On Wed, Feb 14, 2024 at 06:07:56PM +0530, Anup Patel wrote: > We extend the KVM ISA extension ONE_REG interface to allow KVM > user space to detect and enable Zacas extension for Guest/VM. > > Signed-off-by: Anup Patel <[email protected]> > --- > arch/riscv/include/uapi/asm/kvm.h | 1 + > arch/riscv/kvm/vcpu_onereg.c | 2 ++ > 2 files changed, 3 insertions(+) > > diff --git a/arch/riscv/include/uapi/asm/kvm.h > b/arch/riscv/include/uapi/asm/kvm.h > index f8aa9f2ace95..37fb0f70b3e5 100644 > --- a/arch/riscv/include/uapi/asm/kvm.h > +++ b/arch/riscv/include/uapi/asm/kvm.h > @@ -167,6 +167,7 @@ enum KVM_RISCV_ISA_EXT_ID { > KVM_RISCV_ISA_EXT_ZVFHMIN, > KVM_RISCV_ISA_EXT_ZFA, > KVM_RISCV_ISA_EXT_ZTSO, > + KVM_RISCV_ISA_EXT_ZACAS, > KVM_RISCV_ISA_EXT_MAX, > }; > > diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c > index 38f5cf286087..f4a6124d25c9 100644 > --- a/arch/riscv/kvm/vcpu_onereg.c > +++ b/arch/riscv/kvm/vcpu_onereg.c > @@ -40,6 +40,7 @@ static const unsigned long kvm_isa_ext_arr[] = { > KVM_ISA_EXT_ARR(SVINVAL), > KVM_ISA_EXT_ARR(SVNAPOT), > KVM_ISA_EXT_ARR(SVPBMT), > + KVM_ISA_EXT_ARR(ZACAS), > KVM_ISA_EXT_ARR(ZBA), > KVM_ISA_EXT_ARR(ZBB), > KVM_ISA_EXT_ARR(ZBC), > @@ -118,6 +119,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned > long ext) > case KVM_RISCV_ISA_EXT_SSTC: > case KVM_RISCV_ISA_EXT_SVINVAL: > case KVM_RISCV_ISA_EXT_SVNAPOT: > + case KVM_RISCV_ISA_EXT_ZACAS: > case KVM_RISCV_ISA_EXT_ZBA: > case KVM_RISCV_ISA_EXT_ZBB: > case KVM_RISCV_ISA_EXT_ZBC: > -- > 2.34.1 >
Reviewed-by: Andrew Jones <[email protected]>
