavily used and pays more cache management penality. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2020-11-14 16:54 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-02 8:06 [PATCH v3 0/2] dma-mapping: provide a benchmark for streaming DMA mapping Barry Song 2020-11-02 8:06 ` Barry Song 2020-11-02 8:06 ` [PATCH v3 1/2] dma-mapping: add benchmark support for streaming DMA APIs Barry Song 2020-11-02 8:06 ` Barry Song 2020-11-02 9:18 ` John Garry 2020-11-02 9:18 ` John Garry 2020-11-02 9:37 ` Song Bao Hua (Barry Song) 2020-11-02 9:37 ` Song Bao Hua (Barry Song) 2020-11-10 8:10 ` Song Bao Hua (Barry Song) 2020-11-10 8:10 ` Song Bao Hua (Barry Song) 2020-11-10 8:38 ` John Garry 2020-11-10 8:38 ` John Garry 2020-11-11 1:29 ` Song Bao Hua (Barry Song) 2020-11-11 1:29 ` Song Bao Hua (Barry Song) [not found] ` <51f0c148-e2e3-e084-4021-ec5883919436@huawei.com> 2020-11-11 9:42 ` Song Bao Hua (Barry Song) 2020-11-11 9:42 ` Song Bao Hua (Barry Song) 2020-11-14 16:53 ` Christoph Hellwig [this message] 2020-11-14 16:53 ` Christoph Hellwig 2020-11-15 0:11 ` Song Bao Hua (Barry Song) 2020-11-15 0:11 ` Song Bao Hua (Barry Song) 2020-11-15 8:45 ` Christoph Hellwig 2020-11-15 8:45 ` Christoph Hellwig 2020-11-15 21:54 ` Song Bao Hua (Barry Song) 2020-11-15 21:54 ` Song Bao Hua (Barry Song) 2020-11-02 8:06 ` [PATCH v3 2/2] selftests/dma: add test application for DMA_MAP_BENCHMARK Barry Song 2020-11-02 8:06 ` Barry Song
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