[Xen-devel] Re: [Crash-utility] xencrash fixes for xen-3.3.0

[Itsuro ODA]

Hi,

It is very helpful.

Thanks
Itsuro Oda

On Tue, 07 Oct 2008 14:55:00 +0100
Keir Fraser <keir.fraser at eu.citrix.com> wrote:

> On 7/10/08 14:39, "Dave Anderson" <anderson at redhat.com> wrote:
> 
> > The patch looks OK.  But just for sanity's sake, is it guaranteed that
> > the per_cpu data section will be greater than 4k on both architectures?
> > Or could there be some combination of xen CONFIG options that could
> > reduce the i386 per_cpu data section contents to less than 4K even though
> > PERCPU_SHIFT is 13?
> 
> PERCPU_SHIFT has only ever been 12 or 13 so far, and it's unlikely to ever
> get smaller. Ongoing, we could help you out by defining some useful label in
> our linker script. For example, __per_cpu_shift = PERCPU_SHIFT (or
> '__per_cpu_start + PERCPU_SHIFT', as I'm not sure about creating labels
> outside the virtual address ranges defined by the object file).
> 
>  -- Keir
> 
> 
> 
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-- 
Itsuro ODA <oda at valinux.co.jp>