[v3] ONE_REG interface for SBI FWFT extension

[PATCH v3 0/6] ONE_REG interface for SBI FWFT extension

Posted by Anup Patel 1 month, 1 week ago

This series adds ONE_REG interface for SBI FWFT extension implemented
by KVM RISC-V. This was missed out in accepted SBI FWFT patches for
KVM RISC-V.

These patches can also be found in the riscv_kvm_fwft_one_reg_v3 branch
at: https://github.com/avpatel/linux.git

Changes since v2:
 - Re-based on latest KVM RISC-V queue
 - Improved FWFT ONE_REG interface to allow enabling/disabling each
   FWFT feature from KVM userspace

Changes since v1:
 - Dropped have_state in PATCH4 as suggested by Drew
 - Added Drew's Reviewed-by in appropriate patches

Anup Patel (6):
  RISC-V: KVM: Set initial value of hedeleg in kvm_arch_vcpu_create()
  RISC-V: KVM: Introduce feature specific reset for SBI FWFT
  RISC-V: KVM: Introduce optional ONE_REG callbacks for SBI extensions
  RISC-V: KVM: Move copy_sbi_ext_reg_indices() to SBI implementation
  RISC-V: KVM: Implement ONE_REG interface for SBI FWFT state
  KVM: riscv: selftests: Add SBI FWFT to get-reg-list test

 arch/riscv/include/asm/kvm_vcpu_sbi.h         |  22 +-
 arch/riscv/include/asm/kvm_vcpu_sbi_fwft.h    |   1 +
 arch/riscv/include/uapi/asm/kvm.h             |  15 ++
 arch/riscv/kvm/vcpu.c                         |   3 +-
 arch/riscv/kvm/vcpu_onereg.c                  |  60 +----
 arch/riscv/kvm/vcpu_sbi.c                     | 172 +++++++++++--
 arch/riscv/kvm/vcpu_sbi_fwft.c                | 227 ++++++++++++++++--
 arch/riscv/kvm/vcpu_sbi_sta.c                 |  63 +++--
 .../selftests/kvm/riscv/get-reg-list.c        |  32 +++
 9 files changed, 467 insertions(+), 128 deletions(-)

-- 
2.43.0

Re: [PATCH v3 0/6] ONE_REG interface for SBI FWFT extension

Posted by Anup Patel 3 weeks, 4 days ago

On Sat, Aug 23, 2025 at 9:30 PM Anup Patel <apatel@ventanamicro.com> wrote:
>
> This series adds ONE_REG interface for SBI FWFT extension implemented
> by KVM RISC-V. This was missed out in accepted SBI FWFT patches for
> KVM RISC-V.
>
> These patches can also be found in the riscv_kvm_fwft_one_reg_v3 branch
> at: https://github.com/avpatel/linux.git
>
> Changes since v2:
>  - Re-based on latest KVM RISC-V queue
>  - Improved FWFT ONE_REG interface to allow enabling/disabling each
>    FWFT feature from KVM userspace
>
> Changes since v1:
>  - Dropped have_state in PATCH4 as suggested by Drew
>  - Added Drew's Reviewed-by in appropriate patches
>
> Anup Patel (6):
>   RISC-V: KVM: Set initial value of hedeleg in kvm_arch_vcpu_create()
>   RISC-V: KVM: Introduce feature specific reset for SBI FWFT
>   RISC-V: KVM: Introduce optional ONE_REG callbacks for SBI extensions
>   RISC-V: KVM: Move copy_sbi_ext_reg_indices() to SBI implementation
>   RISC-V: KVM: Implement ONE_REG interface for SBI FWFT state
>   KVM: riscv: selftests: Add SBI FWFT to get-reg-list test

Queued this series for Linux-6.18

Regards,
Anup

>
>  arch/riscv/include/asm/kvm_vcpu_sbi.h         |  22 +-
>  arch/riscv/include/asm/kvm_vcpu_sbi_fwft.h    |   1 +
>  arch/riscv/include/uapi/asm/kvm.h             |  15 ++
>  arch/riscv/kvm/vcpu.c                         |   3 +-
>  arch/riscv/kvm/vcpu_onereg.c                  |  60 +----
>  arch/riscv/kvm/vcpu_sbi.c                     | 172 +++++++++++--
>  arch/riscv/kvm/vcpu_sbi_fwft.c                | 227 ++++++++++++++++--
>  arch/riscv/kvm/vcpu_sbi_sta.c                 |  63 +++--
>  .../selftests/kvm/riscv/get-reg-list.c        |  32 +++
>  9 files changed, 467 insertions(+), 128 deletions(-)
>
> --
> 2.43.0
>