[GIT PULL] KVM/riscv changes for 6.17

[Paolo Bonzini]

On Fri, Jul 25, 2025 at 2:06 PM Anup Patel <anup at brainfault.org> wrote:
>
> Hi Paolo,
>
> We have the following KVM RISC-V changes for 6.17:
> 1) Enabled ring-based dirty memory tracking
> 2) Improved "perf kvm stat" to report interrupt events
> 3) Delegate illegal instruction trap to VS-mode
> 4) Added SBI FWFT extension for Guest/VM with misaligned
>     delegation and pointer masking PMLEN features
> 5) MMU related improvements for KVM RISC-V for the
>     upcoming nested virtualization support
>
> Please pull.

Done, thanks.

Paolo

> Regards,
> Anup
>
> The following changes since commit 4cec89db80ba81fa4524c6449c0494b8ae08eeb0:
>
>   RISC-V: KVM: Move HGEI[E|P] CSR access to IMSIC virtualization
> (2025-07-11 18:33:27 +0530)
>
> are available in the Git repository at:
>
>   https://github.com/kvm-riscv/linux.git tags/kvm-riscv-6.17-1
>
> for you to fetch changes up to 583c7288feb43eb8cbb18d08376d328e9a48e72d:
>
>   RISC-V: KVM: Avoid re-acquiring memslot in kvm_riscv_gstage_map()
> (2025-07-23 17:20:41 +0530)
>
> ----------------------------------------------------------------
> KVM/riscv changes for 6.17
>
> - Enabled ring-based dirty memory tracking
> - Improved perf kvm stat to report interrupt events
> - Delegate illegal instruction trap to VS-mode
> - Added SBI FWFT extension for Guest/VM with misaligned
>   delegation and pointer masking PMLEN features
> - MMU related improvements for KVM RISC-V for upcoming
>   nested virtualization
>
> ----------------------------------------------------------------
> Anup Patel (12):
>       RISC-V: KVM: Check kvm_riscv_vcpu_alloc_vector_context() return value
>       RISC-V: KVM: Drop the return value of kvm_riscv_vcpu_aia_init()
>       RISC-V: KVM: Rename and move kvm_riscv_local_tlb_sanitize()
>       RISC-V: KVM: Replace KVM_REQ_HFENCE_GVMA_VMID_ALL with KVM_REQ_TLB_FLUSH
>       RISC-V: KVM: Don't flush TLB when PTE is unchanged
>       RISC-V: KVM: Implement kvm_arch_flush_remote_tlbs_range()
>       RISC-V: KVM: Use ncsr_xyz() in kvm_riscv_vcpu_trap_redirect()
>       RISC-V: KVM: Factor-out MMU related declarations into separate headers
>       RISC-V: KVM: Introduce struct kvm_gstage_mapping
>       RISC-V: KVM: Add vmid field to struct kvm_riscv_hfence
>       RISC-V: KVM: Factor-out g-stage page table management
>       RISC-V: KVM: Pass VMID as parameter to kvm_riscv_hfence_xyz() APIs
>
> Clément Léger (4):
>       RISC-V: KVM: add SBI extension init()/deinit() functions
>       RISC-V: KVM: add SBI extension reset callback
>       RISC-V: KVM: add support for FWFT SBI extension
>       RISC-V: KVM: add support for SBI_FWFT_MISALIGNED_DELEG
>
> Quan Zhou (4):
>       RISC-V: KVM: Enable ring-based dirty memory tracking
>       RISC-V: perf/kvm: Add reporting of interrupt events
>       RISC-V: KVM: Use find_vma_intersection() to search for intersecting VMAs
>       RISC-V: KVM: Avoid re-acquiring memslot in kvm_riscv_gstage_map()
>
> Samuel Holland (2):
>       RISC-V: KVM: Fix inclusion of Smnpm in the guest ISA bitmap
>       RISC-V: KVM: Add support for SBI_FWFT_POINTER_MASKING_PMLEN
>
> Xu Lu (1):
>       RISC-V: KVM: Delegate illegal instruction fault to VS mode
>
>  Documentation/virt/kvm/api.rst                     |   2 +-
>  arch/riscv/include/asm/kvm_aia.h                   |   2 +-
>  arch/riscv/include/asm/kvm_gstage.h                |  72 +++
>  arch/riscv/include/asm/kvm_host.h                  | 109 +----
>  arch/riscv/include/asm/kvm_mmu.h                   |  21 +
>  arch/riscv/include/asm/kvm_tlb.h                   |  84 ++++
>  arch/riscv/include/asm/kvm_vcpu_sbi.h              |  13 +
>  arch/riscv/include/asm/kvm_vcpu_sbi_fwft.h         |  33 ++
>  arch/riscv/include/asm/kvm_vmid.h                  |  27 ++
>  arch/riscv/include/uapi/asm/kvm.h                  |   2 +
>  arch/riscv/kvm/Kconfig                             |   1 +
>  arch/riscv/kvm/Makefile                            |   2 +
>  arch/riscv/kvm/aia_device.c                        |   6 +-
>  arch/riscv/kvm/aia_imsic.c                         |  12 +-
>  arch/riscv/kvm/gstage.c                            | 338 ++++++++++++++
>  arch/riscv/kvm/main.c                              |   3 +-
>  arch/riscv/kvm/mmu.c                               | 509 +++++----------------
>  arch/riscv/kvm/tlb.c                               | 110 ++---
>  arch/riscv/kvm/vcpu.c                              |  48 +-
>  arch/riscv/kvm/vcpu_exit.c                         |  20 +-
>  arch/riscv/kvm/vcpu_onereg.c                       |  84 ++--
>  arch/riscv/kvm/vcpu_sbi.c                          |  53 +++
>  arch/riscv/kvm/vcpu_sbi_fwft.c                     | 338 ++++++++++++++
>  arch/riscv/kvm/vcpu_sbi_replace.c                  |  17 +-
>  arch/riscv/kvm/vcpu_sbi_sta.c                      |   3 +-
>  arch/riscv/kvm/vcpu_sbi_v01.c                      |  25 +-
>  arch/riscv/kvm/vm.c                                |   7 +-
>  arch/riscv/kvm/vmid.c                              |  25 +
>  tools/perf/arch/riscv/util/kvm-stat.c              |   6 +-
>  tools/perf/arch/riscv/util/riscv_exception_types.h |  35 --
>  tools/perf/arch/riscv/util/riscv_trap_types.h      |  57 +++
>  31 files changed, 1382 insertions(+), 682 deletions(-)
>  create mode 100644 arch/riscv/include/asm/kvm_gstage.h
>  create mode 100644 arch/riscv/include/asm/kvm_mmu.h
>  create mode 100644 arch/riscv/include/asm/kvm_tlb.h
>  create mode 100644 arch/riscv/include/asm/kvm_vcpu_sbi_fwft.h
>  create mode 100644 arch/riscv/include/asm/kvm_vmid.h
>  create mode 100644 arch/riscv/kvm/gstage.c
>  create mode 100644 arch/riscv/kvm/vcpu_sbi_fwft.c
>  delete mode 100644 tools/perf/arch/riscv/util/riscv_exception_types.h
>  create mode 100644 tools/perf/arch/riscv/util/riscv_trap_types.h
>