[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device |
Date: |
Mon, 08 Jun 2015 15:55:14 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 08/06/2015 15:52, Gal Hammer wrote:
>>> 2. Is it possible to create a sysbus device using the "-device" command
>>> line argument? I vaguely recall that it is not possible to do it and
>>> that's the reason that I specifically add the device in the pc init.
>>
>> It's now possible, but it is somewhat complicated. I think it's simpler
>> to initialize this unconditionally and hide it (via ACPI _STA) if the
>> vmgenid is all zeros.
>
> I didn't understand. I need the device to be a sysbus device so it won't
> be found as an ISA or a PCI device by Windows. So I need to know what
> ever or not it is possible to create a sysbus device using "-device". In
> either way it won't be created if vmgenid is not given so no need to
> hide it using _STA.
Windows doesn't enumerate ISA devices when you create them with -device.
It just enumerates devices from the ACPI DSDT/SSDT. So it's okay to
make it an ISADevice, or to make it a part of another device (e.g. the
ISA bridge or the power management device). It's still ugly though.
If you make it a sysbus device, you can just add it unconditionally, and
define _STA so that Windows only sees it under the appropriate
circumstances: for example, return 0 from _STA if the vmgenid (from the
command line) is all zeroes.
What is the command line option like? Is it "-global vmgenid.uuid=foo"?
Paolo
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Michael S. Tsirkin, 2015/06/03
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Paolo Bonzini, 2015/06/03
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Gal Hammer, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Paolo Bonzini, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Gal Hammer, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Daniel P. Berrange, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Gal Hammer, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Michael S. Tsirkin, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Paolo Bonzini, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Michael S. Tsirkin, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Gal Hammer, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Michael S. Tsirkin, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Paolo Bonzini, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Michael S. Tsirkin, 2015/06/08
- Re: [Qemu-devel] [PATCH V15 4/5] i386: add a Virtual Machine Generation ID device, Paolo Bonzini, 2015/06/08