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target-s390: enable SIGP Initial Reset

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For SMP to work with KVM, we need to properly emulate the SIGP Initial Reset
Command. Recent (2.6.32) kernels issue that before the SIGP Reset command that
actually wakes up the vcpu.

This patch makes -smp work on S390x.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Alexander Graf 2010-05-14 16:14:31 +02:00 committed by Aurelien Jarno
parent 3d78499a49
commit d590081380
1 changed files with 14 additions and 3 deletions
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17
target-s390x/kvm.c
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@ -344,9 +344,20 @@ static int s390_store_status(CPUState *env, uint32_t parameter)
static int s390_cpu_initial_reset(CPUState *env) static int s390_cpu_initial_reset(CPUState *env)
{ {
/* XXX */ int i;
fprintf(stderr, "XXX SIGP init\n");
return -1; if (kvm_vcpu_ioctl(env, KVM_S390_INITIAL_RESET, NULL) < 0) {
perror("cannot init reset vcpu");
}
/* Manually zero out all registers */
cpu_synchronize_state(env);
for (i = 0; i < 16; i++) {
env->regs[i] = 0;
}
dprintf("DONE: SIGP initial reset: %p\n", env);
return 0;
} }
static int handle_sigp(CPUState *env, struct kvm_run *run, uint8_t ipa1) static int handle_sigp(CPUState *env, struct kvm_run *run, uint8_t ipa1)