diff options
| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2014-10-15 18:48:53 +0400 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-01-23 15:25:33 +0300 |
| commit | 6cddd432e3da5e25eccbc13844d03c871674a62e (patch) | |
| tree | 67c0c9cc7d4c8687de88310f78222cec6673622f /arch/s390/kvm/trace-s390.h | |
| parent | 2822545f9fe264ec62d4abc69c17ae759eafe4ce (diff) | |
| download | linux-6cddd432e3da5e25eccbc13844d03c871674a62e.tar.xz | |
KVM: s390: handle stop irqs without action_bits
This patch removes the famous action_bits and moves the handling of
SIGP STOP AND STORE STATUS directly into the SIGP STOP interrupt.
The new local interrupt infrastructure is used to track pending stop
requests.
STOP irqs are the only irqs that don't get actively delivered. They
remain pending until the stop function is executed (=stop intercept).
If another STOP irq is already pending, -EBUSY will now be returned
(needed for the SIGP handling code).
Migration of pending SIGP STOP (AND STORE STATUS) orders should now
be supported out of the box.
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/trace-s390.h')
| -rw-r--r-- | arch/s390/kvm/trace-s390.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/s390/kvm/trace-s390.h b/arch/s390/kvm/trace-s390.h index 647e9d6a4818..653a7ec09ef5 100644 --- a/arch/s390/kvm/trace-s390.h +++ b/arch/s390/kvm/trace-s390.h @@ -209,19 +209,21 @@ TRACE_EVENT(kvm_s390_request_resets, * Trace point for a vcpu's stop requests. */ TRACE_EVENT(kvm_s390_stop_request, - TP_PROTO(unsigned int action_bits), - TP_ARGS(action_bits), + TP_PROTO(unsigned char stop_irq, unsigned char flags), + TP_ARGS(stop_irq, flags), TP_STRUCT__entry( - __field(unsigned int, action_bits) + __field(unsigned char, stop_irq) + __field(unsigned char, flags) ), TP_fast_assign( - __entry->action_bits = action_bits; + __entry->stop_irq = stop_irq; + __entry->flags = flags; ), - TP_printk("stop request, action_bits = %08x", - __entry->action_bits) + TP_printk("stop request, stop irq = %u, flags = %08x", + __entry->stop_irq, __entry->flags) ); |