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KVM: s390: Manually invoke vcpu setup during kvm_arch_vcpu_create()

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Rename kvm_arch_vcpu_setup() to kvm_s390_vcpu_setup() and manually call
the new function during kvm_arch_vcpu_create().  Define an empty
kvm_arch_vcpu_setup() as it's still required for compilation.  This
is effectively a nop as kvm_arch_vcpu_create() and kvm_arch_vcpu_setup()
are called back-to-back by common KVM code.  Obsoleting
kvm_arch_vcpu_setup() paves the way for its removal.

Note, gmap_remove() is now called if setup fails, as s390 was previously
freeing it via kvm_arch_vcpu_destroy(), which is called by common KVM
code if kvm_arch_vcpu_setup() fails.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2019-12-18 13:55:20 -08:00 committed by Paolo Bonzini
parent 5259878432
commit ff72bb55cb
1 changed files with 11 additions and 0 deletions
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11
arch/s390/kvm/kvm-s390.c
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@ -2932,6 +2932,11 @@ static void kvm_s390_vcpu_setup_model(struct kvm_vcpu *vcpu)
}
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
return 0;
}
static int kvm_s390_vcpu_setup(struct kvm_vcpu *vcpu)
{
int rc = 0;
@ -3070,8 +3075,14 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
vcpu->vcpu_id, vcpu, vcpu->arch.sie_block);
trace_kvm_s390_create_vcpu(vcpu->vcpu_id, vcpu, vcpu->arch.sie_block);
rc = kvm_s390_vcpu_setup(vcpu);
if (rc)
goto out_ucontrol_uninit;
return 0;
out_ucontrol_uninit:
if (kvm_is_ucontrol(vcpu->kvm))
gmap_remove(vcpu->arch.gmap);
out_free_sie_block:
free_page((unsigned long)(vcpu->arch.sie_block));
return rc;