From: Thierry Reding <thierry.reding@gmail.com>
To: Dmitry Osipenko <digetx@gmail.com>
Cc: linux-tegra@vger.kernel.org, Mikko Perttunen <cyndis@kapsi.fi>,
dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v1] drm/tegra: Detach devices from IOMMU DMA domain on arm32
Date: Wed, 26 Sep 2018 17:24:25 +0200 [thread overview]
Message-ID: <20180926152425.GK12980@ulmo> (raw)
In-Reply-To: <20180819142421.22567-1-digetx@gmail.com>
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On Sun, Aug 19, 2018 at 05:24:20PM +0300, Dmitry Osipenko wrote:
> All Tegra DRM devices are getting attached to an implicit IOMMU DMA
> domain if CONFIG_ARM_DMA_USE_IOMMU=y. Since Tegra DRM driver manages IOMMU
> by itself, the devices must be detached from the implicit domain using
> arch-specific IOMMU-API. Note that this works only for arm32 and not for
> arm64, which will remain broken if CONFIG_IOMMU_DMA is enabled.
>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
> drivers/gpu/drm/tegra/drm.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
Applied, thanks.
Thierry
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prev parent reply other threads:[~2018-09-26 15:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-19 14:24 [PATCH v1] drm/tegra: Detach devices from IOMMU DMA domain on arm32 Dmitry Osipenko
2018-08-19 14:24 ` [PATCH v1] gpu: host1x: Detach Host1x " Dmitry Osipenko
2018-08-20 17:35 ` kbuild test robot
2018-09-26 15:24 ` Thierry Reding [this message]
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