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From: Nicolin Chen <nicolinc@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
	"thierry.reding@gmail.com" <thierry.reding@gmail.com>,
	"will@kernel.org" <will@kernel.org>,
	"jean-philippe@linaro.org" <jean-philippe@linaro.org>,
	"corbet@lwn.net" <corbet@lwn.net>,
	"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"cohuck@redhat.com" <cohuck@redhat.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"iommu@lists.linux-foundation.org"
	<iommu@lists.linux-foundation.org>,
	"robin.murphy@arm.com" <robin.murphy@arm.com>
Subject: Re: [RFC][PATCH v2 00/13] iommu/arm-smmu-v3: Add NVIDIA implementation
Date: Thu, 16 Sep 2021 11:21:56 -0700	[thread overview]
Message-ID: <20210916182155.GA29656@Asurada-Nvidia> (raw)
In-Reply-To: <BN9PR11MB54337332A83176241C984EC58CCE9@BN9PR11MB5433.namprd11.prod.outlook.com>

Hi Kevin,

On Thu, Sep 02, 2021 at 10:27:06PM +0000, Tian, Kevin wrote:

> > Indeed, this looks like a flavour of the accelerated invalidation
> > stuff we've talked about already.
> >
> > I would see it probably exposed as some HW specific IOCTL on the iommu
> > fd to get access to the accelerated invalidation for IOASID's in the
> > FD.
> >
> > Indeed, this seems like a further example of why /dev/iommu is looking
> > like a good idea as this RFC is very complicated to do something
> > fairly simple.
> >
> > Where are thing on the /dev/iommu work these days?
> 
> We are actively working on the basic skeleton. Our original plan is to send
> out the 1st draft before LPC, with support of vfio type1 semantics and
> and pci dev only (single-device group). But later we realized that adding
> multi-devices group support is also necessary even in the 1st draft to avoid
> some dirty hacks and build the complete picture. This will add some time
> though. If things go well, we'll still try hit the original plan. If not, it will be
> soon after LPC.

As I also want to take a look at your work for this implementation,
would you please CC me when you send out your patches? Thank you!

      reply	other threads:[~2021-09-16 18:30 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-31  2:59 Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 01/13] iommu: Add set_nesting_vmid/get_nesting_vmid functions Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 02/13] vfio: add VFIO_IOMMU_GET_VMID and VFIO_IOMMU_SET_VMID Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 03/13] vfio: Document VMID control for IOMMU Virtualization Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 04/13] vfio: add set_vmid and get_vmid for vfio_iommu_type1 Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 05/13] vfio/type1: Implement set_vmid and get_vmid Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 06/13] vfio/type1: Set/get VMID to/from iommu driver Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 07/13] iommu/arm-smmu-v3: Add shared VMID support for NESTING Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 08/13] iommu/arm-smmu-v3: Add VMID alloc/free helpers Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 09/13] iommu/arm-smmu-v3: Pass dev pointer to arm_smmu_detach_dev Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 10/13] iommu/arm-smmu-v3: Pass cmdq pointer in arm_smmu_cmdq_issue_cmdlist() Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 11/13] iommu/arm-smmu-v3: Add implementation infrastructure Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 12/13] iommu/arm-smmu-v3: Add support for NVIDIA CMDQ-Virtualization hw Nicolin Chen
2021-08-31  2:59 ` [RFC][PATCH v2 13/13] iommu/nvidia-smmu-v3: Add mdev interface support Nicolin Chen
2021-08-31 16:15 ` [RFC][PATCH v2 00/13] iommu/arm-smmu-v3: Add NVIDIA implementation Alex Williamson
2021-09-01  6:55   ` Tian, Kevin
2021-09-02 14:45     ` Jason Gunthorpe
2021-09-02 22:27       ` Tian, Kevin
2021-09-16 18:21         ` Nicolin Chen [this message]

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