Commit f3901ece authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
Browse files

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



We extend the KVM ISA extension ONE_REG interface to allow KVM
user space to detect and enable Zfh[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 2ddf7907

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

+2 −0
Original line number Diff line number Diff line
@@ -160,6 +160,8 @@ enum KVM_RISCV_ISA_EXT_ID { 
	KVM_RISCV_ISA_EXT_ZVKSED,

	KVM_RISCV_ISA_EXT_ZVKSH,

	KVM_RISCV_ISA_EXT_ZVKT,

	KVM_RISCV_ISA_EXT_ZFH,

	KVM_RISCV_ISA_EXT_ZFHMIN,

	KVM_RISCV_ISA_EXT_MAX,

};

arch/riscv/kvm/vcpu_onereg.c

+4 −0
Original line number Diff line number Diff line
@@ -47,6 +47,8 @@ static const unsigned long kvm_isa_ext_arr[] = { 
	KVM_ISA_EXT_ARR(ZBKC),

	KVM_ISA_EXT_ARR(ZBKX),

	KVM_ISA_EXT_ARR(ZBS),

	KVM_ISA_EXT_ARR(ZFH),

	KVM_ISA_EXT_ARR(ZFHMIN),

	KVM_ISA_EXT_ARR(ZICBOM),

	KVM_ISA_EXT_ARR(ZICBOZ),

	KVM_ISA_EXT_ARR(ZICNTR),
@@ -118,6 +120,8 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) 
	case KVM_RISCV_ISA_EXT_ZBKC:

	case KVM_RISCV_ISA_EXT_ZBKX:

	case KVM_RISCV_ISA_EXT_ZBS:

	case KVM_RISCV_ISA_EXT_ZFH:

	case KVM_RISCV_ISA_EXT_ZFHMIN:

	case KVM_RISCV_ISA_EXT_ZICNTR:

	case KVM_RISCV_ISA_EXT_ZICOND:

	case KVM_RISCV_ISA_EXT_ZICSR: