Commit 070aa1a4 authored by David Hildenbrand's avatar David Hildenbrand Committed by Cornelia Huck
Browse files

s390x/tcg: implement SIGP EXTERNAL CALL 



As preparation for TCG.

Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
Message-Id: <20170928203708.9376-22-david@redhat.com>
Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarCornelia Huck <cohuck@redhat.com>
parent 302230fc

target/s390x/sigp.c

+23 −2
Original line number Diff line number Diff line
@@ -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);