Re: [RFC PATCH 01/09] robust VM per_cpu core

From: Steven Rostedt <rostedt_at_goodmis.org>
Date: 2006-05-17 20:46:01
On Wed, 17 May 2006, Andi Kleen wrote:

>
> > As well as the following three functions:
> >
> > pud_t *pud_boot_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long addr,
> >                      int cpu);
> > pmd_t *pmd_boot_alloc(struct mm_struct *mm, pud_t *pud, unsigned long addr,
> >                      int cpu);
> > pte_t *pte_boot_alloc(struct mm_struct *mm, pmd_t *pmd, unsigned long addr,
> >                      int cpu);
>
> I'm not sure you can just put them like this into generic code. Some
> architectures are doing strange things with them.

Hmm, like what?

>
> And we already have boot_ioremap on some architectures. Why is that not
> enough?

I thought about using boot_ioremap, but it seems to be an abuse.  Since
I'm not mapping io, but actual memory pages.  So the solution to that
seemed more of a hack.  I then would need to worry about grabbing pages
that were node specific and getting the physical addresses.  It just
looked like a cleaner solution to have an API that was for exactly what it
was meant for.

-- Steve

-
To unsubscribe from this list: send the line "unsubscribe linux-ia64" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Received on Wed May 17 20:47:22 2006

This archive was generated by hypermail 2.1.8 : 2006-05-17 20:47:32 EST