KVM: s390: split SIE state guest prefix field

This patch splits the SIE state guest prefix at offset 4
into a prefix bit field. Additionally it provides the
access functions:

 - kvm_s390_get_prefix()
 - kvm_s390_set_prefix()

to access the prefix per vcpu.

Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index 004d385d9519..0161675878a2 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -23,7 +23,7 @@
 static int diag_release_pages(struct kvm_vcpu *vcpu)
 {
         unsigned long start, end;
-        unsigned long prefix  = vcpu->arch.sie_block->prefix;
+        unsigned long prefix  = kvm_s390_get_prefix(vcpu);
 
         start = vcpu->run->s.regs.gprs[(vcpu->arch.sie_block->ipa & 0xf0) >> 4];
         end = vcpu->run->s.regs.gprs[vcpu->arch.sie_block->ipa & 0xf] + 4096;