From: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Dmitry Osipenko <digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Jonathan Hunter
<jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
Subject: Re: [PATCH v4 18/20] iommu/tegra: gart: Don't detach devices from inactive domains
Date: Mon, 24 Sep 2018 13:00:47 +0200 [thread overview]
Message-ID: <20180924110047.GO21032@ulmo> (raw)
In-Reply-To: <20180924004153.8232-19-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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On Mon, Sep 24, 2018 at 03:41:51AM +0300, Dmitry Osipenko wrote:
> There could be unlimited number of allocated domains, but only one domain
> can be active at a time. Hence devices must be detached only from the
> active domain.
>
> Signed-off-by: Dmitry Osipenko <digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
> drivers/iommu/tegra-gart.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
Do we have a mechanism of switching out different domains? I don't think
we do, so I'm wondering if perhaps a better solution to this would be to
just refuse to create more than one domain in the first place. That
would also allow us to get rid of the global variable gart_handle.
Thierry
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next prev parent reply other threads:[~2018-09-24 11:00 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-24 0:41 [PATCH v4 00/20] IOMMU: Tegra GART driver clean up and optimization Dmitry Osipenko
[not found] ` <20180924004153.8232-1-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 0:41 ` [PATCH v4 01/20] iommu/tegra: gart: Remove pr_fmt and clean up includes Dmitry Osipenko
[not found] ` <20180924004153.8232-2-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 10:02 ` Thierry Reding
2018-09-24 0:41 ` [PATCH v4 02/20] iommu/tegra: gart: Clean up driver probe errors handling Dmitry Osipenko
[not found] ` <20180924004153.8232-3-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 10:02 ` Thierry Reding
2018-09-24 0:41 ` [PATCH v4 03/20] iommu/tegra: gart: Ignore devices without IOMMU phandle in DT Dmitry Osipenko
2018-09-24 10:05 ` Thierry Reding
2018-09-24 18:41 ` Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 04/20] iommu: Introduce iotlb_sync_map callback Dmitry Osipenko
2018-09-24 10:06 ` Thierry Reding
2018-09-24 0:41 ` [PATCH v4 05/20] iommu/tegra: gart: Optimize mapping / unmapping performance Dmitry Osipenko
[not found] ` <20180924004153.8232-6-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 10:07 ` Thierry Reding
2018-09-24 0:41 ` [PATCH v4 06/20] dt-bindings: memory: tegra: Squash tegra20-gart into tegra20-mc Dmitry Osipenko
[not found] ` <20180924004153.8232-7-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 9:55 ` Thierry Reding
2018-09-27 18:41 ` Rob Herring
2018-09-27 18:41 ` Rob Herring
2018-09-24 0:41 ` [PATCH v4 08/20] memory: tegra: Don't invoke Tegra30+ specific memory timing setup on Tegra20 Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 09/20] memory: tegra: Adapt to Tegra20 device-tree binding changes Dmitry Osipenko
[not found] ` <20180924004153.8232-10-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 10:02 ` Thierry Reding
2018-09-24 13:22 ` Dmitry Osipenko
2018-09-25 12:16 ` Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 10/20] memory: tegra: Read client ID on GART page fault Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 11/20] memory: tegra: Use of_device_get_match_data() Dmitry Osipenko
2018-09-24 10:13 ` Thierry Reding
2018-09-24 18:39 ` Dmitry Osipenko
2018-09-25 10:00 ` Thierry Reding
2018-09-25 13:53 ` Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 12/20] iommu/tegra: gart: Integrate with Memory Controller driver Dmitry Osipenko
[not found] ` <20180924004153.8232-13-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 10:23 ` Thierry Reding
2018-09-24 18:22 ` Dmitry Osipenko
2018-09-25 10:02 ` Thierry Reding
2018-09-24 0:41 ` [PATCH v4 14/20] iommu/tegra: gart: Fix NULL pointer dereference Dmitry Osipenko
2018-09-24 10:49 ` Thierry Reding
2018-09-24 0:41 ` [PATCH v4 16/20] iommu/tegra: gart: Don't use managed resources Dmitry Osipenko
2018-09-24 10:52 ` Thierry Reding
2018-09-24 18:57 ` Dmitry Osipenko
[not found] ` <a9e2943b-1139-8838-5440-bd6cf55e9a55-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-25 10:03 ` Thierry Reding
2018-09-25 13:41 ` Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 17/20] iommu/tegra: gart: Prepend error/debug messages with "GART:" Dmitry Osipenko
[not found] ` <20180924004153.8232-18-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 10:57 ` Thierry Reding
2018-09-24 18:09 ` Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 18/20] iommu/tegra: gart: Don't detach devices from inactive domains Dmitry Osipenko
[not found] ` <20180924004153.8232-19-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 11:00 ` Thierry Reding [this message]
2018-09-24 18:05 ` Dmitry Osipenko
[not found] ` <8be80297-3b13-ece6-a5bf-873cc7877989-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-25 10:04 ` Thierry Reding
2018-09-25 13:41 ` Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 07/20] ARM: dts: tegra20: Update Memory Controller node to the new binding Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 13/20] iommu/tegra: gart: Fix spinlock recursion Dmitry Osipenko
2018-09-24 10:49 ` Thierry Reding
2018-09-24 0:41 ` [PATCH v4 15/20] iommu/tegra: gart: Allow only one active domain at a time Dmitry Osipenko
[not found] ` <20180924004153.8232-16-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 10:50 ` Thierry Reding
2018-09-24 0:41 ` [PATCH v4 19/20] iommu/tegra: gart: Simplify clients-tracking code Dmitry Osipenko
[not found] ` <20180924004153.8232-20-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 11:10 ` Thierry Reding
2018-09-24 17:50 ` Dmitry Osipenko
[not found] ` <aefb6b78-4923-0259-0f3a-2ce3b95ca456-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-25 10:09 ` Thierry Reding
2018-09-25 13:47 ` Dmitry Osipenko
2018-09-24 0:41 ` [PATCH v4 20/20] iommu/tegra: gart: Perform code refactoring Dmitry Osipenko
[not found] ` <20180924004153.8232-21-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-09-24 11:34 ` Thierry Reding
2018-09-24 17:11 ` Dmitry Osipenko
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