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KVM: s390: cleanup kvm_s390_real_to_abs()

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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 <heiko.carstens@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Heiko Carstens 2014-01-01 16:19:55 +01:00 committed by Christian Borntraeger
parent 3263bd1637
commit e497a96ae8
1 changed files with 16 additions and 8 deletions
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24
arch/s390/kvm/gaccess.h
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@ -19,16 +19,24 @@
#include <linux/ptrace.h>
#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;
}
/**