From: Jason Gunthorpe <jgg@nvidia.com>
To: Matthew Rosato <mjrosato@linux.ibm.com>
Cc: linux-s390@vger.kernel.org, alex.williamson@redhat.com,
cohuck@redhat.com, schnelle@linux.ibm.com, farman@linux.ibm.com,
pmorel@linux.ibm.com, borntraeger@linux.ibm.com,
hca@linux.ibm.com, gor@linux.ibm.com,
gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com,
svens@linux.ibm.com, frankja@linux.ibm.com, david@redhat.com,
imbrenda@linux.ibm.com, vneethv@linux.ibm.com,
oberpar@linux.ibm.com, freude@linux.ibm.com, thuth@redhat.com,
pasic@linux.ibm.com, joro@8bytes.org, will@kernel.org,
pbonzini@redhat.com, corbet@lwn.net, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-doc@vger.kernel.org
Subject: Re: [PATCH v4 29/32] vfio-pci/zdev: add DTSM to clp group capability
Date: Mon, 14 Mar 2022 18:49:28 -0300 [thread overview]
Message-ID: <20220314214928.GK11336@nvidia.com> (raw)
In-Reply-To: <20220314194451.58266-30-mjrosato@linux.ibm.com>
On Mon, Mar 14, 2022 at 03:44:48PM -0400, Matthew Rosato wrote:
> The DTSM, or designation type supported mask, indicates what IOAT formats
> are available to the guest. For an interpreted device, userspace will not
> know what format(s) the IOAT assist supports, so pass it via the
> capability chain. Since the value belongs to the Query PCI Function Group
> clp, let's extend the existing capability with a new version.
Why is this on the VFIO device?
Maybe I don't quite understand it right, but the IOAT is the
'userspace page table'?
That is something that should be modeled as a nested iommu domain.
Querying the formats and any control logic for this should be on the
iommu side not built into VFIO.
Jason
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe via iommu <iommu@lists.linux-foundation.org>
To: Matthew Rosato <mjrosato@linux.ibm.com>
Cc: kvm@vger.kernel.org, david@redhat.com, thuth@redhat.com,
linux-kernel@vger.kernel.org, vneethv@linux.ibm.com,
agordeev@linux.ibm.com, imbrenda@linux.ibm.com, will@kernel.org,
linux-s390@vger.kernel.org, frankja@linux.ibm.com,
corbet@lwn.net, linux-doc@vger.kernel.org, pasic@linux.ibm.com,
gerald.schaefer@linux.ibm.com, borntraeger@linux.ibm.com,
farman@linux.ibm.com, gor@linux.ibm.com, schnelle@linux.ibm.com,
hca@linux.ibm.com, alex.williamson@redhat.com,
freude@linux.ibm.com, pmorel@linux.ibm.com, cohuck@redhat.com,
oberpar@linux.ibm.com, iommu@lists.linux-foundation.org,
svens@linux.ibm.com, pbonzini@redhat.com
Subject: Re: [PATCH v4 29/32] vfio-pci/zdev: add DTSM to clp group capability
Date: Mon, 14 Mar 2022 18:49:28 -0300 [thread overview]
Message-ID: <20220314214928.GK11336@nvidia.com> (raw)
In-Reply-To: <20220314194451.58266-30-mjrosato@linux.ibm.com>
On Mon, Mar 14, 2022 at 03:44:48PM -0400, Matthew Rosato wrote:
> The DTSM, or designation type supported mask, indicates what IOAT formats
> are available to the guest. For an interpreted device, userspace will not
> know what format(s) the IOAT assist supports, so pass it via the
> capability chain. Since the value belongs to the Query PCI Function Group
> clp, let's extend the existing capability with a new version.
Why is this on the VFIO device?
Maybe I don't quite understand it right, but the IOAT is the
'userspace page table'?
That is something that should be modeled as a nested iommu domain.
Querying the formats and any control logic for this should be on the
iommu side not built into VFIO.
Jason
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next prev parent reply other threads:[~2022-03-14 21:49 UTC|newest]
Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-14 19:44 [PATCH v4 00/32] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 01/32] s390/sclp: detect the zPCI load/store interpretation facility Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 02/32] s390/sclp: detect the AISII facility Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 03/32] s390/sclp: detect the AENI facility Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 04/32] s390/sclp: detect the AISI facility Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 05/32] s390/airq: pass more TPI info to airq handlers Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 06/32] s390/airq: allow for airq structure that uses an input vector Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 07/32] s390/pci: externalize the SIC operation controls and routine Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 08/32] s390/pci: stash associated GISA designation Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 09/32] s390/pci: export some routines related to RPCIT processing Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 10/32] s390/pci: stash dtsm and maxstbl Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 11/32] s390/pci: add helper function to find device by handle Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 12/32] s390/pci: get SHM information from list pci Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 13/32] s390/pci: return status from zpci_refresh_trans Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 14/32] iommu: introduce iommu_domain_alloc_type and the KVM type Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 21:36 ` Jason Gunthorpe
2022-03-14 21:36 ` Jason Gunthorpe via iommu
2022-03-15 10:49 ` Robin Murphy
2022-03-15 10:49 ` Robin Murphy
2022-03-17 5:47 ` Tian, Kevin
2022-03-17 5:47 ` Tian, Kevin
2022-03-17 13:52 ` Jason Gunthorpe
2022-03-17 13:52 ` Jason Gunthorpe via iommu
2022-03-18 2:23 ` Tian, Kevin
2022-03-18 2:23 ` Tian, Kevin
2022-03-18 14:13 ` Jason Gunthorpe
2022-03-18 14:13 ` Jason Gunthorpe via iommu
2022-03-19 7:51 ` Tian, Kevin
2022-03-19 7:51 ` Tian, Kevin
2022-03-21 14:07 ` Jason Gunthorpe
2022-03-21 14:07 ` Jason Gunthorpe via iommu
2022-03-22 7:30 ` Tian, Kevin
2022-03-22 7:30 ` Tian, Kevin
2022-03-14 19:44 ` [PATCH v4 15/32] vfio: introduce KVM-owned IOMMU type Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 21:38 ` Jason Gunthorpe
2022-03-14 21:38 ` Jason Gunthorpe via iommu
2022-03-15 13:49 ` Matthew Rosato
2022-03-15 13:49 ` Matthew Rosato
2022-03-15 14:38 ` Jason Gunthorpe
2022-03-15 14:38 ` Jason Gunthorpe via iommu
2022-03-15 16:29 ` Matthew Rosato
2022-03-15 16:29 ` Matthew Rosato
2022-03-15 17:25 ` Jason Gunthorpe
2022-03-15 17:25 ` Jason Gunthorpe via iommu
2022-03-17 18:51 ` Matthew Rosato
2022-03-17 18:51 ` Matthew Rosato
2022-03-14 22:50 ` Alex Williamson
2022-03-14 22:50 ` Alex Williamson
2022-03-14 23:18 ` Jason Gunthorpe
2022-03-14 23:18 ` Jason Gunthorpe via iommu
2022-03-15 7:57 ` Tian, Kevin
2022-03-15 7:57 ` Tian, Kevin
2022-03-15 14:17 ` Matthew Rosato
2022-03-15 14:17 ` Matthew Rosato
2022-03-15 17:01 ` Matthew Rosato
2022-03-15 17:01 ` Matthew Rosato
2022-03-15 13:36 ` Matthew Rosato
2022-03-15 13:36 ` Matthew Rosato
2022-03-15 14:55 ` Jason Gunthorpe
2022-03-15 14:55 ` Jason Gunthorpe via iommu
2022-03-15 16:04 ` Matthew Rosato
2022-03-15 16:04 ` Matthew Rosato
2022-03-15 17:18 ` Jason Gunthorpe
2022-03-15 17:18 ` Jason Gunthorpe via iommu
2022-03-18 7:01 ` Tian, Kevin
2022-03-18 7:01 ` Tian, Kevin
2022-03-18 13:46 ` Jason Gunthorpe
2022-03-18 13:46 ` Jason Gunthorpe via iommu
2022-03-19 7:47 ` Tian, Kevin
2022-03-19 7:47 ` Tian, Kevin
2022-03-14 19:44 ` [PATCH v4 16/32] vfio-pci/zdev: add function handle to clp base capability Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 17/32] KVM: s390: pci: add basic kvm_zdev structure Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 18/32] iommu/s390: add support for IOMMU_DOMAIN_KVM Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 19/32] KVM: s390: pci: do initial setup for AEN interpretation Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 20/32] KVM: s390: pci: enable host forwarding of Adapter Event Notifications Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 21/32] KVM: s390: mechanism to enable guest zPCI Interpretation Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 22/32] KVM: s390: pci: routines for (dis)associating zPCI devices with a KVM Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 21:46 ` Jason Gunthorpe
2022-03-14 21:46 ` Jason Gunthorpe via iommu
2022-03-15 16:39 ` Matthew Rosato
2022-03-15 16:39 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 23/32] KVM: s390: pci: provide routines for enabling/disabling interpretation Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 24/32] KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 25/32] KVM: s390: pci: provide routines for enabling/disabling IOAT assist Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 26/32] KVM: s390: pci: handle refresh of PCI translations Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 27/32] KVM: s390: intercept the rpcit instruction Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 28/32] KVM: s390: add KVM_S390_ZPCI_OP to manage guest zPCI devices Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 29/32] vfio-pci/zdev: add DTSM to clp group capability Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 21:49 ` Jason Gunthorpe [this message]
2022-03-14 21:49 ` Jason Gunthorpe via iommu
2022-03-15 14:39 ` Matthew Rosato
2022-03-15 14:39 ` Matthew Rosato
2022-03-15 14:56 ` Jason Gunthorpe
2022-03-15 14:56 ` Jason Gunthorpe via iommu
2022-03-14 19:44 ` [PATCH v4 30/32] KVM: s390: introduce CPU feature for zPCI Interpretation Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 31/32] MAINTAINERS: additional files related kvm s390 pci passthrough Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:44 ` [PATCH v4 32/32] MAINTAINERS: update s390 IOMMU entry Matthew Rosato
2022-03-14 19:44 ` Matthew Rosato
2022-03-14 19:52 ` [PATCH v4 00/32] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
2022-03-14 19:52 ` Matthew Rosato
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