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[Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option
From: |
Gleb Natapov |
Subject: |
[Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option |
Date: |
Mon, 28 Jul 2008 19:27:01 +0300 |
On Mon, Jul 28, 2008 at 11:17:33AM -0500, Anthony Liguori wrote:
> Gleb Natapov wrote:
>>
>> CMOS has enough memory for UUID, but UUID is not the only thing that
>> needs to be passed to BIOS, so eventually we can run out of space there.
>>
>
> I'm inclined to think that on a real machine, the UUID is stored in the
> CMOS.
>
Should be easy to check.
>> For example we have a requirement to pass additional ACPI tables that
>> user may specify on command line.
>
> What's the use-case? I don't think this is a very good idea.
>
AFAIK some OEM version of windows needs special ACPI table for
activation.
>> There is no enough space to put those
>> tables into CMOS. What I did is that: BIOS passes to qemu address where to
>> store additional tables (via backdoor) and qemu copies them there. To
>> this scheme to work there should be bidirectional channel between qemu
>> and BIOS. Other then that I am not particularly attached to vmware
>> backdoor :)
>>
>
> You can not arbitrarily extend the backdoor interface. It's an
> interface defined and controlled by VMware. If you extend it, you risk
> breaking other OSes that are assuming that interface has a different
> meaning.
>
I am not disagreeing with you. Lets define another interface that is
acceptable by everyone here and I (or somebody else) will implement it.
--
Gleb.
- [Qemu-devel] [PATCH 0/3]: Add UUID command-line option, Chris Lalancette, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Gleb Natapov, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Anthony Liguori, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Chris Lalancette, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Anthony Liguori, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Chris Lalancette, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Anthony Liguori, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Chris Lalancette, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Gleb Natapov, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Anthony Liguori, 2008/07/28
- [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option,
Gleb Natapov <=
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Blue Swirl, 2008/07/28
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Jamie Lokier, 2008/07/28
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Anthony Liguori, 2008/07/28
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Jamie Lokier, 2008/07/28
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Anthony Liguori, 2008/07/28
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Paul Brook, 2008/07/28
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Anthony Liguori, 2008/07/28
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Gleb Natapov, 2008/07/29
- Re: [Qemu-devel] Re: [PATCH 0/3]: Add UUID command-line option, Jamie Lokier, 2008/07/28
- [Qemu-devel] Re: Re: [PATCH 0/3]: Add UUID command-line option, Sebastian Herbszt, 2008/07/31