From: Jason Gunthorpe <jgg@ziepe.ca>
To: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: linux-kernel@vger.kernel.org, iommu@lists.linux.dev,
joro@8bytes.org, robin.murphy@arm.com, ashish.kalra@amd.com,
thomas.lendacky@amd.com, vasant.hegde@amd.com, jon.grimm@amd.com
Subject: Re: [PATCH 3/4] iommu: Introduce IOMMU call-back for processing struct KVM assigned to VFIO
Date: Fri, 13 Jan 2023 11:35:46 -0400 [thread overview]
Message-ID: <Y8F6Uoi73BK6R+mc@ziepe.ca> (raw)
In-Reply-To: <20230110143137.54517-4-suravee.suthikulpanit@amd.com>
On Tue, Jan 10, 2023 at 08:31:36AM -0600, Suravee Suthikulpanit wrote:
> Currently, VFIO provide an kvm_vfio_file_set_kvm() interface for assigning
> a KVM structure to a VFIO group. The information in struct KVM is also
> useful for IOMMU drivers when setting up VFIO domain.
>
> Introduce struct iommu_domain_ops.set_kvm call-back function to allow
> IOMMU drivers to provide call-back to process the struct KVM
> assigned.
Also NAK
Connecting the iommu driver to KVM has to be properly architected
though iommufd.
> @@ -1652,6 +1652,7 @@ void vfio_file_set_kvm(struct file *file, struct kvm *kvm)
>
> mutex_lock(&group->group_lock);
> group->kvm = kvm;
> + iommu_set_kvm(group->iommu_group, kvm);
> mutex_unlock(&group->group_lock);
> }
This also has obvious lifetime bugs
Jason
next prev parent reply other threads:[~2023-01-13 15:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-10 14:31 [PATCH 0/4] iommu/amd: Force SNP-enabled VFIO domain to 4K page size Suravee Suthikulpanit
2023-01-10 14:31 ` [PATCH 1/4] iommu/amd: Introduce Protection-domain flag VFIO Suravee Suthikulpanit
2023-01-11 3:31 ` kernel test robot
2023-01-13 15:33 ` Jason Gunthorpe
2023-01-19 8:54 ` Kalra, Ashish
2023-01-19 17:44 ` Jason Gunthorpe
2023-01-20 15:12 ` Kalra, Ashish
2023-01-20 16:13 ` Jason Gunthorpe
2023-01-20 17:01 ` Kalra, Ashish
2023-01-20 17:50 ` Jason Gunthorpe
2023-01-20 19:55 ` Kalra, Ashish
2023-01-20 22:42 ` Tom Lendacky
2023-01-21 0:09 ` Jason Gunthorpe
2023-01-10 14:31 ` [PATCH 2/4] iommu/amd: Introduce structure amd_iommu_svm_ops.is_snp_guest() Suravee Suthikulpanit
2023-01-10 14:31 ` [PATCH 3/4] iommu: Introduce IOMMU call-back for processing struct KVM assigned to VFIO Suravee Suthikulpanit
2023-01-10 15:11 ` Robin Murphy
2023-01-17 4:20 ` Suthikulpanit, Suravee
2023-01-17 12:51 ` Robin Murphy
2023-01-13 15:35 ` Jason Gunthorpe [this message]
2023-01-17 5:31 ` Suthikulpanit, Suravee
2023-01-17 14:19 ` Jason Gunthorpe
2023-01-10 14:31 ` [PATCH 4/4] iommu/amd: Force SNP-enabled VFIO domain to 4K page size Suravee Suthikulpanit
2023-01-17 13:10 ` Eric van Tassell
2023-01-16 13:17 ` [PATCH 0/4] " Eric van Tassell
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