@@ -594,6 +594,7 @@ struct sysib_322 {
#define SIGP_SET_PREFIX 0x0d
#define SIGP_STORE_STATUS_ADDR 0x0e
#define SIGP_SET_ARCH 0x12
+#define SIGP_COND_EMERGENCY 0x13
#define SIGP_SENSE_RUNNING 0x15
#define SIGP_STORE_ADTL_STATUS 0x17
@@ -290,6 +290,40 @@ static void sigp_set_prefix(CPUState *cs, run_on_cpu_data arg)
si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
}
+static void sigp_cond_emergency(S390CPU *src_cpu, S390CPU *dst_cpu,
+ SigpInfo *si)
+{
+ const uint64_t psw_int_mask = PSW_MASK_IO | PSW_MASK_EXT;
+ uint16_t p_asn, s_asn, asn;
+ uint64_t psw_addr, psw_mask;
+ bool idle;
+
+ if (!tcg_enabled()) {
+ /* handled in KVM */
+ set_sigp_status(si, SIGP_STAT_INVALID_ORDER);
+ return;
+ }
+
+ /* this looks racy, but these values are only used when STOPPED */
+ idle = CPU(dst_cpu)->halted;
+ psw_addr = dst_cpu->env.psw.addr;
+ psw_mask = dst_cpu->env.psw.mask;
+ asn = si->param;
+ p_asn = dst_cpu->env.cregs[4] & 0xffff; /* Primary ASN */
+ s_asn = dst_cpu->env.cregs[3] & 0xffff; /* Secondary ASN */
+
+ if (s390_cpu_get_state(dst_cpu) != CPU_STATE_STOPPED ||
+ (psw_mask & psw_int_mask) != psw_int_mask ||
+ (idle && psw_addr != 0) ||
+ (!idle && (asn == p_asn || asn == s_asn))) {
+ cpu_inject_emergency_signal(dst_cpu, src_cpu->env.core_id);
+ } else {
+ set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
+ }
+
+ si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+}
+
static void sigp_sense_running(S390CPU *dst_cpu, SigpInfo *si)
{
if (!tcg_enabled()) {
@@ -369,6 +403,9 @@ static int handle_sigp_single_dst(S390CPU *cpu, S390CPU *dst_cpu, uint8_t order,
case SIGP_CPU_RESET:
run_on_cpu(CPU(dst_cpu), sigp_cpu_reset, RUN_ON_CPU_HOST_PTR(&si));
break;
+ case SIGP_COND_EMERGENCY:
+ sigp_cond_emergency(cpu, dst_cpu, &si);
+ break;
case SIGP_SENSE_RUNNING:
sigp_sense_running(dst_cpu, &si);
break;
Mostly analogous to the kernel/KVM version (so I assume the checks are correct :) ). As a preparation for TCG. Signed-off-by: David Hildenbrand <david@redhat.com> --- target/s390x/cpu.h | 1 + target/s390x/sigp.c | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+)