| Message ID | 20240619153913.867263-5-cleger@rivosinc.com |
|---|---|
| State | New |
| Headers | show |
| Series | riscv: add support for Zaamo and Zalrsc extensions | expand |
On Wed, Jun 19, 2024 at 9:11 PM Clément Léger <cleger@rivosinc.com> wrote: > > Extend the KVM ISA extension ONE_REG interface to allow KVM user space > to detect and enable Zaamo/Zalrsc extensions for Guest/VM. > > Signed-off-by: Clément Léger <cleger@rivosinc.com> LGTM. Reviewed-by: Anup Patel <anup@brainfault.org> Regards, Anup > --- > arch/riscv/include/uapi/asm/kvm.h | 2 ++ > arch/riscv/kvm/vcpu_onereg.c | 4 ++++ > 2 files changed, 6 insertions(+) > > diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h > index a6215634df7c..f10c6e133d4d 100644 > --- a/arch/riscv/include/uapi/asm/kvm.h > +++ b/arch/riscv/include/uapi/asm/kvm.h > @@ -174,6 +174,8 @@ enum KVM_RISCV_ISA_EXT_ID { > KVM_RISCV_ISA_EXT_ZCD, > KVM_RISCV_ISA_EXT_ZCF, > KVM_RISCV_ISA_EXT_ZCMOP, > + KVM_RISCV_ISA_EXT_ZAAMO, > + KVM_RISCV_ISA_EXT_ZALRSC, > KVM_RISCV_ISA_EXT_MAX, > }; > > diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c > index fa5ee544bc69..0972a997beca 100644 > --- a/arch/riscv/kvm/vcpu_onereg.c > +++ b/arch/riscv/kvm/vcpu_onereg.c > @@ -41,7 +41,9 @@ 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(ZAAMO), > KVM_ISA_EXT_ARR(ZACAS), > + KVM_ISA_EXT_ARR(ZALRSC), > KVM_ISA_EXT_ARR(ZBA), > KVM_ISA_EXT_ARR(ZBB), > KVM_ISA_EXT_ARR(ZBC), > @@ -131,7 +133,9 @@ 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_ZAAMO: > case KVM_RISCV_ISA_EXT_ZACAS: > + case KVM_RISCV_ISA_EXT_ZALRSC: > case KVM_RISCV_ISA_EXT_ZBA: > case KVM_RISCV_ISA_EXT_ZBB: > case KVM_RISCV_ISA_EXT_ZBC: > -- > 2.45.2 >
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index a6215634df7c..f10c6e133d4d 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -174,6 +174,8 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZCD, KVM_RISCV_ISA_EXT_ZCF, KVM_RISCV_ISA_EXT_ZCMOP, + KVM_RISCV_ISA_EXT_ZAAMO, + KVM_RISCV_ISA_EXT_ZALRSC, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index fa5ee544bc69..0972a997beca 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -41,7 +41,9 @@ 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(ZAAMO), KVM_ISA_EXT_ARR(ZACAS), + KVM_ISA_EXT_ARR(ZALRSC), KVM_ISA_EXT_ARR(ZBA), KVM_ISA_EXT_ARR(ZBB), KVM_ISA_EXT_ARR(ZBC), @@ -131,7 +133,9 @@ 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_ZAAMO: case KVM_RISCV_ISA_EXT_ZACAS: + case KVM_RISCV_ISA_EXT_ZALRSC: case KVM_RISCV_ISA_EXT_ZBA: case KVM_RISCV_ISA_EXT_ZBB: case KVM_RISCV_ISA_EXT_ZBC:
Extend the KVM ISA extension ONE_REG interface to allow KVM user space to detect and enable Zaamo/Zalrsc extensions for Guest/VM. Signed-off-by: Clément Léger <cleger@rivosinc.com> --- arch/riscv/include/uapi/asm/kvm.h | 2 ++ arch/riscv/kvm/vcpu_onereg.c | 4 ++++ 2 files changed, 6 insertions(+)