From: Jason Gunthorpe <jgg@nvidia.com>
To: Pranjal Shrivastava <praan@google.com>
Cc: Dmitry Malkin <dma@nebius.com>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <joro@8bytes.org>,
Nicolin Chen <nicolinc@nvidia.com>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"regressions@lists.linux.dev" <regressions@lists.linux.dev>,
"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: [RFC PATCH] iommu/arm-smmu-v3: Allow nested attach for PCI bridges without vDEVICE
Date: Fri, 14 Aug 2026 14:49:45 -0300 [thread overview]
Message-ID: <20260814174945.GD510472@nvidia.com> (raw)
In-Reply-To: <an8jEbT9pAUYfsvR@google.com>
On Fri, Aug 14, 2026 at 02:15:45PM +0000, Pranjal Shrivastava wrote:
> Also, regarding RID aliasing: while it's true the host bridge doesn't
> need a vDEVICE for its own host-consumed DMAs (like AER/PME), are we
RID aliasing shouldn't exist in any modern system. Unfortunately Linux
gets some things wrong in its ACS processing :\
Jason
next prev parent reply other threads:[~2026-08-14 17:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-14 10:07 [RFC PATCH] iommu/arm-smmu-v3: Allow nested attach for PCI bridges without vDEVICE Dmitry Malkin
2026-08-14 14:15 ` Pranjal Shrivastava
2026-08-14 15:40 ` Dmitry Malkin
2026-08-14 17:49 ` Jason Gunthorpe [this message]
2026-08-14 17:48 ` Jason Gunthorpe
2026-08-14 18:56 ` Dmitry Malkin
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