From: Jason Gunthorpe <jgg@nvidia.com>
To: Baolu Lu <baolu.lu@linux.intel.com>
Cc: Zhangfei Gao <zhangfei.gao@linaro.org>,
acpica-devel@lists.linux.dev, iommu@lists.linux.dev,
Joerg Roedel <joro@8bytes.org>, Kevin Tian <kevin.tian@intel.com>,
kvm@vger.kernel.org, Len Brown <lenb@kernel.org>,
linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Lorenzo Pieralisi <lpieralisi@kernel.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Robert Moore <robert.moore@intel.com>,
Robin Murphy <robin.murphy@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
Will Deacon <will@kernel.org>,
Alex Williamson <alex.williamson@redhat.com>,
Donald Dutile <ddutile@redhat.com>,
Eric Auger <eric.auger@redhat.com>,
Hanjun Guo <guohanjun@huawei.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Jerry Snitselaar <jsnitsel@redhat.com>,
Moritz Fischer <mdf@kernel.org>,
Michael Shavit <mshavit@google.com>,
Nicolin Chen <nicolinc@nvidia.com>,
patches@lists.linux.dev,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>,
Mostafa Saleh <smostafa@google.com>
Subject: Re: [PATCH v4 00/12] Initial support for SMMUv3 nested translation
Date: Wed, 22 Jan 2025 15:26:22 -0400 [thread overview]
Message-ID: <20250122192622.GA965540@nvidia.com> (raw)
In-Reply-To: <20241115175522.GA35230@nvidia.com>
On Fri, Nov 15, 2024 at 01:55:22PM -0400, Jason Gunthorpe wrote:
> > > I need your help to remove IOMMU_DEV_FEAT_IOPF from the intel
> > > driver. I have a patch series that eliminates it from all the other
> > > drivers, and I wrote a patch to remove FEAT_SVA from intel..
> >
> > Yes, sure. Let's make this happen in the next cycle.
> >
> > FEAT_IOPF could be removed. IOPF manipulation can be handled in the
> > domain attachment path. A per-device refcount can be implemented. This
> > count increments with each iopf-capable domain attachment and decrements
> > with each detachment. PCI PRI is enabled for the first iopf-capable
> > domain and disabled when the last one is removed. Probably we can also
> > solve the PF/VF sharing PRI issue.
>
> Here is what I have so far, if you send me a patch for vt-d to move
> FEAT_IOPF into attach as you describe above (see what I did to arm for
> example), then I can send it next cycle
>
> https://github.com/jgunthorpe/linux/commits/iommu_no_feat/
Hey Baolu, a reminder on this, lets try for it next cycle?
Thanks,
Jason
next prev parent reply other threads:[~2025-01-22 19:28 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-31 0:20 [PATCH v4 00/12] Initial support for SMMUv3 nested translation Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 01/12] vfio: Remove VFIO_TYPE1_NESTING_IOMMU Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 02/12] ACPICA: IORT: Update for revision E.f Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 03/12] ACPI/IORT: Support CANWBS memory access flag Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 04/12] iommu/arm-smmu-v3: Report IOMMU_CAP_ENFORCE_CACHE_COHERENCY for CANWBS Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 05/12] iommu/arm-smmu-v3: Support IOMMU_GET_HW_INFO via struct arm_smmu_hw_info Jason Gunthorpe
2024-11-04 11:47 ` Will Deacon
2024-11-04 12:41 ` Jason Gunthorpe
2024-11-06 16:37 ` Robin Murphy
2024-11-06 18:05 ` Jason Gunthorpe
2024-11-06 21:05 ` Robin Murphy
2024-11-06 21:53 ` Nicolin Chen
2024-11-07 2:35 ` Jason Gunthorpe
2024-11-07 15:51 ` Jason Gunthorpe
2024-11-08 14:53 ` Will Deacon
2024-11-08 15:42 ` Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 06/12] iommu/arm-smmu-v3: Implement IOMMU_HWPT_ALLOC_NEST_PARENT Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 07/12] iommu/arm-smmu-v3: Expose the arm_smmu_attach interface Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 08/12] iommu/arm-smmu-v3: Support IOMMU_VIOMMU_ALLOC Jason Gunthorpe
2024-11-29 14:38 ` Shameerali Kolothum Thodi
2024-11-29 15:06 ` Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 09/12] iommu/arm-smmu-v3: Support IOMMU_DOMAIN_NESTED Jason Gunthorpe
2024-10-31 6:21 ` Zhangfei Gao
2024-11-04 17:19 ` Jason Gunthorpe
2024-11-06 5:39 ` Zhangfei Gao
2024-10-31 0:20 ` [PATCH v4 10/12] iommu/arm-smmu-v3: Use S2FWB for NESTED domains Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 11/12] iommu/arm-smmu-v3: Allow ATS for IOMMU_DOMAIN_NESTED Jason Gunthorpe
2024-10-31 0:20 ` [PATCH v4 12/12] iommu/arm-smmu-v3: Support IOMMU_HWPT_INVALIDATE using a VIOMMU object Jason Gunthorpe
2024-10-31 0:53 ` [PATCH v4 00/12] Initial support for SMMUv3 nested translation Nicolin Chen
2024-11-01 12:18 ` Will Deacon
2024-11-01 13:25 ` Jason Gunthorpe
2024-11-05 16:48 ` Will Deacon
2024-11-05 17:03 ` Jason Gunthorpe
2024-11-08 14:56 ` Will Deacon
2024-11-12 18:29 ` Jason Gunthorpe
2024-11-13 1:01 ` Zhangfei Gao
2024-11-13 1:23 ` Jason Gunthorpe
2024-11-13 2:55 ` Baolu Lu
2024-11-13 6:28 ` Zhangfei Gao
2024-11-13 16:43 ` Jason Gunthorpe
2024-11-14 0:51 ` Baolu Lu
2024-11-15 17:55 ` Jason Gunthorpe
2025-01-22 19:26 ` Jason Gunthorpe [this message]
2025-02-05 3:45 ` Baolu Lu
2025-02-13 11:57 ` Baolu Lu
2025-02-13 18:43 ` Jason Gunthorpe
2025-02-14 5:39 ` Baolu Lu
2025-02-14 12:41 ` Jason Gunthorpe
2025-02-15 9:53 ` Baolu Lu
2025-02-18 13:03 ` Jason Gunthorpe
2025-02-19 2:09 ` Baolu Lu
2025-02-19 8:34 ` Tian, Kevin
2025-02-20 2:10 ` Baolu Lu
2025-02-20 6:51 ` Tian, Kevin
2025-02-20 11:49 ` Baolu Lu
2025-02-21 4:28 ` Tian, Kevin
2025-02-21 13:04 ` Jason Gunthorpe
2025-02-22 7:13 ` Baolu Lu
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