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KVM: s390: factor out actual delivery of machine checks

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Let's factor this out to prepare for bigger changes. Reorder to calls to
match the logical order given in the PoP.

Reviewed-by: Cornelia Huck <cornelia.huck@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 2015-10-14 16:47:36 +02:00 committed by Christian Borntraeger
parent fa8410b355
commit d6404ded30
1 changed files with 31 additions and 23 deletions
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54
arch/s390/kvm/interrupt.c
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@ -400,12 +400,40 @@ static int __must_check __deliver_pfault_init(struct kvm_vcpu *vcpu)
return rc ? -EFAULT : 0;
}
static int __write_machine_check(struct kvm_vcpu *vcpu,
struct kvm_s390_mchk_info *mchk)
{
unsigned long ext_sa_addr;
int rc;
/* Extended save area */
rc = read_guest_lc(vcpu, __LC_VX_SAVE_AREA_ADDR, &ext_sa_addr,
sizeof(unsigned long));
rc |= kvm_s390_vcpu_store_adtl_status(vcpu, ext_sa_addr);
/* General interruption information */
rc |= write_guest_lc(vcpu, __LC_MCK_OLD_PSW,
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
rc |= read_guest_lc(vcpu, __LC_MCK_NEW_PSW,
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
rc |= put_guest_lc(vcpu, mchk->mcic, (u64 __user *) __LC_MCCK_CODE);
/* Register-save areas */
rc |= kvm_s390_vcpu_store_status(vcpu, KVM_S390_STORE_STATUS_PREFIXED);
/* Extended interruption information */
rc |= put_guest_lc(vcpu, mchk->failing_storage_address,
(u64 __user *) __LC_MCCK_FAIL_STOR_ADDR);
rc |= write_guest_lc(vcpu, __LC_PSW_SAVE_AREA, &mchk->fixed_logout,
sizeof(mchk->fixed_logout));
return rc ? -EFAULT : 0;
}
static int __must_check __deliver_machine_check(struct kvm_vcpu *vcpu)
{
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
struct kvm_s390_mchk_info mchk = {};
unsigned long adtl_status_addr;
int deliver = 0;
int rc = 0;
@ -446,29 +474,9 @@ static int __must_check __deliver_machine_check(struct kvm_vcpu *vcpu)
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id,
KVM_S390_MCHK,
mchk.cr14, mchk.mcic);
rc = kvm_s390_vcpu_store_status(vcpu,
KVM_S390_STORE_STATUS_PREFIXED);
rc |= read_guest_lc(vcpu, __LC_VX_SAVE_AREA_ADDR,
&adtl_status_addr,
sizeof(unsigned long));
rc |= kvm_s390_vcpu_store_adtl_status(vcpu,
adtl_status_addr);
rc |= put_guest_lc(vcpu, mchk.mcic,
(u64 __user *) __LC_MCCK_CODE);
rc |= put_guest_lc(vcpu, mchk.failing_storage_address,
(u64 __user *) __LC_MCCK_FAIL_STOR_ADDR);
rc |= write_guest_lc(vcpu, __LC_PSW_SAVE_AREA,
&mchk.fixed_logout,
sizeof(mchk.fixed_logout));
rc |= write_guest_lc(vcpu, __LC_MCK_OLD_PSW,
&vcpu->arch.sie_block->gpsw,
sizeof(psw_t));
rc |= read_guest_lc(vcpu, __LC_MCK_NEW_PSW,
&vcpu->arch.sie_block->gpsw,
sizeof(psw_t));
rc = __write_machine_check(vcpu, &mchk);
}
return rc ? -EFAULT : 0;
return rc;
}
static int __must_check __deliver_restart(struct kvm_vcpu *vcpu)