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s390x/kvm: propagate s390 cpu state to kvm

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Let QEMU propagate the cpu state to kvm. If kvm doesn't yet support it, it is
silently ignored as kvm will still handle the cpu state itself in that case.

The state is not synced back, thus kvm won't have a chance to actively modify
the cpu state. To do so, control has to be given back to QEMU (which is already
done so in all relevant cases).

Setting of the cpu state can fail either because kvm doesn't support the
interface yet, or because the state is invalid/not supported. Failed attempts
will be traced

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
CC: Andreas Faerber <afaerber@suse.de>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
David Hildenbrand 2014-09-30 10:57:30 +02:00 • committed by Cornelia Huck
parent eb24f7c689
commit c9e659c9ee
4 changed files with 50 additions and 2 deletions
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5
target-s390x/cpu.h
View file

@ -1072,6 +1072,7 @@ int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
int kvm_s390_cpu_restart(S390CPU *cpu);
int kvm_s390_get_memslot_count(KVMState *s);
void kvm_s390_clear_cmma_callback(void *opaque);
int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state);
#else
static inline void kvm_s390_io_interrupt(uint16_t subchannel_id,
uint16_t subchannel_nr,
@ -1102,6 +1103,10 @@ static inline int kvm_s390_get_memslot_count(KVMState *s)
{
return MAX_AVAIL_SLOTS;
}
static inline int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
{
return -ENOSYS;
}
#endif
static inline void cmma_reset(S390CPU *cpu)