On Tue, Dec 13, 2011 at 9:00 AM, Matt Evans <[email protected]> wrote:
> This patch adds a new arch directory, powerpc, basic file structure, register
> setup and where necessary stubs out arch-specific functions (e.g. interrupts,
> runloop exits) that later patches will provide. The target is an
> SPAPR-compliant PPC64 machine (i.e. pSeries); there is no support for PPC32 or
> 'bare metal' PPC64 guests as yet. Subsequent patches implement the hcalls and
> RTAS required to boot SPAPR pSeries kernels.
>
> Memory is mapped from hugetlbfs (as that is currently required by upstream
> PPC64
> HV-mode KVM). The mapping of a VRMA region is yet to be implemented; this is
> only necessary on processors that don't support VRMA, e.g. <= P6. Work is
> therefore needed to get this going on pre-P7 CPUs.
>
> Processor state is set up as a guest kernel would expect (both primary and
> secondaries), and SMP is fully supported.
>
> Finally, support is added for simply loading flat binary kernels (plus
> initrd).
> (bzImages are not used on PPC, and this series does not add zImage support or
> an
> ELF loader.) The intention is to later support loading firmware such as SLOF.
>
> Signed-off-by: Matt Evans <[email protected]>
This looks nice and clean - but I don't really know PPC! Would you be
able to point me to some relevant documentation? Are there other PPC
folks out there that would be interested in taking a look at these
patches?
Pekka
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