| Message ID | 20230712161047.1764756-4-apatel@ventanamicro.com |
|---|---|
| State | Accepted |
| Headers | show |
| Series | KVM RISC-V ONE_REG ISA extension improvements | expand |
On Wed, Jul 12, 2023 at 09:40:43PM +0530, Anup Patel wrote: > We extend the KVM ISA extension ONE_REG interface to allow KVM > user space to detect and enable Zba and Zbs extensions for Guest/VM. > > Signed-off-by: Anup Patel <apatel@ventanamicro.com> > --- > arch/riscv/include/uapi/asm/kvm.h | 2 ++ > arch/riscv/kvm/vcpu_onereg.c | 4 ++++ > 2 files changed, 6 insertions(+) > Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index 6c2285f86545..68f929d88f43 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -124,6 +124,8 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_SSAIA, KVM_RISCV_ISA_EXT_V, KVM_RISCV_ISA_EXT_SVNAPOT, + KVM_RISCV_ISA_EXT_ZBA, + KVM_RISCV_ISA_EXT_ZBS, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index 236359722364..555acebcbe02 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -37,7 +37,9 @@ 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(ZBA), KVM_ISA_EXT_ARR(ZBB), + KVM_ISA_EXT_ARR(ZBS), KVM_ISA_EXT_ARR(ZIHINTPAUSE), KVM_ISA_EXT_ARR(ZICBOM), KVM_ISA_EXT_ARR(ZICBOZ), @@ -81,7 +83,9 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_SVINVAL: case KVM_RISCV_ISA_EXT_SVNAPOT: case KVM_RISCV_ISA_EXT_ZIHINTPAUSE: + case KVM_RISCV_ISA_EXT_ZBA: case KVM_RISCV_ISA_EXT_ZBB: + case KVM_RISCV_ISA_EXT_ZBS: return false; default: break;
We extend the KVM ISA extension ONE_REG interface to allow KVM user space to detect and enable Zba and Zbs extensions for Guest/VM. Signed-off-by: Anup Patel <apatel@ventanamicro.com> --- arch/riscv/include/uapi/asm/kvm.h | 2 ++ arch/riscv/kvm/vcpu_onereg.c | 4 ++++ 2 files changed, 6 insertions(+)