From: Baolu Lu <baolu.lu@linux.intel.com>
To: Jason Gunthorpe <jgg@nvidia.com>, Bjorn Helgaas <helgaas@kernel.org>
Cc: baolu.lu@linux.intel.com, Joerg Roedel <joro@8bytes.org>,
Christoph Hellwig <hch@infradead.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Kevin Tian <kevin.tian@intel.com>,
Ashok Raj <ashok.raj@intel.com>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
Dave Jiang <dave.jiang@intel.com>, Vinod Koul <vkoul@kernel.org>,
Eric Auger <eric.auger@redhat.com>, Liu Yi L <yi.l.liu@intel.com>,
Jacob jun Pan <jacob.jun.pan@intel.com>,
Zhangfei Gao <zhangfei.gao@linaro.org>,
Zhu Tony <tony.zhu@intel.com>,
iommu@lists.linux.dev, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v11 04/13] PCI: Allow PASID only when ACS enforced on upstreaming path
Date: Thu, 18 Aug 2022 19:55:28 +0800 [thread overview]
Message-ID: <c0de76f1-6b8e-2fc0-a7e7-5d2c29df4509@linux.intel.com> (raw)
In-Reply-To: <Yv1wVfCWHnTdvPOc@nvidia.com>
On 2022/8/18 06:48, Jason Gunthorpe wrote:
> On Wed, Aug 17, 2022 at 04:17:43PM -0500, Bjorn Helgaas wrote:
>
>> Does the PCIe spec really allow TLPs with PASID to be routed anywhere
>> except upstream?
> I think yes:
>
> 2.2.10.2 End-End TLP Prefix Processing:
>
> The presence of an End-End TLP Prefix does not alter the routing of a
> TLP. TLPs are routed based on the routing rules covered in Section
> 2.2.4 .
>
> Which I read as saying that routing is done after stripping all the
> prefixes. PASID is a prefix.
>
> Lu, you may want to quote the spec in the commit message to make it
> clear.
Yes. Sure thing. Thank you!
Best regards,
baolu
next prev parent reply other threads:[~2022-08-18 11:56 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-17 1:20 [PATCH v11 00/13] iommu: SVA and IOPF refactoring Lu Baolu
2022-08-17 1:20 ` [PATCH v11 01/13] iommu: Add max_pasids field in struct iommu_device Lu Baolu
2022-08-17 1:20 ` [PATCH v11 02/13] iommu: Add max_pasids field in struct dev_iommu Lu Baolu
2022-08-17 1:20 ` [PATCH v11 03/13] iommu: Remove SVM_FLAG_SUPERVISOR_MODE support Lu Baolu
2022-08-17 1:20 ` [PATCH v11 04/13] PCI: Allow PASID only when ACS enforced on upstreaming path Lu Baolu
2022-08-17 21:17 ` Bjorn Helgaas
2022-08-17 22:48 ` Jason Gunthorpe
2022-08-18 11:55 ` Baolu Lu [this message]
2022-08-18 11:53 ` Baolu Lu
2022-08-18 23:00 ` Bjorn Helgaas
2022-08-22 7:43 ` Ethan Zhao
2022-08-23 7:05 ` Baolu Lu
2022-08-24 16:23 ` Bjorn Helgaas
2022-08-18 13:04 ` Jason Gunthorpe
2022-08-23 7:10 ` Baolu Lu
2022-08-17 1:20 ` [PATCH v11 05/13] iommu: Add attach/detach_dev_pasid iommu interface Lu Baolu
2022-08-18 13:33 ` Jason Gunthorpe
2022-08-23 7:30 ` Baolu Lu
2022-08-17 1:20 ` [PATCH v11 06/13] iommu: Add IOMMU SVA domain support Lu Baolu
2022-08-17 1:20 ` [PATCH v11 07/13] iommu/vt-d: Add " Lu Baolu
2022-08-18 13:36 ` Jason Gunthorpe
2022-08-23 7:33 ` Baolu Lu
2022-08-17 1:20 ` [PATCH v11 08/13] arm-smmu-v3/sva: " Lu Baolu
2022-08-17 1:20 ` [PATCH v11 09/13] iommu/sva: Refactoring iommu_sva_bind/unbind_device() Lu Baolu
2022-08-18 13:41 ` Jason Gunthorpe
2022-08-23 10:12 ` Baolu Lu
2022-08-17 1:20 ` [PATCH v11 10/13] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-08-17 1:20 ` [PATCH v11 11/13] iommu: Prepare IOMMU domain for IOPF Lu Baolu
2022-08-17 1:20 ` [PATCH v11 12/13] iommu: Per-domain I/O page fault handling Lu Baolu
2022-08-17 1:20 ` [PATCH v11 13/13] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu
2022-08-22 4:49 ` [PATCH v11 00/13] iommu: SVA and IOPF refactoring Zhangfei Gao
2022-08-23 7:00 ` Baolu Lu
2022-08-26 4:17 ` Baolu Lu
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