[PATCH 2/6] RISC-V: KVM: use ENOENT in *_one_reg() when extension is unavailable

[Daniel Henrique Barboza <dbarboza@xxxxxxxxxxxxxxxx>]

Following a similar logic as the previous patch let's minimize the EINVAL
usage in *_one_reg() APIs by using ENOENT when an extension that
implements the reg is not available.

For consistency we're also replacing an EOPNOTSUPP instance that should
be an ENOENT since it's an "extension is not available" error.

Signed-off-by: Daniel Henrique Barboza <dbarboza@xxxxxxxxxxxxxxxx>
---
 arch/riscv/kvm/vcpu_onereg.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
index ba63522be060..e630a68e4f27 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -135,12 +135,12 @@ static int kvm_riscv_vcpu_get_reg_config(struct kvm_vcpu *vcpu,
 		break;
 	case KVM_REG_RISCV_CONFIG_REG(zicbom_block_size):
 		if (!riscv_isa_extension_available(vcpu->arch.isa, ZICBOM))
-			return -EINVAL;
+			return -ENOENT;
 		reg_val = riscv_cbom_block_size;
 		break;
 	case KVM_REG_RISCV_CONFIG_REG(zicboz_block_size):
 		if (!riscv_isa_extension_available(vcpu->arch.isa, ZICBOZ))
-			return -EINVAL;
+			return -ENOENT;
 		reg_val = riscv_cboz_block_size;
 		break;
 	case KVM_REG_RISCV_CONFIG_REG(mvendorid):
@@ -452,7 +452,7 @@ static int riscv_vcpu_set_isa_ext_single(struct kvm_vcpu *vcpu,
 
 	host_isa_ext = kvm_isa_ext_arr[reg_num];
 	if (!__riscv_isa_extension_available(NULL, host_isa_ext))
-		return	-EOPNOTSUPP;
+		return	-ENOENT;
 
 	if (!vcpu->arch.ran_atleast_once) {
 		/*
-- 
2.41.0