Hi Paolo, Here's the set of KVM/arm64 changes 6.12. The only two user-visible features are FP8 support and the new Stage-2 page-table dumper. The NV onslaught continues with the addition of the address translation instruction emulation, and we have a bunch of fixes all over the place (details in the tag text below). Note that there is a very minor conflict with arm64 in -next, which is trivially resolved as [1]. Please pull, M. [1] https://lore.kernel.org/linux-next/20240905160856.14e95d14@xxxxxxxxxxxxxxxx The following changes since commit 5be63fc19fcaa4c236b307420483578a56986a37: Linux 6.11-rc5 (2024-08-25 19:07:11 +1200) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-6.12 for you to fetch changes up to 17a0005644994087794f6552d7a5e105d6976184: Merge branch kvm-arm64/visibility-cleanups into kvmarm-master/next (2024-09-12 08:38:17 +0100) ---------------------------------------------------------------- KVM/arm64 updates for 6.12 * New features: - Add a Stage-2 page table dumper, reusing the main ptdump infrastructure, and allowing easier debugging of the our page-table infrastructure - Add FP8 support to the KVM/arm64 floating point handling. - Add NV support for the AT family of instructions, which mostly results in adding a page table walker that deals with most of the complexity of the architecture. * Improvements, fixes and cleanups: - Add selftest checks for a bunch of timer emulation corner cases - Fix the multiple of cases where KVM/arm64 doesn't correctly handle the guest trying to use a GICv3 that isn't advertised - Remove REG_HIDDEN_USER from the sysreg infrastructure, making things little more simple - Prevent MTE tags being restored by userspace if we are actively logging writes, as that's a recipe for disaster - Correct the refcount on a page that is not considered for MTE tag copying (such as a device) - Relax the synchronisation when walking a page table to split block mappings, moving it at the end the walk, as there is no need to perform it on every store. - Fix boundary check when transfering memory using FFA - Fix pKVM TLB invalidation, only affecting currently out of tree code but worth addressing for peace of mind ---------------------------------------------------------------- Colton Lewis (3): KVM: arm64: Move data barrier to end of split walk KVM: arm64: selftests: Ensure pending interrupts are handled in arch_timer test KVM: arm64: selftests: Add arch_timer_edge_cases selftest Joey Gouly (1): KVM: arm64: Make kvm_at() take an OP_AT_* Marc Zyngier (47): KVM: arm64: Move SVCR into the sysreg array KVM: arm64: Add predicate for FPMR support in a VM KVM: arm64: Move FPMR into the sysreg array KVM: arm64: Add save/restore support for FPMR KVM: arm64: Honor trap routing for FPMR KVM: arm64: Expose ID_AA64FPFR0_EL1 as a writable ID reg KVM: arm64: Enable FP8 support when available and configured KVM: arm64: Expose ID_AA64PFR2_EL1 to userspace and guests Merge branch kvm-arm64/tlbi-fixes-6.12 into kvmarm-master/next KVM: arm64: Move GICv3 trap configuration to kvm_calculate_traps() KVM: arm64: Force SRE traps when SRE access is not enabled KVM: arm64: Force GICv3 trap activation when no irqchip is configured on VHE KVM: arm64: Add helper for last ditch idreg adjustments KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is presented to the guest KVM: arm64: Add ICH_HCR_EL2 to the vcpu state KVM: arm64: Add trap routing information for ICH_HCR_EL2 KVM: arm64: Honor guest requested traps in GICv3 emulation KVM: arm64: Make most GICv3 accesses UNDEF if they trap KVM: arm64: Unify UNDEF injection helpers KVM: arm64: Add selftest checking how the absence of GICv3 is handled arm64: Add missing APTable and TCR_ELx.HPD masks arm64: Add PAR_EL1 field description arm64: Add system register encoding for PSTATE.PAN arm64: Add ESR_ELx_FSC_ADDRSZ_L() helper KVM: arm64: nv: Enforce S2 alignment when contiguous bit is set KVM: arm64: nv: Turn upper_attr for S2 walk into the full descriptor KVM: arm64: nv: Honor absence of FEAT_PAN2 KVM: arm64: nv: Add basic emulation of AT S1E{0,1}{R,W} KVM: arm64: nv: Add basic emulation of AT S1E1{R,W}P KVM: arm64: nv: Add basic emulation of AT S1E2{R,W} KVM: arm64: nv: Add emulation of AT S12E{0,1}{R,W} KVM: arm64: nv: Make ps_to_output_size() generally available KVM: arm64: nv: Add SW walker for AT S1 emulation KVM: arm64: nv: Sanitise SCTLR_EL1.EPAN according to VM configuration KVM: arm64: nv: Make AT+PAN instructions aware of FEAT_PAN3 KVM: arm64: nv: Plumb handling of AT S1* traps from EL2 KVM: arm64: nv: Add support for FEAT_ATS1A KVM: arm64: Simplify handling of CNTKCTL_EL12 KVM: arm64: Simplify visibility handling of AArch32 SPSR_* KVM: arm64: Get rid of REG_HIDDEN_USER visibility qualifier Merge branch kvm-arm64/mmu-misc-6.12 into kvmarm-master/next Merge branch kvm-arm64/fpmr into kvmarm-master/next Merge branch kvm-arm64/vgic-sre-traps into kvmarm-master/next Merge branch kvm-arm64/selftests-6.12 into kvmarm-master/next Merge branch kvm-arm64/nv-at-pan into kvmarm-master/next Merge branch kvm-arm64/s2-ptdump into kvmarm-master/next Merge branch kvm-arm64/visibility-cleanups into kvmarm-master/next Oliver Upton (1): KVM: arm64: selftests: Cope with lack of GICv3 in set_id_regs Sean Christopherson (2): KVM: arm64: Release pfn, i.e. put page, if copying MTE tags hits ZONE_DEVICE KVM: arm64: Disallow copying MTE to guest memory while KVM is dirty logging Sebastian Ene (5): KVM: arm64: Move pagetable definitions to common header arm64: ptdump: Expose the attribute parsing functionality arm64: ptdump: Use the ptdump description from a local context arm64: ptdump: Don't override the level when operating on the stage-2 tables KVM: arm64: Register ptdump with debugfs on guest creation Snehal Koukuntla (1): KVM: arm64: Add memory length checks and remove inline in do_ffa_mem_xfer Will Deacon (2): KVM: arm64: Invalidate EL1&0 TLB entries for all VMIDs in nvhe hyp init KVM: arm64: Ensure TLBI uses correct VMID after changing context arch/arm64/include/asm/esr.h | 5 +- arch/arm64/include/asm/kvm_arm.h | 1 + arch/arm64/include/asm/kvm_asm.h | 6 +- arch/arm64/include/asm/kvm_host.h | 22 +- arch/arm64/include/asm/kvm_mmu.h | 6 + arch/arm64/include/asm/kvm_nested.h | 40 +- arch/arm64/include/asm/kvm_pgtable.h | 42 + arch/arm64/include/asm/pgtable-hwdef.h | 9 + arch/arm64/include/asm/ptdump.h | 43 +- arch/arm64/include/asm/sysreg.h | 22 + arch/arm64/kvm/Kconfig | 17 + arch/arm64/kvm/Makefile | 3 +- arch/arm64/kvm/arm.c | 15 +- arch/arm64/kvm/at.c | 1101 ++++++++++++++++++++ arch/arm64/kvm/emulate-nested.c | 81 +- arch/arm64/kvm/fpsimd.c | 5 +- arch/arm64/kvm/guest.c | 6 + arch/arm64/kvm/hyp/include/hyp/fault.h | 2 +- arch/arm64/kvm/hyp/include/hyp/switch.h | 3 + arch/arm64/kvm/hyp/nvhe/ffa.c | 21 +- arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +- arch/arm64/kvm/hyp/nvhe/hyp-main.c | 9 + arch/arm64/kvm/hyp/nvhe/switch.c | 9 + arch/arm64/kvm/hyp/nvhe/tlb.c | 6 +- arch/arm64/kvm/hyp/pgtable.c | 48 +- arch/arm64/kvm/hyp/vgic-v3-sr.c | 97 +- arch/arm64/kvm/hyp/vhe/switch.c | 3 + arch/arm64/kvm/nested.c | 55 +- arch/arm64/kvm/ptdump.c | 268 +++++ arch/arm64/kvm/sys_regs.c | 386 ++++--- arch/arm64/kvm/sys_regs.h | 23 +- arch/arm64/kvm/vgic/vgic-v3.c | 12 + arch/arm64/kvm/vgic/vgic.c | 14 +- arch/arm64/kvm/vgic/vgic.h | 6 +- arch/arm64/mm/ptdump.c | 70 +- tools/testing/selftests/kvm/Makefile | 2 + .../selftests/kvm/aarch64/arch_timer_edge_cases.c | 1062 +++++++++++++++++++ tools/testing/selftests/kvm/aarch64/no-vgic-v3.c | 175 ++++ tools/testing/selftests/kvm/aarch64/set_id_regs.c | 1 + tools/testing/selftests/kvm/aarch64/vgic_irq.c | 11 +- .../selftests/kvm/include/aarch64/arch_timer.h | 18 +- .../selftests/kvm/include/aarch64/processor.h | 3 + .../testing/selftests/kvm/lib/aarch64/processor.c | 6 + 43 files changed, 3405 insertions(+), 331 deletions(-) create mode 100644 arch/arm64/kvm/at.c create mode 100644 arch/arm64/kvm/ptdump.c create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer_edge_cases.c create mode 100644 tools/testing/selftests/kvm/aarch64/no-vgic-v3.c
