Commit f4630028 authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
Browse files

RISC-V: KVM: Allow Zvfh[min] extensions for Guest/VM 



We extend the KVM ISA extension ONE_REG interface to allow KVM
user space to detect and enable Zvfh[min] extensions for Guest/VM.

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 1a3bc507

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

+2 −0
Original line number Diff line number Diff line
@@ -163,6 +163,8 @@ enum KVM_RISCV_ISA_EXT_ID { 
	KVM_RISCV_ISA_EXT_ZFH,

	KVM_RISCV_ISA_EXT_ZFHMIN,

	KVM_RISCV_ISA_EXT_ZIHINTNTL,

	KVM_RISCV_ISA_EXT_ZVFH,

	KVM_RISCV_ISA_EXT_ZVFHMIN,

	KVM_RISCV_ISA_EXT_MAX,

};

arch/riscv/kvm/vcpu_onereg.c

+4 −0
Original line number Diff line number Diff line
@@ -67,6 +67,8 @@ static const unsigned long kvm_isa_ext_arr[] = { 
	KVM_ISA_EXT_ARR(ZKT),

	KVM_ISA_EXT_ARR(ZVBB),

	KVM_ISA_EXT_ARR(ZVBC),

	KVM_ISA_EXT_ARR(ZVFH),

	KVM_ISA_EXT_ARR(ZVFHMIN),

	KVM_ISA_EXT_ARR(ZVKB),

	KVM_ISA_EXT_ARR(ZVKG),

	KVM_ISA_EXT_ARR(ZVKNED),
@@ -139,6 +141,8 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) 
	case KVM_RISCV_ISA_EXT_ZKT:

	case KVM_RISCV_ISA_EXT_ZVBB:

	case KVM_RISCV_ISA_EXT_ZVBC:

	case KVM_RISCV_ISA_EXT_ZVFH:

	case KVM_RISCV_ISA_EXT_ZVFHMIN:

	case KVM_RISCV_ISA_EXT_ZVKB:

	case KVM_RISCV_ISA_EXT_ZVKG:

	case KVM_RISCV_ISA_EXT_ZVKNED: