From: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> commit c5d1f6b531e68888cbe6718b3f77a60115d58b9c upstream. A new function _kvm_s390_real_to_abs will apply prefixing to a real address with a given prefix value. The old kvm_s390_real_to_abs becomes now a wrapper around the new function. This is needed to avoid code duplication in vSIE. Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Link: https://lore.kernel.org/r/20210322140559.500716-2-imbrenda@xxxxxxxxxxxxx Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/s390/kvm/gaccess.h | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) --- a/arch/s390/kvm/gaccess.h +++ b/arch/s390/kvm/gaccess.h @@ -21,17 +21,14 @@ /** * kvm_s390_real_to_abs - convert guest real address to guest absolute address - * @vcpu - guest virtual cpu + * @prefix - guest prefix * @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. + * address @gra of by applying the given prefix. */ -static inline unsigned long kvm_s390_real_to_abs(struct kvm_vcpu *vcpu, - unsigned long gra) +static inline unsigned long _kvm_s390_real_to_abs(u32 prefix, unsigned long gra) { - unsigned long prefix = kvm_s390_get_prefix(vcpu); - if (gra < 2 * PAGE_SIZE) gra += prefix; else if (gra >= prefix && gra < prefix + 2 * PAGE_SIZE) @@ -40,6 +37,20 @@ static inline unsigned long kvm_s390_rea } /** + * 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 gra) +{ + return _kvm_s390_real_to_abs(kvm_s390_get_prefix(vcpu), gra); +} + +/** * kvm_s390_logical_to_effective - convert guest logical to effective address * @vcpu: guest virtual cpu * @ga: guest logical address
