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@xxxxxxxxxxx> [1] https://gitlab.arm.com/linux-arm/kvm-unit-tests-cca cca/latest > 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
