From: Nicolin Chen <nicolinc@nvidia•com>
To: Pranjal Shrivastava <praan@google•com>
Cc: <iommu@lists•linux.dev>, <linux-pci@vger•kernel.org>,
<linux-arm-kernel@lists•infradead.org>,
<linux-kernel@vger•kernel.org>, "Joerg Roedel" <joro@8bytes•org>,
Will Deacon <will@kernel•org>,
Bjorn Helgaas <bhelgaas@google•com>,
David Woodhouse <dwmw2@infradead•org>,
Lu Baolu <baolu.lu@linux•intel.com>,
Robin Murphy <robin.murphy@arm•com>,
"Suravee Suthikulpanit" <suravee.suthikulpanit@amd•com>,
Jason Gunthorpe <jgg@ziepe•ca>,
David Matlack <dmatlack@google•com>,
Samiullah Khawaja <skhawaja@google•com>,
Daniel Mentz <danielmentz@google•com>,
Pasha Tatashin <pasha.tatashin@soleen•com>,
Mostafa Saleh <smostafa@google•com>,
"Jason Gunthorpe" <jgg@nvidia•com>
Subject: Re: [PATCH v4 1/5] PCI/ATS: Ensure pci_ats_supported() is PF-aware for VFs
Date: Mon, 25 May 2026 12:42:21 -0700 [thread overview]
Message-ID: <ahSmHVGOUQDd2bkk@Asurada-Nvidia> (raw)
In-Reply-To: <20260525184347.4059549-2-praan@google.com>
On Mon, May 25, 2026 at 06:43:43PM +0000, Pranjal Shrivastava wrote:
> Update pci_ats_supported() to additionally check the associated PF's
> status when called on a VF. This ensures that PF-level quirks and
> untrusted status are correctly propagated to VFs, providing a robust
> support check that aligns with the kernel's PF-centric ATS configuration
> model and is immune to the timing of VF-specific fixups.
>
> Reviewed-by: Jason Gunthorpe <jgg@nvidia•com>
> Reviewed-by: Samiullah Khawaja <skhawaja@google•com>
> Signed-off-by: Pranjal Shrivastava <praan@google•com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia•com>
next prev parent reply other threads:[~2026-05-25 20:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-25 18:43 [PATCH v4 0/5] iommu: Standardize ATS robustness and state tracking Pranjal Shrivastava
2026-05-25 18:43 ` [PATCH v4 1/5] PCI/ATS: Ensure pci_ats_supported() is PF-aware for VFs Pranjal Shrivastava
2026-05-25 19:42 ` Nicolin Chen [this message]
2026-05-25 18:43 ` [PATCH v4 2/5] PCI/ATS: Validate STU for VFs in pci_prepare_ats() Pranjal Shrivastava
2026-05-25 19:46 ` Nicolin Chen
2026-05-28 20:27 ` Pranjal Shrivastava
2026-05-25 18:43 ` [PATCH v4 3/5] iommu/arm-smmu-v3: Fix ATS state tracking Pranjal Shrivastava
2026-05-25 20:05 ` Nicolin Chen
2026-05-25 20:30 ` Pranjal Shrivastava
2026-05-25 20:40 ` Nicolin Chen
2026-05-25 18:43 ` [PATCH v4 4/5] iommu/vt-d: Fail probe on ATS configuration failure Pranjal Shrivastava
2026-05-25 18:43 ` [PATCH v4 5/5] iommu/amd: " Pranjal Shrivastava
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