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authorCornelia Huck <cornelia.huck@de.ibm.com>2012-12-20 15:32:10 +0100
committerMarcelo Tosatti <mtosatti@redhat.com>2013-01-07 19:53:41 -0200
commitf379aae558b8daff0f7a1c5fc225af5d35c741f7 (patch)
tree26f66b7da5a2883cc4049e838f4a1fb75ef604aa /Documentation/virtual
parent48a3e950f4cee6a345ffbe9baf599f1e9a54c479 (diff)
KVM: s390: In-kernel handling of I/O instructions.
Explicitely catch all channel I/O related instructions intercepts in the kernel and set condition code 3 for them. This paves the way for properly handling these instructions later on. Note: This is not architecture compliant (the previous code wasn't either) since setting cc 3 is not the correct thing to do for some of these instructions. For Linux guests, however, it still has the intended effect of stopping css probing. 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>
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