Ingo Molnar wrote:
> nice one! I suspect we could simplify some of the less
> performance-critical open-coded pagetable walker loops in the kernel
> with this? (i'm not even sure it's all that much of a performance loss
> to pass a function pointer around - would be nice to convert say
> mprotect() to this and see the performance difference?)
>
apply_page_to_range has the side-effect of allocating all the pagetable
levels for the address range it walks. Xen uses this to populate
pagetables (for example, build out the pagetable, and let the hypervisor
plug a mapping into the pte page).
If that's OK for the other uses, then it should be good.
J
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
