+
+int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
+ target_ulong len, int type)
+{
+ struct kvm_sw_breakpoint *bp;
+ CPUState *env;
+ int err;
+
+ if (type == GDB_BREAKPOINT_SW) {
+ bp = kvm_find_sw_breakpoint(current_env, addr);
+ if (!bp)
+ return -ENOENT;
+
+ if (bp->use_count > 1) {
+ bp->use_count--;
+ return 0;
+ }
+
+ err = kvm_arch_remove_sw_breakpoint(current_env, bp);
+ if (err)
+ return err;
+
+ TAILQ_REMOVE(¤t_env->kvm_state->kvm_sw_breakpoints, bp, entry);
+ qemu_free(bp);
+ } else {
+ err = kvm_arch_remove_hw_breakpoint(addr, len, type);
+ if (err)
+ return err;
+ }
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ err = kvm_update_guest_debug(env, 0);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+void kvm_remove_all_breakpoints(CPUState *current_env)
+{
+ struct kvm_sw_breakpoint *bp, *next;
+ KVMState *s = current_env->kvm_state;
+ CPUState *env;
+
+ TAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) {
+ if (kvm_arch_remove_sw_breakpoint(current_env, bp) != 0) {
+ /* Try harder to find a CPU that currently sees the breakpoint. */
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ if (kvm_arch_remove_sw_breakpoint(env, bp) == 0)
+ break;
+ }
+ }
+ }
+ kvm_arch_remove_all_hw_breakpoints();
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu)
+ kvm_update_guest_debug(env, 0);
+}
+
+#else /* !KVM_CAP_SET_GUEST_DEBUG */
+
+int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap)
+{
+ return -EINVAL;
+}
+
+int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
+ target_ulong len, int type)
+{
+ return -EINVAL;
+}
+
+int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
+ target_ulong len, int type)
+{
+ return -EINVAL;
+}
+
+void kvm_remove_all_breakpoints(CPUState *current_env)
+{
+}
+#endif /* !KVM_CAP_SET_GUEST_DEBUG */