From: Anup Patel Date: Sun, 2 Oct 2022 04:48:42 +0000 (+0530) Subject: RISC-V: KVM: Allow Guest use Svinval extension X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=bad6ea07c876a67c4d8f46b0c565ab500150720f;p=linux.git RISC-V: KVM: Allow Guest use Svinval extension We should advertise Svinval ISA extension to KVM user-space whenever host supports it. This will allow KVM user-space (i.e. QEMU or KVMTOOL) to pass on this information to Guest via ISA string. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones Signed-off-by: Anup Patel --- diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index 7351417afd62e..b6770ee088721 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -98,6 +98,7 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_M, KVM_RISCV_ISA_EXT_SVPBMT, KVM_RISCV_ISA_EXT_SSTC, + KVM_RISCV_ISA_EXT_SVINVAL, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c index d0f08d5b42829..901bb5c0cb503 100644 --- a/arch/riscv/kvm/vcpu.c +++ b/arch/riscv/kvm/vcpu.c @@ -53,6 +53,7 @@ static const unsigned long kvm_isa_ext_arr[] = { RISCV_ISA_EXT_m, RISCV_ISA_EXT_SVPBMT, RISCV_ISA_EXT_SSTC, + RISCV_ISA_EXT_SVINVAL, }; static unsigned long kvm_riscv_vcpu_base2isa_ext(unsigned long base_ext) @@ -87,6 +88,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_I: case KVM_RISCV_ISA_EXT_M: case KVM_RISCV_ISA_EXT_SSTC: + case KVM_RISCV_ISA_EXT_SVINVAL: return false; default: break;