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KVM: s390: Allow NULL parameter for kvm_s390_get_regs_rre

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We're not always interested in both registers that are specified
for an RRE instruction. So allow NULL as parameter, too, to indicate
that we do not need the corresponding value.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Thomas Huth 2013-09-12 10:33:46 +02:00 committed by Paolo Bonzini
parent 800c1065c3
commit ff7158b227
1 changed files with 4 additions and 2 deletions
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6
arch/s390/kvm/kvm-s390.h
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@ -90,8 +90,10 @@ static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
{
*r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
*r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
if (r1)
*r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
if (r2)
*r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
}
static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)