From: Joerg Roedel <joro@8bytes.org>
To: freedreno@lists.freedesktop.org, jean-philippe.brucker@arm.com,
linux-arm-msm@vger.kernel.org, dianders@chromium.org,
hoegsberg@google.com, baolu.lu@linux.intel.com,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v1 04/15] iommu: Add DOMAIN_ATTR_PTBASE
Date: Fri, 26 Apr 2019 16:13:41 +0200 [thread overview]
Message-ID: <20190426141341.GB6731@8bytes.org> (raw)
In-Reply-To: <20190318141912.GA10168@jcrouse1-lnx.qualcomm.com>
Hi Jordan,
On Mon, Mar 18, 2019 at 08:19:12AM -0600, Jordan Crouse wrote:
> Adreno GPUs can an internal mechanism to switch the pagetable address in the
> attached arm-smmu v2 IOMMU so that each individual rendering process can have
> their own pagetable. The driver uses iommu_map and iommu_unmap to write
> the pagetable but the address for each individual pagetable needs to be queried
> so it can be sent to the hardware. You can see the driver specific code that
> does this here:
Okay, thanks for the explanation. I still don't like it, but it is
probably better putting gpu-specfic context-switch logic into the iommu
driver, so I guess this is okay.
Regards,
Joerg
WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: freedreno@lists.freedesktop.org, jean-philippe.brucker@arm.com,
linux-arm-msm@vger.kernel.org, dianders@chromium.org,
hoegsberg@google.com, baolu.lu@linux.intel.com,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v1 04/15] iommu: Add DOMAIN_ATTR_PTBASE
Date: Fri, 26 Apr 2019 16:13:41 +0200 [thread overview]
Message-ID: <20190426141341.GB6731@8bytes.org> (raw)
Message-ID: <20190426141341.MRh34_4jgmBjf315QneIczIraQxtbJUU-s_l2aYm6iA@z> (raw)
In-Reply-To: <20190318141912.GA10168@jcrouse1-lnx.qualcomm.com>
Hi Jordan,
On Mon, Mar 18, 2019 at 08:19:12AM -0600, Jordan Crouse wrote:
> Adreno GPUs can an internal mechanism to switch the pagetable address in the
> attached arm-smmu v2 IOMMU so that each individual rendering process can have
> their own pagetable. The driver uses iommu_map and iommu_unmap to write
> the pagetable but the address for each individual pagetable needs to be queried
> so it can be sent to the hardware. You can see the driver specific code that
> does this here:
Okay, thanks for the explanation. I still don't like it, but it is
probably better putting gpu-specfic context-switch logic into the iommu
driver, so I guess this is okay.
Regards,
Joerg
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2019-04-26 14:13 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-01 19:38 [RFC PATCH v1 00/15] drm/msm: Per-instance pagetable support Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
[not found] ` <1551469117-3404-1-git-send-email-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2019-03-01 19:38 ` [RFC PATCH v1 01/15] iommu: Add DOMAIN_ATTR_SPLIT_TABLES Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 02/15] iommu/arm-smmu: Add split pagetable support for arm-smmu-v2 Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
[not found] ` <1551469117-3404-3-git-send-email-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2019-03-01 20:25 ` Rob Clark
2019-03-01 20:25 ` [Freedreno] " Rob Clark
2019-03-01 20:25 ` Rob Clark
2019-03-01 19:38 ` [RFC PATCH v1 03/15] iommu/io-pgtable: Allow TLB operations to be optional Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 04/15] iommu: Add DOMAIN_ATTR_PTBASE Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-18 9:53 ` Joerg Roedel
[not found] ` <20190318095321.GA5417-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2019-03-18 14:19 ` Jordan Crouse
2019-03-18 14:19 ` Jordan Crouse
2019-04-26 14:13 ` Joerg Roedel [this message]
2019-04-26 14:13 ` Joerg Roedel
2019-03-01 19:38 ` [RFC PATCH v1 05/15] iommu/arm-smmu: Add auxiliary domain support for arm-smmuv2 Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-04 12:19 ` Jean-Philippe Brucker
2019-03-04 12:19 ` Jean-Philippe Brucker
2019-03-01 19:38 ` [RFC PATCH v1 06/15] drm/msm/adreno: Enable 64 bit mode by default on a5xx and a6xx targets Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 08/15] drm/msm: Pass the MMU domain index in struct msm_file_private Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 09/15] drm/msm/gpu: Move address space setup to the GPU targets Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
[not found] ` <1551469117-3404-10-git-send-email-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2019-03-01 23:01 ` Jonathan Marek
2019-03-01 23:01 ` Jonathan Marek
2019-03-01 19:38 ` [RFC PATCH v1 11/15] drm/msm: Add a helper function for a per-instance address space Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 07/15] drm/msm: Print all 64 bits of the faulting IOMMU address Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 10/15] drm/msm: Add support for IOMMU auxiliary domains Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 12/15] drm/msm: Add support to create target specific address spaces Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 13/15] drm/msm/gpu: Add ttbr0 to the memptrs Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 14/15] drm/msm/a6xx: Support per-instance pagetables Jordan Crouse
2019-03-01 19:38 ` [RFC PATCH v1 15/15] drm/msm/a5xx: " Jordan Crouse
2019-03-01 19:38 ` Jordan Crouse
[not found] ` <1551469117-3404-16-git-send-email-jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2019-03-01 20:24 ` Rob Clark
2019-03-01 20:24 ` Rob Clark
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190426141341.GB6731@8bytes.org \
--to=joro@8bytes.org \
--cc=baolu.lu@linux.intel.com \
--cc=dianders@chromium.org \
--cc=freedreno@lists.freedesktop.org \
--cc=hoegsberg@google.com \
--cc=iommu@lists.linux-foundation.org \
--cc=jean-philippe.brucker@arm.com \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.