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From: "Michael S. Tsirkin" <mst@redhat.com>
To: Ben Warren <ben@skyportsystems.com>
Cc: Ed Swierk <eswierk@skyportsystems.com>,
	qemu-devel@nongnu.org, Igor Mammedov <imammedo@redhat.com>,
	Laszlo Ersek <lersek@redhat.com>
Subject: Re: [Qemu-devel] Virtual Machine Generation ID
Date: Tue, 17 Jan 2017 19:45:32 +0200	[thread overview]
Message-ID: <20170117194321-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <85C3D50B-7AFD-41E7-AD1B-634A42D04BB2@skyportsystems.com>

On Mon, Jan 16, 2017 at 10:57:42AM -0800, Ben Warren wrote:
> I think we have a misunderstanding here.  I’m storing the VM
> Generation ID __data__ (a GUID) in a fw_cfg blob, not the address.

Yes, I think I gathered this much from the discussion. This is what
I'm saying - don't. Have guest loader reserve guest memory and write the
address into a fw cfg blob, and have qemu write the id at that address.
This way you can update guest memory at any time.

-- 
MST

  parent reply	other threads:[~2017-01-17 17:45 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-16  0:23 [Qemu-devel] Virtual Machine Generation ID Ed Swierk
2016-09-16  0:36 ` Michael S. Tsirkin
2016-10-04 22:51   ` Ed Swierk
2016-10-05  9:45     ` Igor Mammedov
2016-10-06  1:29     ` Michael S. Tsirkin
2016-12-07  2:15       ` Ben Warren
2016-12-11  3:28         ` Michael S. Tsirkin
2017-01-15  6:17           ` Ben Warren
2017-01-16  8:47             ` Igor Mammedov
2017-01-16 14:21             ` Michael S. Tsirkin
2017-01-16 18:57               ` Ben Warren
2017-01-17 13:26                 ` Igor Mammedov
2017-01-17 14:26                   ` Ed Swierk
2017-01-17 14:33                     ` Michael S. Tsirkin
2017-01-17 15:01                       ` Ed Swierk
2017-01-17 15:21                         ` Michael S. Tsirkin
2017-01-17 17:35                           ` Ben Warren
2017-01-17 16:24                         ` Igor Mammedov
2017-01-17 17:42                           ` Michael S. Tsirkin
2017-01-17 17:45                 ` Michael S. Tsirkin [this message]
2017-01-19  0:02                   ` Ben Warren
2017-01-19  7:09                     ` Ben Warren
2017-01-19  9:25                       ` Laszlo Ersek
2017-01-19 17:47                         ` Ben Warren
2017-01-19 18:20                           ` Laszlo Ersek

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