From: Jason Gunthorpe <jgg@ziepe.ca>
To: James Gowans <jgowans@amazon.com>
Cc: linux-kernel@vger.kernel.org,
Eric Biederman <ebiederm@xmission.com>,
kexec@lists.infradead.org, Joerg Roedel <joro@8bytes.org>,
Will Deacon <will@kernel.org>,
iommu@lists.linux.dev, Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>,
linux-fsdevel@vger.kernel.org,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
kvm@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Alexander Graf <graf@amazon.com>,
David Woodhouse <dwmw@amazon.co.uk>,
"Jan H . Schoenherr" <jschoenh@amazon.de>,
Usama Arif <usama.arif@bytedance.com>,
Anthony Yznaga <anthony.yznaga@oracle.com>,
Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>,
madvenka@linux.microsoft.com, steven.sistare@oracle.com,
yuleixzhang@tencent.com
Subject: Re: [RFC 13/18] vfio: add ioctl to define persistent pgtables on container
Date: Mon, 5 Feb 2024 13:08:39 -0400 [thread overview]
Message-ID: <20240205170839.GA31743@ziepe.ca> (raw)
In-Reply-To: <20240205120203.60312-14-jgowans@amazon.com>
On Mon, Feb 05, 2024 at 12:01:58PM +0000, James Gowans wrote:
> The previous commits added a file type in pkernfs for IOMMU persistent
> page tables. Now support actually setting persistent page tables on an
> IOMMU domain. This is done via a VFIO ioctl on a VFIO container.
Please no changes to VFIO in the iommu area, new features need to be
implemented on top of iommufd instead.
We already have the infrastructure there to customize iommu_domain
allocations that this can be implemented on top of.
Jason
next prev parent reply other threads:[~2024-02-05 17:08 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-05 12:01 [RFC 00/18] Pkernfs: Support persistence for live update James Gowans
2024-02-05 12:01 ` [RFC 01/18] pkernfs: Introduce filesystem skeleton James Gowans
2024-02-05 12:01 ` [RFC 02/18] pkernfs: Add persistent inodes hooked into directies James Gowans
2024-02-05 12:01 ` [RFC 03/18] pkernfs: Define an allocator for persistent pages James Gowans
2024-02-05 12:01 ` [RFC 04/18] pkernfs: support file truncation James Gowans
2024-02-05 12:01 ` [RFC 05/18] pkernfs: add file mmap callback James Gowans
2024-02-05 23:34 ` Dave Chinner
2024-02-05 12:01 ` [RFC 06/18] init: Add liveupdate cmdline param James Gowans
2024-02-05 12:01 ` [RFC 07/18] pkernfs: Add file type for IOMMU root pgtables James Gowans
2024-02-05 12:01 ` [RFC 08/18] iommu: Add allocator for pgtables from persistent region James Gowans
2024-02-05 12:01 ` [RFC 09/18] intel-iommu: Use pkernfs for root/context pgtable pages James Gowans
2024-02-05 12:01 ` [RFC 10/18] iommu/intel: zap context table entries on kexec James Gowans
2024-02-05 12:01 ` [RFC 11/18] dma-iommu: Always enable deferred attaches for liveupdate James Gowans
2024-02-05 17:45 ` Jason Gunthorpe
2024-02-05 12:01 ` [RFC 12/18] pkernfs: Add IOMMU domain pgtables file James Gowans
2024-02-05 12:01 ` [RFC 13/18] vfio: add ioctl to define persistent pgtables on container James Gowans
2024-02-05 17:08 ` Jason Gunthorpe [this message]
2024-02-05 12:01 ` [RFC 14/18] intel-iommu: Allocate domain pgtable pages from pkernfs James Gowans
2024-02-05 17:12 ` Jason Gunthorpe
2024-02-05 12:02 ` [RFC 15/18] pkernfs: register device memory for IOMMU domain pgtables James Gowans
2024-02-05 12:02 ` [RFC 16/18] vfio: support not mapping IOMMU pgtables on live-update James Gowans
2024-02-05 12:02 ` [RFC 17/18] pci: Don't clear bus master is persistence enabled James Gowans
2024-02-05 12:02 ` [RFC 18/18] vfio-pci: Assume device working after liveupdate James Gowans
2024-02-05 17:10 ` [RFC 00/18] Pkernfs: Support persistence for live update Alex Williamson
2024-02-07 14:56 ` Gowans, James
2024-02-07 15:28 ` Jason Gunthorpe
2024-02-05 17:42 ` Jason Gunthorpe
2024-02-07 14:45 ` Gowans, James
2024-02-07 15:22 ` Jason Gunthorpe
2024-02-06 14:55 ` Luca Boccassi
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