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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2011-10-04 05:20:59 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2011-11-14 17:47:26 +0100 |
| commit | 854e42f3e8d3dcaf35b018cf56618fbcd15082d9 (patch) | |
| tree | 1ee5914028ec3423eaf28a73291ae07d581c5d02 /target-s390x | |
| parent | 13449a6e0ecf6c73e34657100566a471f0c26bbb (diff) | |
| download | qemu-854e42f3e8d3dcaf35b018cf56618fbcd15082d9.zip qemu-854e42f3e8d3dcaf35b018cf56618fbcd15082d9.tar.gz qemu-854e42f3e8d3dcaf35b018cf56618fbcd15082d9.tar.bz2 | |
s390: Fix cpu shutdown for KVM
On s390 a shutdown is the state of all CPUs being either stopped
or disabled (for interrupts) waiting. We have to track the overall
number of running CPUs to call the shutdown sequence accordingly.
This patch implements the counting and shutdown handling for the
kvm path in qemu.
Lets also wrap changes to env->halted and env->exception_index.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-s390x')
| -rw-r--r-- | target-s390x/cpu.h | 2 | ||||
| -rw-r--r-- | target-s390x/kvm.c | 19 |
2 files changed, 9 insertions, 12 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 95abe59..a66aa01 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -309,6 +309,8 @@ static inline void kvm_s390_interrupt_internal(CPUState *env, int type, } #endif CPUState *s390_cpu_addr2state(uint16_t cpu_addr); +void s390_add_running_cpu(CPUState *env); +unsigned s390_del_running_cpu(CPUState *env); /* from s390-virtio-bus */ extern const target_phys_addr_t virtio_size; diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index 4beb794..40b0ab1 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -185,8 +185,7 @@ void kvm_s390_interrupt_internal(CPUState *env, int type, uint32_t parm, return; } - env->halted = 0; - env->exception_index = -1; + s390_add_running_cpu(env); qemu_cpu_kick(env); kvmint.type = type; @@ -299,8 +298,7 @@ static int handle_diag(CPUState *env, struct kvm_run *run, int ipb_code) static int s390_cpu_restart(CPUState *env) { kvm_s390_interrupt(env, KVM_S390_RESTART, 0); - env->halted = 0; - env->exception_index = -1; + s390_add_running_cpu(env); qemu_cpu_kick(env); dprintf("DONE: SIGP cpu restart: %p\n", env); return 0; @@ -425,17 +423,16 @@ static int handle_intercept(CPUState *env) r = handle_instruction(env, run); break; case ICPT_WAITPSW: - /* XXX What to do on system shutdown? */ - env->halted = 1; - env->exception_index = EXCP_HLT; + case ICPT_CPU_STOP: + if (s390_del_running_cpu(env) == 0) { + qemu_system_shutdown_request(); + } + r = EXCP_HALTED; break; case ICPT_SOFT_INTERCEPT: fprintf(stderr, "KVM unimplemented icpt SOFT\n"); exit(1); break; - case ICPT_CPU_STOP: - qemu_system_shutdown_request(); - break; case ICPT_IO: fprintf(stderr, "KVM unimplemented icpt IO\n"); exit(1); @@ -468,8 +465,6 @@ int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run) if (ret == 0) { ret = EXCP_INTERRUPT; - } else if (ret > 0) { - ret = 0; } return ret; } |