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From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: Andre Przywara <andre.przywara@arm.com>,
	Christoffer Dall <christoffer.dall@arm.com>,
	Jintack Lim <jintack@cs.columbia.edu>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	James Morse <james.morse@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	kernel-team@android.com
Subject: [PATCH v3 00/66] KVM: arm64: ARMv8.3/8.4 Nested Virtualization support
Date: Thu, 10 Dec 2020 15:58:56 +0000	[thread overview]
Message-ID: <20201210160002.1407373-1-maz@kernel.org> (raw)

This is a rework of the NV series that I posted 10 months ago[1], as a
lot of the KVM code has changed since, and the series apply anymore
(not that anybody really cares as the the HW is, as usual, made of
unobtainium...).

From the previous version:

- Integration with the new page-table code
- New exception injection code
- No more messing with the nVHE code
- No AArch32!!!!
- Rebased on v5.10-rc4 + kvmarm/next for 5.11

From a functionality perspective, you can expect a L2 guest to work,
but don't even think of L3, as we only partially emulate the
ARMv8.{3,4}-NV extensions themselves. Same thing for vgic, debug, PMU,
as well as anything that would require a Stage-1 PTW. What we want to
achieve is that with NV disabled, there is no performance overhead and
no regression.

The series is roughly divided in 5 parts: exception handling, memory
virtualization, interrupts and timers for ARMv8.3, followed by the
ARMv8.4 support. There are of course some dependencies, but you'll
hopefully get the gist of it.

For the most courageous of you, I've put out a branch[2]. Of course,
you'll need some userspace. Andre maintains a hacked version of
kvmtool[3] that takes a --nested option, allowing the guest to be
started at EL2. You can run the whole stack in the Foundation
model. Don't be in a hurry ;-).

And to be clear: although Jintack and Christoffer have written tons of
the stuff originaly, I'm the one responsible for breaking it!

[1] https://lore.kernel.org/r/20200211174938.27809-1-maz@kernel.org
[2] git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/nv-5.11.-WIP
[3] git://linux-arm.org/kvmtool.git nv/nv-wip-5.2-rc5

Andre Przywara (1):
  KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ

Christoffer Dall (15):
  KVM: arm64: nv: Introduce nested virtualization VCPU feature
  KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set
  KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x
  KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state
  KVM: arm64: nv: Reset VMPIDR_EL2 and VPIDR_EL2 to sane values
  KVM: arm64: nv: Handle trapped ERET from virtual EL2
  KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor
  KVM: arm64: nv: Trap EL1 VM register accesses in virtual EL2
  KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2
    changes
  KVM: arm64: nv: Implement nested Stage-2 page table walk logic
  KVM: arm64: nv: Unmap/flush shadow stage 2 page tables
  KVM: arm64: nv: arch_timer: Support hyp timer emulation
  KVM: arm64: nv: vgic: Emulate the HW bit in software
  KVM: arm64: nv: Add nested GICv3 tracepoints
  KVM: arm64: nv: Sync nested timer state with ARMv8.4

Jintack Lim (19):
  arm64: Add ARM64_HAS_NESTED_VIRT cpufeature
  KVM: arm64: nv: Handle HCR_EL2.NV system register traps
  KVM: arm64: nv: Support virtual EL2 exceptions
  KVM: arm64: nv: Inject HVC exceptions to the virtual EL2
  KVM: arm64: nv: Trap SPSR_EL1, ELR_EL1 and VBAR_EL1 from virtual EL2
  KVM: arm64: nv: Trap CPACR_EL1 access in virtual EL2
  KVM: arm64: nv: Handle PSCI call via smc from the guest
  KVM: arm64: nv: Respect virtual HCR_EL2.TWX setting
  KVM: arm64: nv: Respect virtual CPTR_EL2.{TFP,FPEN} settings
  KVM: arm64: nv: Respect the virtual HCR_EL2.NV bit setting
  KVM: arm64: nv: Respect virtual HCR_EL2.TVM and TRVM settings
  KVM: arm64: nv: Respect the virtual HCR_EL2.NV1 bit setting
  KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2
  KVM: arm64: nv: Configure HCR_EL2 for nested virtualization
  KVM: arm64: nv: Introduce sys_reg_desc.forward_trap
  KVM: arm64: nv: Set a handler for the system instruction traps
  KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2
  KVM: arm64: nv: Trap and emulate TLBI instructions from virtual EL2
  KVM: arm64: nv: Nested GICv3 Support

Marc Zyngier (31):
  KVM: arm64: nv: Add EL2 system registers to vcpu context
  KVM: arm64: nv: Add non-VHE-EL2->EL1 translation helpers
  KVM: arm64: nv: Handle virtual EL2 registers in
    vcpu_read/write_sys_reg()
  KVM: arm64: nv: Handle SPSR_EL2 specially
  KVM: arm64: nv: Handle HCR_EL2.E2H specially
  KVM: arm64: nv: Save/Restore vEL2 sysregs
  KVM: arm64: nv: Forward debug traps to the nested guest
  KVM: arm64: nv: Filter out unsupported features from ID regs
  KVM: arm64: nv: Hide RAS from nested guests
  KVM: arm64: nv: Support multiple nested Stage-2 mmu structures
  KVM: arm64: nv: Handle shadow stage 2 page faults
  KVM: arm64: nv: Restrict S2 RD/WR permissions to match the guest's
  KVM: arm64: nv: Fold guest's HCR_EL2 configuration into the host's
  KVM: arm64: nv: Add handling of EL2-specific timer registers
  KVM: arm64: nv: Load timer before the GIC
  KVM: arm64: nv: Don't load the GICv4 context on entering a nested
    guest
  KVM: arm64: nv: Implement maintenance interrupt forwarding
  KVM: arm64: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT
  KVM: arm64: nv: Add handling of ARMv8.4-TTL TLB invalidation
  KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like
    information
  KVM: arm64: Allow populating S2 SW bits
  KVM: arm64: nv: Tag shadow S2 entries with nested level
  KVM: arm64: nv: Add include containing the VNCR_EL2 offsets
  KVM: arm64: Map VNCR-capable registers to a separate page
  KVM: arm64: nv: Move nested vgic state into the sysreg file
  KVM: arm64: Add ARMv8.4 Enhanced Nested Virt cpufeature
  KVM: arm64: nv: Synchronize PSTATE early on exit
  KVM: arm64: nv: Allocate VNCR page when required
  KVM: arm64: nv: Enable ARMv8.4-NV support
  KVM: arm64: nv: Fast-track 'InHost' exception returns
  KVM: arm64: nv: Fast-track EL1 TLBIs for VHE guests

 .../admin-guide/kernel-parameters.txt         |    4 +
 .../virt/kvm/devices/arm-vgic-v3.rst          |   12 +-
 arch/arm64/include/asm/cpucaps.h              |    2 +
 arch/arm64/include/asm/esr.h                  |    6 +
 arch/arm64/include/asm/kvm_arm.h              |   28 +-
 arch/arm64/include/asm/kvm_asm.h              |    4 +
 arch/arm64/include/asm/kvm_emulate.h          |  145 +-
 arch/arm64/include/asm/kvm_host.h             |  175 ++-
 arch/arm64/include/asm/kvm_hyp.h              |    2 +
 arch/arm64/include/asm/kvm_mmu.h              |   17 +-
 arch/arm64/include/asm/kvm_nested.h           |  152 ++
 arch/arm64/include/asm/kvm_pgtable.h          |   10 +
 arch/arm64/include/asm/sysreg.h               |  104 +-
 arch/arm64/include/asm/vncr_mapping.h         |   73 +
 arch/arm64/include/uapi/asm/kvm.h             |    2 +
 arch/arm64/kernel/cpufeature.c                |   35 +
 arch/arm64/kvm/Makefile                       |    4 +-
 arch/arm64/kvm/arch_timer.c                   |  189 ++-
 arch/arm64/kvm/arm.c                          |   34 +-
 arch/arm64/kvm/at.c                           |  231 ++++
 arch/arm64/kvm/emulate-nested.c               |  186 +++
 arch/arm64/kvm/guest.c                        |    6 +
 arch/arm64/kvm/handle_exit.c                  |   81 +-
 arch/arm64/kvm/hyp/exception.c                |   44 +-
 arch/arm64/kvm/hyp/include/hyp/switch.h       |   31 +-
 arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h    |   28 +-
 arch/arm64/kvm/hyp/nvhe/switch.c              |   10 +-
 arch/arm64/kvm/hyp/nvhe/sysreg-sr.c           |    2 +-
 arch/arm64/kvm/hyp/pgtable.c                  |    6 +
 arch/arm64/kvm/hyp/vgic-v3-sr.c               |    2 +-
 arch/arm64/kvm/hyp/vhe/switch.c               |  207 ++-
 arch/arm64/kvm/hyp/vhe/sysreg-sr.c            |  125 +-
 arch/arm64/kvm/hyp/vhe/tlb.c                  |   83 ++
 arch/arm64/kvm/inject_fault.c                 |   62 +-
 arch/arm64/kvm/mmu.c                          |  183 ++-
 arch/arm64/kvm/nested.c                       |  908 ++++++++++++
 arch/arm64/kvm/reset.c                        |   14 +-
 arch/arm64/kvm/sys_regs.c                     | 1226 ++++++++++++++++-
 arch/arm64/kvm/sys_regs.h                     |    6 +
 arch/arm64/kvm/trace_arm.h                    |   65 +-
 arch/arm64/kvm/vgic/vgic-init.c               |   30 +
 arch/arm64/kvm/vgic/vgic-kvm-device.c         |   22 +
 arch/arm64/kvm/vgic/vgic-nested-trace.h       |  137 ++
 arch/arm64/kvm/vgic/vgic-v3-nested.c          |  240 ++++
 arch/arm64/kvm/vgic/vgic-v3.c                 |   39 +-
 arch/arm64/kvm/vgic/vgic.c                    |   44 +
 arch/arm64/kvm/vgic/vgic.h                    |   10 +
 include/kvm/arm_arch_timer.h                  |    7 +
 include/kvm/arm_vgic.h                        |   16 +
 tools/arch/arm/include/uapi/asm/kvm.h         |    1 +
 50 files changed, 4890 insertions(+), 160 deletions(-)
 create mode 100644 arch/arm64/include/asm/kvm_nested.h
 create mode 100644 arch/arm64/include/asm/vncr_mapping.h
 create mode 100644 arch/arm64/kvm/at.c
 create mode 100644 arch/arm64/kvm/emulate-nested.c
 create mode 100644 arch/arm64/kvm/nested.c
 create mode 100644 arch/arm64/kvm/vgic/vgic-nested-trace.h
 create mode 100644 arch/arm64/kvm/vgic/vgic-v3-nested.c

-- 
2.29.2


WARNING: multiple messages have this Message-ID
From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: kernel-team@android.com, Andre Przywara <andre.przywara@arm.com>
Subject: [PATCH v3 00/66] KVM: arm64: ARMv8.3/8.4 Nested Virtualization support
Date: Thu, 10 Dec 2020 15:58:56 +0000	[thread overview]
Message-ID: <20201210160002.1407373-1-maz@kernel.org> (raw)

This is a rework of the NV series that I posted 10 months ago[1], as a
lot of the KVM code has changed since, and the series apply anymore
(not that anybody really cares as the the HW is, as usual, made of
unobtainium...).

From the previous version:

- Integration with the new page-table code
- New exception injection code
- No more messing with the nVHE code
- No AArch32!!!!
- Rebased on v5.10-rc4 + kvmarm/next for 5.11

From a functionality perspective, you can expect a L2 guest to work,
but don't even think of L3, as we only partially emulate the
ARMv8.{3,4}-NV extensions themselves. Same thing for vgic, debug, PMU,
as well as anything that would require a Stage-1 PTW. What we want to
achieve is that with NV disabled, there is no performance overhead and
no regression.

The series is roughly divided in 5 parts: exception handling, memory
virtualization, interrupts and timers for ARMv8.3, followed by the
ARMv8.4 support. There are of course some dependencies, but you'll
hopefully get the gist of it.

For the most courageous of you, I've put out a branch[2]. Of course,
you'll need some userspace. Andre maintains a hacked version of
kvmtool[3] that takes a --nested option, allowing the guest to be
started at EL2. You can run the whole stack in the Foundation
model. Don't be in a hurry ;-).

And to be clear: although Jintack and Christoffer have written tons of
the stuff originaly, I'm the one responsible for breaking it!

[1] https://lore.kernel.org/r/20200211174938.27809-1-maz@kernel.org
[2] git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/nv-5.11.-WIP
[3] git://linux-arm.org/kvmtool.git nv/nv-wip-5.2-rc5

Andre Przywara (1):
  KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ

Christoffer Dall (15):
  KVM: arm64: nv: Introduce nested virtualization VCPU feature
  KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set
  KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x
  KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state
  KVM: arm64: nv: Reset VMPIDR_EL2 and VPIDR_EL2 to sane values
  KVM: arm64: nv: Handle trapped ERET from virtual EL2
  KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor
  KVM: arm64: nv: Trap EL1 VM register accesses in virtual EL2
  KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2
    changes
  KVM: arm64: nv: Implement nested Stage-2 page table walk logic
  KVM: arm64: nv: Unmap/flush shadow stage 2 page tables
  KVM: arm64: nv: arch_timer: Support hyp timer emulation
  KVM: arm64: nv: vgic: Emulate the HW bit in software
  KVM: arm64: nv: Add nested GICv3 tracepoints
  KVM: arm64: nv: Sync nested timer state with ARMv8.4

Jintack Lim (19):
  arm64: Add ARM64_HAS_NESTED_VIRT cpufeature
  KVM: arm64: nv: Handle HCR_EL2.NV system register traps
  KVM: arm64: nv: Support virtual EL2 exceptions
  KVM: arm64: nv: Inject HVC exceptions to the virtual EL2
  KVM: arm64: nv: Trap SPSR_EL1, ELR_EL1 and VBAR_EL1 from virtual EL2
  KVM: arm64: nv: Trap CPACR_EL1 access in virtual EL2
  KVM: arm64: nv: Handle PSCI call via smc from the guest
  KVM: arm64: nv: Respect virtual HCR_EL2.TWX setting
  KVM: arm64: nv: Respect virtual CPTR_EL2.{TFP,FPEN} settings
  KVM: arm64: nv: Respect the virtual HCR_EL2.NV bit setting
  KVM: arm64: nv: Respect virtual HCR_EL2.TVM and TRVM settings
  KVM: arm64: nv: Respect the virtual HCR_EL2.NV1 bit setting
  KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2
  KVM: arm64: nv: Configure HCR_EL2 for nested virtualization
  KVM: arm64: nv: Introduce sys_reg_desc.forward_trap
  KVM: arm64: nv: Set a handler for the system instruction traps
  KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2
  KVM: arm64: nv: Trap and emulate TLBI instructions from virtual EL2
  KVM: arm64: nv: Nested GICv3 Support

Marc Zyngier (31):
  KVM: arm64: nv: Add EL2 system registers to vcpu context
  KVM: arm64: nv: Add non-VHE-EL2->EL1 translation helpers
  KVM: arm64: nv: Handle virtual EL2 registers in
    vcpu_read/write_sys_reg()
  KVM: arm64: nv: Handle SPSR_EL2 specially
  KVM: arm64: nv: Handle HCR_EL2.E2H specially
  KVM: arm64: nv: Save/Restore vEL2 sysregs
  KVM: arm64: nv: Forward debug traps to the nested guest
  KVM: arm64: nv: Filter out unsupported features from ID regs
  KVM: arm64: nv: Hide RAS from nested guests
  KVM: arm64: nv: Support multiple nested Stage-2 mmu structures
  KVM: arm64: nv: Handle shadow stage 2 page faults
  KVM: arm64: nv: Restrict S2 RD/WR permissions to match the guest's
  KVM: arm64: nv: Fold guest's HCR_EL2 configuration into the host's
  KVM: arm64: nv: Add handling of EL2-specific timer registers
  KVM: arm64: nv: Load timer before the GIC
  KVM: arm64: nv: Don't load the GICv4 context on entering a nested
    guest
  KVM: arm64: nv: Implement maintenance interrupt forwarding
  KVM: arm64: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT
  KVM: arm64: nv: Add handling of ARMv8.4-TTL TLB invalidation
  KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like
    information
  KVM: arm64: Allow populating S2 SW bits
  KVM: arm64: nv: Tag shadow S2 entries with nested level
  KVM: arm64: nv: Add include containing the VNCR_EL2 offsets
  KVM: arm64: Map VNCR-capable registers to a separate page
  KVM: arm64: nv: Move nested vgic state into the sysreg file
  KVM: arm64: Add ARMv8.4 Enhanced Nested Virt cpufeature
  KVM: arm64: nv: Synchronize PSTATE early on exit
  KVM: arm64: nv: Allocate VNCR page when required
  KVM: arm64: nv: Enable ARMv8.4-NV support
  KVM: arm64: nv: Fast-track 'InHost' exception returns
  KVM: arm64: nv: Fast-track EL1 TLBIs for VHE guests

 .../admin-guide/kernel-parameters.txt         |    4 +
 .../virt/kvm/devices/arm-vgic-v3.rst          |   12 +-
 arch/arm64/include/asm/cpucaps.h              |    2 +
 arch/arm64/include/asm/esr.h                  |    6 +
 arch/arm64/include/asm/kvm_arm.h              |   28 +-
 arch/arm64/include/asm/kvm_asm.h              |    4 +
 arch/arm64/include/asm/kvm_emulate.h          |  145 +-
 arch/arm64/include/asm/kvm_host.h             |  175 ++-
 arch/arm64/include/asm/kvm_hyp.h              |    2 +
 arch/arm64/include/asm/kvm_mmu.h              |   17 +-
 arch/arm64/include/asm/kvm_nested.h           |  152 ++
 arch/arm64/include/asm/kvm_pgtable.h          |   10 +
 arch/arm64/include/asm/sysreg.h               |  104 +-
 arch/arm64/include/asm/vncr_mapping.h         |   73 +
 arch/arm64/include/uapi/asm/kvm.h             |    2 +
 arch/arm64/kernel/cpufeature.c                |   35 +
 arch/arm64/kvm/Makefile                       |    4 +-
 arch/arm64/kvm/arch_timer.c                   |  189 ++-
 arch/arm64/kvm/arm.c                          |   34 +-
 arch/arm64/kvm/at.c                           |  231 ++++
 arch/arm64/kvm/emulate-nested.c               |  186 +++
 arch/arm64/kvm/guest.c                        |    6 +
 arch/arm64/kvm/handle_exit.c                  |   81 +-
 arch/arm64/kvm/hyp/exception.c                |   44 +-
 arch/arm64/kvm/hyp/include/hyp/switch.h       |   31 +-
 arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h    |   28 +-
 arch/arm64/kvm/hyp/nvhe/switch.c              |   10 +-
 arch/arm64/kvm/hyp/nvhe/sysreg-sr.c           |    2 +-
 arch/arm64/kvm/hyp/pgtable.c                  |    6 +
 arch/arm64/kvm/hyp/vgic-v3-sr.c               |    2 +-
 arch/arm64/kvm/hyp/vhe/switch.c               |  207 ++-
 arch/arm64/kvm/hyp/vhe/sysreg-sr.c            |  125 +-
 arch/arm64/kvm/hyp/vhe/tlb.c                  |   83 ++
 arch/arm64/kvm/inject_fault.c                 |   62 +-
 arch/arm64/kvm/mmu.c                          |  183 ++-
 arch/arm64/kvm/nested.c                       |  908 ++++++++++++
 arch/arm64/kvm/reset.c                        |   14 +-
 arch/arm64/kvm/sys_regs.c                     | 1226 ++++++++++++++++-
 arch/arm64/kvm/sys_regs.h                     |    6 +
 arch/arm64/kvm/trace_arm.h                    |   65 +-
 arch/arm64/kvm/vgic/vgic-init.c               |   30 +
 arch/arm64/kvm/vgic/vgic-kvm-device.c         |   22 +
 arch/arm64/kvm/vgic/vgic-nested-trace.h       |  137 ++
 arch/arm64/kvm/vgic/vgic-v3-nested.c          |  240 ++++
 arch/arm64/kvm/vgic/vgic-v3.c                 |   39 +-
 arch/arm64/kvm/vgic/vgic.c                    |   44 +
 arch/arm64/kvm/vgic/vgic.h                    |   10 +
 include/kvm/arm_arch_timer.h                  |    7 +
 include/kvm/arm_vgic.h                        |   16 +
 tools/arch/arm/include/uapi/asm/kvm.h         |    1 +
 50 files changed, 4890 insertions(+), 160 deletions(-)
 create mode 100644 arch/arm64/include/asm/kvm_nested.h
 create mode 100644 arch/arm64/include/asm/vncr_mapping.h
 create mode 100644 arch/arm64/kvm/at.c
 create mode 100644 arch/arm64/kvm/emulate-nested.c
 create mode 100644 arch/arm64/kvm/nested.c
 create mode 100644 arch/arm64/kvm/vgic/vgic-nested-trace.h
 create mode 100644 arch/arm64/kvm/vgic/vgic-v3-nested.c

-- 
2.29.2

_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm

WARNING: multiple messages have this Message-ID
From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: kernel-team@android.com,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Andre Przywara <andre.przywara@arm.com>,
	Christoffer Dall <christoffer.dall@arm.com>,
	James Morse <james.morse@arm.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Jintack Lim <jintack@cs.columbia.edu>,
	Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: [PATCH v3 00/66] KVM: arm64: ARMv8.3/8.4 Nested Virtualization support
Date: Thu, 10 Dec 2020 15:58:56 +0000	[thread overview]
Message-ID: <20201210160002.1407373-1-maz@kernel.org> (raw)

This is a rework of the NV series that I posted 10 months ago[1], as a
lot of the KVM code has changed since, and the series apply anymore
(not that anybody really cares as the the HW is, as usual, made of
unobtainium...).

From the previous version:

- Integration with the new page-table code
- New exception injection code
- No more messing with the nVHE code
- No AArch32!!!!
- Rebased on v5.10-rc4 + kvmarm/next for 5.11

From a functionality perspective, you can expect a L2 guest to work,
but don't even think of L3, as we only partially emulate the
ARMv8.{3,4}-NV extensions themselves. Same thing for vgic, debug, PMU,
as well as anything that would require a Stage-1 PTW. What we want to
achieve is that with NV disabled, there is no performance overhead and
no regression.

The series is roughly divided in 5 parts: exception handling, memory
virtualization, interrupts and timers for ARMv8.3, followed by the
ARMv8.4 support. There are of course some dependencies, but you'll
hopefully get the gist of it.

For the most courageous of you, I've put out a branch[2]. Of course,
you'll need some userspace. Andre maintains a hacked version of
kvmtool[3] that takes a --nested option, allowing the guest to be
started at EL2. You can run the whole stack in the Foundation
model. Don't be in a hurry ;-).

And to be clear: although Jintack and Christoffer have written tons of
the stuff originaly, I'm the one responsible for breaking it!

[1] https://lore.kernel.org/r/20200211174938.27809-1-maz@kernel.org
[2] git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/nv-5.11.-WIP
[3] git://linux-arm.org/kvmtool.git nv/nv-wip-5.2-rc5

Andre Przywara (1):
  KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ

Christoffer Dall (15):
  KVM: arm64: nv: Introduce nested virtualization VCPU feature
  KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set
  KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x
  KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state
  KVM: arm64: nv: Reset VMPIDR_EL2 and VPIDR_EL2 to sane values
  KVM: arm64: nv: Handle trapped ERET from virtual EL2
  KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor
  KVM: arm64: nv: Trap EL1 VM register accesses in virtual EL2
  KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2
    changes
  KVM: arm64: nv: Implement nested Stage-2 page table walk logic
  KVM: arm64: nv: Unmap/flush shadow stage 2 page tables
  KVM: arm64: nv: arch_timer: Support hyp timer emulation
  KVM: arm64: nv: vgic: Emulate the HW bit in software
  KVM: arm64: nv: Add nested GICv3 tracepoints
  KVM: arm64: nv: Sync nested timer state with ARMv8.4

Jintack Lim (19):
  arm64: Add ARM64_HAS_NESTED_VIRT cpufeature
  KVM: arm64: nv: Handle HCR_EL2.NV system register traps
  KVM: arm64: nv: Support virtual EL2 exceptions
  KVM: arm64: nv: Inject HVC exceptions to the virtual EL2
  KVM: arm64: nv: Trap SPSR_EL1, ELR_EL1 and VBAR_EL1 from virtual EL2
  KVM: arm64: nv: Trap CPACR_EL1 access in virtual EL2
  KVM: arm64: nv: Handle PSCI call via smc from the guest
  KVM: arm64: nv: Respect virtual HCR_EL2.TWX setting
  KVM: arm64: nv: Respect virtual CPTR_EL2.{TFP,FPEN} settings
  KVM: arm64: nv: Respect the virtual HCR_EL2.NV bit setting
  KVM: arm64: nv: Respect virtual HCR_EL2.TVM and TRVM settings
  KVM: arm64: nv: Respect the virtual HCR_EL2.NV1 bit setting
  KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2
  KVM: arm64: nv: Configure HCR_EL2 for nested virtualization
  KVM: arm64: nv: Introduce sys_reg_desc.forward_trap
  KVM: arm64: nv: Set a handler for the system instruction traps
  KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2
  KVM: arm64: nv: Trap and emulate TLBI instructions from virtual EL2
  KVM: arm64: nv: Nested GICv3 Support

Marc Zyngier (31):
  KVM: arm64: nv: Add EL2 system registers to vcpu context
  KVM: arm64: nv: Add non-VHE-EL2->EL1 translation helpers
  KVM: arm64: nv: Handle virtual EL2 registers in
    vcpu_read/write_sys_reg()
  KVM: arm64: nv: Handle SPSR_EL2 specially
  KVM: arm64: nv: Handle HCR_EL2.E2H specially
  KVM: arm64: nv: Save/Restore vEL2 sysregs
  KVM: arm64: nv: Forward debug traps to the nested guest
  KVM: arm64: nv: Filter out unsupported features from ID regs
  KVM: arm64: nv: Hide RAS from nested guests
  KVM: arm64: nv: Support multiple nested Stage-2 mmu structures
  KVM: arm64: nv: Handle shadow stage 2 page faults
  KVM: arm64: nv: Restrict S2 RD/WR permissions to match the guest's
  KVM: arm64: nv: Fold guest's HCR_EL2 configuration into the host's
  KVM: arm64: nv: Add handling of EL2-specific timer registers
  KVM: arm64: nv: Load timer before the GIC
  KVM: arm64: nv: Don't load the GICv4 context on entering a nested
    guest
  KVM: arm64: nv: Implement maintenance interrupt forwarding
  KVM: arm64: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT
  KVM: arm64: nv: Add handling of ARMv8.4-TTL TLB invalidation
  KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like
    information
  KVM: arm64: Allow populating S2 SW bits
  KVM: arm64: nv: Tag shadow S2 entries with nested level
  KVM: arm64: nv: Add include containing the VNCR_EL2 offsets
  KVM: arm64: Map VNCR-capable registers to a separate page
  KVM: arm64: nv: Move nested vgic state into the sysreg file
  KVM: arm64: Add ARMv8.4 Enhanced Nested Virt cpufeature
  KVM: arm64: nv: Synchronize PSTATE early on exit
  KVM: arm64: nv: Allocate VNCR page when required
  KVM: arm64: nv: Enable ARMv8.4-NV support
  KVM: arm64: nv: Fast-track 'InHost' exception returns
  KVM: arm64: nv: Fast-track EL1 TLBIs for VHE guests

 .../admin-guide/kernel-parameters.txt         |    4 +
 .../virt/kvm/devices/arm-vgic-v3.rst          |   12 +-
 arch/arm64/include/asm/cpucaps.h              |    2 +
 arch/arm64/include/asm/esr.h                  |    6 +
 arch/arm64/include/asm/kvm_arm.h              |   28 +-
 arch/arm64/include/asm/kvm_asm.h              |    4 +
 arch/arm64/include/asm/kvm_emulate.h          |  145 +-
 arch/arm64/include/asm/kvm_host.h             |  175 ++-
 arch/arm64/include/asm/kvm_hyp.h              |    2 +
 arch/arm64/include/asm/kvm_mmu.h              |   17 +-
 arch/arm64/include/asm/kvm_nested.h           |  152 ++
 arch/arm64/include/asm/kvm_pgtable.h          |   10 +
 arch/arm64/include/asm/sysreg.h               |  104 +-
 arch/arm64/include/asm/vncr_mapping.h         |   73 +
 arch/arm64/include/uapi/asm/kvm.h             |    2 +
 arch/arm64/kernel/cpufeature.c                |   35 +
 arch/arm64/kvm/Makefile                       |    4 +-
 arch/arm64/kvm/arch_timer.c                   |  189 ++-
 arch/arm64/kvm/arm.c                          |   34 +-
 arch/arm64/kvm/at.c                           |  231 ++++
 arch/arm64/kvm/emulate-nested.c               |  186 +++
 arch/arm64/kvm/guest.c                        |    6 +
 arch/arm64/kvm/handle_exit.c                  |   81 +-
 arch/arm64/kvm/hyp/exception.c                |   44 +-
 arch/arm64/kvm/hyp/include/hyp/switch.h       |   31 +-
 arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h    |   28 +-
 arch/arm64/kvm/hyp/nvhe/switch.c              |   10 +-
 arch/arm64/kvm/hyp/nvhe/sysreg-sr.c           |    2 +-
 arch/arm64/kvm/hyp/pgtable.c                  |    6 +
 arch/arm64/kvm/hyp/vgic-v3-sr.c               |    2 +-
 arch/arm64/kvm/hyp/vhe/switch.c               |  207 ++-
 arch/arm64/kvm/hyp/vhe/sysreg-sr.c            |  125 +-
 arch/arm64/kvm/hyp/vhe/tlb.c                  |   83 ++
 arch/arm64/kvm/inject_fault.c                 |   62 +-
 arch/arm64/kvm/mmu.c                          |  183 ++-
 arch/arm64/kvm/nested.c                       |  908 ++++++++++++
 arch/arm64/kvm/reset.c                        |   14 +-
 arch/arm64/kvm/sys_regs.c                     | 1226 ++++++++++++++++-
 arch/arm64/kvm/sys_regs.h                     |    6 +
 arch/arm64/kvm/trace_arm.h                    |   65 +-
 arch/arm64/kvm/vgic/vgic-init.c               |   30 +
 arch/arm64/kvm/vgic/vgic-kvm-device.c         |   22 +
 arch/arm64/kvm/vgic/vgic-nested-trace.h       |  137 ++
 arch/arm64/kvm/vgic/vgic-v3-nested.c          |  240 ++++
 arch/arm64/kvm/vgic/vgic-v3.c                 |   39 +-
 arch/arm64/kvm/vgic/vgic.c                    |   44 +
 arch/arm64/kvm/vgic/vgic.h                    |   10 +
 include/kvm/arm_arch_timer.h                  |    7 +
 include/kvm/arm_vgic.h                        |   16 +
 tools/arch/arm/include/uapi/asm/kvm.h         |    1 +
 50 files changed, 4890 insertions(+), 160 deletions(-)
 create mode 100644 arch/arm64/include/asm/kvm_nested.h
 create mode 100644 arch/arm64/include/asm/vncr_mapping.h
 create mode 100644 arch/arm64/kvm/at.c
 create mode 100644 arch/arm64/kvm/emulate-nested.c
 create mode 100644 arch/arm64/kvm/nested.c
 create mode 100644 arch/arm64/kvm/vgic/vgic-nested-trace.h
 create mode 100644 arch/arm64/kvm/vgic/vgic-v3-nested.c

-- 
2.29.2


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             reply	other threads:[~2020-12-10 16:01 UTC|newest]

Thread overview: 248+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-10 15:58 Marc Zyngier [this message]
2020-12-10 15:58 ` Marc Zyngier
2020-12-10 15:58 ` Marc Zyngier
2020-12-10 15:58 ` [PATCH v3 01/66] arm64: Add ARM64_HAS_NESTED_VIRT cpufeature Marc Zyngier
2020-12-10 15:58   ` Marc Zyngier
2020-12-10 15:58   ` Marc Zyngier
2020-12-10 15:58 ` [PATCH v3 02/66] KVM: arm64: nv: Introduce nested virtualization VCPU feature Marc Zyngier
2020-12-10 15:58   ` Marc Zyngier
2020-12-10 15:58   ` Marc Zyngier
2020-12-10 15:58 ` [PATCH v3 03/66] KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set Marc Zyngier
2020-12-10 15:58   ` Marc Zyngier
2020-12-10 15:58   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 04/66] KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 05/66] KVM: arm64: nv: Add EL2 system registers to vcpu context Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2021-01-29 18:04   ` Andre Przywara
2021-01-29 18:04     ` Andre Przywara
2021-01-29 18:04     ` Andre Przywara
2020-12-10 15:59 ` [PATCH v3 06/66] KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 07/66] KVM: arm64: nv: Handle HCR_EL2.NV system register traps Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2021-01-29 18:05   ` Andre Przywara
2021-01-29 18:05     ` Andre Przywara
2021-01-29 18:05     ` Andre Przywara
2020-12-10 15:59 ` [PATCH v3 08/66] KVM: arm64: nv: Reset VMPIDR_EL2 and VPIDR_EL2 to sane values Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 09/66] KVM: arm64: nv: Support virtual EL2 exceptions Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2021-01-29 18:05   ` Andre Przywara
2021-01-29 18:05     ` Andre Przywara
2021-01-29 18:05     ` Andre Przywara
2021-02-16 22:05     ` Marc Zyngier
2021-02-16 22:05       ` Marc Zyngier
2021-02-16 22:05       ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 10/66] KVM: arm64: nv: Inject HVC exceptions to the virtual EL2 Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 11/66] KVM: arm64: nv: Handle trapped ERET from " Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 12/66] KVM: arm64: nv: Add non-VHE-EL2->EL1 translation helpers Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 13/66] KVM: arm64: nv: Handle virtual EL2 registers in vcpu_read/write_sys_reg() Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 14/66] KVM: arm64: nv: Handle SPSR_EL2 specially Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 15/66] KVM: arm64: nv: Handle HCR_EL2.E2H specially Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 16/66] KVM: arm64: nv: Save/Restore vEL2 sysregs Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 17/66] KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 18/66] KVM: arm64: nv: Trap EL1 VM register accesses in virtual EL2 Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 19/66] KVM: arm64: nv: Trap SPSR_EL1, ELR_EL1 and VBAR_EL1 from " Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 20/66] KVM: arm64: nv: Trap CPACR_EL1 access in " Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 21/66] KVM: arm64: nv: Handle PSCI call via smc from the guest Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 22/66] KVM: arm64: nv: Respect virtual HCR_EL2.TWX setting Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 23/66] KVM: arm64: nv: Respect virtual CPTR_EL2.{TFP,FPEN} settings Marc Zyngier
2020-12-10 15:59   ` [PATCH v3 23/66] KVM: arm64: nv: Respect virtual CPTR_EL2.{TFP, FPEN} settings Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 24/66] KVM: arm64: nv: Respect the virtual HCR_EL2.NV bit setting Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 25/66] KVM: arm64: nv: Respect virtual HCR_EL2.TVM and TRVM settings Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 26/66] KVM: arm64: nv: Respect the virtual HCR_EL2.NV1 bit setting Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 27/66] KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2 Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 28/66] KVM: arm64: nv: Forward debug traps to the nested guest Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 29/66] KVM: arm64: nv: Configure HCR_EL2 for nested virtualization Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 30/66] KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2 changes Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 31/66] KVM: arm64: nv: Filter out unsupported features from ID regs Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 32/66] KVM: arm64: nv: Hide RAS from nested guests Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 33/66] KVM: arm64: nv: Support multiple nested Stage-2 mmu structures Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2021-01-21  2:59   ` Haibo Xu
2021-01-21  2:59     ` Haibo Xu
2021-01-21  2:59     ` Haibo Xu
2021-02-16 18:34     ` Marc Zyngier
2021-02-16 18:34       ` Marc Zyngier
2021-02-16 18:34       ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 34/66] KVM: arm64: nv: Implement nested Stage-2 page table walk logic Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 35/66] KVM: arm64: nv: Handle shadow stage 2 page faults Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 36/66] KVM: arm64: nv: Restrict S2 RD/WR permissions to match the guest's Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 37/66] KVM: arm64: nv: Unmap/flush shadow stage 2 page tables Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 38/66] KVM: arm64: nv: Introduce sys_reg_desc.forward_trap Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 39/66] KVM: arm64: nv: Set a handler for the system instruction traps Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 40/66] KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2 Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 41/66] KVM: arm64: nv: Trap and emulate TLBI " Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 42/66] KVM: arm64: nv: Fold guest's HCR_EL2 configuration into the host's Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 43/66] KVM: arm64: nv: arch_timer: Support hyp timer emulation Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 44/66] KVM: arm64: nv: Add handling of EL2-specific timer registers Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 45/66] KVM: arm64: nv: Load timer before the GIC Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 46/66] KVM: arm64: nv: Nested GICv3 Support Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 47/66] KVM: arm64: nv: Don't load the GICv4 context on entering a nested guest Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 48/66] KVM: arm64: nv: vgic: Emulate the HW bit in software Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 49/66] KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 50/66] KVM: arm64: nv: Implement maintenance interrupt forwarding Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 51/66] KVM: arm64: nv: Add nested GICv3 tracepoints Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 52/66] KVM: arm64: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 53/66] KVM: arm64: nv: Add handling of ARMv8.4-TTL TLB invalidation Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 54/66] KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like information Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 55/66] KVM: arm64: Allow populating S2 SW bits Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 56/66] KVM: arm64: nv: Tag shadow S2 entries with nested level Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 57/66] KVM: arm64: nv: Add include containing the VNCR_EL2 offsets Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 58/66] KVM: arm64: Map VNCR-capable registers to a separate page Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 59/66] KVM: arm64: nv: Move nested vgic state into the sysreg file Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 60/66] KVM: arm64: Add ARMv8.4 Enhanced Nested Virt cpufeature Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 61/66] KVM: arm64: nv: Synchronize PSTATE early on exit Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 62/66] KVM: arm64: nv: Sync nested timer state with ARMv8.4 Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59 ` [PATCH v3 63/66] KVM: arm64: nv: Allocate VNCR page when required Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2020-12-10 15:59   ` Marc Zyngier
2021-01-21  2:47   ` Haibo Xu
2021-01-21  2:47     ` Haibo Xu
2021-01-21  2:47     ` Haibo Xu
2021-02-16 19:03     ` Marc Zyngier
2021-02-16 19:03       ` Marc Zyngier
2021-02-16 19:03       ` Marc Zyngier
2020-12-10 16:00 ` [PATCH v3 64/66] KVM: arm64: nv: Enable ARMv8.4-NV support Marc Zyngier
2020-12-10 16:00   ` Marc Zyngier
2020-12-10 16:00   ` Marc Zyngier
2020-12-10 16:00 ` [PATCH v3 65/66] KVM: arm64: nv: Fast-track 'InHost' exception returns Marc Zyngier
2020-12-10 16:00   ` Marc Zyngier
2020-12-10 16:00   ` Marc Zyngier
2020-12-10 16:00 ` [PATCH v3 66/66] KVM: arm64: nv: Fast-track EL1 TLBIs for VHE guests Marc Zyngier
2020-12-10 16:00   ` Marc Zyngier
2020-12-10 16:00   ` Marc Zyngier
2021-01-11  7:20 ` [PATCH v3 00/66] KVM: arm64: ARMv8.3/8.4 Nested Virtualization support Haibo Xu
2021-01-11  8:59   ` Marc Zyngier
2021-01-11  8:59     ` Marc Zyngier
2021-01-11  8:59     ` Marc Zyngier
2021-01-12  8:02     ` Haibo Xu
2021-01-12  8:02       ` Haibo Xu
2021-01-12  8:02       ` Haibo Xu
2021-01-18 17:38 ` André Przywara
2021-01-18 17:38   ` André Przywara
2021-01-18 17:38   ` André Przywara
2021-01-21  2:35 ` Haibo Xu
2021-01-21  3:03 ` Haibo Xu
2021-01-21  3:03   ` Haibo Xu
2021-01-21  3:03   ` Haibo Xu
2021-02-04  7:51   ` Haibo Xu
2021-02-04  7:51     ` Haibo Xu
2021-02-04  7:51     ` Haibo Xu
2021-02-17 22:10     ` Marc Zyngier
2021-02-17 22:10       ` Marc Zyngier
2021-02-17 22:10       ` Marc Zyngier
2021-02-23  9:43       ` Haibo Xu
2021-02-23  9:43         ` Haibo Xu
2021-02-23  9:43         ` Haibo Xu

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