From: Marc Zyngier <maz@kernel.org> To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Alexandru Elisei <alexandru.elisei@arm.com>, Andre Przywara <andre.przywara@arm.com>, Chase Conklin <chase.conklin@arm.com>, Christoffer Dall <christoffer.dall@arm.com>, Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>, Jintack Lim <jintack@cs.columbia.edu>, Russell King <rmk+kernel@armlinux.org.uk>, James Morse <james.morse@arm.com>, Suzuki K Poulose <suzuki.poulose@arm.com>, Oliver Upton <oliver.upton@linux.dev>, Zenghui Yu <yuzenghui@huawei.com> Subject: [PATCH v8 00/69] KVM: arm64: ARMv8.3/8.4 Nested Virtualization support Date: Tue, 31 Jan 2023 09:23:55 +0000 [thread overview] Message-ID: <20230131092504.2880505-1-maz@kernel.org> (raw) This is the second drop of NV support on arm64 for this year. This month even. Something is happening! For the previous episodes, see [1]. What's changed: - TLB invalidation has been fixed! A couple of terrible bugs were preventing the TLBI emulation code from selecting the correct MMU context, leading the shadow page-tables never being invalidated. - As a consequence, EDK2 now works correctly at L2 with QEMU as the VMM, as we now teardown the S2 PTs when L1 unmaps the memslot on write to the emulated flash. - As a consequence of the above consequence, the Debian installer passes with flying colors at L2. Yay! - A few other fixes, such as better handling of AT instructions. - All rebased on 6.2-rc4 + kvmarm-fixes-6.2-* + kvmarm/next. Full branch at [2]. Performance: - This is surprisingly good. Specially after years of watching paint dry in a model. Of course, if your workload is exit/trap heavy, it will suck. But not quite as much as on the model, which is the benchmark. - For CPU intensive workloads (kernel compilation), I have seen as little a 6% overhead between L0 and L2. YMMV. Testing: - No model involved this time around. I have solely run the series on an Apple M2 with 16k pages, because that's what I have, and I consider it the reference (HW you cannot get your hands on doesn't really count). - Because the M2 is "pretty lax" with the architecture, a bunch of things cannot be tested (E2H=0 being the most obvious one). - For the same reason, I may be relying on non-architectural behaviours. I've done my best not to, but you never know. Until I get a machine that *is* fully compliant with the architecture, it is a risk I'll have to take. - The series has a number of hacks for the M2 to actually work (vgic emulation, mostly). - I haven't tested FEAT_NV (only FEAT_NV2), and seriously considering dropping the support for it. I doubt there is any HW solely implementing FEAT_NV and not FEAT_NV2. - There is a kvmtool branch that allows you to use the --nested option at [3]. I have no idea what became of the equivalent QEMU patches. Merging: - I would suggest that the first 12 patches are in a mergeable state. Only patch #2 hasn't been reviewed yet (because it is new), but it doesn't affect anything non-NV and makes NV work. I really want this in before CCA! :D - I have a yet another fix for the Apple AIC driver, but I'll post that separately. Many thanks to Alexandru, Chase, Ganapatrao and Russell for spending a lot of time reviewing this, spotting issues and providing helpful suggestions. [1] https://lore.kernel.org/r/20230112191927.1814989-1-maz@kernel.org [2] git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/nv-6.3-WIP [3] https://git.kernel.org/pub/scm/linux/kernel/git/maz/kvmtool.git/log/?h=arm64/nv-5.16 Andre Przywara (1): KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ Christoffer Dall (13): 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: 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: vgic: Emulate the HW bit in software KVM: arm64: nv: Add nested GICv3 tracepoints KVM: arm64: nv: Sync nested timer state with FEAT_NV2 Jintack Lim (16): 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: Add accessors for 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: Trap and emulate TLBI instructions from virtual EL2 KVM: arm64: nv: Nested GICv3 Support Marc Zyngier (39): KVM: arm64: Use the S2 MMU context to iterate over S2 table 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: Emulate PSTATE.M for a guest hypervisor KVM: arm64: nv: Allow a sysreg to be hidden from userspace only 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: Set a handler for the system instruction traps KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2 KVM: arm64: nv: Fold guest's HCR_EL2 configuration into the host's KVM: arm64: nv: arch_timer: Support hyp timer emulation 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: Deal with broken VGIC on maintenance interrupt delivery KVM: arm64: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT KVM: arm64: nv: Add handling of FEAT_TTL TLB invalidation KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like information KVM: arm64: nv: Tag shadow S2 entries with nested level KVM: arm64: nv: Add include containing the VNCR_EL2 offsets KVM: arm64: nv: Map VNCR-capable registers to a separate page KVM: arm64: nv: Move nested vgic state into the sysreg file KVM: arm64: Add FEAT_NV2 cpu feature KVM: arm64: nv: Publish emulated timer interrupt state in the in-memory state 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 KVM: arm64: nv: Use FEAT_ECV to trap access to EL0 timers KVM: arm64: nv: Accelerate EL0 timer read accesses when FEAT_ECV is on .../admin-guide/kernel-parameters.txt | 7 +- .../virt/kvm/devices/arm-vgic-v3.rst | 12 +- arch/arm64/include/asm/esr.h | 5 + arch/arm64/include/asm/kvm_arm.h | 27 +- arch/arm64/include/asm/kvm_asm.h | 4 + arch/arm64/include/asm/kvm_emulate.h | 159 +- arch/arm64/include/asm/kvm_host.h | 195 ++- arch/arm64/include/asm/kvm_hyp.h | 2 + arch/arm64/include/asm/kvm_mmu.h | 23 +- arch/arm64/include/asm/kvm_nested.h | 150 ++ arch/arm64/include/asm/sysreg.h | 102 +- arch/arm64/include/asm/vncr_mapping.h | 74 + arch/arm64/include/uapi/asm/kvm.h | 2 + arch/arm64/kernel/cpufeature.c | 36 + arch/arm64/kvm/Makefile | 4 +- arch/arm64/kvm/arch_timer.c | 301 +++- arch/arm64/kvm/arm.c | 38 +- arch/arm64/kvm/at.c | 221 +++ arch/arm64/kvm/emulate-nested.c | 217 +++ arch/arm64/kvm/guest.c | 6 + arch/arm64/kvm/handle_exit.c | 74 +- arch/arm64/kvm/hyp/exception.c | 48 +- arch/arm64/kvm/hyp/include/hyp/switch.h | 12 +- arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 24 +- arch/arm64/kvm/hyp/nvhe/switch.c | 2 +- arch/arm64/kvm/hyp/nvhe/sysreg-sr.c | 2 +- arch/arm64/kvm/hyp/vgic-v3-sr.c | 2 +- arch/arm64/kvm/hyp/vhe/switch.c | 230 ++- arch/arm64/kvm/hyp/vhe/sysreg-sr.c | 125 +- arch/arm64/kvm/hyp/vhe/tlb.c | 83 + arch/arm64/kvm/inject_fault.c | 61 +- arch/arm64/kvm/mmu.c | 259 +++- arch/arm64/kvm/nested.c | 896 +++++++++++ arch/arm64/kvm/reset.c | 17 + arch/arm64/kvm/sys_regs.c | 1377 ++++++++++++++++- arch/arm64/kvm/sys_regs.h | 14 +- arch/arm64/kvm/trace_arm.h | 65 +- arch/arm64/kvm/vgic/vgic-init.c | 33 + arch/arm64/kvm/vgic/vgic-kvm-device.c | 29 +- arch/arm64/kvm/vgic/vgic-nested-trace.h | 137 ++ arch/arm64/kvm/vgic/vgic-v3-nested.c | 244 +++ arch/arm64/kvm/vgic/vgic-v3.c | 39 +- arch/arm64/kvm/vgic/vgic.c | 44 + arch/arm64/kvm/vgic/vgic.h | 10 + arch/arm64/tools/cpucaps | 2 + include/clocksource/arm_arch_timer.h | 4 + include/kvm/arm_arch_timer.h | 9 +- include/kvm/arm_vgic.h | 16 + include/uapi/linux/kvm.h | 1 + tools/arch/arm/include/uapi/asm/kvm.h | 1 + 50 files changed, 5221 insertions(+), 224 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 -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org> To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Alexandru Elisei <alexandru.elisei@arm.com>, Andre Przywara <andre.przywara@arm.com>, Chase Conklin <chase.conklin@arm.com>, Christoffer Dall <christoffer.dall@arm.com>, Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>, Jintack Lim <jintack@cs.columbia.edu>, Russell King <rmk+kernel@armlinux.org.uk>, James Morse <james.morse@arm.com>, Suzuki K Poulose <suzuki.poulose@arm.com>, Oliver Upton <oliver.upton@linux.dev>, Zenghui Yu <yuzenghui@huawei.com> Subject: [PATCH v8 00/69] KVM: arm64: ARMv8.3/8.4 Nested Virtualization support Date: Tue, 31 Jan 2023 09:23:55 +0000 [thread overview] Message-ID: <20230131092504.2880505-1-maz@kernel.org> (raw) This is the second drop of NV support on arm64 for this year. This month even. Something is happening! For the previous episodes, see [1]. What's changed: - TLB invalidation has been fixed! A couple of terrible bugs were preventing the TLBI emulation code from selecting the correct MMU context, leading the shadow page-tables never being invalidated. - As a consequence, EDK2 now works correctly at L2 with QEMU as the VMM, as we now teardown the S2 PTs when L1 unmaps the memslot on write to the emulated flash. - As a consequence of the above consequence, the Debian installer passes with flying colors at L2. Yay! - A few other fixes, such as better handling of AT instructions. - All rebased on 6.2-rc4 + kvmarm-fixes-6.2-* + kvmarm/next. Full branch at [2]. Performance: - This is surprisingly good. Specially after years of watching paint dry in a model. Of course, if your workload is exit/trap heavy, it will suck. But not quite as much as on the model, which is the benchmark. - For CPU intensive workloads (kernel compilation), I have seen as little a 6% overhead between L0 and L2. YMMV. Testing: - No model involved this time around. I have solely run the series on an Apple M2 with 16k pages, because that's what I have, and I consider it the reference (HW you cannot get your hands on doesn't really count). - Because the M2 is "pretty lax" with the architecture, a bunch of things cannot be tested (E2H=0 being the most obvious one). - For the same reason, I may be relying on non-architectural behaviours. I've done my best not to, but you never know. Until I get a machine that *is* fully compliant with the architecture, it is a risk I'll have to take. - The series has a number of hacks for the M2 to actually work (vgic emulation, mostly). - I haven't tested FEAT_NV (only FEAT_NV2), and seriously considering dropping the support for it. I doubt there is any HW solely implementing FEAT_NV and not FEAT_NV2. - There is a kvmtool branch that allows you to use the --nested option at [3]. I have no idea what became of the equivalent QEMU patches. Merging: - I would suggest that the first 12 patches are in a mergeable state. Only patch #2 hasn't been reviewed yet (because it is new), but it doesn't affect anything non-NV and makes NV work. I really want this in before CCA! :D - I have a yet another fix for the Apple AIC driver, but I'll post that separately. Many thanks to Alexandru, Chase, Ganapatrao and Russell for spending a lot of time reviewing this, spotting issues and providing helpful suggestions. [1] https://lore.kernel.org/r/20230112191927.1814989-1-maz@kernel.org [2] git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/nv-6.3-WIP [3] https://git.kernel.org/pub/scm/linux/kernel/git/maz/kvmtool.git/log/?h=arm64/nv-5.16 Andre Przywara (1): KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ Christoffer Dall (13): 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: 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: vgic: Emulate the HW bit in software KVM: arm64: nv: Add nested GICv3 tracepoints KVM: arm64: nv: Sync nested timer state with FEAT_NV2 Jintack Lim (16): 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: Add accessors for 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: Trap and emulate TLBI instructions from virtual EL2 KVM: arm64: nv: Nested GICv3 Support Marc Zyngier (39): KVM: arm64: Use the S2 MMU context to iterate over S2 table 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: Emulate PSTATE.M for a guest hypervisor KVM: arm64: nv: Allow a sysreg to be hidden from userspace only 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: Set a handler for the system instruction traps KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2 KVM: arm64: nv: Fold guest's HCR_EL2 configuration into the host's KVM: arm64: nv: arch_timer: Support hyp timer emulation 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: Deal with broken VGIC on maintenance interrupt delivery KVM: arm64: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT KVM: arm64: nv: Add handling of FEAT_TTL TLB invalidation KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like information KVM: arm64: nv: Tag shadow S2 entries with nested level KVM: arm64: nv: Add include containing the VNCR_EL2 offsets KVM: arm64: nv: Map VNCR-capable registers to a separate page KVM: arm64: nv: Move nested vgic state into the sysreg file KVM: arm64: Add FEAT_NV2 cpu feature KVM: arm64: nv: Publish emulated timer interrupt state in the in-memory state 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 KVM: arm64: nv: Use FEAT_ECV to trap access to EL0 timers KVM: arm64: nv: Accelerate EL0 timer read accesses when FEAT_ECV is on .../admin-guide/kernel-parameters.txt | 7 +- .../virt/kvm/devices/arm-vgic-v3.rst | 12 +- arch/arm64/include/asm/esr.h | 5 + arch/arm64/include/asm/kvm_arm.h | 27 +- arch/arm64/include/asm/kvm_asm.h | 4 + arch/arm64/include/asm/kvm_emulate.h | 159 +- arch/arm64/include/asm/kvm_host.h | 195 ++- arch/arm64/include/asm/kvm_hyp.h | 2 + arch/arm64/include/asm/kvm_mmu.h | 23 +- arch/arm64/include/asm/kvm_nested.h | 150 ++ arch/arm64/include/asm/sysreg.h | 102 +- arch/arm64/include/asm/vncr_mapping.h | 74 + arch/arm64/include/uapi/asm/kvm.h | 2 + arch/arm64/kernel/cpufeature.c | 36 + arch/arm64/kvm/Makefile | 4 +- arch/arm64/kvm/arch_timer.c | 301 +++- arch/arm64/kvm/arm.c | 38 +- arch/arm64/kvm/at.c | 221 +++ arch/arm64/kvm/emulate-nested.c | 217 +++ arch/arm64/kvm/guest.c | 6 + arch/arm64/kvm/handle_exit.c | 74 +- arch/arm64/kvm/hyp/exception.c | 48 +- arch/arm64/kvm/hyp/include/hyp/switch.h | 12 +- arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 24 +- arch/arm64/kvm/hyp/nvhe/switch.c | 2 +- arch/arm64/kvm/hyp/nvhe/sysreg-sr.c | 2 +- arch/arm64/kvm/hyp/vgic-v3-sr.c | 2 +- arch/arm64/kvm/hyp/vhe/switch.c | 230 ++- arch/arm64/kvm/hyp/vhe/sysreg-sr.c | 125 +- arch/arm64/kvm/hyp/vhe/tlb.c | 83 + arch/arm64/kvm/inject_fault.c | 61 +- arch/arm64/kvm/mmu.c | 259 +++- arch/arm64/kvm/nested.c | 896 +++++++++++ arch/arm64/kvm/reset.c | 17 + arch/arm64/kvm/sys_regs.c | 1377 ++++++++++++++++- arch/arm64/kvm/sys_regs.h | 14 +- arch/arm64/kvm/trace_arm.h | 65 +- arch/arm64/kvm/vgic/vgic-init.c | 33 + arch/arm64/kvm/vgic/vgic-kvm-device.c | 29 +- arch/arm64/kvm/vgic/vgic-nested-trace.h | 137 ++ arch/arm64/kvm/vgic/vgic-v3-nested.c | 244 +++ arch/arm64/kvm/vgic/vgic-v3.c | 39 +- arch/arm64/kvm/vgic/vgic.c | 44 + arch/arm64/kvm/vgic/vgic.h | 10 + arch/arm64/tools/cpucaps | 2 + include/clocksource/arm_arch_timer.h | 4 + include/kvm/arm_arch_timer.h | 9 +- include/kvm/arm_vgic.h | 16 + include/uapi/linux/kvm.h | 1 + tools/arch/arm/include/uapi/asm/kvm.h | 1 + 50 files changed, 5221 insertions(+), 224 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 -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2023-01-31 9:25 UTC|newest] Thread overview: 170+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-01-31 9:23 Marc Zyngier [this message] 2023-01-31 9:23 ` [PATCH v8 00/69] KVM: arm64: ARMv8.3/8.4 Nested Virtualization support Marc Zyngier 2023-01-31 9:23 ` [PATCH v8 01/69] arm64: Add ARM64_HAS_NESTED_VIRT cpufeature Marc Zyngier 2023-01-31 9:23 ` Marc Zyngier 2023-01-31 12:03 ` Catalin Marinas 2023-01-31 12:03 ` Catalin Marinas 2023-01-31 13:21 ` Marc Zyngier 2023-01-31 13:21 ` Marc Zyngier 2023-01-31 13:47 ` Suzuki K Poulose 2023-01-31 13:47 ` Suzuki K Poulose 2023-01-31 14:00 ` Marc Zyngier 2023-01-31 14:00 ` Marc Zyngier 2023-01-31 17:34 ` Suzuki K Poulose 2023-01-31 17:34 ` Suzuki K Poulose 2023-01-31 20:04 ` Oliver Upton 2023-01-31 20:04 ` Oliver Upton 2023-01-31 21:26 ` Marc Zyngier 2023-01-31 21:26 ` Marc Zyngier 2023-01-31 22:01 ` Oliver Upton 2023-01-31 22:01 ` Oliver Upton 2023-01-31 20:44 ` Marc Zyngier 2023-01-31 20:44 ` Marc Zyngier 2023-01-31 9:23 ` [PATCH v8 02/69] KVM: arm64: Use the S2 MMU context to iterate over S2 table Marc Zyngier 2023-01-31 9:23 ` Marc Zyngier 2023-01-31 9:23 ` [PATCH v8 03/69] KVM: arm64: nv: Introduce nested virtualization VCPU feature Marc Zyngier 2023-01-31 9:23 ` Marc Zyngier 2023-01-31 9:23 ` [PATCH v8 04/69] KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set Marc Zyngier 2023-01-31 9:23 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 05/69] KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 06/69] KVM: arm64: nv: Add EL2 system registers to vcpu context Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 07/69] KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 08/69] KVM: arm64: nv: Handle HCR_EL2.NV system register traps Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 09/69] KVM: arm64: nv: Reset VMPIDR_EL2 and VPIDR_EL2 to sane values Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 20:17 ` Oliver Upton 2023-01-31 20:17 ` Oliver Upton 2023-01-31 22:04 ` Marc Zyngier 2023-01-31 22:04 ` Marc Zyngier 2023-01-31 22:09 ` Oliver Upton 2023-01-31 22:09 ` Oliver Upton 2023-01-31 22:16 ` Marc Zyngier 2023-01-31 22:16 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 10/69] KVM: arm64: nv: Support virtual EL2 exceptions Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 11/69] KVM: arm64: nv: Inject HVC exceptions to the virtual EL2 Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 12/69] KVM: arm64: nv: Handle trapped ERET from " Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 13/69] KVM: arm64: nv: Add non-VHE-EL2->EL1 translation helpers Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 14/69] KVM: arm64: nv: Handle virtual EL2 registers in vcpu_read/write_sys_reg() Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 15/69] KVM: arm64: nv: Handle SPSR_EL2 specially Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 16/69] KVM: arm64: nv: Handle HCR_EL2.E2H specially Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 17/69] KVM: arm64: nv: Save/Restore vEL2 sysregs Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 18/69] KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 19/69] KVM: arm64: nv: Trap EL1 VM register accesses in virtual EL2 Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 20/69] KVM: arm64: nv: Add accessors for SPSR_EL1, ELR_EL1 and VBAR_EL1 from " Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 21/69] KVM: arm64: nv: Trap CPACR_EL1 access in " Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 22/69] KVM: arm64: nv: Handle PSCI call via smc from the guest Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 23/69] KVM: arm64: nv: Respect virtual HCR_EL2.TWX setting Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 24/69] KVM: arm64: nv: Respect virtual CPTR_EL2.{TFP,FPEN} settings Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 25/69] KVM: arm64: nv: Respect the virtual HCR_EL2.NV bit setting Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 26/69] KVM: arm64: nv: Respect virtual HCR_EL2.TVM and TRVM settings Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 27/69] KVM: arm64: nv: Respect the virtual HCR_EL2.NV1 bit setting Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 28/69] KVM: arm64: nv: Allow a sysreg to be hidden from userspace only Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 29/69] KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2 Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 30/69] KVM: arm64: nv: Forward debug traps to the nested guest Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 31/69] KVM: arm64: nv: Configure HCR_EL2 for nested virtualization Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 32/69] KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2 changes Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 33/69] KVM: arm64: nv: Filter out unsupported features from ID regs Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 34/69] KVM: arm64: nv: Hide RAS from nested guests Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 35/69] KVM: arm64: nv: Support multiple nested Stage-2 mmu structures Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 36/69] KVM: arm64: nv: Implement nested Stage-2 page table walk logic Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 37/69] KVM: arm64: nv: Handle shadow stage 2 page faults Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 38/69] KVM: arm64: nv: Restrict S2 RD/WR permissions to match the guest's Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 39/69] KVM: arm64: nv: Unmap/flush shadow stage 2 page tables Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 40/69] KVM: arm64: nv: Set a handler for the system instruction traps Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 41/69] KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2 Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 42/69] KVM: arm64: nv: Trap and emulate TLBI " Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 43/69] KVM: arm64: nv: Fold guest's HCR_EL2 configuration into the host's Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 44/69] KVM: arm64: nv: arch_timer: Support hyp timer emulation Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 45/69] KVM: arm64: nv: Add handling of EL2-specific timer registers Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 46/69] KVM: arm64: nv: Load timer before the GIC Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 47/69] KVM: arm64: nv: Nested GICv3 Support Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 48/69] KVM: arm64: nv: Don't load the GICv4 context on entering a nested guest Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 49/69] KVM: arm64: nv: vgic: Emulate the HW bit in software Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 50/69] KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 51/69] KVM: arm64: nv: Implement maintenance interrupt forwarding Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 52/69] KVM: arm64: nv: Deal with broken VGIC on maintenance interrupt delivery Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 53/69] KVM: arm64: nv: Add nested GICv3 tracepoints Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 54/69] KVM: arm64: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 55/69] KVM: arm64: nv: Add handling of FEAT_TTL TLB invalidation Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 56/69] KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like information Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 57/69] KVM: arm64: nv: Tag shadow S2 entries with nested level Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 58/69] KVM: arm64: nv: Add include containing the VNCR_EL2 offsets Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 59/69] KVM: arm64: nv: Map VNCR-capable registers to a separate page Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 60/69] KVM: arm64: nv: Move nested vgic state into the sysreg file Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 61/69] KVM: arm64: Add FEAT_NV2 cpu feature Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 62/69] KVM: arm64: nv: Sync nested timer state with FEAT_NV2 Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 63/69] KVM: arm64: nv: Publish emulated timer interrupt state in the in-memory state Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:24 ` [PATCH v8 64/69] KVM: arm64: nv: Allocate VNCR page when required Marc Zyngier 2023-01-31 9:24 ` Marc Zyngier 2023-01-31 9:25 ` [PATCH v8 65/69] KVM: arm64: nv: Enable ARMv8.4-NV support Marc Zyngier 2023-01-31 9:25 ` Marc Zyngier 2023-01-31 9:25 ` [PATCH v8 66/69] KVM: arm64: nv: Fast-track 'InHost' exception returns Marc Zyngier 2023-01-31 9:25 ` Marc Zyngier 2023-01-31 9:25 ` [PATCH v8 67/69] KVM: arm64: nv: Fast-track EL1 TLBIs for VHE guests Marc Zyngier 2023-01-31 9:25 ` Marc Zyngier 2023-01-31 9:25 ` [PATCH v8 68/69] KVM: arm64: nv: Use FEAT_ECV to trap access to EL0 timers Marc Zyngier 2023-01-31 9:25 ` Marc Zyngier 2023-01-31 9:25 ` [PATCH v8 69/69] KVM: arm64: nv: Accelerate EL0 timer read accesses when FEAT_ECV is on Marc Zyngier 2023-01-31 9:25 ` Marc Zyngier 2023-01-31 22:13 ` [PATCH v8 00/69] KVM: arm64: ARMv8.3/8.4 Nested Virtualization support Oliver Upton 2023-01-31 22:13 ` Oliver Upton 2023-01-31 22:20 ` Marc Zyngier 2023-01-31 22:20 ` Marc Zyngier
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