ONE_REG interface for SBI FWFT extension [LWN.net]

From:		Anup Patel
To:		Atish Patra
Subject:		[PATCH 0/6] ONE_REG interface for SBI FWFT extension
Date:		Thu, 14 Aug 2025 21:25:42 +0530
Message-ID:		<[email protected]>
Cc:		Palmer Dabbelt , Paul Walmsley , Alexandre Ghiti , Andrew Jones , Anup Patel , Paolo Bonzini , Shuah Khan , kvm-AT-vger.kernel.org, kvm-riscv-AT-lists.infradead.org, linux-riscv-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, linux-kselftest-AT-vger.kernel.org, Anup Patel
Archive-link:		Article

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_v1 branch
at: https://github.com/avpatel/linux.git

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         |  23 +-
 arch/riscv/include/uapi/asm/kvm.h             |  14 ++
 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                | 199 ++++++++++++++++--
 arch/riscv/kvm/vcpu_sbi_sta.c                 |  64 ++++--
 .../selftests/kvm/riscv/get-reg-list.c        |  28 +++
 8 files changed, 436 insertions(+), 127 deletions(-)

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2.43.0