From: Christoph Hellwig <hch@infradead.org>
To: Yong Wu <yong.wu@mediatek.com>
Cc: youlin.pei@mediatek.com, anan.sun@mediatek.com,
Nicolas Boichat <drinkcat@chromium.org>,
srv_heupstream@mediatek.com, Tomasz Figa <tfiga@google.com>,
Will Deacon <will@kernel.org>,
linux-kernel@vger.kernel.org,
Krzysztof Kozlowski <krzk@kernel.org>,
chao.hao@mediatek.com, iommu@lists.linux-foundation.org,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
kernel-team@android.com, Greg Kroah-Hartman <gregkh@google.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 1/7] iommu: Move iotlb_sync_map out from __iommu_map
Date: Wed, 23 Dec 2020 08:51:53 +0000 [thread overview]
Message-ID: <20201223085153.GA30643@infradead.org> (raw)
In-Reply-To: <20201216103607.23050-2-yong.wu@mediatek.com>
On Wed, Dec 16, 2020 at 06:36:01PM +0800, Yong Wu wrote:
> In the end of __iommu_map, It alway call iotlb_sync_map.
> This patch moves iotlb_sync_map out from __iommu_map since it is
> unnecessary to call this for each sg segment especially iotlb_sync_map
> is flush tlb all currently.
>
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>
> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
What about adding a little helper that does the NULL check and method
call instead of duplicating it all over?
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next prev parent reply other threads:[~2020-12-23 8:52 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-16 10:36 [PATCH v3 0/7] MediaTek IOMMU improve tlb flush performance in map/unmap Yong Wu
2020-12-16 10:36 ` [PATCH v3 1/7] iommu: Move iotlb_sync_map out from __iommu_map Yong Wu
2020-12-23 8:51 ` Christoph Hellwig [this message]
2020-12-24 11:27 ` Yong Wu
2020-12-16 10:36 ` [PATCH v3 2/7] iommu: Add iova and size as parameters in iotlb_sync_map Yong Wu
2020-12-16 10:36 ` [PATCH v3 3/7] iommu/mediatek: Add iotlb_sync_map to sync whole the iova range Yong Wu
2020-12-16 10:36 ` [PATCH v3 4/7] iommu: Switch gather->end to unsigned long long Yong Wu
2020-12-16 11:03 ` David Laight
2020-12-17 2:26 ` Yong Wu
2020-12-16 12:10 ` Robin Murphy
2020-12-17 2:26 ` Yong Wu
2020-12-16 10:36 ` [PATCH v3 5/7] iommu: Allow io_pgtable_tlb ops optional Yong Wu
2021-01-18 16:18 ` Robin Murphy
2020-12-16 10:36 ` [PATCH v3 6/7] iommu/mediatek: Gather iova in iommu_unmap to achieve tlb sync once Yong Wu
2020-12-23 8:56 ` Tomasz Figa
2020-12-23 11:00 ` Robin Murphy
2021-01-08 9:56 ` Tomasz Figa
2021-01-08 9:56 ` Tomasz Figa
2021-01-18 16:35 ` Robin Murphy
2021-01-18 16:58 ` Will Deacon
2021-01-18 17:14 ` Robin Murphy
2020-12-16 10:36 ` [PATCH v3 7/7] iommu/mediatek: Remove the tlb-ops for v7s Yong Wu
2021-01-18 16:39 ` Robin Murphy
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