[GIT PULL] KVM/arm64 updates for 6.12
Paolo Bonzini
pbonzini at redhat.com
Sat Sep 14 06:33:17 PDT 2024
On Thu, Sep 12, 2024 at 11:12 AM Marc Zyngier <maz at kernel.org> wrote:
>
> 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].
Pulled, thanks.
Paolo
> Please pull,
>
> M.
>
> [1] https://lore.kernel.org/linux-next/20240905160856.14e95d14@canb.auug.org.au
>
> 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
>
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