From: "Daniel P. Berrangé" <berrange@redhat.com>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: pair@us.ibm.com, pbonzini@redhat.com, frankja@linux.ibm.com,
brijesh.singh@amd.com, dgilbert@redhat.com,
qemu-devel@nongnu.org, Eduardo Habkost <ehabkost@redhat.com>,
qemu-ppc@nongnu.org, rth@twiddle.net, thuth@redhat.com,
mdroth@linux.vnet.ibm.com, Marcelo Tosatti <mtosatti@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Marcel Apfelbaum <marcel.apfelbaum@gmail.com>,
david@redhat.com,
Richard Henderson <richard.henderson@linaro.org>,
borntraeger@de.ibm.com, cohuck@redhat.com, kvm@vger.kernel.org,
qemu-s390x@nongnu.org, pasic@linux.ibm.com
Subject: Re: [for-6.0 v5 00/13] Generalize memory encryption models
Date: Fri, 4 Dec 2020 09:50:05 +0000 [thread overview]
Message-ID: <20201204095005.GB3056135@redhat.com> (raw)
In-Reply-To: <20201204054415.579042-1-david@gibson.dropbear.id.au>
On Fri, Dec 04, 2020 at 04:44:02PM +1100, David Gibson wrote:
> A number of hardware platforms are implementing mechanisms whereby the
> hypervisor does not have unfettered access to guest memory, in order
> to mitigate the security impact of a compromised hypervisor.
>
> AMD's SEV implements this with in-cpu memory encryption, and Intel has
> its own memory encryption mechanism. POWER has an upcoming mechanism
> to accomplish this in a different way, using a new memory protection
> level plus a small trusted ultravisor. s390 also has a protected
> execution environment.
>
> The current code (committed or draft) for these features has each
> platform's version configured entirely differently. That doesn't seem
> ideal for users, or particularly for management layers.
>
> AMD SEV introduces a notionally generic machine option
> "machine-encryption", but it doesn't actually cover any cases other
> than SEV.
>
> This series is a proposal to at least partially unify configuration
> for these mechanisms, by renaming and generalizing AMD's
> "memory-encryption" property. It is replaced by a
> "securable-guest-memory" property pointing to a platform specific
> object which configures and manages the specific details.
There's no docs updated or added in this series.
docs/amd-memory-encryption.txt needs an update at least, and
there ought to be a doc added describing how this series is
to be used for s390/ppc
> accel/kvm/kvm-all.c | 39 +------
> accel/kvm/sev-stub.c | 10 +-
> accel/stubs/kvm-stub.c | 10 --
> backends/meson.build | 1 +
> backends/securable-guest-memory.c | 30 +++++
> hw/core/machine.c | 71 ++++++++++--
> hw/i386/pc_sysfw.c | 6 +-
> hw/ppc/meson.build | 1 +
> hw/ppc/pef.c | 124 +++++++++++++++++++++
> hw/ppc/spapr.c | 10 ++
> hw/s390x/pv.c | 58 ++++++++++
> include/exec/securable-guest-memory.h | 86 +++++++++++++++
> include/hw/boards.h | 2 +-
> include/hw/ppc/pef.h | 26 +++++
> include/hw/s390x/pv.h | 1 +
> include/qemu/typedefs.h | 1 +
> include/qom/object.h | 3 +-
> include/sysemu/kvm.h | 17 ---
> include/sysemu/sev.h | 5 +-
> qom/object.c | 4 +-
> softmmu/vl.c | 16 ++-
> target/i386/kvm.c | 12 ++
> target/i386/monitor.c | 1 -
> target/i386/sev.c | 153 ++++++++++++--------------
> target/ppc/kvm.c | 18 ---
> target/ppc/kvm_ppc.h | 6 -
> target/s390x/kvm.c | 3 +
> 27 files changed, 510 insertions(+), 204 deletions(-)
> create mode 100644 backends/securable-guest-memory.c
> create mode 100644 hw/ppc/pef.c
> create mode 100644 include/exec/securable-guest-memory.h
> create mode 100644 include/hw/ppc/pef.h
Regards,
Daniel
--
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next prev parent reply other threads:[~2020-12-04 9:52 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-04 5:44 [for-6.0 v5 00/13] Generalize memory encryption models David Gibson
2020-12-04 5:44 ` [for-6.0 v5 01/13] qom: Allow optional sugar props David Gibson
2020-12-04 12:57 ` Cornelia Huck
2020-12-14 21:25 ` Eduardo Habkost
2021-01-11 18:04 ` Philippe Mathieu-Daudé
2020-12-04 5:44 ` [for-6.0 v5 02/13] securable guest memory: Introduce new securable guest memory base class David Gibson
2020-12-04 5:44 ` [for-6.0 v5 03/13] securable guest memory: Handle memory encryption via interface David Gibson
2020-12-04 13:10 ` Cornelia Huck
2021-01-08 4:03 ` David Gibson
2021-01-12 3:49 ` David Gibson
2020-12-04 5:44 ` [for-6.0 v5 04/13] securable guest memory: Move side effect out of machine_set_memory_encryption() David Gibson
2020-12-04 5:44 ` [for-6.0 v5 05/13] securable guest memory: Rework the "memory-encryption" property David Gibson
2021-01-11 18:09 ` Philippe Mathieu-Daudé
2020-12-04 5:44 ` [for-6.0 v5 06/13] securable guest memory: Decouple kvm_memcrypt_*() helpers from KVM David Gibson
2021-01-11 18:13 ` Philippe Mathieu-Daudé
2021-01-12 3:03 ` David Gibson
2020-12-04 5:44 ` [for-6.0 v5 07/13] sev: Add Error ** to sev_kvm_init() David Gibson
2020-12-14 16:50 ` Cornelia Huck
2020-12-04 5:44 ` [for-6.0 v5 08/13] securable guest memory: Introduce sgm "ready" flag David Gibson
2020-12-14 17:00 ` Cornelia Huck
2020-12-17 5:38 ` David Gibson
2020-12-17 11:24 ` Cornelia Huck
2020-12-04 5:44 ` [for-6.0 v5 09/13] securable guest memory: Move SEV initialization into arch specific code David Gibson
2020-12-04 5:44 ` [for-6.0 v5 10/13] spapr: Add PEF based securable guest memory David Gibson
2021-01-05 23:34 ` Ram Pai
2021-01-08 0:34 ` David Gibson
2020-12-04 5:44 ` [for-6.0 v5 11/13] spapr: PEF: prevent migration David Gibson
2020-12-14 17:22 ` Cornelia Huck
2020-12-17 5:47 ` David Gibson
2020-12-17 11:38 ` Cornelia Huck
2020-12-17 14:15 ` Greg Kurz
2020-12-18 11:41 ` Cornelia Huck
2020-12-18 12:08 ` Dr. David Alan Gilbert
2021-01-04 7:15 ` Ram Pai
2021-01-04 12:46 ` [EXTERNAL] " Halil Pasic
2021-01-04 18:40 ` Ram Pai
2021-01-05 10:56 ` [EXTERNAL] " Halil Pasic
2021-01-05 20:41 ` Ram Pai
2021-01-11 16:59 ` Cornelia Huck
2021-01-11 19:58 ` Ram Pai
2021-01-12 8:19 ` Cornelia Huck
2021-01-12 18:55 ` Ram Pai
2021-01-13 8:06 ` Cornelia Huck
2021-01-15 18:55 ` Ram Pai
2021-01-19 8:19 ` Cornelia Huck
2021-01-19 9:59 ` Daniel P. Berrangé
2021-01-14 11:23 ` Daniel P. Berrangé
2021-01-13 12:42 ` Dr. David Alan Gilbert
2021-01-14 10:28 ` Christian Borntraeger
2021-01-14 10:36 ` Dr. David Alan Gilbert
2021-01-14 10:52 ` Christian Borntraeger
2021-01-14 11:05 ` Cornelia Huck
2021-01-14 11:45 ` Dr. David Alan Gilbert
2021-01-14 11:50 ` Christian Borntraeger
2021-01-14 12:20 ` Daniel P. Berrangé
2021-01-14 14:04 ` Cornelia Huck
2021-01-14 14:09 ` Christian Borntraeger
2021-01-14 14:15 ` Daniel P. Berrangé
2021-01-14 15:25 ` Christian Borntraeger
2021-01-14 15:33 ` Daniel P. Berrangé
2021-01-15 18:24 ` Ram Pai
2021-01-14 11:25 ` Daniel P. Berrangé
2021-01-14 23:51 ` David Gibson
2021-01-18 17:39 ` Dr. David Alan Gilbert
2021-01-19 8:28 ` Christian Borntraeger
2021-01-19 8:34 ` Cornelia Huck
2020-12-04 5:44 ` [for-6.0 v5 12/13] securable guest memory: Alter virtio default properties for protected guests David Gibson
2020-12-04 8:10 ` Christian Borntraeger
2020-12-04 8:17 ` Cornelia Huck
2020-12-04 8:29 ` Christian Borntraeger
2020-12-04 14:43 ` Halil Pasic
2020-12-08 1:54 ` David Gibson
2020-12-08 8:16 ` Christian Borntraeger
2020-12-08 10:28 ` Halil Pasic
2020-12-08 12:50 ` Cornelia Huck
2020-12-17 5:53 ` David Gibson
2020-12-04 17:04 ` Cornelia Huck
2020-12-04 5:44 ` [for-6.0 v5 13/13] s390: Recognize securable-guest-memory option David Gibson
2020-12-15 11:45 ` Cornelia Huck
2020-12-17 5:54 ` David Gibson
2020-12-04 8:06 ` [for-6.0 v5 00/13] Generalize memory encryption models Christian Borntraeger
2020-12-04 13:02 ` Cornelia Huck
2020-12-04 13:07 ` Dr. David Alan Gilbert
2020-12-04 13:12 ` Cornelia Huck
2020-12-08 2:57 ` David Gibson
2020-12-08 12:43 ` Cornelia Huck
2020-12-17 6:21 ` David Gibson
2020-12-17 11:43 ` Cornelia Huck
2020-12-04 13:25 ` Daniel P. Berrangé
2020-12-04 13:51 ` Halil Pasic
2020-12-08 2:54 ` David Gibson
2020-12-04 9:50 ` Daniel P. Berrangé [this message]
2021-01-12 3:02 ` David Gibson
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