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KVM: s390: pv: refactoring of kvm_s390_pv_deinit_vm

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Refactor kvm_s390_pv_deinit_vm to improve readability and simplify the
improvements that are coming in subsequent patches.

No functional change intended.

Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/r/20220628135619.32410-12-imbrenda@linux.ibm.com
Message-Id: <20220628135619.32410-12-imbrenda@linux.ibm.com>
[frankja@linux.ibm.com: Dropped commit message line regarding review]
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
This commit is contained in:
Claudio Imbrenda 2022-06-28 15:56:12 +02:00 committed by Janosch Frank
parent 9bf811dae4
commit da15fbc646
1 changed files with 8 additions and 8 deletions
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16
arch/s390/kvm/pv.c
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@ -176,17 +176,17 @@ int kvm_s390_pv_deinit_vm(struct kvm *kvm, u16 *rc, u16 *rrc)
cc = uv_cmd_nodata(kvm_s390_pv_get_handle(kvm),
UVC_CMD_DESTROY_SEC_CONF, rc, rrc);
WRITE_ONCE(kvm->arch.gmap->guest_handle, 0);
if (!cc)
if (!cc) {
atomic_dec(&kvm->mm->context.protected_count);
kvm_s390_pv_dealloc_vm(kvm);
} else {
/* Intended memory leak on "impossible" error */
s390_replace_asce(kvm->arch.gmap);
}
KVM_UV_EVENT(kvm, 3, "PROTVIRT DESTROY VM: rc %x rrc %x", *rc, *rrc);
WARN_ONCE(cc, "protvirt destroy vm failed rc %x rrc %x", *rc, *rrc);
/* Intended memory leak on "impossible" error */
if (!cc) {
kvm_s390_pv_dealloc_vm(kvm);
return 0;
}
s390_replace_asce(kvm->arch.gmap);
return -EIO;
return cc ? -EIO : 0;
}
static void kvm_s390_pv_mmu_notifier_release(struct mmu_notifier *subscription,