From: Joerg Roedel <joro@8bytes.org>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Subject: Re: [PATCH 00/13] Introduce IOMMU-API TLB Flushing Interface
Date: Thu, 17 Aug 2017 16:43:08 +0200 [thread overview]
Message-ID: <20170817144308.GI16908@8bytes.org> (raw)
In-Reply-To: <20170817083520.3329c0ff@w520.home>
Hi Alex,
On Thu, Aug 17, 2017 at 08:35:20AM -0600, Alex Williamson wrote:
> Wouldn't it be much more friendly to downstreams and out-of-tree
> drivers to introduce new functions for the async semantics? ie.
> iommu_map_async(), etc. The API also seems a little cleaner that
> iommu_map() stands alone, it's synchronous, iommu_map_async() is
> explicitly asynchronous and a _flush() call is needed to finalize it.
> What do you see as the advantage to the approach here? Thanks,
The reason I did it this way was that I want the iommu_map(),
iommu_unmap(), and iomu_map_sg() functions be considered the _default_
to chose when using the IOMMU-API, because their use is faster than
using the _sync() variants. Or in other words, I want the _sync function
names to imply that they are slower versions of the default ones.
Regards,
Joerg
next prev parent reply other threads:[~2017-08-17 14:43 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-17 12:56 [PATCH 00/13] Introduce IOMMU-API TLB Flushing Interface Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
[not found] ` <1502974596-23835-1-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-08-17 12:56 ` [PATCH 01/13] iommu/amd: Rename a few flush functions Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
2017-08-17 12:56 ` [PATCH 02/13] iommu: Introduce Interface for IOMMU TLB Flushing Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
[not found] ` <1502974596-23835-3-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-08-17 16:32 ` Will Deacon
2017-08-17 16:32 ` Will Deacon
[not found] ` <20170817163234.GB30719-5wv7dgnIgG8@public.gmane.org>
2017-08-17 16:50 ` Joerg Roedel
2017-08-17 16:50 ` Joerg Roedel
[not found] ` <20170817165040.GK2853-l3A5Bk7waGM@public.gmane.org>
2017-08-17 17:17 ` Will Deacon
2017-08-17 17:17 ` Will Deacon
2017-08-17 21:20 ` Joerg Roedel
[not found] ` <20170817212054.GL2853-l3A5Bk7waGM@public.gmane.org>
2017-08-18 15:16 ` Will Deacon
2017-08-18 15:16 ` Will Deacon
2017-08-17 12:56 ` [PATCH 03/13] vfio/type1: Use sychronized interface of the IOMMU-API Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
2017-08-17 12:56 ` [PATCH 04/13] iommu/dma: " Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
2017-08-17 12:56 ` [PATCH 05/13] arm: dma-mapping: " Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
2017-08-17 12:56 ` [PATCH 06/13] drm/etnaviv: " Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
[not found] ` <1502974596-23835-7-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-08-17 13:32 ` Lucas Stach
2017-08-17 13:32 ` Lucas Stach
[not found] ` <1502976758.19806.25.camel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2017-08-17 13:45 ` Joerg Roedel
2017-08-17 13:45 ` Joerg Roedel
2017-08-17 14:03 ` Lucas Stach
[not found] ` <1502978634.19806.27.camel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2017-08-17 14:18 ` Joerg Roedel
2017-08-17 14:18 ` Joerg Roedel
[not found] ` <20170817141858.GG16908-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-08-17 14:30 ` Lucas Stach
2017-08-17 14:30 ` Lucas Stach
2017-08-17 14:35 ` Joerg Roedel
2017-08-17 12:56 ` [PATCH 08/13] drm/nouveau/imem/gk20a: " Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
2017-08-17 12:56 ` [PATCH 10/13] drm/tegra: " Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
2017-08-17 13:28 ` Thierry Reding
2017-08-17 12:56 ` [PATCH 11/13] gpu: host1x: " Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
[not found] ` <1502974596-23835-12-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-08-17 13:29 ` Thierry Reding
2017-08-17 13:29 ` Thierry Reding
2017-08-17 14:35 ` [PATCH 00/13] Introduce IOMMU-API TLB Flushing Interface Alex Williamson
2017-08-17 14:35 ` Alex Williamson
2017-08-17 14:43 ` Joerg Roedel [this message]
[not found] ` <20170817144308.GI16908-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-08-17 14:54 ` Alex Williamson
2017-08-17 14:54 ` Alex Williamson
[not found] ` <20170817085407.3de4e755-DGNDKt5SQtizQB+pC5nmwQ@public.gmane.org>
2017-08-17 15:22 ` Joerg Roedel
2017-08-17 15:22 ` Joerg Roedel
[not found] ` <20170817152220.GK16908-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-08-23 12:09 ` Joerg Roedel
2017-08-23 12:09 ` Joerg Roedel
2017-08-17 12:56 ` [PATCH 07/13] drm/msm: Use sychronized interface of the IOMMU-API Joerg Roedel
2017-08-19 15:39 ` Rob Clark
2017-08-17 12:56 ` [PATCH 09/13] drm/rockchip: " Joerg Roedel
2017-08-17 12:56 ` Joerg Roedel
2017-08-17 12:56 ` [PATCH 12/13] IB/usnic: " Joerg Roedel
2017-08-17 12:56 ` [PATCH 13/13] remoteproc: " Joerg Roedel
2017-08-24 19:06 ` Bjorn Andersson
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