All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jason Gunthorpe <jgg@nvidia.com>
To: Alim Akhtar <alim.akhtar@samsung.com>,
	iommu@lists.linux.dev, Joerg Roedel <joro@8bytes.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Robin Murphy <robin.murphy@arm.com>,
	Will Deacon <will@kernel.org>
Subject: Re: [PATCH] iommu/exynos: Implement an IDENTITY domain
Date: Fri, 19 May 2023 12:39:47 -0300	[thread overview]
Message-ID: <ZGeYQ6DAca6ujN18@nvidia.com> (raw)
In-Reply-To: <0-v1-9bede1ab3a9b+15-exynos-identity_jgg@nvidia.com>

On Thu, Apr 06, 2023 at 08:42:57PM -0300, Jason Gunthorpe wrote:
> What exynos calls exynos_iommu_detach_device is actually putting the iommu
> into identity mode. Instead of having a translation mode that is invisible
> to the core code implement it as an actual IDENTITY domain.
> 
> On ARM64 this will allow the IDENTITIY dma iommu mode to work, and on
> ARM32 this clarifies what set_platform_dma_ops is actually doing.
> 
> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
> ---
>  drivers/iommu/exynos-iommu.c | 67 ++++++++++++++++++++++--------------
>  1 file changed, 42 insertions(+), 25 deletions(-)
> 
> Marek, as requested here is that patch on top of your stuff that went to rc

Just for clarity this patch was superseded by this series where it is patch
10:

https://lore.kernel.org/linux-iommu/0-v2-8d1dc464eac9+10f-iommu_all_defdom_jgg@nvidia.com

Jason

WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: Alim Akhtar <alim.akhtar@samsung.com>,
	iommu@lists.linux.dev, Joerg Roedel <joro@8bytes.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Robin Murphy <robin.murphy@arm.com>,
	Will Deacon <will@kernel.org>
Subject: Re: [PATCH] iommu/exynos: Implement an IDENTITY domain
Date: Fri, 19 May 2023 12:39:47 -0300	[thread overview]
Message-ID: <ZGeYQ6DAca6ujN18@nvidia.com> (raw)
In-Reply-To: <0-v1-9bede1ab3a9b+15-exynos-identity_jgg@nvidia.com>

On Thu, Apr 06, 2023 at 08:42:57PM -0300, Jason Gunthorpe wrote:
> What exynos calls exynos_iommu_detach_device is actually putting the iommu
> into identity mode. Instead of having a translation mode that is invisible
> to the core code implement it as an actual IDENTITY domain.
> 
> On ARM64 this will allow the IDENTITIY dma iommu mode to work, and on
> ARM32 this clarifies what set_platform_dma_ops is actually doing.
> 
> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
> ---
>  drivers/iommu/exynos-iommu.c | 67 ++++++++++++++++++++++--------------
>  1 file changed, 42 insertions(+), 25 deletions(-)
> 
> Marek, as requested here is that patch on top of your stuff that went to rc

Just for clarity this patch was superseded by this series where it is patch
10:

https://lore.kernel.org/linux-iommu/0-v2-8d1dc464eac9+10f-iommu_all_defdom_jgg@nvidia.com

Jason

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2023-05-19 15:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-06 23:42 [PATCH] iommu/exynos: Implement an IDENTITY domain Jason Gunthorpe
2023-04-06 23:42 ` Jason Gunthorpe
2023-05-19 15:39 ` Jason Gunthorpe [this message]
2023-05-19 15:39   ` Jason Gunthorpe

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=ZGeYQ6DAca6ujN18@nvidia.com \
    --to=jgg@nvidia.com \
    --cc=alim.akhtar@samsung.com \
    --cc=iommu@lists.linux.dev \
    --cc=joro@8bytes.org \
    --cc=krzysztof.kozlowski@linaro.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-samsung-soc@vger.kernel.org \
    --cc=m.szyprowski@samsung.com \
    --cc=robin.murphy@arm.com \
    --cc=will@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.