Commit bad6ea07 authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
Browse files

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: default avatarAnup Patel <apatel@ventanamicro.com>
Reviewed-by: default avatarAndrew Jones <ajones@ventanamicro.com>
Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent 5ff11248

arch/riscv/include/uapi/asm/kvm.h

+1 −0
Original line number Diff line number Diff line
@@ -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,

};

arch/riscv/kvm/vcpu.c

+2 −0
Original line number Diff line number Diff line
@@ -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;