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authorDavid Hildenbrand <dahi@linux.vnet.ibm.com>2015-10-14 16:47:36 +0200
committerChristian Borntraeger <borntraeger@de.ibm.com>2016-09-08 09:07:51 +0200
commitd6404ded303600a253e1770fa6670236adf12ce9 (patch)
treeacfd998c8cf419818b2d71941cdf6694957cdaf9 /arch/s390
parentfa8410b355251fd30341662a40ac6b22d3e38468 (diff)
KVM: s390: factor out actual delivery of machine checks
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>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/kvm/interrupt.c54
1 files changed, 31 insertions, 23 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 24524c0f3ef8..6e9442aef2d5 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -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)