From: Igor Mammedov <imammedo@redhat.com>
To: qemu-devel@nongnu.org
Cc: ehabkost@redhat.com, mst@redhat.com, ghammer@redhat.com,
lersek@redhat.com, lcapitulino@redhat.com
Subject: [Qemu-devel] [PATCH v19 2/9] docs: vm generation id device's description
Date: Thu, 28 Jan 2016 11:54:24 +0100 [thread overview]
Message-ID: <1453978470-222624-3-git-send-email-imammedo@redhat.com> (raw)
In-Reply-To: <1453978470-222624-1-git-send-email-imammedo@redhat.com>
From: Gal Hammer <ghammer@redhat.com>
Signed-off-by: Gal Hammer <ghammer@redhat.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
docs/specs/vmgenid.txt | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 docs/specs/vmgenid.txt
diff --git a/docs/specs/vmgenid.txt b/docs/specs/vmgenid.txt
new file mode 100644
index 0000000..462d17f
--- /dev/null
+++ b/docs/specs/vmgenid.txt
@@ -0,0 +1,36 @@
+VIRTUAL MACHINE GENERATION ID
+=============================
+
+Copyright (C) 2016 Red Hat, Inc.
+
+This work is licensed under the terms of the GNU GPL, version 2 or later.
+See the COPYING file in the top-level directory.
+
+===
+
+The VM generation ID (vmgenid) device is an emulated device which
+exposes a 128-bit, cryptographically random, integer value identifier.
+This allows management applications (e.g. libvirt) to notify the guest
+operating system when the virtual machine is executed with a different
+configuration (e.g. snapshot execution or creation from a template).
+
+This is specified on the web at: http://go.microsoft.com/fwlink/?LinkId=260709
+
+---
+
+The vmgenid device is a PCI device with the following ACPI ID: "QEMU0003".
+
+The device has a "vmgenid.guid" property, which can be set using
+the command line argument or the QMP interface.
+For example:
+QEMU -device vmgenid,id=FOO,guid="324e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87"
+
+Or to change guid in runtime use:
+ qom-set "/machine/peripheral/FOO.guid" "124e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87"
+
+According to the specification, any change to the GUID executes an
+ACPI notification. The vmgenid device triggers the \_GPE._E00 handler
+which executes the ACPI Notify operation.
+
+Although not specified in Microsoft's document, it is assumed that the
+device is expected to use the little-endian system.
--
1.8.3.1
next prev parent reply other threads:[~2016-01-28 10:54 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-28 10:54 [Qemu-devel] [PATCH v19 0/9] Virtual Machine Generation ID Igor Mammedov
2016-01-28 10:54 ` [Qemu-devel] [PATCH v19 1/9] acpi: extend ACPI interface to provide access to ACPI registers and SCI irq Igor Mammedov
2016-01-28 10:54 ` Igor Mammedov [this message]
2016-01-28 10:54 ` [Qemu-devel] [PATCH v19 3/9] pc: add a Virtual Machine Generation ID device Igor Mammedov
2016-01-28 11:13 ` Michael S. Tsirkin
2016-01-28 12:03 ` Igor Mammedov
2016-01-28 12:59 ` Michael S. Tsirkin
2016-01-29 11:13 ` Igor Mammedov
2016-01-31 16:22 ` Michael S. Tsirkin
2016-02-02 9:59 ` Igor Mammedov
2016-02-02 11:16 ` Michael S. Tsirkin
2016-02-09 10:46 ` Igor Mammedov
2016-02-09 12:17 ` Michael S. Tsirkin
2016-02-11 15:16 ` Igor Mammedov
2016-02-11 16:30 ` Michael S. Tsirkin
2016-02-11 17:34 ` Marcel Apfelbaum
2016-02-12 6:15 ` Michael S. Tsirkin
2016-02-15 10:30 ` Igor Mammedov
2016-02-15 11:26 ` Michael S. Tsirkin
2016-02-15 13:56 ` Igor Mammedov
2016-02-16 10:05 ` Marcel Apfelbaum
2016-02-16 12:17 ` Igor Mammedov
2016-02-16 12:36 ` Marcel Apfelbaum
2016-02-16 13:51 ` Igor Mammedov
2016-02-16 14:53 ` Michael S. Tsirkin
2016-02-16 15:10 ` Michael S. Tsirkin
2016-02-10 8:51 ` Michael S. Tsirkin
2016-02-10 9:28 ` Michael S. Tsirkin
2016-02-10 10:00 ` Laszlo Ersek
2016-01-28 13:48 ` Laszlo Ersek
2016-01-28 10:54 ` [Qemu-devel] [PATCH v19 4/9] tests: add a unit test for the vmgenid device Igor Mammedov
2016-01-28 10:54 ` [Qemu-devel] [PATCH v19 5/9] qmp/hmp: add query-vm-generation-id and 'info vm-generation-id' commands Igor Mammedov
2016-02-09 17:31 ` Eric Blake
2016-01-28 10:54 ` [Qemu-devel] [PATCH v19 6/9] qmp/hmp: add set-vm-generation-id commands Igor Mammedov
2016-02-09 17:33 ` Eric Blake
2016-01-28 10:54 ` [Qemu-devel] [PATCH v19 8/9] pc: put PIIX3 in slot 1 explicitly and cleanup functions assignment Igor Mammedov
2016-01-28 10:54 ` [Qemu-devel] [PATCH v19 9/9] pc/q53: by default put vmgenid device as an function of ISA bridge Igor Mammedov
2016-01-28 10:58 ` [Qemu-devel] [PATCH v19 7/9] machine: add properties to compat_props incrementaly Igor Mammedov
2016-01-28 14:02 ` Eduardo Habkost
2016-01-28 17:00 ` Igor Mammedov
2016-02-03 17:55 ` [Qemu-devel] qdev & hw/core owner? (was Re: [PATCH v19 7/9] machine: add properties to compat_props incrementaly) Eduardo Habkost
2016-02-03 18:46 ` Laszlo Ersek
2016-02-03 19:06 ` Michael S. Tsirkin
2016-02-04 11:31 ` Paolo Bonzini
2016-02-04 11:41 ` Andreas Färber
2016-02-04 11:55 ` Paolo Bonzini
2016-02-04 12:06 ` Michael S. Tsirkin
2016-02-05 7:49 ` Markus Armbruster
2016-02-05 7:51 ` Marcel Apfelbaum
2016-02-11 19:41 ` Eduardo Habkost
2016-02-12 9:17 ` Marcel Apfelbaum
2016-02-12 11:22 ` Andreas Färber
2016-02-12 18:17 ` Eduardo Habkost
2016-02-12 22:30 ` Paolo Bonzini
2016-02-12 18:09 ` Eduardo Habkost
2016-02-05 7:52 ` Markus Armbruster
2016-02-04 12:03 ` Michael S. Tsirkin
2016-02-04 12:12 ` Marcel Apfelbaum
2016-01-29 12:51 ` [Qemu-devel] [PATCH v19 7/9] machine: add properties to compat_props incrementaly Cornelia Huck
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