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KVM: s390: clean up prog irq injection on prog irq icpts

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__extract_prog_irq() is used only once for getting the program check data
in one place. Let's combine it with an injection function to avoid a memset
and to prevent misuse on injection by simplifying the interface to only
have the VCPU as parameter.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand 2015-11-04 16:22:19 +01:00 committed by Christian Borntraeger
parent 6597732275
commit f6af84e7e7
1 changed files with 20 additions and 21 deletions
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41
arch/s390/kvm/intercept.c
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@ -136,11 +136,11 @@ static int handle_instruction(struct kvm_vcpu *vcpu)
return -EOPNOTSUPP;
}
static void __extract_prog_irq(struct kvm_vcpu *vcpu,
struct kvm_s390_pgm_info *pgm_info)
static int inject_prog_on_prog_intercept(struct kvm_vcpu *vcpu)
{
memset(pgm_info, 0, sizeof(struct kvm_s390_pgm_info));
pgm_info->code = vcpu->arch.sie_block->iprcc;
struct kvm_s390_pgm_info pgm_info = {
.code = vcpu->arch.sie_block->iprcc,
};
switch (vcpu->arch.sie_block->iprcc & ~PGM_PER) {
case PGM_AFX_TRANSLATION:
@ -153,7 +153,7 @@ static void __extract_prog_irq(struct kvm_vcpu *vcpu,
case PGM_PRIMARY_AUTHORITY:
case PGM_SECONDARY_AUTHORITY:
case PGM_SPACE_SWITCH:
pgm_info->trans_exc_code = vcpu->arch.sie_block->tecmc;
pgm_info.trans_exc_code = vcpu->arch.sie_block->tecmc;
break;
case PGM_ALEN_TRANSLATION:
case PGM_ALE_SEQUENCE:
@ -161,7 +161,7 @@ static void __extract_prog_irq(struct kvm_vcpu *vcpu,
case PGM_ASTE_SEQUENCE:
case PGM_ASTE_VALIDITY:
case PGM_EXTENDED_AUTHORITY:
pgm_info->exc_access_id = vcpu->arch.sie_block->eai;
pgm_info.exc_access_id = vcpu->arch.sie_block->eai;
break;
case PGM_ASCE_TYPE:
case PGM_PAGE_TRANSLATION:
@ -169,32 +169,33 @@ static void __extract_prog_irq(struct kvm_vcpu *vcpu,
case PGM_REGION_SECOND_TRANS:
case PGM_REGION_THIRD_TRANS:
case PGM_SEGMENT_TRANSLATION:
pgm_info->trans_exc_code = vcpu->arch.sie_block->tecmc;
pgm_info->exc_access_id = vcpu->arch.sie_block->eai;
pgm_info->op_access_id = vcpu->arch.sie_block->oai;
pgm_info.trans_exc_code = vcpu->arch.sie_block->tecmc;
pgm_info.exc_access_id = vcpu->arch.sie_block->eai;
pgm_info.op_access_id = vcpu->arch.sie_block->oai;
break;
case PGM_MONITOR:
pgm_info->mon_class_nr = vcpu->arch.sie_block->mcn;
pgm_info->mon_code = vcpu->arch.sie_block->tecmc;
pgm_info.mon_class_nr = vcpu->arch.sie_block->mcn;
pgm_info.mon_code = vcpu->arch.sie_block->tecmc;
break;
case PGM_VECTOR_PROCESSING:
case PGM_DATA:
pgm_info->data_exc_code = vcpu->arch.sie_block->dxc;
pgm_info.data_exc_code = vcpu->arch.sie_block->dxc;
break;
case PGM_PROTECTION:
pgm_info->trans_exc_code = vcpu->arch.sie_block->tecmc;
pgm_info->exc_access_id = vcpu->arch.sie_block->eai;
pgm_info.trans_exc_code = vcpu->arch.sie_block->tecmc;
pgm_info.exc_access_id = vcpu->arch.sie_block->eai;
break;
default:
break;
}
if (vcpu->arch.sie_block->iprcc & PGM_PER) {
pgm_info->per_code = vcpu->arch.sie_block->perc;
pgm_info->per_atmid = vcpu->arch.sie_block->peratmid;
pgm_info->per_address = vcpu->arch.sie_block->peraddr;
pgm_info->per_access_id = vcpu->arch.sie_block->peraid;
pgm_info.per_code = vcpu->arch.sie_block->perc;
pgm_info.per_atmid = vcpu->arch.sie_block->peratmid;
pgm_info.per_address = vcpu->arch.sie_block->peraddr;
pgm_info.per_access_id = vcpu->arch.sie_block->peraid;
}
return kvm_s390_inject_prog_irq(vcpu, &pgm_info);
}
/*
@ -223,7 +224,6 @@ static int handle_itdb(struct kvm_vcpu *vcpu)
static int handle_prog(struct kvm_vcpu *vcpu)
{
struct kvm_s390_pgm_info pgm_info;
psw_t psw;
int rc;
@ -249,8 +249,7 @@ static int handle_prog(struct kvm_vcpu *vcpu)
if (rc)
return rc;
__extract_prog_irq(vcpu, &pgm_info);
return kvm_s390_inject_prog_irq(vcpu, &pgm_info);
return inject_prog_on_prog_intercept(vcpu);
}
/**