From e497a96ae8eda8b693bebc8f464712cd788d641f Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 1 Jan 2014 16:19:55 +0100 Subject: KVM: s390: cleanup kvm_s390_real_to_abs() Add kerneldoc comment to kvm_s390_real_to_abs() and change the code so it matches the coding style of the rest of gaccess.h. Signed-off-by: Heiko Carstens Reviewed-by: Thomas Huth Signed-off-by: Christian Borntraeger --- arch/s390/kvm/gaccess.h | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) (limited to 'arch') diff --git a/arch/s390/kvm/gaccess.h b/arch/s390/kvm/gaccess.h index ed4749ecef8b..1079c8fc6d0d 100644 --- a/arch/s390/kvm/gaccess.h +++ b/arch/s390/kvm/gaccess.h @@ -19,16 +19,24 @@ #include #include "kvm-s390.h" -/* Convert real to absolute address by applying the prefix of the CPU */ +/** + * kvm_s390_real_to_abs - convert guest real address to guest absolute address + * @vcpu - guest virtual cpu + * @gra - guest real address + * + * Returns the guest absolute address that corresponds to the passed guest real + * address @gra of a virtual guest cpu by applying its prefix. + */ static inline unsigned long kvm_s390_real_to_abs(struct kvm_vcpu *vcpu, - unsigned long gaddr) + unsigned long gra) { - unsigned long prefix = vcpu->arch.sie_block->prefix; - if (gaddr < 2 * PAGE_SIZE) - gaddr += prefix; - else if (gaddr >= prefix && gaddr < prefix + 2 * PAGE_SIZE) - gaddr -= prefix; - return gaddr; + unsigned long prefix = vcpu->arch.sie_block->prefix; + + if (gra < 2 * PAGE_SIZE) + gra += prefix; + else if (gra >= prefix && gra < prefix + 2 * PAGE_SIZE) + gra -= prefix; + return gra; } /** -- cgit v1.2.3