[PATCH v3 00/16] KVM: arm64: nv: Shadow stage-2 page table handling

Marc Zyngier
2024-06-14T14:46:15Z

Here's the thurd version of the shadow stage-2 handling for NV
support on arm64.

* From v2 [2]

- Simplified the S2 walker by dropping a bunch of redundant
fields from the walker info structure

- Added some more lockdep assertions (Oliver)

- Added more precise comments for the TTL-like annotations
in the shadow S2 (Oliver)

* From v1 [1]

- Reworked the allocation of shadow S2 structures at init time to be
slightly clearer

- Lots of small cleanups

- Rebased on v6.10-rc1

[1] https://lore.kernel.org/r/20240409175448.3507472-1-maz@kernel.org

Christoffer Dall (2):
KVM: arm64: nv: Implement nested Stage-2 page table walk logic
KVM: arm64: nv: Unmap/flush shadow stage 2 page tables

Marc Zyngier (14):
KVM: arm64: nv: Support multiple nested Stage-2 mmu structures
KVM: arm64: nv: Handle shadow stage 2 page faults
KVM: arm64: nv: Add Stage-1 EL2 invalidation primitives
KVM: arm64: nv: Handle EL2 Stage-1 TLB invalidation
KVM: arm64: nv: Handle TLB invalidation targeting L2 stage-1
KVM: arm64: nv: Handle TLBI VMALLS12E1{,IS} operations
KVM: arm64: nv: Handle TLBI ALLE1{,IS} operations
KVM: arm64: nv: Handle TLBI IPAS2E1{,IS} operations
KVM: arm64: nv: Handle FEAT_TTL hinted TLB operations
KVM: arm64: nv: Tag shadow S2 entries with guest's leaf S2 level
KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like
information
KVM: arm64: nv: Add handling of outer-shareable TLBI operations
KVM: arm64: nv: Add handling of range-based TLBI operations
KVM: arm64: nv: Add handling of NXS-flavoured TLBI operations

arch/arm64/include/asm/esr.h | 1 +
arch/arm64/include/asm/kvm_asm.h | 2 +
arch/arm64/include/asm/kvm_host.h | 36 ++
arch/arm64/include/asm/kvm_mmu.h | 26 +
arch/arm64/include/asm/kvm_nested.h | 127 +++++
arch/arm64/include/asm/sysreg.h | 17 +
arch/arm64/kvm/arm.c | 11 +
arch/arm64/kvm/hyp/vhe/switch.c | 51 +-
arch/arm64/kvm/hyp/vhe/tlb.c | 147 ++++++
arch/arm64/kvm/mmu.c | 213 ++++++--
arch/arm64/kvm/nested.c | 781 +++++++++++++++++++++++++++-
arch/arm64/kvm/reset.c | 6 +
arch/arm64/kvm/sys_regs.c | 398 ++++++++++++++
13 files changed, 1775 insertions(+), 41 deletions(-)

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2.39.2