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KVM: s390: ucontrol: export SIE control block to user

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This patch exports the s390 SIE hardware control block to userspace
via the mapping of the vcpu file descriptor. In order to do so,
a new arch callback named kvm_arch_vcpu_fault  is introduced for all
architectures. It allows to map architecture specific pages.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Carsten Otte
2012-03-05 14:52:19 +02:00
committed by Avi Kivity
parent e168bf8de3
commit 5b1c1493af
8 changed files with 37 additions and 1 deletions
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virt/kvm/kvm_main.c
+1 -1
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@@ -1657,7 +1657,7 @@ static int kvm_vcpu_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
page = virt_to_page(vcpu->kvm->coalesced_mmio_ring);
#endif
else
return VM_FAULT_SIGBUS;
return kvm_arch_vcpu_fault(vcpu, vmf);
get_page(page);
vmf->page = page;
return 0;