diff options
| author | Anup Patel <apatel@ventanamicro.com> | 2023-07-12 10:08:11 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-08-08 14:55:33 +0300 |
| commit | 41716861e4251b202809fc57deaed3881934e062 (patch) | |
| tree | 3e24cccff68a61ca3a2fd5c864f5f3b17c6843e9 | |
| parent | 613029442a4b837d3f8ce8ab08064f095ecdbdb6 (diff) | |
| download | linux-41716861e4251b202809fc57deaed3881934e062.tar.xz | |
RISC-V: KVM: Allow Zba and Zbs extensions for Guest/VM
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>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
| -rw-r--r-- | arch/riscv/include/uapi/asm/kvm.h | 2 | ||||
| -rw-r--r-- | arch/riscv/kvm/vcpu_onereg.c | 4 |
2 files changed, 6 insertions, 0 deletions
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 c57c7fa260c2..4389ae050d33 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -38,7 +38,9 @@ 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), @@ -82,7 +84,9 @@ 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; |