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authorCornelia Huck <cornelia.huck@de.ibm.com>2012-12-20 18:32:12 +0400
committerMarcelo Tosatti <mtosatti@redhat.com>2013-01-08 01:53:43 +0400
commitfa6b7fe9928d50444c29b29c8563746c6b0c6299 (patch)
tree0be284cf322eb82eefdb3df2743740e5578ba5c4 /include/trace/events/kvm.h
parentd6712df95bcfea597fc3ea2405ec13e8b69a7b8c (diff)
downloadlinux-fa6b7fe9928d50444c29b29c8563746c6b0c6299.tar.xz
KVM: s390: Add support for channel I/O instructions.
Add a new capability, KVM_CAP_S390_CSS_SUPPORT, which will pass intercepts for channel I/O instructions to userspace. Only I/O instructions interacting with I/O interrupts need to be handled in-kernel: - TEST PENDING INTERRUPTION (tpi) dequeues and stores pending interrupts entirely in-kernel. - TEST SUBCHANNEL (tsch) dequeues pending interrupts in-kernel and exits via KVM_EXIT_S390_TSCH to userspace for subchannel- related processing. Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'include/trace/events/kvm.h')
-rw-r--r--include/trace/events/kvm.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index 7ef9e759f499..a23f47c884cf 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h
@@ -14,7 +14,7 @@
ERSN(SHUTDOWN), ERSN(FAIL_ENTRY), ERSN(INTR), ERSN(SET_TPR), \
ERSN(TPR_ACCESS), ERSN(S390_SIEIC), ERSN(S390_RESET), ERSN(DCR),\
ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI), ERSN(PAPR_HCALL), \
- ERSN(S390_UCONTROL)
+ ERSN(S390_UCONTROL), ERSN(S390_TSCH)
TRACE_EVENT(kvm_userspace_exit,
TP_PROTO(__u32 reason, int errno),