Re: [Xen-devel] Re: [PATCH 1/6][RESEND] xen: Add NUMA support to Xen

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 15 May 2006, at 18:11, Ryan Harper wrote:

> When I looked at the x86_64 NUMA code, I noticed that SRAT parsing was
> done by ACPI_NUMA (drivers/acpi/numa.c).  That code requires more ACPI
> support than Xen currently has available.  Rather than pulling in all 
> of
> that ACPI, I chose to start with the i386 SRAT table parser which was
> sufficient for both i386 and x86_64.  I would think that using the
> modified i386 srat.c for parser gets the job done without bringing in
> all of the support needed to compile drivers/acpi/numa.c in Xen.
>
> How about putting the two together: use the i386 SRAT parser and the
> x86_64 srat.c for structures and initialization?
I guess it depends how cleanly it can be done. Can we use the x86/64 
logic pretty much unmodified, but then pull in bits of the i386 parsing 
code as functions that the x86/64 code calls rather than the full-blown 
acpi routines it would usually call into? Or would it be possible to 
pull in drivers/acpi/numa.c without also having to pull in all 80kloc+ 
of acpi crap? This probably needs some thought and/or experimentation!
 -- Keir


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