From: David Gibson <david@gibson.dropbear.id.au> To: dgilbert@redhat.com, pair@us.ibm.com, qemu-devel@nongnu.org, brijesh.singh@amd.com, pasic@linux.ibm.com Cc: pragyansri.pathi@intel.com, Greg Kurz <groug@kaod.org>, richard.henderson@linaro.org, berrange@redhat.com, David Hildenbrand <david@redhat.com>, mdroth@linux.vnet.ibm.com, kvm@vger.kernel.org, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, pbonzini@redhat.com, mtosatti@redhat.com, borntraeger@de.ibm.com, Cornelia Huck <cohuck@redhat.com>, qemu-ppc@nongnu.org, David Gibson <david@gibson.dropbear.id.au>, qemu-s390x@nongnu.org, thuth@redhat.com, mst@redhat.com, frankja@linux.ibm.com, jun.nakajima@intel.com, andi.kleen@intel.com, Eduardo Habkost <ehabkost@redhat.com> Subject: [PATCH v8 11/13] spapr: PEF: prevent migration Date: Tue, 2 Feb 2021 15:13:13 +1100 [thread overview] Message-ID: <20210202041315.196530-12-david@gibson.dropbear.id.au> (raw) In-Reply-To: <20210202041315.196530-1-david@gibson.dropbear.id.au> 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> --- hw/ppc/pef.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/ppc/pef.c b/hw/ppc/pef.c index f9fd1f2a71..573be3ed79 100644 --- a/hw/ppc/pef.c +++ b/hw/ppc/pef.c @@ -44,6 +44,8 @@ struct PefGuest { static int kvmppc_svm_init(Error **errp) { #ifdef CONFIG_KVM + static Error *pef_mig_blocker; + if (!kvm_check_extension(kvm_state, KVM_CAP_PPC_SECURE_GUEST)) { error_setg(errp, "KVM implementation does not support Secure VMs (is an ultravisor running?)"); @@ -58,6 +60,11 @@ static int kvmppc_svm_init(Error **errp) } } + /* add migration blocker */ + error_setg(&pef_mig_blocker, "PEF: Migration is not implemented"); + /* NB: This can fail if --only-migratable is used */ + migrate_add_blocker(pef_mig_blocker, &error_fatal); + return 0; #else g_assert_not_reached(); -- 2.29.2
WARNING: multiple messages have this Message-ID (diff)
From: David Gibson <david@gibson.dropbear.id.au> To: dgilbert@redhat.com, pair@us.ibm.com, qemu-devel@nongnu.org, brijesh.singh@amd.com, pasic@linux.ibm.com Cc: thuth@redhat.com, Cornelia Huck <cohuck@redhat.com>, berrange@redhat.com, mst@redhat.com, kvm@vger.kernel.org, David Hildenbrand <david@redhat.com>, jun.nakajima@intel.com, mtosatti@redhat.com, richard.henderson@linaro.org, mdroth@linux.vnet.ibm.com, Eduardo Habkost <ehabkost@redhat.com>, Greg Kurz <groug@kaod.org>, pragyansri.pathi@intel.com, qemu-s390x@nongnu.org, frankja@linux.ibm.com, qemu-ppc@nongnu.org, andi.kleen@intel.com, pbonzini@redhat.com, borntraeger@de.ibm.com, David Gibson <david@gibson.dropbear.id.au> Subject: [PATCH v8 11/13] spapr: PEF: prevent migration Date: Tue, 2 Feb 2021 15:13:13 +1100 [thread overview] Message-ID: <20210202041315.196530-12-david@gibson.dropbear.id.au> (raw) In-Reply-To: <20210202041315.196530-1-david@gibson.dropbear.id.au> 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> --- hw/ppc/pef.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/ppc/pef.c b/hw/ppc/pef.c index f9fd1f2a71..573be3ed79 100644 --- a/hw/ppc/pef.c +++ b/hw/ppc/pef.c @@ -44,6 +44,8 @@ struct PefGuest { static int kvmppc_svm_init(Error **errp) { #ifdef CONFIG_KVM + static Error *pef_mig_blocker; + if (!kvm_check_extension(kvm_state, KVM_CAP_PPC_SECURE_GUEST)) { error_setg(errp, "KVM implementation does not support Secure VMs (is an ultravisor running?)"); @@ -58,6 +60,11 @@ static int kvmppc_svm_init(Error **errp) } } + /* add migration blocker */ + error_setg(&pef_mig_blocker, "PEF: Migration is not implemented"); + /* NB: This can fail if --only-migratable is used */ + migrate_add_blocker(pef_mig_blocker, &error_fatal); + return 0; #else g_assert_not_reached(); -- 2.29.2
next prev parent reply other threads:[~2021-02-02 4:15 UTC|newest] Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-02 4:13 [PATCH v8 00/13] Generalize memory encryption models David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 01/13] qom: Allow optional sugar props David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 02/13] confidential guest support: Introduce new confidential guest support class David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 03/13] sev: Remove false abstraction of flash encryption David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 04/13] confidential guest support: Move side effect out of machine_set_memory_encryption() David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 05/13] confidential guest support: Rework the "memory-encryption" property David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 06/13] sev: Add Error ** to sev_kvm_init() David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 07/13] confidential guest support: Introduce cgs "ready" flag David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-03 10:42 ` Dr. David Alan Gilbert 2021-02-03 10:42 ` Dr. David Alan Gilbert 2021-02-03 16:15 ` Greg Kurz 2021-02-03 16:15 ` Greg Kurz 2021-02-04 2:45 ` David Gibson 2021-02-04 2:45 ` David Gibson 2021-02-10 16:25 ` Venu Busireddy 2021-02-10 16:25 ` Venu Busireddy 2021-02-11 23:48 ` David Gibson 2021-02-11 23:48 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 08/13] confidential guest support: Move SEV initialization into arch specific code David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-03 16:19 ` Greg Kurz 2021-02-03 16:19 ` Greg Kurz 2021-02-02 4:13 ` [PATCH v8 09/13] confidential guest support: Update documentation David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 10/13] spapr: Add PEF based confidential guest support David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-03 17:50 ` Greg Kurz 2021-02-03 17:50 ` Greg Kurz 2021-02-04 2:47 ` David Gibson 2021-02-04 2:47 ` David Gibson 2021-02-02 4:13 ` David Gibson [this message] 2021-02-02 4:13 ` [PATCH v8 11/13] spapr: PEF: prevent migration David Gibson 2021-02-02 4:13 ` [PATCH v8 12/13] confidential guest support: Alter virtio default properties for protected guests David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-02 23:06 ` Michael S. Tsirkin 2021-02-02 23:06 ` Michael S. Tsirkin 2021-02-03 4:53 ` David Gibson 2021-02-03 4:53 ` David Gibson 2021-02-02 4:13 ` [PATCH v8 13/13] s390: Recognize confidential-guest-support option David Gibson 2021-02-02 4:13 ` David Gibson 2021-02-03 9:05 ` Christian Borntraeger 2021-02-03 9:05 ` Christian Borntraeger
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