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Message-ID: <f1cdef31-1427-48ea-a741-a48e8b366093@arm.com> Date: Fri, 27 Jun 2025 11:37:38 +0100 From: Steven Price <steven.price@....com> To: "Emi Kisanuki (Fujitsu)" <fj0570is@...itsu.com>, "'kvm@...r.kernel.org'" <kvm@...r.kernel.org>, "'kvmarm@...ts.linux.dev'" <kvmarm@...ts.linux.dev> Cc: 'Catalin Marinas' <catalin.marinas@....com>, 'Marc Zyngier' <maz@...nel.org>, 'Will Deacon' <will@...nel.org>, 'James Morse' <james.morse@....com>, 'Oliver Upton' <oliver.upton@...ux.dev>, 'Suzuki K Poulose' <suzuki.poulose@....com>, 'Zenghui Yu' <yuzenghui@...wei.com>, "'linux-arm-kernel@...ts.infradead.org'" <linux-arm-kernel@...ts.infradead.org>, "'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>, 'Joey Gouly' <joey.gouly@....com>, 'Alexandru Elisei' <alexandru.elisei@....com>, 'Christoffer Dall' <christoffer.dall@....com>, 'Fuad Tabba' <tabba@...gle.com>, "'linux-coco@...ts.linux.dev'" <linux-coco@...ts.linux.dev>, 'Ganapatrao Kulkarni' <gankulkarni@...amperecomputing.com>, 'Gavin Shan' <gshan@...hat.com>, 'Shanker Donthineni' <sdonthineni@...dia.com>, 'Alper Gun' <alpergun@...gle.com>, "'Aneesh Kumar K . V'" <aneesh.kumar@...nel.org> Subject: Re: [PATCH v9 00/43] arm64: Support for Arm CCA in KVM On 25/06/2025 02:51, Emi Kisanuki (Fujitsu) wrote: > We tested this patch in our internal simulator which is a hardware simulator for Fujitsu's next generation CPU known as Monaka. and it produced the expected results. > > I have verified the following > 1. Launching the realm VM using Internal simulator -> Successfully launched by disabling MPAM support in the ID register. > 2. Running kvm-unit-tests (with lkvm) -> All tests passed except for PMU (as expected, since PMU is not supported by the Internal simulator).[1] > > Tested-by: Emi Kisanuki <fj0570is@...itsu.com> [1] https://gitlab.arm.com/linux-arm/kvm-unit-tests-cca cca/latest Thank you for testing! Regards, Steve > >> This series adds support for running protected VMs using KVM under the Arm >> Confidential Compute Architecture (CCA). >> >> The related guest support was merged for v6.14-rc1 so you no longer need that >> separately. >> >> There are a few changes since v8, many thanks for the review comments. The >> highlights are below, and individual patches have a changelog. >> >> * NV support is now upstream, so this series no longer conflicts. >> >> * Tidied up RTT accounting by providing wrapper functions to call >> kvm_account_pgtable_pages() only when appropriate. >> >> * Propagate the 'may_block' flag to enable cond_resched calls only when >> appropriate. >> >> * Reduce code duplication between INIT_RIPAS and SET_RIPAS. >> >> * Various code improvements from the reviews - many thanks! >> >> * Rebased onto v6.16-rc1. >> >> Things to note: >> >> * The magic numbers for capabilities and ioctls have been updated. So >> you'll need to update your VMM. See below for update kvmtool branch. >> >> * Patch 42 increases KVM_VCPU_MAX_FEATURES to expose the new feature. >> >> The ABI to the RMM (the RMI) is based on RMM v1.0-rel0 specification[1]. >> >> This series is based on v6.16-rc1. It is also available as a git >> repository: >> >> https://gitlab.arm.com/linux-arm/linux-cca cca-host/v9 >> >> Work in progress changes for kvmtool are available from the git repository below: >> >> https://gitlab.arm.com/linux-arm/kvmtool-cca cca/v7 >> >> [1] https://developer.arm.com/documentation/den0137/1-0rel0/ >> >> Jean-Philippe Brucker (7): >> arm64: RME: Propagate number of breakpoints and watchpoints to >> userspace >> arm64: RME: Set breakpoint parameters through SET_ONE_REG >> arm64: RME: Initialize PMCR.N with number counter supported by RMM >> arm64: RME: Propagate max SVE vector length from RMM >> arm64: RME: Configure max SVE vector length for a Realm >> arm64: RME: Provide register list for unfinalized RME RECs >> arm64: RME: Provide accurate register list >> >> Joey Gouly (2): >> arm64: RME: allow userspace to inject aborts >> arm64: RME: support RSI_HOST_CALL >> >> Steven Price (31): >> arm64: RME: Handle Granule Protection Faults (GPFs) >> arm64: RME: Add SMC definitions for calling the RMM >> arm64: RME: Add wrappers for RMI calls >> arm64: RME: Check for RME support at KVM init >> arm64: RME: Define the user ABI >> arm64: RME: ioctls to create and configure realms >> KVM: arm64: Allow passing machine type in KVM creation >> arm64: RME: RTT tear down >> arm64: RME: Allocate/free RECs to match vCPUs >> KVM: arm64: vgic: Provide helper for number of list registers >> arm64: RME: Support for the VGIC in realms >> KVM: arm64: Support timers in realm RECs >> arm64: RME: Allow VMM to set RIPAS >> arm64: RME: Handle realm enter/exit >> arm64: RME: Handle RMI_EXIT_RIPAS_CHANGE >> KVM: arm64: Handle realm MMIO emulation >> arm64: RME: Allow populating initial contents >> arm64: RME: Runtime faulting of memory >> KVM: arm64: Handle realm VCPU load >> KVM: arm64: Validate register access for a Realm VM >> KVM: arm64: Handle Realm PSCI requests >> KVM: arm64: WARN on injected undef exceptions >> arm64: Don't expose stolen time for realm guests >> arm64: RME: Always use 4k pages for realms >> arm64: RME: Prevent Device mappings for Realms >> arm_pmu: Provide a mechanism for disabling the physical IRQ >> arm64: RME: Enable PMU support with a realm guest >> arm64: RME: Hide KVM_CAP_READONLY_MEM for realm guests >> KVM: arm64: Expose support for private memory >> KVM: arm64: Expose KVM_ARM_VCPU_REC to user space >> KVM: arm64: Allow activating realms >> >> Suzuki K Poulose (3): >> kvm: arm64: Include kvm_emulate.h in kvm/arm_psci.h >> kvm: arm64: Don't expose debug capabilities for realm guests >> arm64: RME: Allow checking SVE on VM instance >> >> Documentation/virt/kvm/api.rst | 94 +- >> arch/arm64/include/asm/kvm_emulate.h | 40 + >> arch/arm64/include/asm/kvm_host.h | 17 +- >> arch/arm64/include/asm/kvm_rme.h | 139 ++ >> arch/arm64/include/asm/rmi_cmds.h | 508 ++++++++ >> arch/arm64/include/asm/rmi_smc.h | 268 ++++ >> arch/arm64/include/asm/virt.h | 1 + >> arch/arm64/include/uapi/asm/kvm.h | 49 + >> arch/arm64/kvm/Kconfig | 1 + >> arch/arm64/kvm/Makefile | 3 +- >> arch/arm64/kvm/arch_timer.c | 48 +- >> arch/arm64/kvm/arm.c | 168 ++- >> arch/arm64/kvm/guest.c | 108 +- >> arch/arm64/kvm/hypercalls.c | 4 +- >> arch/arm64/kvm/inject_fault.c | 5 +- >> arch/arm64/kvm/mmio.c | 16 +- >> arch/arm64/kvm/mmu.c | 207 ++- >> arch/arm64/kvm/pmu-emul.c | 6 + >> arch/arm64/kvm/psci.c | 30 + >> arch/arm64/kvm/reset.c | 23 +- >> arch/arm64/kvm/rme-exit.c | 207 +++ >> arch/arm64/kvm/rme.c | 1743 >> ++++++++++++++++++++++++++ >> arch/arm64/kvm/sys_regs.c | 53 +- >> arch/arm64/kvm/vgic/vgic-init.c | 2 +- >> arch/arm64/kvm/vgic/vgic-v3.c | 6 +- >> arch/arm64/kvm/vgic/vgic.c | 60 +- >> arch/arm64/mm/fault.c | 31 +- >> drivers/perf/arm_pmu.c | 15 + >> include/kvm/arm_arch_timer.h | 2 + >> include/kvm/arm_pmu.h | 4 + >> include/kvm/arm_psci.h | 2 + >> include/linux/perf/arm_pmu.h | 5 + >> include/uapi/linux/kvm.h | 29 +- >> 33 files changed, 3790 insertions(+), 104 deletions(-) create mode 100644 >> arch/arm64/include/asm/kvm_rme.h create mode 100644 >> arch/arm64/include/asm/rmi_cmds.h create mode 100644 >> arch/arm64/include/asm/rmi_smc.h create mode 100644 >> arch/arm64/kvm/rme-exit.c create mode 100644 arch/arm64/kvm/rme.c >> >> -- >> 2.43.0 >
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