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s390x/pci: fixup ind_offset of msix routing entry

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The guest uses the mpcifc instruction to register the aibvo of a zpci
device, which is the starting offset of indicators in the indicator
area and thus remains constant. Each msix vector is an offset from the
aibvo. When we map a msix route to an adapter route, we should not
modify the starting offset, but instead add the vector to the starting
offset to get the absolute offset in the specific route.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Message-Id: <1504606380-49341-3-git-send-email-zyimin@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Yi Min Zhao 2017-09-05 12:12:59 +02:00 committed by Cornelia Huck
parent ceb7054fd4
commit 01c36195d6
1 changed files with 1 additions and 3 deletions
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4
target/s390x/kvm.c
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@ -2436,14 +2436,12 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
return -ENODEV;
}
pbdev->routes.adapter.ind_offset = vec;
route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
route->flags = 0;
route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset;
route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset + vec;
route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
return 0;
}