Peter Zijlstra <pet...@infradead.org> wrote:
> > What should nommu do anyways ? it's not like there's much it can do
> > right ? It should never even hit the fault path to start with ...
>
> Something like the below makes a nommu arm config build.. David, is this
> indeed the correct thing to do for nommu?
>
> ---
> Index: linux-2.6/mm/nommu.c
> ===================================================================
> --- linux-2.6.orig/mm/nommu.c
> +++ linux-2.6/mm/nommu.c
> @@ -190,6 +190,12 @@ int get_user_pages(struct task_struct *t
> }
> EXPORT_SYMBOL(get_user_pages);
>
> +int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm,
> + unsigned long address, unsigned int fault_flags)
> +{
> + BUG(); /* nommu should never call this */
> +}
> +
> /**
> * follow_pfn - look up PFN at a user virtual address
> * @vma: memory mapping
Or perhaps send SEGV? Can 'address' be bad at this point?
Can you inline this for the NOMMU case please?
David
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