From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: Mikko Perttunen <cyndis@kapsi.fi>,
linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1] gpu: host1x: Skip IOMMU initialization if firewall is enabled
Date: Sat, 07 Jul 2018 14:07:01 +0300 [thread overview]
Message-ID: <1530965.U9eOrqsrov@dimapc> (raw)
In-Reply-To: <20180519010710.11693-1-digetx@gmail.com>
On Saturday, 19 May 2018 04:07:10 MSK Dmitry Osipenko wrote:
> Host1x's CDMA can't access the command buffers if IOMMU and Host1x
> firewall are enabled in the kernels config because firewall doesn't map
> the copied buffer into IOVA space. Fix this by skipping IOMMU
> initialization if firewall is enabled as firewall merges sparse cmdbufs
> into a single contiguous buffer and hence IOMMU isn't needed in this case.
>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Thierry, please consider applying this patch.
next prev parent reply other threads:[~2018-07-07 11:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-19 1:07 [PATCH v1] gpu: host1x: Skip IOMMU initialization if firewall is enabled Dmitry Osipenko
2018-07-07 11:07 ` Dmitry Osipenko [this message]
2018-07-09 8:32 ` Thierry Reding
2018-07-09 8:32 ` Thierry Reding
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