Hi folks, This is hopefully the last take on the 'writable' ID registers series. The patches have been sitting on the mailing list for years in some form and it seems like we're approaching critical mass in terms of interest in the feature. I've taken Jing's series and applied some cleanups to get things in order for 6.7. v9 -> v10: - Picked up the latest KVM_ARM_GET_REG_WRITABLE_MASKS patch - Cleaned up the initializer macros for sys_reg_descs - Aggressively masked-out features that make no sense to modify - Added ZFR0 and the ISAR registers to the mix - Added documentation on how userspace is expected to use all the UAPI v9: https://lore.kernel.org/kvmarm/20230821212243.491660-1-jingzhangos@xxxxxxxxxx/ Jing Zhang (7): KVM: arm64: Allow userspace to get the writable masks for feature ID registers KVM: arm64: Document KVM_ARM_GET_REG_WRITABLE_MASKS KVM: arm64: Use guest ID register values for the sake of emulation KVM: arm64: Allow userspace to change ID_AA64MMFR{0-2}_EL1 KVM: arm64: Allow userspace to change ID_AA64PFR0_EL1 KVM: arm64: selftests: Import automatic generation of sysreg defs KVM: arm64: selftests: Test for setting ID register from usersapce Oliver Upton (5): KVM: arm64: Reject attempts to set invalid debug arch version KVM: arm64: Bump up the default KVM sanitised debug version to v8p8 KVM: arm64: Allow userspace to change ID_AA64ISAR{0-2}_EL1 KVM: arm64: Allow userspace to change ID_AA64ZFR0_EL1 KVM: arm64: Document vCPU feature selection UAPIs Documentation/virt/kvm/api.rst | 43 + Documentation/virt/kvm/arm/index.rst | 1 + Documentation/virt/kvm/arm/vcpu-features.rst | 47 + arch/arm64/include/asm/kvm_host.h | 2 + arch/arm64/include/uapi/asm/kvm.h | 32 + arch/arm64/kvm/arm.c | 10 + arch/arm64/kvm/sys_regs.c | 185 +- include/uapi/linux/kvm.h | 2 + tools/arch/arm64/include/.gitignore | 1 + tools/arch/arm64/include/asm/gpr-num.h | 26 + tools/arch/arm64/include/asm/sysreg.h | 839 ++---- tools/arch/arm64/tools/gen-sysreg.awk | 336 +++ tools/arch/arm64/tools/sysreg | 2497 +++++++++++++++++ tools/testing/selftests/kvm/Makefile | 15 +- .../selftests/kvm/aarch64/aarch32_id_regs.c | 4 +- .../selftests/kvm/aarch64/debug-exceptions.c | 12 +- .../selftests/kvm/aarch64/page_fault_test.c | 6 +- .../selftests/kvm/aarch64/set_id_regs.c | 478 ++++ .../selftests/kvm/lib/aarch64/processor.c | 6 +- 19 files changed, 3853 insertions(+), 689 deletions(-) create mode 100644 Documentation/virt/kvm/arm/vcpu-features.rst create mode 100644 tools/arch/arm64/include/.gitignore create mode 100644 tools/arch/arm64/include/asm/gpr-num.h create mode 100755 tools/arch/arm64/tools/gen-sysreg.awk create mode 100644 tools/arch/arm64/tools/sysreg create mode 100644 tools/testing/selftests/kvm/aarch64/set_id_regs.c base-commit: ce9ecca0238b140b88f43859b211c9fdfd8e5b70 -- 2.42.0.515.g380fc7ccd1-goog
