From ea5f496925755bc5e13adbdcfcb841bc2848913b Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Tue, 14 Oct 2014 15:29:30 +0200 Subject: [PATCH] KVM: s390: only one external call may be pending at a time Only one external call may be pending at a vcpu at a time. For this reason, we have to detect whether the SIGP externcal call interpretation facility is available. If so, all external calls have to be injected using this mechanism. SIGP EXTERNAL CALL orders have to return whether another external call is already pending. This check was missing until now. SIGP SENSE hasn't returned yet in all conditions whether an external call was pending. If a SIGP EXTERNAL CALL irq is to be injected and one is already pending, -EBUSY is returned. Reviewed-by: Cornelia Huck Signed-off-by: David Hildenbrand Signed-off-by: Christian Borntraeger --- Reading git-format-patch failed