From: Jason Gunthorpe <jgg@nvidia.com>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Nicolin Chen <nicolinc@nvidia.com>,
will@kernel.org, joro@8bytes.org,
shameerali.kolothum.thodi@huawei.com, yangyicong@hisilicon.com,
jean-philippe@linaro.org, linux-arm-kernel@lists.infradead.org,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1] iommu/arm-smmu-v3: Allow default substream bypass with a pasid support
Date: Wed, 28 Jun 2023 12:43:25 -0300 [thread overview]
Message-ID: <ZJxVHf2YZ1LxPx23@nvidia.com> (raw)
In-Reply-To: <2274ba47-7def-082c-8429-8f2cc18adf9f@arm.com>
On Wed, Jun 28, 2023 at 04:39:48PM +0100, Robin Murphy wrote:
> > I'd try keeping most of the parts intact while adding a pointer
> > to a structure holding pagetable stuff, to make it cleaner. Then
> > the S1DSS bypass case can be flagged by an empty pointer.
>
> I'd expect that what you need for this is much the same as what Michael has
> already proposed for the PASID-generalisation series. The current inside-out
> notion of S1 domains owning CD tables is what's getting in the way of doing
> the right thing cleanly, in both cases.
Yeah, that was sort of my guessed feeling as well..
What do you think of Michael's series?
Jason
next prev parent reply other threads:[~2023-06-28 15:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-27 3:33 [PATCH v1] iommu/arm-smmu-v3: Allow default substream bypass with a pasid support Nicolin Chen
2023-06-27 9:00 ` Robin Murphy
2023-06-27 17:06 ` Nicolin Chen
2023-06-27 23:29 ` Robin Murphy
2023-06-28 0:13 ` Nicolin Chen
2023-06-28 15:39 ` Robin Murphy
2023-06-28 15:43 ` Jason Gunthorpe [this message]
2023-06-28 15:59 ` Nicolin Chen
2023-09-12 22:13 ` Aahil Awatramani
2023-09-14 1:02 ` Nicolin Chen
2023-09-14 9:01 ` Michael Shavit
2023-09-14 10:26 ` Nicolin Chen
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