[GIT PULL] KVM/arm64 updates for 5.19

Paolo Bonzini pbonzini at redhat.com
Fri May 20 04:55:40 PDT 2022


On 5/19/22 11:27, Marc Zyngier wrote:
> 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.

Pulled, thanks.  I solved the conflict for KVM_EXIT_SYSTEM_EVENT values 
in your favor.

Paolo

> 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
> 




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