Re: [Xen-devel] [PATCH] libxl: Specify the target ram size to Qemu (new) when calling it

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Anthony Perard writes ("Re: [Xen-devel] [PATCH] libxl: Specify the target ram 
size to Qemu (new) when calling it"):
> On Thu, 6 Jan 2011, Keir Fraser wrote:
> > Qemu used to be responsible for initialising BIOS info tables, including
> > memory size information such as e820, in lieu of the virtual BIOS doing it.
> > I ripped all that out from our diverged tree, and put it in
> > hvmloader/rombios, but maybe they still do it in upstream qemu. I think it
> > would be harmless if so, since hvmloader/rombios will overwrite/ignore.
> 
> There are another reason, qemu "allocate" the memory for the vga at a
> dynamic address. In qemu-xen, this address is static. So qemu need to
> know the size of the ram to put the memory of the vga after the ram.
> Qemu do the same for other memory like the rom of a nic.
> 
> Information about the ram is put in the struct RAMBlock of qemu.

Right.  OK, I'll stop worrying :-).

Ian.

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