diff options
| author | Xu Lu <luxu.kernel@bytedance.com> | 2025-10-20 12:24:56 +0800 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2026-02-06 19:05:26 +0530 |
| commit | 655d330c058f4e16de46d5c9b203008c630b59c8 (patch) | |
| tree | 731cea836f5d2a8993f42b6cb19e12cabc2cacfd /arch | |
| parent | 39ad809dd2579d9b7400bbc50a5b95d84527b75e (diff) | |
RISC-V: KVM: Allow Zalasr extensions for Guest/VM
Extend the KVM ISA extension ONE_REG interface to allow KVM user space
to detect and enable Zalasr extensions for Guest/VM.
Signed-off-by: Xu Lu <luxu.kernel@bytedance.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20251020042457.30915-5-luxu.kernel@bytedance.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/include/uapi/asm/kvm.h | 1 | ||||
| -rw-r--r-- | arch/riscv/kvm/vcpu_onereg.c | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index 6c536b2823c3..6a89c1d00a72 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -194,6 +194,7 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZVFBFWMA, KVM_RISCV_ISA_EXT_ZCLSD, KVM_RISCV_ISA_EXT_ZILSD, + KVM_RISCV_ISA_EXT_ZALASR, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index 347c0a902d28..e7ab6cb00646 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -50,6 +50,7 @@ static const unsigned long kvm_isa_ext_arr[] = { KVM_ISA_EXT_ARR(ZAAMO), KVM_ISA_EXT_ARR(ZABHA), KVM_ISA_EXT_ARR(ZACAS), + KVM_ISA_EXT_ARR(ZALASR), KVM_ISA_EXT_ARR(ZALRSC), KVM_ISA_EXT_ARR(ZAWRS), KVM_ISA_EXT_ARR(ZBA), @@ -189,6 +190,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_ZAAMO: case KVM_RISCV_ISA_EXT_ZABHA: case KVM_RISCV_ISA_EXT_ZACAS: + case KVM_RISCV_ISA_EXT_ZALASR: case KVM_RISCV_ISA_EXT_ZALRSC: case KVM_RISCV_ISA_EXT_ZAWRS: case KVM_RISCV_ISA_EXT_ZBA: |