[PATCH v3 0/4] RISC-V: KVM: Cleanup SBI extension status when disable

[Inochi Amaoto <inochiama@gmail.com>]

KVM SBI FWFT extension has multiple internal state can be programmed
by the userspace. However, when the FWFT feature or the FWFT extension
is disabled, the internal state will be kept as it is, which may cause
some side effect for the vCPU, cleanup these state when a SBI extension
or FWFT feature is disabled.

Change from v2:
- https://lore.kernel.org/kvm/20260706021154.210289-1-inochiama@gmail.com
patch 1, 2:
1. Apply Anup's tag.
patch 3:
1. Remove the csr_dirty set.
patch 4:
1. Add a new patch that sets the csr_dirty for FWFT extension.

Change from v1:
- https://lore.kernel.org/kvm/20260701094731.1022163-1-inochiama@gmail.com
patch 2:
1. Check support callback existed before using it.

Inochi Amaoto (4):
  RISC-V: KVM: Add SBI extension validate callback
  RISC-V: KVM: Add SBI FWFT validation support
  RISC-V: KVM: Reset the SBI extension when disable it
  RISC-V: KVM: Mark the reset callback of FWFT extension always dirties
    CSR

 arch/riscv/include/asm/kvm_vcpu_sbi.h |  4 ++++
 arch/riscv/kvm/vcpu_config.c          |  2 ++
 arch/riscv/kvm/vcpu_sbi.c             | 30 +++++++++++++++++++++++++++
 arch/riscv/kvm/vcpu_sbi_fwft.c        | 27 ++++++++++++++++++++++++
 4 files changed, 63 insertions(+)

--
2.55.0


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