Commit 77fc0bfa authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
Browse files

RISC-V: KVM: Allow Zacas extension for Guest/VM 



Extend the KVM ISA extension ONE_REG interface to allow KVM user space
to detect and enable Zacas extension 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 d9bb4eca

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

+1 −0
Original line number Diff line number Diff line
@@ -167,6 +167,7 @@ enum KVM_RISCV_ISA_EXT_ID { 
	KVM_RISCV_ISA_EXT_ZVFHMIN,

	KVM_RISCV_ISA_EXT_ZFA,

	KVM_RISCV_ISA_EXT_ZTSO,

	KVM_RISCV_ISA_EXT_ZACAS,

	KVM_RISCV_ISA_EXT_MAX,

};

arch/riscv/kvm/vcpu_onereg.c

+2 −0
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ static const unsigned long kvm_isa_ext_arr[] = { 
	KVM_ISA_EXT_ARR(SVINVAL),

	KVM_ISA_EXT_ARR(SVNAPOT),

	KVM_ISA_EXT_ARR(SVPBMT),

	KVM_ISA_EXT_ARR(ZACAS),

	KVM_ISA_EXT_ARR(ZBA),

	KVM_ISA_EXT_ARR(ZBB),

	KVM_ISA_EXT_ARR(ZBC),
@@ -118,6 +119,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) 
	case KVM_RISCV_ISA_EXT_SSTC:

	case KVM_RISCV_ISA_EXT_SVINVAL:

	case KVM_RISCV_ISA_EXT_SVNAPOT:

	case KVM_RISCV_ISA_EXT_ZACAS:

	case KVM_RISCV_ISA_EXT_ZBA:

	case KVM_RISCV_ISA_EXT_ZBB:

	case KVM_RISCV_ISA_EXT_ZBC: