| Message ID | 20210115121342.15093-1-vivek.gautam@arm.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | iommu/virtio: Nested stage support with Arm | expand |
Hi Vivek, On 1/15/21 1:13 PM, Vivek Gautam wrote: > This patch-series aims at enabling Nested stage translation in guests > using virtio-iommu as the paravirtualized iommu. The backend is supported > with Arm SMMU-v3 that provides nested stage-1 and stage-2 translation. > > This series derives its purpose from various efforts happening to add > support for Shared Virtual Addressing (SVA) in host and guest. On Arm, > most of the support for SVA has already landed. The support for nested > stage translation and fault reporting to guest has been proposed [1]. > The related changes required in VFIO [2] framework have also been put > forward. > > This series proposes changes in virtio-iommu to program PASID tables > and related stage-1 page tables. A simple iommu-pasid-table library > is added for this purpose that interacts with vendor drivers to > allocate and populate PASID tables. > In Arm SMMUv3 we propose to pull the Context Descriptor (CD) management > code out of the arm-smmu-v3 driver and add that as a glue vendor layer > to support allocating CD tables, and populating them with right values. > These CD tables are essentially the PASID tables and contain stage-1 > page table configurations too. > A request to setup these CD tables come from virtio-iommu driver using > the iommu-pasid-table library when running on Arm. The virtio-iommu > then pass these PASID tables to the host using the right virtio backend > and support in VMM. > > For testing we have added necessary support in kvmtool. The changes in > kvmtool are based on virtio-iommu development branch by Jean-Philippe > Brucker [3]. > > The tested kernel branch contains following in the order bottom to top > on the git hash - > a) v5.11-rc3 > b) arm-smmu-v3 [1] and vfio [2] changes from Eric to add nested page > table support for Arm. > c) Smmu test engine patches from Jean-Philippe's branch [4] > d) This series > e) Domain nesting info patches [5][6][7]. > f) Changes to add arm-smmu-v3 specific nesting info (to be sent to > the list). > > This kernel is tested on Neoverse reference software stack with > Fixed virtual platform. Public version of the software stack and > FVP is available here[8][9]. > > A big thanks to Jean-Philippe for his contributions towards this work > and for his valuable guidance. > > [1] https://lore.kernel.org/linux-iommu/20201118112151.25412-1-eric.auger@redhat.com/T/ > [2] https://lore.kernel.org/kvmarm/20201116110030.32335-12-eric.auger@redhat.com/T/ > [3] https://jpbrucker.net/git/kvmtool/log/?h=virtio-iommu/devel > [4] https://jpbrucker.net/git/linux/log/?h=sva/smmute > [5] https://lore.kernel.org/kvm/1599734733-6431-2-git-send-email-yi.l.liu@intel.com/ > [6] https://lore.kernel.org/kvm/1599734733-6431-3-git-send-email-yi.l.liu@intel.com/ > [7] https://lore.kernel.org/kvm/1599734733-6431-4-git-send-email-yi.l.liu@intel.com/ > [8] https://developer.arm.com/tools-and-software/open-source-software/arm-platforms-software/arm-ecosystem-fvps > [9] https://git.linaro.org/landing-teams/working/arm/arm-reference-platforms.git/about/docs/rdn1edge/user-guide.rst Could you share a public branch where we could find all the kernel pieces. Thank you in advance Best Regards Eric > > Jean-Philippe Brucker (6): > iommu/virtio: Add headers for table format probing > iommu/virtio: Add table format probing > iommu/virtio: Add headers for binding pasid table in iommu > iommu/virtio: Add support for INVALIDATE request > iommu/virtio: Attach Arm PASID tables when available > iommu/virtio: Add support for Arm LPAE page table format > > Vivek Gautam (9): > iommu/arm-smmu-v3: Create a Context Descriptor library > iommu: Add a simple PASID table library > iommu/arm-smmu-v3: Update drivers to work with iommu-pasid-table > iommu/arm-smmu-v3: Update CD base address info for user-space > iommu/arm-smmu-v3: Set sync op from consumer driver of cd-lib > iommu: Add asid_bits to arm smmu-v3 stage1 table info > iommu/virtio: Update table format probing header > iommu/virtio: Prepare to add attach pasid table infrastructure > iommu/virtio: Update fault type and reason info for viommu fault > > drivers/iommu/arm/arm-smmu-v3/Makefile | 2 +- > .../arm/arm-smmu-v3/arm-smmu-v3-cd-lib.c | 283 +++++++ > .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 16 +- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 268 +------ > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 4 +- > drivers/iommu/iommu-pasid-table.h | 140 ++++ > drivers/iommu/virtio-iommu.c | 692 +++++++++++++++++- > include/uapi/linux/iommu.h | 2 +- > include/uapi/linux/virtio_iommu.h | 158 +++- > 9 files changed, 1303 insertions(+), 262 deletions(-) > create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-cd-lib.c > create mode 100644 drivers/iommu/iommu-pasid-table.h >
Hi Eric, On 1/19/21 2:33 PM, Auger Eric wrote: > Hi Vivek, > > On 1/15/21 1:13 PM, Vivek Gautam wrote: >> This patch-series aims at enabling Nested stage translation in guests >> using virtio-iommu as the paravirtualized iommu. The backend is supported >> with Arm SMMU-v3 that provides nested stage-1 and stage-2 translation. >> >> This series derives its purpose from various efforts happening to add >> support for Shared Virtual Addressing (SVA) in host and guest. On Arm, >> most of the support for SVA has already landed. The support for nested >> stage translation and fault reporting to guest has been proposed [1]. >> The related changes required in VFIO [2] framework have also been put >> forward. >> >> This series proposes changes in virtio-iommu to program PASID tables >> and related stage-1 page tables. A simple iommu-pasid-table library >> is added for this purpose that interacts with vendor drivers to >> allocate and populate PASID tables. >> In Arm SMMUv3 we propose to pull the Context Descriptor (CD) management >> code out of the arm-smmu-v3 driver and add that as a glue vendor layer >> to support allocating CD tables, and populating them with right values. >> These CD tables are essentially the PASID tables and contain stage-1 >> page table configurations too. >> A request to setup these CD tables come from virtio-iommu driver using >> the iommu-pasid-table library when running on Arm. The virtio-iommu >> then pass these PASID tables to the host using the right virtio backend >> and support in VMM. >> >> For testing we have added necessary support in kvmtool. The changes in >> kvmtool are based on virtio-iommu development branch by Jean-Philippe >> Brucker [3]. >> >> The tested kernel branch contains following in the order bottom to top >> on the git hash - >> a) v5.11-rc3 >> b) arm-smmu-v3 [1] and vfio [2] changes from Eric to add nested page >> table support for Arm. >> c) Smmu test engine patches from Jean-Philippe's branch [4] >> d) This series >> e) Domain nesting info patches [5][6][7]. >> f) Changes to add arm-smmu-v3 specific nesting info (to be sent to >> the list). >> >> This kernel is tested on Neoverse reference software stack with >> Fixed virtual platform. Public version of the software stack and >> FVP is available here[8][9]. >> >> A big thanks to Jean-Philippe for his contributions towards this work >> and for his valuable guidance. >> >> [1] https://lore.kernel.org/linux-iommu/20201118112151.25412-1-eric.auger@redhat.com/T/ >> [2] https://lore.kernel.org/kvmarm/20201116110030.32335-12-eric.auger@redhat.com/T/ >> [3] https://jpbrucker.net/git/kvmtool/log/?h=virtio-iommu/devel >> [4] https://jpbrucker.net/git/linux/log/?h=sva/smmute >> [5] https://lore.kernel.org/kvm/1599734733-6431-2-git-send-email-yi.l.liu@intel.com/ >> [6] https://lore.kernel.org/kvm/1599734733-6431-3-git-send-email-yi.l.liu@intel.com/ >> [7] https://lore.kernel.org/kvm/1599734733-6431-4-git-send-email-yi.l.liu@intel.com/ >> [8] https://developer.arm.com/tools-and-software/open-source-software/arm-platforms-software/arm-ecosystem-fvps >> [9] https://git.linaro.org/landing-teams/working/arm/arm-reference-platforms.git/about/docs/rdn1edge/user-guide.rst > > Could you share a public branch where we could find all the kernel pieces. > > Thank you in advance Apologies for the delay. It took a bit of time to sort things out for a public branch. The branch is available in my github now. Please have a look. https://github.com/vivek-arm/linux/tree/5.11-rc3-nested-pgtbl-arm-smmuv3-virtio-iommu Thanks and regards Vivek > > Best Regards > > Eric >> >> Jean-Philippe Brucker (6): >> iommu/virtio: Add headers for table format probing >> iommu/virtio: Add table format probing >> iommu/virtio: Add headers for binding pasid table in iommu >> iommu/virtio: Add support for INVALIDATE request >> iommu/virtio: Attach Arm PASID tables when available >> iommu/virtio: Add support for Arm LPAE page table format >> >> Vivek Gautam (9): >> iommu/arm-smmu-v3: Create a Context Descriptor library >> iommu: Add a simple PASID table library >> iommu/arm-smmu-v3: Update drivers to work with iommu-pasid-table >> iommu/arm-smmu-v3: Update CD base address info for user-space >> iommu/arm-smmu-v3: Set sync op from consumer driver of cd-lib >> iommu: Add asid_bits to arm smmu-v3 stage1 table info >> iommu/virtio: Update table format probing header >> iommu/virtio: Prepare to add attach pasid table infrastructure >> iommu/virtio: Update fault type and reason info for viommu fault >> >> drivers/iommu/arm/arm-smmu-v3/Makefile | 2 +- >> .../arm/arm-smmu-v3/arm-smmu-v3-cd-lib.c | 283 +++++++ >> .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 16 +- >> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 268 +------ >> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 4 +- >> drivers/iommu/iommu-pasid-table.h | 140 ++++ >> drivers/iommu/virtio-iommu.c | 692 +++++++++++++++++- >> include/uapi/linux/iommu.h | 2 +- >> include/uapi/linux/virtio_iommu.h | 158 +++- >> 9 files changed, 1303 insertions(+), 262 deletions(-) >> create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-cd-lib.c >> create mode 100644 drivers/iommu/iommu-pasid-table.h >> >
Hi Vivek, > -----Original Message----- > From: Vivek Kumar Gautam [mailto:vivek.gautam@arm.com] > Sent: 21 January 2021 17:34 > To: Auger Eric <eric.auger@redhat.com>; linux-kernel@vger.kernel.org; > linux-arm-kernel@lists.infradead.org; iommu@lists.linux-foundation.org; > virtualization@lists.linux-foundation.org > Cc: joro@8bytes.org; will.deacon@arm.com; mst@redhat.com; > robin.murphy@arm.com; jean-philippe@linaro.org; > alex.williamson@redhat.com; kevin.tian@intel.com; > jacob.jun.pan@linux.intel.com; yi.l.liu@intel.com; lorenzo.pieralisi@arm.com; > Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> > Subject: Re: [PATCH RFC v1 00/15] iommu/virtio: Nested stage support with > Arm > > Hi Eric, > > > On 1/19/21 2:33 PM, Auger Eric wrote: > > Hi Vivek, > > > > On 1/15/21 1:13 PM, Vivek Gautam wrote: > >> This patch-series aims at enabling Nested stage translation in guests > >> using virtio-iommu as the paravirtualized iommu. The backend is > >> supported with Arm SMMU-v3 that provides nested stage-1 and stage-2 > translation. > >> > >> This series derives its purpose from various efforts happening to add > >> support for Shared Virtual Addressing (SVA) in host and guest. On > >> Arm, most of the support for SVA has already landed. The support for > >> nested stage translation and fault reporting to guest has been proposed [1]. > >> The related changes required in VFIO [2] framework have also been put > >> forward. > >> > >> This series proposes changes in virtio-iommu to program PASID tables > >> and related stage-1 page tables. A simple iommu-pasid-table library > >> is added for this purpose that interacts with vendor drivers to > >> allocate and populate PASID tables. > >> In Arm SMMUv3 we propose to pull the Context Descriptor (CD) > >> management code out of the arm-smmu-v3 driver and add that as a glue > >> vendor layer to support allocating CD tables, and populating them with right > values. > >> These CD tables are essentially the PASID tables and contain stage-1 > >> page table configurations too. > >> A request to setup these CD tables come from virtio-iommu driver > >> using the iommu-pasid-table library when running on Arm. The > >> virtio-iommu then pass these PASID tables to the host using the right > >> virtio backend and support in VMM. > >> > >> For testing we have added necessary support in kvmtool. The changes > >> in kvmtool are based on virtio-iommu development branch by > >> Jean-Philippe Brucker [3]. > >> > >> The tested kernel branch contains following in the order bottom to > >> top on the git hash - > >> a) v5.11-rc3 > >> b) arm-smmu-v3 [1] and vfio [2] changes from Eric to add nested page > >> table support for Arm. > >> c) Smmu test engine patches from Jean-Philippe's branch [4] > >> d) This series > >> e) Domain nesting info patches [5][6][7]. > >> f) Changes to add arm-smmu-v3 specific nesting info (to be sent to > >> the list). > >> > >> This kernel is tested on Neoverse reference software stack with Fixed > >> virtual platform. Public version of the software stack and FVP is > >> available here[8][9]. > >> > >> A big thanks to Jean-Philippe for his contributions towards this work > >> and for his valuable guidance. > >> > >> [1] > >> https://lore.kernel.org/linux-iommu/20201118112151.25412-1-eric.auger > >> @redhat.com/T/ [2] > >> > https://lore.kernel.org/kvmarm/20201116110030.32335-12-eric.auger@red > >> hat.com/T/ [3] > >> https://jpbrucker.net/git/kvmtool/log/?h=virtio-iommu/devel > >> [4] https://jpbrucker.net/git/linux/log/?h=sva/smmute > >> [5] > >> https://lore.kernel.org/kvm/1599734733-6431-2-git-send-email-yi.l.liu > >> @intel.com/ [6] > >> https://lore.kernel.org/kvm/1599734733-6431-3-git-send-email-yi.l.liu > >> @intel.com/ [7] > >> https://lore.kernel.org/kvm/1599734733-6431-4-git-send-email-yi.l.liu > >> @intel.com/ [8] > >> https://developer.arm.com/tools-and-software/open-source-software/arm > >> -platforms-software/arm-ecosystem-fvps > >> [9] > >> https://git.linaro.org/landing-teams/working/arm/arm-reference-platfo > >> rms.git/about/docs/rdn1edge/user-guide.rst > > > > Could you share a public branch where we could find all the kernel pieces. > > > > Thank you in advance > > Apologies for the delay. It took a bit of time to sort things out for a public > branch. > The branch is available in my github now. Please have a look. > > https://github.com/vivek-arm/linux/tree/5.11-rc3-nested-pgtbl-arm-smmuv3-vi > rtio-iommu Thanks for this. Do you have a corresponding kvmtool branch mentioned above as public? Thanks, Shameer
Hi Vivek, On 1/21/21 6:34 PM, Vivek Kumar Gautam wrote: > Hi Eric, > > > On 1/19/21 2:33 PM, Auger Eric wrote: >> Hi Vivek, >> >> On 1/15/21 1:13 PM, Vivek Gautam wrote: >>> This patch-series aims at enabling Nested stage translation in guests >>> using virtio-iommu as the paravirtualized iommu. The backend is >>> supported >>> with Arm SMMU-v3 that provides nested stage-1 and stage-2 translation. >>> >>> This series derives its purpose from various efforts happening to add >>> support for Shared Virtual Addressing (SVA) in host and guest. On Arm, >>> most of the support for SVA has already landed. The support for nested >>> stage translation and fault reporting to guest has been proposed [1]. >>> The related changes required in VFIO [2] framework have also been put >>> forward. >>> >>> This series proposes changes in virtio-iommu to program PASID tables >>> and related stage-1 page tables. A simple iommu-pasid-table library >>> is added for this purpose that interacts with vendor drivers to >>> allocate and populate PASID tables. >>> In Arm SMMUv3 we propose to pull the Context Descriptor (CD) management >>> code out of the arm-smmu-v3 driver and add that as a glue vendor layer >>> to support allocating CD tables, and populating them with right values. >>> These CD tables are essentially the PASID tables and contain stage-1 >>> page table configurations too. >>> A request to setup these CD tables come from virtio-iommu driver using >>> the iommu-pasid-table library when running on Arm. The virtio-iommu >>> then pass these PASID tables to the host using the right virtio backend >>> and support in VMM. >>> >>> For testing we have added necessary support in kvmtool. The changes in >>> kvmtool are based on virtio-iommu development branch by Jean-Philippe >>> Brucker [3]. >>> >>> The tested kernel branch contains following in the order bottom to top >>> on the git hash - >>> a) v5.11-rc3 >>> b) arm-smmu-v3 [1] and vfio [2] changes from Eric to add nested page >>> table support for Arm. >>> c) Smmu test engine patches from Jean-Philippe's branch [4] >>> d) This series >>> e) Domain nesting info patches [5][6][7]. >>> f) Changes to add arm-smmu-v3 specific nesting info (to be sent to >>> the list). >>> >>> This kernel is tested on Neoverse reference software stack with >>> Fixed virtual platform. Public version of the software stack and >>> FVP is available here[8][9]. >>> >>> A big thanks to Jean-Philippe for his contributions towards this work >>> and for his valuable guidance. >>> >>> [1] >>> https://lore.kernel.org/linux-iommu/20201118112151.25412-1-eric.auger@redhat.com/T/ >>> >>> [2] >>> https://lore.kernel.org/kvmarm/20201116110030.32335-12-eric.auger@redhat.com/T/ >>> >>> [3] https://jpbrucker.net/git/kvmtool/log/?h=virtio-iommu/devel >>> [4] https://jpbrucker.net/git/linux/log/?h=sva/smmute >>> [5] >>> https://lore.kernel.org/kvm/1599734733-6431-2-git-send-email-yi.l.liu@intel.com/ >>> >>> [6] >>> https://lore.kernel.org/kvm/1599734733-6431-3-git-send-email-yi.l.liu@intel.com/ >>> >>> [7] >>> https://lore.kernel.org/kvm/1599734733-6431-4-git-send-email-yi.l.liu@intel.com/ >>> >>> [8] >>> https://developer.arm.com/tools-and-software/open-source-software/arm-platforms-software/arm-ecosystem-fvps >>> >>> [9] >>> https://git.linaro.org/landing-teams/working/arm/arm-reference-platforms.git/about/docs/rdn1edge/user-guide.rst >>> >> >> Could you share a public branch where we could find all the kernel >> pieces. >> >> Thank you in advance > > Apologies for the delay. It took a bit of time to sort things out for a > public branch. > The branch is available in my github now. Please have a look. > > https://github.com/vivek-arm/linux/tree/5.11-rc3-nested-pgtbl-arm-smmuv3-virtio-iommu no problem. Thank you for the link. Best Regards Eric > > > > Thanks and regards > Vivek > >> >> Best Regards >> >> Eric >>> >>> Jean-Philippe Brucker (6): >>> iommu/virtio: Add headers for table format probing >>> iommu/virtio: Add table format probing >>> iommu/virtio: Add headers for binding pasid table in iommu >>> iommu/virtio: Add support for INVALIDATE request >>> iommu/virtio: Attach Arm PASID tables when available >>> iommu/virtio: Add support for Arm LPAE page table format >>> >>> Vivek Gautam (9): >>> iommu/arm-smmu-v3: Create a Context Descriptor library >>> iommu: Add a simple PASID table library >>> iommu/arm-smmu-v3: Update drivers to work with iommu-pasid-table >>> iommu/arm-smmu-v3: Update CD base address info for user-space >>> iommu/arm-smmu-v3: Set sync op from consumer driver of cd-lib >>> iommu: Add asid_bits to arm smmu-v3 stage1 table info >>> iommu/virtio: Update table format probing header >>> iommu/virtio: Prepare to add attach pasid table infrastructure >>> iommu/virtio: Update fault type and reason info for viommu fault >>> >>> drivers/iommu/arm/arm-smmu-v3/Makefile | 2 +- >>> .../arm/arm-smmu-v3/arm-smmu-v3-cd-lib.c | 283 +++++++ >>> .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 16 +- >>> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 268 +------ >>> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 4 +- >>> drivers/iommu/iommu-pasid-table.h | 140 ++++ >>> drivers/iommu/virtio-iommu.c | 692 +++++++++++++++++- >>> include/uapi/linux/iommu.h | 2 +- >>> include/uapi/linux/virtio_iommu.h | 158 +++- >>> 9 files changed, 1303 insertions(+), 262 deletions(-) >>> create mode 100644 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-cd-lib.c >>> create mode 100644 drivers/iommu/iommu-pasid-table.h >>> >> > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >
Hi Shameer, On 1/22/21 9:19 PM, Shameerali Kolothum Thodi wrote: > Hi Vivek, > >> -----Original Message----- >> From: Vivek Kumar Gautam [mailto:vivek.gautam@arm.com] >> Sent: 21 January 2021 17:34 >> To: Auger Eric <eric.auger@redhat.com>; linux-kernel@vger.kernel.org; >> linux-arm-kernel@lists.infradead.org; iommu@lists.linux-foundation.org; >> virtualization@lists.linux-foundation.org >> Cc: joro@8bytes.org; will.deacon@arm.com; mst@redhat.com; >> robin.murphy@arm.com; jean-philippe@linaro.org; >> alex.williamson@redhat.com; kevin.tian@intel.com; >> jacob.jun.pan@linux.intel.com; yi.l.liu@intel.com; lorenzo.pieralisi@arm.com; >> Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> >> Subject: Re: [PATCH RFC v1 00/15] iommu/virtio: Nested stage support with >> Arm >> >> Hi Eric, >> >> >> On 1/19/21 2:33 PM, Auger Eric wrote: >>> Hi Vivek, >>> >>> On 1/15/21 1:13 PM, Vivek Gautam wrote: >>>> This patch-series aims at enabling Nested stage translation in guests >>>> using virtio-iommu as the paravirtualized iommu. The backend is >>>> supported with Arm SMMU-v3 that provides nested stage-1 and stage-2 >> translation. >>>> >>>> This series derives its purpose from various efforts happening to add >>>> support for Shared Virtual Addressing (SVA) in host and guest. On >>>> Arm, most of the support for SVA has already landed. The support for >>>> nested stage translation and fault reporting to guest has been proposed [1]. >>>> The related changes required in VFIO [2] framework have also been put >>>> forward. >>>> >>>> This series proposes changes in virtio-iommu to program PASID tables >>>> and related stage-1 page tables. A simple iommu-pasid-table library >>>> is added for this purpose that interacts with vendor drivers to >>>> allocate and populate PASID tables. >>>> In Arm SMMUv3 we propose to pull the Context Descriptor (CD) >>>> management code out of the arm-smmu-v3 driver and add that as a glue >>>> vendor layer to support allocating CD tables, and populating them with right >> values. >>>> These CD tables are essentially the PASID tables and contain stage-1 >>>> page table configurations too. >>>> A request to setup these CD tables come from virtio-iommu driver >>>> using the iommu-pasid-table library when running on Arm. The >>>> virtio-iommu then pass these PASID tables to the host using the right >>>> virtio backend and support in VMM. >>>> >>>> For testing we have added necessary support in kvmtool. The changes >>>> in kvmtool are based on virtio-iommu development branch by >>>> Jean-Philippe Brucker [3]. >>>> >>>> The tested kernel branch contains following in the order bottom to >>>> top on the git hash - >>>> a) v5.11-rc3 >>>> b) arm-smmu-v3 [1] and vfio [2] changes from Eric to add nested page >>>> table support for Arm. >>>> c) Smmu test engine patches from Jean-Philippe's branch [4] >>>> d) This series >>>> e) Domain nesting info patches [5][6][7]. >>>> f) Changes to add arm-smmu-v3 specific nesting info (to be sent to >>>> the list). >>>> >>>> This kernel is tested on Neoverse reference software stack with Fixed >>>> virtual platform. Public version of the software stack and FVP is >>>> available here[8][9]. >>>> >>>> A big thanks to Jean-Philippe for his contributions towards this work >>>> and for his valuable guidance. >>>> >>>> [1] >>>> https://lore.kernel.org/linux-iommu/20201118112151.25412-1-eric.auger >>>> @redhat.com/T/ [2] >>>> >> https://lore.kernel.org/kvmarm/20201116110030.32335-12-eric.auger@red >>>> hat.com/T/ [3] >>>> https://jpbrucker.net/git/kvmtool/log/?h=virtio-iommu/devel >>>> [4] https://jpbrucker.net/git/linux/log/?h=sva/smmute >>>> [5] >>>> https://lore.kernel.org/kvm/1599734733-6431-2-git-send-email-yi.l.liu >>>> @intel.com/ [6] >>>> https://lore.kernel.org/kvm/1599734733-6431-3-git-send-email-yi.l.liu >>>> @intel.com/ [7] >>>> https://lore.kernel.org/kvm/1599734733-6431-4-git-send-email-yi.l.liu >>>> @intel.com/ [8] >>>> https://developer.arm.com/tools-and-software/open-source-software/arm >>>> -platforms-software/arm-ecosystem-fvps >>>> [9] >>>> https://git.linaro.org/landing-teams/working/arm/arm-reference-platfo >>>> rms.git/about/docs/rdn1edge/user-guide.rst >>> >>> Could you share a public branch where we could find all the kernel pieces. >>> >>> Thank you in advance >> >> Apologies for the delay. It took a bit of time to sort things out for a public >> branch. >> The branch is available in my github now. Please have a look. >> >> https://github.com/vivek-arm/linux/tree/5.11-rc3-nested-pgtbl-arm-smmuv3-vi >> rtio-iommu > > Thanks for this. Do you have a corresponding kvmtool branch mentioned above as public? Thanks for showing interest. I will publish the kvmtool branch asap. Though the current development is based on Jean's branch for virtio-iommu [1], I plan to rebase the changes to master soon. Thanks & regards Vivek [1] https://jpbrucker.net/git/kvmtool/log/?h=virtio-iommu/devel > > Thanks, > Shameer >