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KVM: s390: allow injecting all kinds of machine checks

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Allow to specify CR14, logout area, external damage code
and failed storage address.

Since more then one machine check can be indicated to the guest at
a time we need to combine all indication bits with already pending
requests.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Jens Freimann 2014-08-13 10:09:04 +02:00 committed by Christian Borntraeger
parent 383d0b0501
commit fc2020cfe9
1 changed files with 11 additions and 3 deletions
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14
arch/s390/kvm/interrupt.c
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@ -1063,11 +1063,19 @@ static int __inject_mchk(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
mchk->mcic, 2);
/*
* Combine mcic with previously injected machine checks and
* indicate them all together as described in the Principles
* of Operation, Chapter 11, Interruption action
* Because repressible machine checks can be indicated along with
* exigent machine checks (PoP, Chapter 11, Interruption action)
* we need to combine cr14, mcic and external damage code.
* Failing storage address and the logout area should not be or'ed
* together, we just indicate the last occurrence of the corresponding
* machine check
*/
mchk->cr14 |= irq->u.mchk.cr14;
mchk->mcic |= irq->u.mchk.mcic;
mchk->ext_damage_code |= irq->u.mchk.ext_damage_code;
mchk->failing_storage_address = irq->u.mchk.failing_storage_address;
memcpy(&mchk->fixed_logout, &irq->u.mchk.fixed_logout,
sizeof(mchk->fixed_logout));
if (mchk->mcic & MCHK_EX_MASK)
set_bit(IRQ_PEND_MCHK_EX, &li->pending_irqs);
else if (mchk->mcic & MCHK_REP_MASK)