Unverified Commit fb2a3d63 authored by Clément Léger's avatar Clément Léger Committed by Palmer Dabbelt
Browse files

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



Extend the KVM ISA extension ONE_REG interface to allow KVM user space
to detect and enable Zimop extension for Guest/VM.

Signed-off-by: default avatarClément Léger <cleger@rivosinc.com>
Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
Acked-by: default avatarAnup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20240619113529.676940-5-cleger@rivosinc.com


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent 36f8960d

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

+1 −0
Original line number Diff line number Diff line
@@ -168,6 +168,7 @@ enum KVM_RISCV_ISA_EXT_ID { 
	KVM_RISCV_ISA_EXT_ZTSO,

	KVM_RISCV_ISA_EXT_ZACAS,

	KVM_RISCV_ISA_EXT_SSCOFPMF,

	KVM_RISCV_ISA_EXT_ZIMOP,

	KVM_RISCV_ISA_EXT_MAX,

};

arch/riscv/kvm/vcpu_onereg.c

+2 −0
Original line number Diff line number Diff line
@@ -61,6 +61,7 @@ static const unsigned long kvm_isa_ext_arr[] = { 
	KVM_ISA_EXT_ARR(ZIHINTNTL),

	KVM_ISA_EXT_ARR(ZIHINTPAUSE),

	KVM_ISA_EXT_ARR(ZIHPM),

	KVM_ISA_EXT_ARR(ZIMOP),

	KVM_ISA_EXT_ARR(ZKND),

	KVM_ISA_EXT_ARR(ZKNE),

	KVM_ISA_EXT_ARR(ZKNH),
@@ -143,6 +144,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) 
	case KVM_RISCV_ISA_EXT_ZIHINTNTL:

	case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:

	case KVM_RISCV_ISA_EXT_ZIHPM:

	case KVM_RISCV_ISA_EXT_ZIMOP:

	case KVM_RISCV_ISA_EXT_ZKND:

	case KVM_RISCV_ISA_EXT_ZKNE:

	case KVM_RISCV_ISA_EXT_ZKNH: