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xen-devel
[Xen-devel] Re: [RFC PATCH 07/35] Make LOAD_OFFSET defined by subarch
On Tuesday 28 March 2006 02:49, Gerd Hoffmann wrote:
>
> > This makes me a little nervous, since the ELF loading code is working fine
for
> > PPC at the moment. What exactly are you planning on changing?
>
> Basically what the suggestion outlined: use physical address + VIRT_BASE
> instead of placing virtual addresses into the physical address fields.
> Some discussions on that went over the list some weeks ago. Patch
> attached for reference.
> + * bug comparibility alert: old linux kernels used to have
> + * virtual addresses in the paddr headers, whereas newer ones
> + * (since kexec merge, around 2.6.14) correctly use physical
> + * addresses.
("comparibility" -> "compatibility")
I can't speak for IA64, but PPC kernels still have virtual addresses in the
paddr fields. Accordingly, I would reword it like this:
Some Linux kernels have virtual addresses in the paddr headers, and some
correctly use physical addresses.
Please CC xen-ppc-devel (and probably xen-ia64-devel) when you submit the
patch so we can make sure this logic works for PPC. Thanks!
--
Hollis Blanchard
IBM Linux Technology Center
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