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Re: [Xen-devel] [PATCH 00/07] HVM firmware passthrough


At 09:24 +0000 on 20 Mar (1332235452), Tim Deegan wrote:
> My impression from the earlier discussions is that we're pasing largish
> blobs of binary BIOS goop around, which aren't suitable to go into
> xenstore.  Dropping them in memory where HVMloader can pick them up
> seems reasonable.
> All the control-path stuff - what the blobs are, where they are &c,
> should go through Xenstore, though.

So having looked at the code, I think the module system is really
overkill - AIUI all the things you're talking about passing through are
ACPI tables, which have their own length fields internally.  So all
you'd need to do is have a type code and an address in xenstore
somewhere, the same way we pass a type code and a string for the other
BIOS customizations.



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