From: Jason Gunthorpe <jgg@ziepe.ca>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Peng Fan <peng.fan@nxp.com>,
"eric.auger@redhat.com" <eric.auger@redhat.com>,
"jean-philippe.brucker@arm.com" <jean-philippe.brucker@arm.com>,
"will@kernel.org" <will@kernel.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: arm-smmu-v3 sharing SID
Date: Thu, 18 May 2023 09:36:53 -0300 [thread overview]
Message-ID: <ZGYb5Y1eAgvt/TdY@ziepe.ca> (raw)
In-Reply-To: <359b01bc-e87a-9a50-c971-681e89985491@arm.com>
On Thu, May 18, 2023 at 12:33:25PM +0100, Robin Murphy wrote:
> I'm fairly confident in reasoning about this for basic .attach_dev purposes,
> since I did implement the equivalent for SMMUv2, but I'm not sure I even
> want to think about what it would mean for SVA, PASIDs and nesting...
IIRC we've already taken the approach elsewhere to block PASID if the
group is not singleton.
Jason
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prev parent reply other threads:[~2023-05-18 12:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-18 10:46 arm-smmu-v3 sharing SID Peng Fan
2023-05-18 11:33 ` Robin Murphy
2023-05-18 11:44 ` Peng Fan
2023-05-18 13:04 ` Jean-Philippe Brucker
2023-05-19 2:49 ` Baolu Lu
2023-05-18 12:36 ` Jason Gunthorpe [this message]
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