Commit 17f71a2a authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
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RISC-V: KVM: Fix riscv_vcpu_get_isa_ext_single() for missing extensions 



The riscv_vcpu_get_isa_ext_single() should fail with -ENOENT error
when corresponding ISA extension is not available on the host.

Fixes: e98b1085 ("RISC-V: KVM: Factor-out ONE_REG related code to its own source file")
Signed-off-by: default avatarAnup Patel <apatel@ventanamicro.com>
Reviewed-by: default avatarAtish Patra <atishp@rivosinc.com>
Reviewed-by: default avatarAndrew Jones <ajones@ventanamicro.com>
Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent ef4d4836

arch/riscv/kvm/vcpu_onereg.c

+4 −1
Original line number Diff line number Diff line
@@ -460,8 +460,11 @@ static int riscv_vcpu_get_isa_ext_single(struct kvm_vcpu *vcpu, 
	    reg_num >= ARRAY_SIZE(kvm_isa_ext_arr))

		return -ENOENT;



	*reg_val = 0;

	host_isa_ext = kvm_isa_ext_arr[reg_num];

	if (!__riscv_isa_extension_available(NULL, host_isa_ext))

		return -ENOENT;



	*reg_val = 0;

	if (__riscv_isa_extension_available(vcpu->arch.isa, host_isa_ext))

		*reg_val = 1; /* Mark the given extension as available */