Re: [PATCH] QEMU - provide e820 reserve through qemu_cfg

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On Mon, Jan 25, 2010 at 06:13:35PM +0100, Jes Sorensen wrote:
> On 01/25/10 17:58, Alexander Graf wrote:
> >Howdy. Congratulations to the new mail address - looks neat ;-).
> 
> :-)
> 
> >Two comments:
> >
> >1) I don't see how passing a single region is any help. I'd rather like to see a device tree like table structure
> >You'd get one variable for len of the table, one with the contents. So for a universal reserved region specifier you'd get:
> >
> ><u64 base><u64 len>
> >
> >Then have len=2 and put data in the table:
> >
> ><u64 base1><u64 len1><u64 base2><u64 len2>
> >
> >That way we'd get 2 entries and the chance to enhance them later on. In fact, it might even make sense to pass the whole table in such a form. That way qemu generates all of the e820 tables and we can declare whatever we want. Just add a type field in the table.
> 
> I am fine with having QEMU build the e820 tables completely if there is
> a consensus to take that path.
> 
QEMU can't build the e820 map completely. There are things it doesn't
know. Like how much memory ACPI tables take and where they are located.

> >2) Please inline patches. They showed up as attachments here, making them really hard to comment on.
> 
> Sorry Thunderbug doesn't do that well, but they should be attached as
> txt?
> 
> Cheers,
> Jes
> 
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			Gleb.
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