The riscv_vcpu_get_isa_ext_single() should fail with -ENOENT error
when corresponding ISA extension is not available on the host.
Fixes: e98b1085be79 ("RISC-V: KVM: Factor-out ONE_REG related code to its own source file")
Signed-off-by: Anup Patel <apatel@xxxxxxxxxxxxxxxx>
Reviewed-by: Atish Patra <atishp@xxxxxxxxxxxx>
Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
---
arch/riscv/kvm/vcpu_onereg.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
index e7e833ced91b..b7e0e03c69b1 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -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 */
--
2.34.1
