Re: Uncool feature for TTM introduced by x86, pat: Use page flags to track memtypes of RAM pages

[Andi Kleen]

Jerome Glisse <glisse@xxxxxxxxxxxxxxx> writes:
>
> Can we modify the interface to support again changing from uc to wc
> or wc to uc ? (i can try to do a patch for that).

At least on Intel CPUs that support self-snoop (all modern
ones) that should really be very cheap.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
--
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/