Re: [RFC PATCH 01/09] robust VM per_cpu core
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- To: Steven Rostedt <rostedt@xxxxxxxxxxx>
- Subject: Re: [RFC PATCH 01/09] robust VM per_cpu core
- From: Andi Kleen <ak@xxxxxxx>
- Date: Wed, 17 May 2006 11:17:04 +0200
- Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, Paul Mackerras <paulus@xxxxxxxxx>, Nick Piggin <nickpiggin@xxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Martin Mares <mj@xxxxxxxxxxxxxxxxxxxxxxxx>, bjornw@xxxxxxxx, schwidefsky@xxxxxxxxxx, benedict.gaster@xxxxxxxxxx, lethal@xxxxxxxxxxxx, Chris Zankel <chris@xxxxxxxxxx>, Marc Gauthier <marc@xxxxxxxxxxxxx>, Joe Taylor <joe@xxxxxxxxxxxxx>, David Mosberger-Tang <davidm@xxxxxxxxxx>, rth@xxxxxxxxxxx, spyro@xxxxxxx, starvik@xxxxxxxx, tony.luck@xxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, ralf@xxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxx, grundler@xxxxxxxxxxxxxxxx, parisc-linux@xxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxx, linux390@xxxxxxxxxx, davem@xxxxxxxxxxxxx, arnd@xxxxxxxx, kenneth.w.chen@xxxxxxxxx, sam@xxxxxxxxxxxx, clameter@xxxxxxx, kiran@xxxxxxxxxxxx
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> 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.
And we already have boot_ioremap on some architectures. Why is that not
enough?
-Andi
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