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pqap instruction missing cc fix

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vsie shadow creation race fix
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Merge tag 'kvm-s390-master-6.8-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

pqap instruction missing cc fix
vsie shadow creation race fix
This commit is contained in:
Paolo Bonzini 2024-01-26 12:57:12 -05:00
commit 3f5198c7f6
3 changed files with 7 additions and 3 deletions
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8
arch/s390/kvm/priv.c
View File

@ -676,8 +676,12 @@ static int handle_pqap(struct kvm_vcpu *vcpu)
if (vcpu->kvm->arch.crypto.pqap_hook) {
pqap_hook = *vcpu->kvm->arch.crypto.pqap_hook;
ret = pqap_hook(vcpu);
if (!ret && vcpu->run->s.regs.gprs[1] & 0x00ff0000)
kvm_s390_set_psw_cc(vcpu, 3);
if (!ret) {
if (vcpu->run->s.regs.gprs[1] & 0x00ff0000)
kvm_s390_set_psw_cc(vcpu, 3);
else
kvm_s390_set_psw_cc(vcpu, 0);
}
up_read(&vcpu->kvm->arch.crypto.pqap_hook_rwsem);
return ret;
}

1
arch/s390/kvm/vsie.c
View File

@ -1235,7 +1235,6 @@ static int acquire_gmap_shadow(struct kvm_vcpu *vcpu,
gmap = gmap_shadow(vcpu->arch.gmap, asce, edat);
if (IS_ERR(gmap))
return PTR_ERR(gmap);
gmap->private = vcpu->kvm;
vcpu->kvm->stat.gmap_shadow_create++;
WRITE_ONCE(vsie_page->gmap, gmap);
return 0;

1
arch/s390/mm/gmap.c
View File

@ -1691,6 +1691,7 @@ struct gmap *gmap_shadow(struct gmap *parent, unsigned long asce,
return ERR_PTR(-ENOMEM);
new->mm = parent->mm;
new->parent = gmap_get(parent);
new->private = parent->private;
new->orig_asce = asce;
new->edat_level = edat_level;
new->initialized = false;