[PATCH] KVM: riscv: selftests: add check_supported_reg() into get-reg-list test

[Yong-Xuan Wang]

Not all the registers in a sublist are supported on a platform, e.g. the
SUBLIST_SBI_FWFT list. Add the check_supported_reg() to remove the false
alarm of missing registers.

Signed-off-by: Yong-Xuan Wang <yongxuan.wang at sifive.com>
---
 tools/testing/selftests/kvm/riscv/get-reg-list.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c
index 8d6b951434eb..d7cb9b5d37df 100644
--- a/tools/testing/selftests/kvm/riscv/get-reg-list.c
+++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c
@@ -28,6 +28,18 @@ enum {
 
 static bool isa_ext_cant_disable[KVM_RISCV_ISA_EXT_MAX];
 
+bool check_supported_reg(struct kvm_vcpu *vcpu, __u64 reg)
+{
+	int ret;
+	u64 data;
+
+	ret = __vcpu_get_reg(vcpu, reg, &data);
+	if (ret < 0)
+		return false;
+
+	return true;
+}
+
 bool filter_reg(__u64 reg)
 {
 	switch (reg & ~REG_MASK) {

---
base-commit: ddbf9c76c4020bf63a0799b00faad40caa3de6c2
change-id: 20260503-kvm-get_reg_list-0b041a27fb23