* [GIT PULL] KVM/arm64 updates for 6.12
@ 2024-09-12 9:12 Marc Zyngier
2024-09-14 13:33 ` Paolo Bonzini
0 siblings, 1 reply; 2+ messages in thread
From: Marc Zyngier @ 2024-09-12 9:12 UTC (permalink / raw)
To: Paolo Bonzini
Cc: Alexandru Elisei, Anshuman Khandual, Catalin Marinas,
Colton Lewis, Fuad Tabba, Joey Gouly, Mark Brown, Oliver Upton,
Ricardo Koller, Sean Christopherson, Sebastian Ene,
Snehal Koukuntla, Steven Price, Vincent Donnefort, Will Deacon,
James Morse, Suzuki K Poulose, Zenghui Yu, kvmarm,
linux-arm-kernel, kvm
Hi Paolo,
Here's the set of KVM/arm64 changes 6.12. The only two user-visible
features are FP8 support and the new Stage-2 page-table dumper. The NV
onslaught continues with the addition of the address translation
instruction emulation, and we have a bunch of fixes all over the
place (details in the tag text below).
Note that there is a very minor conflict with arm64 in -next, which is
trivially resolved as [1].
Please pull,
M.
[1] https://lore.kernel.org/linux-next/20240905160856.14e95d14@canb.auug.org.au
The following changes since commit 5be63fc19fcaa4c236b307420483578a56986a37:
Linux 6.11-rc5 (2024-08-25 19:07:11 +1200)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-6.12
for you to fetch changes up to 17a0005644994087794f6552d7a5e105d6976184:
Merge branch kvm-arm64/visibility-cleanups into kvmarm-master/next (2024-09-12 08:38:17 +0100)
----------------------------------------------------------------
KVM/arm64 updates for 6.12
* New features:
- Add a Stage-2 page table dumper, reusing the main ptdump
infrastructure, and allowing easier debugging of the our
page-table infrastructure
- Add FP8 support to the KVM/arm64 floating point handling.
- Add NV support for the AT family of instructions, which mostly
results in adding a page table walker that deals with most of the
complexity of the architecture.
* Improvements, fixes and cleanups:
- Add selftest checks for a bunch of timer emulation corner cases
- Fix the multiple of cases where KVM/arm64 doesn't correctly handle
the guest trying to use a GICv3 that isn't advertised
- Remove REG_HIDDEN_USER from the sysreg infrastructure, making
things little more simple
- Prevent MTE tags being restored by userspace if we are actively
logging writes, as that's a recipe for disaster
- Correct the refcount on a page that is not considered for MTE tag
copying (such as a device)
- Relax the synchronisation when walking a page table to split block
mappings, moving it at the end the walk, as there is no need to
perform it on every store.
- Fix boundary check when transfering memory using FFA
- Fix pKVM TLB invalidation, only affecting currently out of tree
code but worth addressing for peace of mind
----------------------------------------------------------------
Colton Lewis (3):
KVM: arm64: Move data barrier to end of split walk
KVM: arm64: selftests: Ensure pending interrupts are handled in arch_timer test
KVM: arm64: selftests: Add arch_timer_edge_cases selftest
Joey Gouly (1):
KVM: arm64: Make kvm_at() take an OP_AT_*
Marc Zyngier (47):
KVM: arm64: Move SVCR into the sysreg array
KVM: arm64: Add predicate for FPMR support in a VM
KVM: arm64: Move FPMR into the sysreg array
KVM: arm64: Add save/restore support for FPMR
KVM: arm64: Honor trap routing for FPMR
KVM: arm64: Expose ID_AA64FPFR0_EL1 as a writable ID reg
KVM: arm64: Enable FP8 support when available and configured
KVM: arm64: Expose ID_AA64PFR2_EL1 to userspace and guests
Merge branch kvm-arm64/tlbi-fixes-6.12 into kvmarm-master/next
KVM: arm64: Move GICv3 trap configuration to kvm_calculate_traps()
KVM: arm64: Force SRE traps when SRE access is not enabled
KVM: arm64: Force GICv3 trap activation when no irqchip is configured on VHE
KVM: arm64: Add helper for last ditch idreg adjustments
KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is presented to the guest
KVM: arm64: Add ICH_HCR_EL2 to the vcpu state
KVM: arm64: Add trap routing information for ICH_HCR_EL2
KVM: arm64: Honor guest requested traps in GICv3 emulation
KVM: arm64: Make most GICv3 accesses UNDEF if they trap
KVM: arm64: Unify UNDEF injection helpers
KVM: arm64: Add selftest checking how the absence of GICv3 is handled
arm64: Add missing APTable and TCR_ELx.HPD masks
arm64: Add PAR_EL1 field description
arm64: Add system register encoding for PSTATE.PAN
arm64: Add ESR_ELx_FSC_ADDRSZ_L() helper
KVM: arm64: nv: Enforce S2 alignment when contiguous bit is set
KVM: arm64: nv: Turn upper_attr for S2 walk into the full descriptor
KVM: arm64: nv: Honor absence of FEAT_PAN2
KVM: arm64: nv: Add basic emulation of AT S1E{0,1}{R,W}
KVM: arm64: nv: Add basic emulation of AT S1E1{R,W}P
KVM: arm64: nv: Add basic emulation of AT S1E2{R,W}
KVM: arm64: nv: Add emulation of AT S12E{0,1}{R,W}
KVM: arm64: nv: Make ps_to_output_size() generally available
KVM: arm64: nv: Add SW walker for AT S1 emulation
KVM: arm64: nv: Sanitise SCTLR_EL1.EPAN according to VM configuration
KVM: arm64: nv: Make AT+PAN instructions aware of FEAT_PAN3
KVM: arm64: nv: Plumb handling of AT S1* traps from EL2
KVM: arm64: nv: Add support for FEAT_ATS1A
KVM: arm64: Simplify handling of CNTKCTL_EL12
KVM: arm64: Simplify visibility handling of AArch32 SPSR_*
KVM: arm64: Get rid of REG_HIDDEN_USER visibility qualifier
Merge branch kvm-arm64/mmu-misc-6.12 into kvmarm-master/next
Merge branch kvm-arm64/fpmr into kvmarm-master/next
Merge branch kvm-arm64/vgic-sre-traps into kvmarm-master/next
Merge branch kvm-arm64/selftests-6.12 into kvmarm-master/next
Merge branch kvm-arm64/nv-at-pan into kvmarm-master/next
Merge branch kvm-arm64/s2-ptdump into kvmarm-master/next
Merge branch kvm-arm64/visibility-cleanups into kvmarm-master/next
Oliver Upton (1):
KVM: arm64: selftests: Cope with lack of GICv3 in set_id_regs
Sean Christopherson (2):
KVM: arm64: Release pfn, i.e. put page, if copying MTE tags hits ZONE_DEVICE
KVM: arm64: Disallow copying MTE to guest memory while KVM is dirty logging
Sebastian Ene (5):
KVM: arm64: Move pagetable definitions to common header
arm64: ptdump: Expose the attribute parsing functionality
arm64: ptdump: Use the ptdump description from a local context
arm64: ptdump: Don't override the level when operating on the stage-2 tables
KVM: arm64: Register ptdump with debugfs on guest creation
Snehal Koukuntla (1):
KVM: arm64: Add memory length checks and remove inline in do_ffa_mem_xfer
Will Deacon (2):
KVM: arm64: Invalidate EL1&0 TLB entries for all VMIDs in nvhe hyp init
KVM: arm64: Ensure TLBI uses correct VMID after changing context
arch/arm64/include/asm/esr.h | 5 +-
arch/arm64/include/asm/kvm_arm.h | 1 +
arch/arm64/include/asm/kvm_asm.h | 6 +-
arch/arm64/include/asm/kvm_host.h | 22 +-
arch/arm64/include/asm/kvm_mmu.h | 6 +
arch/arm64/include/asm/kvm_nested.h | 40 +-
arch/arm64/include/asm/kvm_pgtable.h | 42 +
arch/arm64/include/asm/pgtable-hwdef.h | 9 +
arch/arm64/include/asm/ptdump.h | 43 +-
arch/arm64/include/asm/sysreg.h | 22 +
arch/arm64/kvm/Kconfig | 17 +
arch/arm64/kvm/Makefile | 3 +-
arch/arm64/kvm/arm.c | 15 +-
arch/arm64/kvm/at.c | 1101 ++++++++++++++++++++
arch/arm64/kvm/emulate-nested.c | 81 +-
arch/arm64/kvm/fpsimd.c | 5 +-
arch/arm64/kvm/guest.c | 6 +
arch/arm64/kvm/hyp/include/hyp/fault.h | 2 +-
arch/arm64/kvm/hyp/include/hyp/switch.h | 3 +
arch/arm64/kvm/hyp/nvhe/ffa.c | 21 +-
arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +-
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 9 +
arch/arm64/kvm/hyp/nvhe/switch.c | 9 +
arch/arm64/kvm/hyp/nvhe/tlb.c | 6 +-
arch/arm64/kvm/hyp/pgtable.c | 48 +-
arch/arm64/kvm/hyp/vgic-v3-sr.c | 97 +-
arch/arm64/kvm/hyp/vhe/switch.c | 3 +
arch/arm64/kvm/nested.c | 55 +-
arch/arm64/kvm/ptdump.c | 268 +++++
arch/arm64/kvm/sys_regs.c | 386 ++++---
arch/arm64/kvm/sys_regs.h | 23 +-
arch/arm64/kvm/vgic/vgic-v3.c | 12 +
arch/arm64/kvm/vgic/vgic.c | 14 +-
arch/arm64/kvm/vgic/vgic.h | 6 +-
arch/arm64/mm/ptdump.c | 70 +-
tools/testing/selftests/kvm/Makefile | 2 +
.../selftests/kvm/aarch64/arch_timer_edge_cases.c | 1062 +++++++++++++++++++
tools/testing/selftests/kvm/aarch64/no-vgic-v3.c | 175 ++++
tools/testing/selftests/kvm/aarch64/set_id_regs.c | 1 +
tools/testing/selftests/kvm/aarch64/vgic_irq.c | 11 +-
.../selftests/kvm/include/aarch64/arch_timer.h | 18 +-
.../selftests/kvm/include/aarch64/processor.h | 3 +
.../testing/selftests/kvm/lib/aarch64/processor.c | 6 +
43 files changed, 3405 insertions(+), 331 deletions(-)
create mode 100644 arch/arm64/kvm/at.c
create mode 100644 arch/arm64/kvm/ptdump.c
create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer_edge_cases.c
create mode 100644 tools/testing/selftests/kvm/aarch64/no-vgic-v3.c
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [GIT PULL] KVM/arm64 updates for 6.12
2024-09-12 9:12 [GIT PULL] KVM/arm64 updates for 6.12 Marc Zyngier
@ 2024-09-14 13:33 ` Paolo Bonzini
0 siblings, 0 replies; 2+ messages in thread
From: Paolo Bonzini @ 2024-09-14 13:33 UTC (permalink / raw)
To: Marc Zyngier
Cc: Alexandru Elisei, Anshuman Khandual, Catalin Marinas,
Colton Lewis, Fuad Tabba, Joey Gouly, Mark Brown, Oliver Upton,
Ricardo Koller, Sean Christopherson, Sebastian Ene,
Snehal Koukuntla, Steven Price, Vincent Donnefort, Will Deacon,
James Morse, Suzuki K Poulose, Zenghui Yu, kvmarm,
linux-arm-kernel, kvm
On Thu, Sep 12, 2024 at 11:12 AM Marc Zyngier <maz@kernel.org> wrote:
>
> Hi Paolo,
>
> Here's the set of KVM/arm64 changes 6.12. The only two user-visible
> features are FP8 support and the new Stage-2 page-table dumper. The NV
> onslaught continues with the addition of the address translation
> instruction emulation, and we have a bunch of fixes all over the
> place (details in the tag text below).
>
> Note that there is a very minor conflict with arm64 in -next, which is
> trivially resolved as [1].
Pulled, thanks.
Paolo
> Please pull,
>
> M.
>
> [1] https://lore.kernel.org/linux-next/20240905160856.14e95d14@canb.auug.org.au
>
> The following changes since commit 5be63fc19fcaa4c236b307420483578a56986a37:
>
> Linux 6.11-rc5 (2024-08-25 19:07:11 +1200)
>
> are available in the Git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-6.12
>
> for you to fetch changes up to 17a0005644994087794f6552d7a5e105d6976184:
>
> Merge branch kvm-arm64/visibility-cleanups into kvmarm-master/next (2024-09-12 08:38:17 +0100)
>
> ----------------------------------------------------------------
> KVM/arm64 updates for 6.12
>
> * New features:
>
> - Add a Stage-2 page table dumper, reusing the main ptdump
> infrastructure, and allowing easier debugging of the our
> page-table infrastructure
>
> - Add FP8 support to the KVM/arm64 floating point handling.
>
> - Add NV support for the AT family of instructions, which mostly
> results in adding a page table walker that deals with most of the
> complexity of the architecture.
>
> * Improvements, fixes and cleanups:
>
> - Add selftest checks for a bunch of timer emulation corner cases
>
> - Fix the multiple of cases where KVM/arm64 doesn't correctly handle
> the guest trying to use a GICv3 that isn't advertised
>
> - Remove REG_HIDDEN_USER from the sysreg infrastructure, making
> things little more simple
>
> - Prevent MTE tags being restored by userspace if we are actively
> logging writes, as that's a recipe for disaster
>
> - Correct the refcount on a page that is not considered for MTE tag
> copying (such as a device)
>
> - Relax the synchronisation when walking a page table to split block
> mappings, moving it at the end the walk, as there is no need to
> perform it on every store.
>
> - Fix boundary check when transfering memory using FFA
>
> - Fix pKVM TLB invalidation, only affecting currently out of tree
> code but worth addressing for peace of mind
>
> ----------------------------------------------------------------
> Colton Lewis (3):
> KVM: arm64: Move data barrier to end of split walk
> KVM: arm64: selftests: Ensure pending interrupts are handled in arch_timer test
> KVM: arm64: selftests: Add arch_timer_edge_cases selftest
>
> Joey Gouly (1):
> KVM: arm64: Make kvm_at() take an OP_AT_*
>
> Marc Zyngier (47):
> KVM: arm64: Move SVCR into the sysreg array
> KVM: arm64: Add predicate for FPMR support in a VM
> KVM: arm64: Move FPMR into the sysreg array
> KVM: arm64: Add save/restore support for FPMR
> KVM: arm64: Honor trap routing for FPMR
> KVM: arm64: Expose ID_AA64FPFR0_EL1 as a writable ID reg
> KVM: arm64: Enable FP8 support when available and configured
> KVM: arm64: Expose ID_AA64PFR2_EL1 to userspace and guests
> Merge branch kvm-arm64/tlbi-fixes-6.12 into kvmarm-master/next
> KVM: arm64: Move GICv3 trap configuration to kvm_calculate_traps()
> KVM: arm64: Force SRE traps when SRE access is not enabled
> KVM: arm64: Force GICv3 trap activation when no irqchip is configured on VHE
> KVM: arm64: Add helper for last ditch idreg adjustments
> KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is presented to the guest
> KVM: arm64: Add ICH_HCR_EL2 to the vcpu state
> KVM: arm64: Add trap routing information for ICH_HCR_EL2
> KVM: arm64: Honor guest requested traps in GICv3 emulation
> KVM: arm64: Make most GICv3 accesses UNDEF if they trap
> KVM: arm64: Unify UNDEF injection helpers
> KVM: arm64: Add selftest checking how the absence of GICv3 is handled
> arm64: Add missing APTable and TCR_ELx.HPD masks
> arm64: Add PAR_EL1 field description
> arm64: Add system register encoding for PSTATE.PAN
> arm64: Add ESR_ELx_FSC_ADDRSZ_L() helper
> KVM: arm64: nv: Enforce S2 alignment when contiguous bit is set
> KVM: arm64: nv: Turn upper_attr for S2 walk into the full descriptor
> KVM: arm64: nv: Honor absence of FEAT_PAN2
> KVM: arm64: nv: Add basic emulation of AT S1E{0,1}{R,W}
> KVM: arm64: nv: Add basic emulation of AT S1E1{R,W}P
> KVM: arm64: nv: Add basic emulation of AT S1E2{R,W}
> KVM: arm64: nv: Add emulation of AT S12E{0,1}{R,W}
> KVM: arm64: nv: Make ps_to_output_size() generally available
> KVM: arm64: nv: Add SW walker for AT S1 emulation
> KVM: arm64: nv: Sanitise SCTLR_EL1.EPAN according to VM configuration
> KVM: arm64: nv: Make AT+PAN instructions aware of FEAT_PAN3
> KVM: arm64: nv: Plumb handling of AT S1* traps from EL2
> KVM: arm64: nv: Add support for FEAT_ATS1A
> KVM: arm64: Simplify handling of CNTKCTL_EL12
> KVM: arm64: Simplify visibility handling of AArch32 SPSR_*
> KVM: arm64: Get rid of REG_HIDDEN_USER visibility qualifier
> Merge branch kvm-arm64/mmu-misc-6.12 into kvmarm-master/next
> Merge branch kvm-arm64/fpmr into kvmarm-master/next
> Merge branch kvm-arm64/vgic-sre-traps into kvmarm-master/next
> Merge branch kvm-arm64/selftests-6.12 into kvmarm-master/next
> Merge branch kvm-arm64/nv-at-pan into kvmarm-master/next
> Merge branch kvm-arm64/s2-ptdump into kvmarm-master/next
> Merge branch kvm-arm64/visibility-cleanups into kvmarm-master/next
>
> Oliver Upton (1):
> KVM: arm64: selftests: Cope with lack of GICv3 in set_id_regs
>
> Sean Christopherson (2):
> KVM: arm64: Release pfn, i.e. put page, if copying MTE tags hits ZONE_DEVICE
> KVM: arm64: Disallow copying MTE to guest memory while KVM is dirty logging
>
> Sebastian Ene (5):
> KVM: arm64: Move pagetable definitions to common header
> arm64: ptdump: Expose the attribute parsing functionality
> arm64: ptdump: Use the ptdump description from a local context
> arm64: ptdump: Don't override the level when operating on the stage-2 tables
> KVM: arm64: Register ptdump with debugfs on guest creation
>
> Snehal Koukuntla (1):
> KVM: arm64: Add memory length checks and remove inline in do_ffa_mem_xfer
>
> Will Deacon (2):
> KVM: arm64: Invalidate EL1&0 TLB entries for all VMIDs in nvhe hyp init
> KVM: arm64: Ensure TLBI uses correct VMID after changing context
>
> arch/arm64/include/asm/esr.h | 5 +-
> arch/arm64/include/asm/kvm_arm.h | 1 +
> arch/arm64/include/asm/kvm_asm.h | 6 +-
> arch/arm64/include/asm/kvm_host.h | 22 +-
> arch/arm64/include/asm/kvm_mmu.h | 6 +
> arch/arm64/include/asm/kvm_nested.h | 40 +-
> arch/arm64/include/asm/kvm_pgtable.h | 42 +
> arch/arm64/include/asm/pgtable-hwdef.h | 9 +
> arch/arm64/include/asm/ptdump.h | 43 +-
> arch/arm64/include/asm/sysreg.h | 22 +
> arch/arm64/kvm/Kconfig | 17 +
> arch/arm64/kvm/Makefile | 3 +-
> arch/arm64/kvm/arm.c | 15 +-
> arch/arm64/kvm/at.c | 1101 ++++++++++++++++++++
> arch/arm64/kvm/emulate-nested.c | 81 +-
> arch/arm64/kvm/fpsimd.c | 5 +-
> arch/arm64/kvm/guest.c | 6 +
> arch/arm64/kvm/hyp/include/hyp/fault.h | 2 +-
> arch/arm64/kvm/hyp/include/hyp/switch.h | 3 +
> arch/arm64/kvm/hyp/nvhe/ffa.c | 21 +-
> arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +-
> arch/arm64/kvm/hyp/nvhe/hyp-main.c | 9 +
> arch/arm64/kvm/hyp/nvhe/switch.c | 9 +
> arch/arm64/kvm/hyp/nvhe/tlb.c | 6 +-
> arch/arm64/kvm/hyp/pgtable.c | 48 +-
> arch/arm64/kvm/hyp/vgic-v3-sr.c | 97 +-
> arch/arm64/kvm/hyp/vhe/switch.c | 3 +
> arch/arm64/kvm/nested.c | 55 +-
> arch/arm64/kvm/ptdump.c | 268 +++++
> arch/arm64/kvm/sys_regs.c | 386 ++++---
> arch/arm64/kvm/sys_regs.h | 23 +-
> arch/arm64/kvm/vgic/vgic-v3.c | 12 +
> arch/arm64/kvm/vgic/vgic.c | 14 +-
> arch/arm64/kvm/vgic/vgic.h | 6 +-
> arch/arm64/mm/ptdump.c | 70 +-
> tools/testing/selftests/kvm/Makefile | 2 +
> .../selftests/kvm/aarch64/arch_timer_edge_cases.c | 1062 +++++++++++++++++++
> tools/testing/selftests/kvm/aarch64/no-vgic-v3.c | 175 ++++
> tools/testing/selftests/kvm/aarch64/set_id_regs.c | 1 +
> tools/testing/selftests/kvm/aarch64/vgic_irq.c | 11 +-
> .../selftests/kvm/include/aarch64/arch_timer.h | 18 +-
> .../selftests/kvm/include/aarch64/processor.h | 3 +
> .../testing/selftests/kvm/lib/aarch64/processor.c | 6 +
> 43 files changed, 3405 insertions(+), 331 deletions(-)
> create mode 100644 arch/arm64/kvm/at.c
> create mode 100644 arch/arm64/kvm/ptdump.c
> create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer_edge_cases.c
> create mode 100644 tools/testing/selftests/kvm/aarch64/no-vgic-v3.c
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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