| Message ID | 20250117115208.1616503-1-maz@kernel.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [GIT,PULL] KVM/arm64 updates for 6.14 | expand |
On Fri, Jan 17, 2025 at 12:52 PM Marc Zyngier <maz@kernel.org> wrote: > > Paolo, > > Here's the initial set of KVM/arm64 changes for 6.14. The bulk of the > changes are around debug and protect mode, both of which are being > radically cleaned up. On the feature side, we gain support for > non-protected guests in protected mode, EL2 timer support, and some > better CoreSight support. > > The rest is the usual mix of cleanups and bug fixes. Note that this > drags two other branches: > > - arm64's for-next/cpufeature to resolve conflicts that were not > trivial to resolve > > - kvmarm-fixes-6.13-3 which was only merged in 6.13-rc7, while this > branch is firmly based on -rc3, and we had some dependencies with > it. > > As usual, gory details in the tag below. Pulled, thanks. Paolo
Paolo, Here's the initial set of KVM/arm64 changes for 6.14. The bulk of the changes are around debug and protect mode, both of which are being radically cleaned up. On the feature side, we gain support for non-protected guests in protected mode, EL2 timer support, and some better CoreSight support. The rest is the usual mix of cleanups and bug fixes. Note that this drags two other branches: - arm64's for-next/cpufeature to resolve conflicts that were not trivial to resolve - kvmarm-fixes-6.13-3 which was only merged in 6.13-rc7, while this branch is firmly based on -rc3, and we had some dependencies with it. As usual, gory details in the tag below. Please pull, M. The following changes since commit 78d4f34e2115b517bcbfe7ec0d018bbbb6f9b0b8: Linux 6.13-rc3 (2024-12-15 15:58:23 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-6.14 for you to fetch changes up to 01009b06a6b52d8439c55b530633a971c13b6cb2: arm64/sysreg: Get rid of TRFCR_ELx SysregFields (2025-01-17 11:07:55 +0000) ---------------------------------------------------------------- KVM/arm64 updates for 6.14 * New features: - Support for non-protected guest in protected mode, achieving near feature parity with the non-protected mode - Support for the EL2 timers as part of the ongoing NV support - Allow control of hardware tracing for nVHE/hVHE * Improvements, fixes and cleanups: - Massive cleanup of the debug infrastructure, making it a bit less awkward and definitely easier to maintain. This should pave the way for further optimisations - Complete rewrite of pKVM's fixed-feature infrastructure, aligning it with the rest of KVM and making the code easier to follow - Large simplification of pKVM's memory protection infrastructure - Better handling of RES0/RES1 fields for memory-backed system registers - Add a workaround for Qualcomm's Snapdragon X CPUs, which suffer from a pretty nasty timer bug - Small collection of cleanups and low-impact fixes * Dependencies - Merge arm64/for-next/cpufeature to resolve conflicts - Merge kvmarm-fixes-6.13-3 on which the non-protected memory management depends ---------------------------------------------------------------- Fuad Tabba (16): KVM: arm64: Group setting traps for protected VMs by control register KVM: arm64: Move checking protected vcpu features to a separate function KVM: arm64: Remove KVM_ARM_VCPU_POWER_OFF from protected VMs allowed features in pKVM KVM: arm64: Use KVM extension checks for allowed protected VM capabilities KVM: arm64: Initialize feature id registers for protected VMs KVM: arm64: Fix RAS trapping in pKVM for protected VMs KVM: arm64: Set protected VM traps based on its view of feature registers KVM: arm64: Rework specifying restricted features for protected VMs KVM: arm64: Remove fixed_config.h header KVM: arm64: Remove redundant setting of HCR_EL2 trap bit KVM: arm64: Calculate cptr_el2 traps on activating traps KVM: arm64: Refactor kvm_reset_cptr_el2() KVM: arm64: Fix the value of the CPTR_EL2 RES1 bitmask for nVHE KVM: arm64: Remove PtrAuth guest vcpu flag KVM: arm64: Convert the SVE guest vcpu flag to a vm flag KVM: arm64: Use kvm_vcpu_has_feature() directly for struct kvm Hardevsinh Palaniya (1): arm64/cpufeature: Refactor conditional logic in init_cpu_ftr_reg() James Clark (6): tools: arm64: Update sysreg.h header files arm64/sysreg/tools: Move TRFCR definitions to sysreg coresight: trbe: Remove redundant disable call KVM: arm64: coresight: Give TRBE enabled state to KVM KVM: arm64: Support trace filtering for guests coresight: Pass guest TRFCR value to KVM Kalesh Singh (1): arm64: kvm: Introduce nvhe stack size constants Marc Zyngier (35): arm64/sysreg: Allow a 'Mapping' descriptor for system registers arm64/sysreg: Get rid of the TCR2_EL1x SysregFields arm64/sysreg: Convert *_EL12 accessors to Mapping arm64/sysreg: Get rid of CPACR_ELx SysregFields KVM: arm64: Manage software step state at load/put KVM: arm64: Introduce __pkvm_vcpu_{load,put}() KVM: arm64: Consolidate allowed and restricted VM feature checks KVM: arm64: nv: Advertise the lack of AArch32 EL0 support KVM: arm64: nv: Add handling of EL2-specific timer registers KVM: arm64: nv: Sync nested timer state with FEAT_NV2 KVM: arm64: nv: Publish emulated timer interrupt state in the in-memory state KVM: arm64: nv: Use FEAT_ECV to trap access to EL0 timers KVM: arm64: nv: Accelerate EL0 timer read accesses when FEAT_ECV in use KVM: arm64: nv: Accelerate EL0 counter accesses from hypervisor context KVM: arm64: Handle counter access early in non-HYP context KVM: arm64: nv: Add trap routing for CNTHCTL_EL2.EL1{NVPCT,NVVCT,TVT,TVCT} KVM: arm64: nv: Propagate CNTHCTL_EL2.EL1NV{P,V}CT bits KVM: arm64: nv: Sanitise CNTHCTL_EL2 KVM: arm64: Work around x1e's CNTVOFF_EL2 bogosity KVM: arm64: nv: Document EL2 timer API Merge remote-tracking branch 'arm64/for-next/cpufeature' into kvm-arm64/pkvm-fixed-features-6.14 Merge branch kvm-arm64/debug-6.14 into kvmarm-master/next Merge branch kvm-arm64/pkvm-np-guest into kvmarm-master/next Merge branch kvm-arm64/pkvm-fixed-features-6.14 into kvmarm-master/next Merge branch 'kvmarm-fixes-6.13-3' KVM: arm64: Fix selftests after sysreg field name update KVM: arm64: nv: Always evaluate HCR_EL2 using sanitising accessors KVM: arm64: nv: Apply RESx settings to sysreg reset values KVM: arm64: nv: Fix doc header layout for timers Merge branch kvm-arm64/nv-timers into kvmarm-master/next Merge branch kvm-arm64/pkvm-memshare-declutter into kvmarm-master/next Merge branch kvm-arm64/coresight-6.14 into kvmarm-master/next Merge branch kvm-arm64/nv-resx-fixes-6.14 into kvmarm-master/next Merge branch kvm-arm64/misc-6.14 into kvmarm-master/next arm64/sysreg: Get rid of TRFCR_ELx SysregFields Mark Brown (1): KVM: arm64: Fix set_id_regs selftest for ASIDBITS becoming unwritable Mark Rutland (2): arm64: cpufeature: Add HAFT to cpucap_is_possible() KVM: arm64: Explicitly handle BRBE traps as UNDEFINED Mostafa Saleh (1): Documentation: Update the behaviour of "kvm-arm.mode" Oliver Upton (22): KVM: arm64: Add unified helper for reprogramming counters by mask KVM: arm64: Use KVM_REQ_RELOAD_PMU to handle PMCR_EL0.E change KVM: arm64: nv: Reload PMU events upon MDCR_EL2.HPME change KVM: arm64: Only apply PMCR_EL0.P to the guest range of counters KVM: arm64: Drop MDSCR_EL1_DEBUG_MASK KVM: arm64: Get rid of __kvm_get_mdcr_el2() and related warts KVM: arm64: Track presence of SPE/TRBE in kvm_host_data instead of vCPU KVM: arm64: Move host SME/SVE tracking flags to host data KVM: arm64: Write MDCR_EL2 directly from kvm_arm_setup_mdcr_el2() KVM: arm64: Evaluate debug owner at vcpu_load() KVM: arm64: Clean up KVM_SET_GUEST_DEBUG handler KVM: arm64: Select debug state to save/restore based on debug owner KVM: arm64: Remove debug tracepoints KVM: arm64: Remove vestiges of debug_ptr KVM: arm64: Use debug_owner to track if debug regs need save/restore KVM: arm64: Reload vCPU for accesses to OSLAR_EL1 KVM: arm64: Compute MDCR_EL2 at vcpu_load() KVM: arm64: Don't hijack guest context MDSCR_EL1 KVM: arm64: nv: Honor MDCR_EL2.TDE routing for debug exceptions KVM: arm64: Avoid reading ID_AA64DFR0_EL1 for debug save/restore KVM: arm64: Fold DBGxVR/DBGxCR accessors into common set KVM: arm64: Promote guest ownership for DBGxVR/DBGxCR reads Quentin Perret (21): KVM: arm64: Always check the state from hyp_ack_unshare() KVM: arm64: Change the layout of enum pkvm_page_state KVM: arm64: Move enum pkvm_page_state to memory.h KVM: arm64: Make hyp_page::order a u8 KVM: arm64: Move host page ownership tracking to the hyp vmemmap KVM: arm64: Pass walk flags to kvm_pgtable_stage2_mkyoung KVM: arm64: Pass walk flags to kvm_pgtable_stage2_relax_perms KVM: arm64: Make kvm_pgtable_stage2_init() a static inline function KVM: arm64: Add {get,put}_pkvm_hyp_vm() helpers KVM: arm64: Introduce __pkvm_host_share_guest() KVM: arm64: Introduce __pkvm_host_unshare_guest() KVM: arm64: Introduce __pkvm_host_relax_guest_perms() KVM: arm64: Introduce __pkvm_host_wrprotect_guest() KVM: arm64: Introduce __pkvm_host_test_clear_young_guest() KVM: arm64: Introduce __pkvm_host_mkyoung_guest() KVM: arm64: Introduce __pkvm_tlb_flush_vmid() KVM: arm64: Introduce the EL1 pKVM MMU KVM: arm64: Plumb the pKVM MMU in KVM KVM: arm64: Drop pkvm_mem_transition for FF-A KVM: arm64: Drop pkvm_mem_transition for host/hyp sharing KVM: arm64: Drop pkvm_mem_transition for host/hyp donations Thorsten Blum (1): KVM: arm64: vgic: Use str_enabled_disabled() in vgic_v3_probe() Vincent Donnefort (1): KVM: arm64: Fix nVHE stacktrace VA bits mask Vladimir Murzin (1): KVM: arm64: Fix FEAT_MTE in pKVM Documentation/admin-guide/kernel-parameters.txt | 16 +- Documentation/virt/kvm/devices/vcpu.rst | 14 +- arch/arm64/include/asm/cpucaps.h | 2 + arch/arm64/include/asm/cpufeature.h | 3 +- arch/arm64/include/asm/cputype.h | 2 + arch/arm64/include/asm/el2_setup.h | 6 +- arch/arm64/include/asm/kvm_arm.h | 4 +- arch/arm64/include/asm/kvm_asm.h | 14 +- arch/arm64/include/asm/kvm_emulate.h | 105 ++- arch/arm64/include/asm/kvm_host.h | 136 ++-- arch/arm64/include/asm/kvm_mmu.h | 18 + arch/arm64/include/asm/kvm_nested.h | 11 +- arch/arm64/include/asm/kvm_pgtable.h | 38 +- arch/arm64/include/asm/kvm_pkvm.h | 51 ++ arch/arm64/include/asm/memory.h | 5 +- arch/arm64/include/asm/stacktrace/nvhe.h | 2 +- arch/arm64/include/asm/sysreg.h | 16 +- arch/arm64/kernel/cpu_errata.c | 8 + arch/arm64/kernel/cpufeature.c | 17 +- arch/arm64/kernel/image-vars.h | 3 + arch/arm64/kvm/arch_timer.c | 179 ++++- arch/arm64/kvm/arm.c | 86 +- arch/arm64/kvm/at.c | 6 +- arch/arm64/kvm/debug.c | 416 ++++------ arch/arm64/kvm/emulate-nested.c | 83 +- arch/arm64/kvm/fpsimd.c | 14 +- arch/arm64/kvm/guest.c | 31 +- arch/arm64/kvm/handle_exit.c | 5 +- arch/arm64/kvm/hyp/include/hyp/debug-sr.h | 42 +- arch/arm64/kvm/hyp/include/hyp/switch.h | 43 +- arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 43 +- arch/arm64/kvm/hyp/include/nvhe/fixed_config.h | 223 ------ arch/arm64/kvm/hyp/include/nvhe/gfp.h | 6 +- arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 39 +- arch/arm64/kvm/hyp/include/nvhe/memory.h | 50 +- arch/arm64/kvm/hyp/include/nvhe/pkvm.h | 23 + arch/arm64/kvm/hyp/nvhe/debug-sr.c | 72 +- arch/arm64/kvm/hyp/nvhe/host.S | 4 +- arch/arm64/kvm/hyp/nvhe/hyp-main.c | 213 ++++- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 887 ++++++++------------- arch/arm64/kvm/hyp/nvhe/mm.c | 12 +- arch/arm64/kvm/hyp/nvhe/page_alloc.c | 14 +- arch/arm64/kvm/hyp/nvhe/pkvm.c | 410 +++++----- arch/arm64/kvm/hyp/nvhe/setup.c | 8 +- arch/arm64/kvm/hyp/nvhe/stacktrace.c | 4 +- arch/arm64/kvm/hyp/nvhe/switch.c | 54 +- arch/arm64/kvm/hyp/nvhe/sys_regs.c | 404 ++++++---- arch/arm64/kvm/hyp/nvhe/timer-sr.c | 16 +- arch/arm64/kvm/hyp/pgtable.c | 13 +- arch/arm64/kvm/hyp/vhe/debug-sr.c | 5 - arch/arm64/kvm/hyp/vhe/switch.c | 123 ++- arch/arm64/kvm/hyp/vhe/sysreg-sr.c | 4 +- arch/arm64/kvm/mmu.c | 108 ++- arch/arm64/kvm/nested.c | 38 +- arch/arm64/kvm/pkvm.c | 201 +++++ arch/arm64/kvm/pmu-emul.c | 89 +-- arch/arm64/kvm/reset.c | 6 +- arch/arm64/kvm/stacktrace.c | 9 +- arch/arm64/kvm/sys_regs.c | 443 +++++----- arch/arm64/kvm/trace_handle_exit.h | 75 -- arch/arm64/kvm/vgic/vgic-v3.c | 11 +- arch/arm64/mm/proc.S | 5 +- arch/arm64/tools/cpucaps | 1 + arch/arm64/tools/gen-sysreg.awk | 2 +- arch/arm64/tools/sysreg | 76 +- drivers/hwtracing/coresight/coresight-etm4x-core.c | 55 +- .../hwtracing/coresight/coresight-etm4x-sysfs.c | 10 +- drivers/hwtracing/coresight/coresight-etm4x.h | 2 +- drivers/hwtracing/coresight/coresight-priv.h | 3 + .../coresight/coresight-self-hosted-trace.h | 9 - drivers/hwtracing/coresight/coresight-trbe.c | 15 +- include/clocksource/arm_arch_timer.h | 6 + include/kvm/arm_arch_timer.h | 23 + include/kvm/arm_pmu.h | 6 +- tools/arch/arm64/include/asm/sysreg.h | 410 +++++++++- tools/include/linux/kasan-tags.h | 15 + .../selftests/kvm/aarch64/aarch32_id_regs.c | 2 +- tools/testing/selftests/kvm/aarch64/set_id_regs.c | 3 +- 78 files changed, 3256 insertions(+), 2370 deletions(-) delete mode 100644 arch/arm64/kvm/hyp/include/nvhe/fixed_config.h create mode 100644 tools/include/linux/kasan-tags.h