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spapr: PEF: prevent migration
We haven't yet implemented the fairly involved handshaking that will be needed to migrate PEF protected guests. For now, just use a migration blocker so we get a meaningful error if someone attempts this (this is the same approach used by AMD SEV). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Greg Kurz <groug@kaod.org>
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@ -44,6 +44,8 @@ struct PefGuest {
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static int kvmppc_svm_init(Error **errp)
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static int kvmppc_svm_init(Error **errp)
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{
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{
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#ifdef CONFIG_KVM
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#ifdef CONFIG_KVM
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static Error *pef_mig_blocker;
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if (!kvm_check_extension(kvm_state, KVM_CAP_PPC_SECURE_GUEST)) {
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if (!kvm_check_extension(kvm_state, KVM_CAP_PPC_SECURE_GUEST)) {
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error_setg(errp,
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error_setg(errp,
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"KVM implementation does not support Secure VMs (is an ultravisor running?)");
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"KVM implementation does not support Secure VMs (is an ultravisor running?)");
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@ -58,6 +60,11 @@ static int kvmppc_svm_init(Error **errp)
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}
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}
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}
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}
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/* add migration blocker */
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error_setg(&pef_mig_blocker, "PEF: Migration is not implemented");
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/* NB: This can fail if --only-migratable is used */
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migrate_add_blocker(pef_mig_blocker, &error_fatal);
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return 0;
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return 0;
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#else
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#else
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g_assert_not_reached();
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g_assert_not_reached();
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