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-rw-r--r--target-s390x/kvm.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 4d12f70021..6d47637d78 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -583,6 +583,22 @@ static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
handle_diag_308(&cpu->env, r1, r3);
}
+static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
+{
+ CPUS390XState *env = &cpu->env;
+ unsigned long pc;
+
+ cpu_synchronize_state(CPU(cpu));
+
+ pc = env->psw.addr - 4;
+ if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
+ env->psw.addr = pc;
+ return EXCP_DEBUG;
+ }
+
+ return -ENOENT;
+}
+
#define DIAG_KVM_CODE_MASK 0x000000000000ffff
static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
@@ -603,7 +619,7 @@ static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
r = handle_hypercall(cpu, run);
break;
case DIAG_KVM_BREAKPOINT:
- sleep(10);
+ r = handle_sw_breakpoint(cpu, run);
break;
default:
DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
@@ -705,7 +721,7 @@ out:
return 0;
}
-static void handle_instruction(S390CPU *cpu, struct kvm_run *run)
+static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
{
unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
@@ -732,8 +748,11 @@ static void handle_instruction(S390CPU *cpu, struct kvm_run *run)
}
if (r < 0) {
+ r = 0;
enter_pgmcheck(cpu, 0x0001);
}
+
+ return r;
}
static bool is_special_wait_psw(CPUState *cs)
@@ -753,7 +772,7 @@ static int handle_intercept(S390CPU *cpu)
(long)cs->kvm_run->psw_addr);
switch (icpt_code) {
case ICPT_INSTRUCTION:
- handle_instruction(cpu, run);
+ r = handle_instruction(cpu, run);
break;
case ICPT_WAITPSW:
/* disabled wait, since enabled wait is handled in kernel */