From d5900813807e237b9f4251290f46125a817da66d Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Fri, 14 May 2010 16:14:31 +0200 Subject: target-s390: enable SIGP Initial Reset 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 Signed-off-by: Aurelien Jarno --- target-s390x/kvm.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'target-s390x') diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index a2d77419bd..9bf6abb213 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -344,9 +344,20 @@ static int s390_store_status(CPUState *env, uint32_t parameter) static int s390_cpu_initial_reset(CPUState *env) { - /* XXX */ - fprintf(stderr, "XXX SIGP init\n"); - return -1; + int i; + + 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) -- cgit v1.2.3