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s390x/tcg: implement SIGP EXTERNAL CALL 

As preparation for TCG.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170928203708.9376-22-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2017-09-28 22:36:59 +02:00 committed by Cornelia Huck
parent 302230fc44
commit 070aa1a493
1 changed files with 23 additions and 2 deletions
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25
target/s390x/sigp.c
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@ -58,6 +58,24 @@ static void sigp_sense(S390CPU *dst_cpu, SigpInfo *si)
}
}
static void sigp_external_call(S390CPU *src_cpu, S390CPU *dst_cpu, SigpInfo *si)
{
int ret;
if (!tcg_enabled()) {
/* handled in KVM */
set_sigp_status(si, SIGP_STAT_INVALID_ORDER);
return;
}
ret = cpu_inject_external_call(dst_cpu, src_cpu->env.core_id);
if (!ret) {
si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
} else {
set_sigp_status(si, SIGP_STAT_EXT_CALL_PENDING);
}
}
static void sigp_start(CPUState *cs, run_on_cpu_data arg)
{
S390CPU *cpu = S390_CPU(cs);
@ -282,7 +300,7 @@ static void sigp_sense_running(S390CPU *dst_cpu, SigpInfo *si)
}
}
static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order,
static int handle_sigp_single_dst(S390CPU *cpu, S390CPU *dst_cpu, uint8_t order,
uint64_t param, uint64_t *status_reg)
{
SigpInfo si = {
@ -306,6 +324,9 @@ static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order,
case SIGP_SENSE:
sigp_sense(dst_cpu, &si);
break;
case SIGP_EXTERNAL_CALL:
sigp_external_call(cpu, dst_cpu, &si);
break;
case SIGP_START:
run_on_cpu(CPU(dst_cpu), sigp_start, RUN_ON_CPU_HOST_PTR(&si));
break;
@ -389,7 +410,7 @@ int handle_sigp(CPUS390XState *env, uint8_t order, uint64_t r1, uint64_t r3)
default:
/* all other sigp orders target a single vcpu */
dst_cpu = s390_cpu_addr2state(env->regs[r3]);
ret = handle_sigp_single_dst(dst_cpu, order, param, status_reg);
ret = handle_sigp_single_dst(cpu, dst_cpu, order, param, status_reg);
}
qemu_mutex_unlock(&qemu_sigp_mutex);