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authorCornelia Huck <cornelia.huck@de.ibm.com>2012-12-20 18:32:09 +0400
committerMarcelo Tosatti <mtosatti@redhat.com>2013-01-08 01:53:41 +0400
commit48a3e950f4cee6a345ffbe9baf599f1e9a54c479 (patch)
tree3e60015a025df89b28df12c6470babbfb566e766 /Documentation/virtual
parentd8346b7d9bab37e6cc712ff1622c65ff98bdfef8 (diff)
downloadlinux-48a3e950f4cee6a345ffbe9baf599f1e9a54c479.tar.xz
KVM: s390: Add support for machine checks.
Add support for injecting machine checks (only repressible conditions for now). This is a bit more involved than I/O interrupts, for these reasons: - Machine checks come in both floating and cpu varieties. - We don't have a bit for machine checks enabling, but have to use a roundabout approach with trapping PSW changing instructions and watching for opened machine checks. Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'Documentation/virtual')
-rw-r--r--Documentation/virtual/kvm/api.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index 83bd92b52936..8a0de309932f 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2073,6 +2073,10 @@ KVM_S390_INT_IO(ai,cssid,ssid,schid) (vm) - compound value to indicate an
I/O interrupt (ai - adapter interrupt; cssid,ssid,schid - subchannel);
I/O interruption parameters in parm (subchannel) and parm64 (intparm,
interruption subclass)
+KVM_S390_MCHK (vm, vcpu) - machine check interrupt; cr 14 bits in parm,
+ machine check interrupt code in parm64 (note that
+ machine checks needing further payload are not
+ supported by this ioctl)
Note that the vcpu ioctl is asynchronous to vcpu execution.