Hi Paolo,
Here's the bulk of the KVM/arm64 updates for 5.19. Major features are
guard pages for the EL2 stacks, save/restore of the guest-visible
hypercall configuration and PSCI suspend support. Further details in
the tag description.
Note that this PR contains a shared branch with the arm64 tree
containing the SME patches to resolve conflicts with the WFxT support
branch.
Please pull,
M.
The following changes since commit 672c0c5173427e6b3e2a9bbb7be51ceeec78093a:
Linux 5.18-rc5 (2022-05-01 13:57:58 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-5.19
for you to fetch changes up to 5c0ad551e9aa6188f2bda0977c1cb6768a2b74ef:
Merge branch kvm-arm64/its-save-restore-fixes-5.19 into kvmarm-master/next (2022-05-16 17:48:36 +0100)
----------------------------------------------------------------
KVM/arm64 updates for 5.19
- Add support for the ARMv8.6 WFxT extension
- Guard pages for the EL2 stacks
- Trap and emulate AArch32 ID registers to hide unsupported features
- Ability to select and save/restore the set of hypercalls exposed
to the guest
- Support for PSCI-initiated suspend in collaboration with userspace
- GICv3 register-based LPI invalidation support
- Move host PMU event merging into the vcpu data structure
- GICv3 ITS save/restore fixes
- The usual set of small-scale cleanups and fixes
----------------------------------------------------------------
Alexandru Elisei (3):
KVM: arm64: Hide AArch32 PMU registers when not available
KVM: arm64: Don't BUG_ON() if emulated register table is unsorted
KVM: arm64: Print emulated register table name when it is unsorted
Ard Biesheuvel (1):
KVM: arm64: Avoid unnecessary absolute addressing via literals
Fuad Tabba (4):
KVM: arm64: Wrapper for getting pmu_events
KVM: arm64: Repack struct kvm_pmu to reduce size
KVM: arm64: Pass pmu events to hyp via vcpu
KVM: arm64: Reenable pmu in Protected Mode
Kalesh Singh (6):
KVM: arm64: Introduce hyp_alloc_private_va_range()
KVM: arm64: Introduce pkvm_alloc_private_va_range()
KVM: arm64: Add guard pages for KVM nVHE hypervisor stack
KVM: arm64: Add guard pages for pKVM (protected nVHE) hypervisor stack
KVM: arm64: Detect and handle hypervisor stack overflows
KVM: arm64: Symbolize the nVHE HYP addresses
Marc Zyngier (30):
arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition
arm64: Add RV and RN fields for ESR_ELx_WFx_ISS
arm64: Add HWCAP advertising FEAT_WFXT
arm64: Add wfet()/wfit() helpers
arm64: Use WFxT for __delay() when possible
KVM: arm64: Simplify kvm_cpu_has_pending_timer()
KVM: arm64: Introduce kvm_counter_compute_delta() helper
KVM: arm64: Handle blocking WFIT instruction
KVM: arm64: Offer early resume for non-blocking WFxT instructions
KVM: arm64: Expose the WFXT feature to guests
KVM: arm64: Fix new instances of 32bit ESRs
Merge remote-tracking branch 'arm64/for-next/sme' into kvmarm-master/next
Merge branch kvm-arm64/wfxt into kvmarm-master/next
Merge branch kvm-arm64/hyp-stack-guard into kvmarm-master/next
Merge branch kvm-arm64/aarch32-idreg-trap into kvmarm-master/next
Documentation: Fix index.rst after psci.rst renaming
irqchip/gic-v3: Exposes bit values for GICR_CTLR.{IR, CES}
KVM: arm64: vgic-v3: Expose GICR_CTLR.RWP when disabling LPIs
KVM: arm64: vgic-v3: Implement MMIO-based LPI invalidation
KVM: arm64: vgic-v3: Advertise GICR_CTLR.{IR, CES} as a new GICD_IIDR revision
KVM: arm64: vgic-v3: List M1 Pro/Max as requiring the SEIS workaround
KVM: arm64: Hide KVM_REG_ARM_*_BMAP_BIT_COUNT from userspace
KVM: arm64: pmu: Restore compilation when HW_PERF_EVENTS isn't selected
KVM: arm64: Fix hypercall bitmap writeback when vcpus have already run
Merge branch kvm-arm64/hcall-selection into kvmarm-master/next
Merge branch kvm-arm64/psci-suspend into kvmarm-master/next
Merge branch kvm-arm64/vgic-invlpir into kvmarm-master/next
Merge branch kvm-arm64/per-vcpu-host-pmu-data into kvmarm-master/next
Merge branch kvm-arm64/misc-5.19 into kvmarm-master/next
Merge branch kvm-arm64/its-save-restore-fixes-5.19 into kvmarm-master/next
Mark Brown (25):
arm64/sme: Provide ABI documentation for SME
arm64/sme: System register and exception syndrome definitions
arm64/sme: Manually encode SME instructions
arm64/sme: Early CPU setup for SME
arm64/sme: Basic enumeration support
arm64/sme: Identify supported SME vector lengths at boot
arm64/sme: Implement sysctl to set the default vector length
arm64/sme: Implement vector length configuration prctl()s
arm64/sme: Implement support for TPIDR2
arm64/sme: Implement SVCR context switching
arm64/sme: Implement streaming SVE context switching
arm64/sme: Implement ZA context switching
arm64/sme: Implement traps and syscall handling for SME
arm64/sme: Disable ZA and streaming mode when handling signals
arm64/sme: Implement streaming SVE signal handling
arm64/sme: Implement ZA signal handling
arm64/sme: Implement ptrace support for streaming mode SVE registers
arm64/sme: Add ptrace support for ZA
arm64/sme: Disable streaming mode and ZA when flushing CPU state
arm64/sme: Save and restore streaming mode over EFI runtime calls
KVM: arm64: Hide SME system registers from guests
KVM: arm64: Trap SME usage in guest
KVM: arm64: Handle SME host state when running guests
arm64/sme: Provide Kconfig for SME
arm64/sme: Add ID_AA64SMFR0_EL1 to __read_sysreg_by_encoding()
Oliver Upton (21):
KVM: arm64: Return a bool from emulate_cp()
KVM: arm64: Don't write to Rt unless sys_reg emulation succeeds
KVM: arm64: Wire up CP15 feature registers to their AArch64 equivalents
KVM: arm64: Plumb cp10 ID traps through the AArch64 sysreg handler
KVM: arm64: Start trapping ID registers for 32 bit guests
selftests: KVM: Rename psci_cpu_on_test to psci_test
selftests: KVM: Create helper for making SMCCC calls
KVM: arm64: Don't depend on fallthrough to hide SYSTEM_RESET2
KVM: arm64: Dedupe vCPU power off helpers
KVM: arm64: Track vCPU power state using MP state values
KVM: arm64: Rename the KVM_REQ_SLEEP handler
KVM: arm64: Return a value from check_vcpu_requests()
KVM: arm64: Add support for userspace to suspend a vCPU
KVM: arm64: Implement PSCI SYSTEM_SUSPEND
selftests: KVM: Rename psci_cpu_on_test to psci_test
selftests: KVM: Create helper for making SMCCC calls
selftests: KVM: Use KVM_SET_MP_STATE to power off vCPU in psci_test
selftests: KVM: Refactor psci_test to make it amenable to new tests
selftests: KVM: Test SYSTEM_SUSPEND PSCI call
KVM: arm64: pkvm: Drop unnecessary FP/SIMD trap handler
KVM: arm64: pkvm: Don't mask already zeroed FEAT_SVE
Raghavendra Rao Ananta (9):
KVM: arm64: Factor out firmware register handling from psci.c
KVM: arm64: Setup a framework for hypercall bitmap firmware registers
KVM: arm64: Add standard hypervisor firmware register
KVM: arm64: Add vendor hypervisor firmware register
Docs: KVM: Rename psci.rst to hypercalls.rst
Docs: KVM: Add doc for the bitmap firmware registers
tools: Import ARM SMCCC definitions
selftests: KVM: aarch64: Introduce hypercall ABI test
selftests: KVM: aarch64: Add the bitmap firmware registers to get-reg-list
Randy Dunlap (1):
KVM: arm64: nvhe: Eliminate kernel-doc warnings
Ricardo Koller (4):
KVM: arm64: vgic: Check that new ITEs could be saved in guest memory
KVM: arm64: vgic: Add more checks when restoring ITS tables
KVM: arm64: vgic: Do not ignore vgic_its_restore_cte failures
KVM: arm64: vgic: Undo work in failed ITS restores
Stephen Rothwell (1):
Documentation: KVM: Fix title level for PSCI_SUSPEND
Wan Jiabing (1):
arm64/sme: Fix NULL check after kzalloc
Documentation/arm64/cpu-feature-registers.rst | 2 +
Documentation/arm64/elf_hwcaps.rst | 37 ++
Documentation/arm64/index.rst | 1 +
Documentation/arm64/sme.rst | 428 +++++++++++++++
Documentation/arm64/sve.rst | 70 ++-
Documentation/virt/kvm/api.rst | 94 +++-
Documentation/virt/kvm/arm/hypercalls.rst | 138 +++++
Documentation/virt/kvm/arm/index.rst | 2 +-
Documentation/virt/kvm/arm/psci.rst | 77 ---
arch/arm64/Kconfig | 11 +
arch/arm64/include/asm/barrier.h | 4 +
arch/arm64/include/asm/cpu.h | 4 +
arch/arm64/include/asm/cpufeature.h | 24 +
arch/arm64/include/asm/cputype.h | 8 +
arch/arm64/include/asm/el2_setup.h | 64 ++-
arch/arm64/include/asm/esr.h | 21 +-
arch/arm64/include/asm/exception.h | 1 +
arch/arm64/include/asm/fpsimd.h | 123 ++++-
arch/arm64/include/asm/fpsimdmacros.h | 87 +++
arch/arm64/include/asm/hwcap.h | 9 +
arch/arm64/include/asm/kvm_arm.h | 4 +-
arch/arm64/include/asm/kvm_asm.h | 1 +
arch/arm64/include/asm/kvm_emulate.h | 7 -
arch/arm64/include/asm/kvm_host.h | 45 +-
arch/arm64/include/asm/kvm_mmu.h | 3 +
arch/arm64/include/asm/processor.h | 26 +-
arch/arm64/include/asm/sysreg.h | 67 +++
arch/arm64/include/asm/thread_info.h | 2 +
arch/arm64/include/uapi/asm/hwcap.h | 9 +
arch/arm64/include/uapi/asm/kvm.h | 34 ++
arch/arm64/include/uapi/asm/ptrace.h | 69 ++-
arch/arm64/include/uapi/asm/sigcontext.h | 55 +-
arch/arm64/kernel/cpufeature.c | 120 +++++
arch/arm64/kernel/cpuinfo.c | 14 +
arch/arm64/kernel/entry-common.c | 11 +
arch/arm64/kernel/entry-fpsimd.S | 36 ++
arch/arm64/kernel/fpsimd.c | 585 +++++++++++++++++++--
arch/arm64/kernel/process.c | 44 +-
arch/arm64/kernel/ptrace.c | 358 +++++++++++--
arch/arm64/kernel/signal.c | 188 ++++++-
arch/arm64/kernel/syscall.c | 29 +-
arch/arm64/kernel/traps.c | 1 +
arch/arm64/kvm/Makefile | 4 +-
arch/arm64/kvm/arch_timer.c | 47 +-
arch/arm64/kvm/arm.c | 158 +++++-
arch/arm64/kvm/fpsimd.c | 43 +-
arch/arm64/kvm/guest.c | 10 +-
arch/arm64/kvm/handle_exit.c | 49 +-
arch/arm64/kvm/hyp/include/nvhe/mm.h | 6 +-
arch/arm64/kvm/hyp/nvhe/host.S | 32 +-
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 18 +-
arch/arm64/kvm/hyp/nvhe/mm.c | 78 ++-
arch/arm64/kvm/hyp/nvhe/setup.c | 31 +-
arch/arm64/kvm/hyp/nvhe/switch.c | 87 +--
arch/arm64/kvm/hyp/nvhe/sys_regs.c | 3 -
arch/arm64/kvm/hyp/vhe/switch.c | 11 +-
arch/arm64/kvm/hypercalls.c | 327 +++++++++++-
arch/arm64/kvm/mmu.c | 68 ++-
arch/arm64/kvm/pmu-emul.c | 3 +-
arch/arm64/kvm/pmu.c | 40 +-
arch/arm64/kvm/psci.c | 248 ++-------
arch/arm64/kvm/sys_regs.c | 305 ++++++++---
arch/arm64/kvm/sys_regs.h | 9 +-
arch/arm64/kvm/vgic/vgic-init.c | 7 +-
arch/arm64/kvm/vgic/vgic-its.c | 160 ++++--
arch/arm64/kvm/vgic/vgic-mmio-v2.c | 18 +-
arch/arm64/kvm/vgic/vgic-mmio-v3.c | 125 ++++-
arch/arm64/kvm/vgic/vgic-v3.c | 4 +
arch/arm64/kvm/vgic/vgic.h | 10 +
arch/arm64/lib/delay.c | 12 +-
arch/arm64/tools/cpucaps | 3 +
include/kvm/arm_arch_timer.h | 2 -
include/kvm/arm_hypercalls.h | 8 +
include/kvm/arm_pmu.h | 34 +-
include/kvm/arm_psci.h | 7 -
include/kvm/arm_vgic.h | 8 +-
include/linux/irqchip/arm-gic-v3.h | 2 +
include/uapi/linux/elf.h | 2 +
include/uapi/linux/kvm.h | 4 +
include/uapi/linux/prctl.h | 9 +
kernel/sys.c | 12 +
scripts/kallsyms.c | 3 +-
tools/include/linux/arm-smccc.h | 193 +++++++
tools/testing/selftests/kvm/.gitignore | 3 +-
tools/testing/selftests/kvm/Makefile | 3 +-
tools/testing/selftests/kvm/aarch64/get-reg-list.c | 8 +
tools/testing/selftests/kvm/aarch64/hypercalls.c | 336 ++++++++++++
.../selftests/kvm/aarch64/psci_cpu_on_test.c | 121 -----
tools/testing/selftests/kvm/aarch64/psci_test.c | 213 ++++++++
.../selftests/kvm/include/aarch64/processor.h | 22 +
.../testing/selftests/kvm/lib/aarch64/processor.c | 25 +
tools/testing/selftests/kvm/steal_time.c | 13 +-
92 files changed, 4949 insertions(+), 908 deletions(-)
create mode 100644 Documentation/arm64/sme.rst
create mode 100644 Documentation/virt/kvm/arm/hypercalls.rst
delete mode 100644 Documentation/virt/kvm/arm/psci.rst
create mode 100644 tools/include/linux/arm-smccc.h
create mode 100644 tools/testing/selftests/kvm/aarch64/hypercalls.c
delete mode 100644 tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c
create mode 100644 tools/testing/selftests/kvm/aarch64/psci_test.c
