Initial support for RISC-V KVM breakpoint test. Check the exit reason
and the PC when guest debug is enabled.
Signed-off-by: Chao Du <duchao@xxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/kvm/Makefile | 1 +
.../testing/selftests/kvm/riscv/breakpoints.c | 49 +++++++++++++++++++
2 files changed, 50 insertions(+)
create mode 100644 tools/testing/selftests/kvm/riscv/breakpoints.c
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index 492e937fab00..5f9048a740b0 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -184,6 +184,7 @@ TEST_GEN_PROGS_s390x += rseq_test
TEST_GEN_PROGS_s390x += set_memory_region_test
TEST_GEN_PROGS_s390x += kvm_binary_stats_test
+TEST_GEN_PROGS_riscv += riscv/breakpoints
TEST_GEN_PROGS_riscv += demand_paging_test
TEST_GEN_PROGS_riscv += dirty_log_test
TEST_GEN_PROGS_riscv += get-reg-list
diff --git a/tools/testing/selftests/kvm/riscv/breakpoints.c b/tools/testing/selftests/kvm/riscv/breakpoints.c
new file mode 100644
index 000000000000..8ca09a493460
--- /dev/null
+++ b/tools/testing/selftests/kvm/riscv/breakpoints.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RISC-V KVM breakpoint tests.
+ *
+ * Copyright 2024 Beijing ESWIN Computing Technology Co., Ltd.
+ *
+ */
+#include "kvm_util.h"
+
+#define PC(v) ((uint64_t)&(v))
+
+extern unsigned char sw_bp;
+
+static void guest_code(void)
+{
+ asm volatile("sw_bp: ebreak");
+ asm volatile("nop");
+ asm volatile("nop");
+ asm volatile("nop");
+
+ GUEST_DONE();
+}
+
+int main(void)
+{
+ struct kvm_vm *vm;
+ struct kvm_vcpu *vcpu;
+ struct kvm_guest_debug debug;
+ uint64_t pc;
+
+ TEST_REQUIRE(kvm_has_cap(KVM_CAP_SET_GUEST_DEBUG));
+
+ vm = vm_create_with_one_vcpu(&vcpu, guest_code);
+
+ memset(&debug, 0, sizeof(debug));
+ debug.control = KVM_GUESTDBG_ENABLE;
+ vcpu_guest_debug_set(vcpu, &debug);
+ vcpu_run(vcpu);
+
+ TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_DEBUG);
+
+ vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc), &pc);
+
+ TEST_ASSERT_EQ(pc, PC(sw_bp));
+
+ kvm_vm_free(vm);
+
+ return 0;
+}
--
2.17.1
