Re: [patch 07/20] Allow paravirt backend to choose kernel PMD sharing

[Jeremy Fitzhardinge]

Christoph Lameter wrote:
> Acked-by: Christoph Lameter <clameter@xxxxxxx>
>
> for all thats worth since I am not a i386 specialist.
>
> How much of the issues with page struct sharing between slab and arch code 
> does this address?
>   

I haven't been following that thread as closely as I should be, so I
don't have an answer.  I guess the interesting thing in this patch is
that it only uses the pmd cache for usermode pmds (which are
pre-zeroed), and normal page allocations for kernel pmds.  Also, if the
kernel pmds are unshared, the pgds are page-sized, so its not really
making good use of the pgd cache.

    J
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/