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Re: [Qemu-devel] [PATCH hack dontapply v2 6/7] acpi: aml generation for

From: Michael S. Tsirkin
Subject: Re: [Qemu-devel] [PATCH hack dontapply v2 6/7] acpi: aml generation for _CST
Date: Thu, 26 Jul 2018 20:26:55 +0300

On Wed, Jul 25, 2018 at 04:39:28PM +0200, Igor Mammedov wrote:
> Fixed dynamic tables are usually more or less self sufficient
> so it's safer to reload so I'm ok with their reloading.

Well it's just a matter of excercising self-control and
building sane APIs to make sure we do.
E.g. let's say we agree on prefix DQ for dynamic tables.

Now, isn't

Name(DQCS, Package() {...} )

which is constrained not to use any names from the main
table not self-sufficient?

To ensure this contraint, we can add APIs like dynamic_name
that add the "DQ" prefix, and we can verify that a dynamic
table does not use a name without this prefix.

> As for current cpuhp interface, it was designed to be extendable
> and we can extend it for CST. It most likely would be much less
> code to extend than it is in this series.

I do have patches that use cpuhp to signal CST changes.
I don't think cpuhp solves the mess that is dynamic
package generation though.


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