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KVM: s390: Machine Check

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Store additional status in the machine check handler, in order to
collect status (such as vector registers) that is not defined by
store status.

Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Eric Farman
2014-04-14 16:01:09 -04:00
committed by Christian Borntraeger
parent cd7b4b6106
commit bc17de7c96
4 changed files with 37 additions and 0 deletions
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29
arch/s390/kvm/kvm-s390.c
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@@ -2031,6 +2031,35 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr)
return kvm_s390_store_status_unloaded(vcpu, addr);
}
/*
* store additional status at address
*/
int kvm_s390_store_adtl_status_unloaded(struct kvm_vcpu *vcpu,
unsigned long gpa)
{
/* Only bits 0-53 are used for address formation */
if (!(gpa & ~0x3ff))
return 0;
return write_guest_abs(vcpu, gpa & ~0x3ff,
(void *)&vcpu->run->s.regs.vrs, 512);
}
int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu *vcpu, unsigned long addr)
{
if (!test_kvm_facility(vcpu->kvm, 129))
return 0;
/*
* The guest VXRS are in the host VXRs due to the lazy
* copying in vcpu load/put. Let's update our copies before we save
* it into the save area.
*/
save_vx_regs((__vector128 *)&vcpu->run->s.regs.vrs);
return kvm_s390_store_adtl_status_unloaded(vcpu, addr);
}
static void __disable_ibs_on_vcpu(struct kvm_vcpu *vcpu)
{
kvm_check_request(KVM_REQ_ENABLE_IBS, vcpu);