| title: | Re MMU notifiers review and some proposals |
|
On Sat, Jul 26, 2008 at 01:38:13PM +0200, Andrea Arcangeli wrote:
On Sat, Jul 26, 2008 at 05:08:10AM +0200, Nick Piggin wrote:
Anyway, I just voice my opinion and let Andrew and Linus decide. To be
clear: I have not found any actual bugs in Andreas -mm patchset, only
some dislikes of the approach.
Yes, like I said I think this is a matter of taste of what you like of
the tradeoff. There are disadvantages and advantages in both and if we
wait forever to please everyone taste, itll never go in.
And for this item, I think there has been a bit too much emphasis
on pleasing the taste of the drivers and not enough on the core
VM. My concern about adding a new TLB flushing design to core VM
was never taken seriously, for example. Nor was my request for
performance numbers. And I did ask early in the year.
I believe when you dont have any real numbers for justification,
the only sane thing to do is go with the most minimal and simplest
implementation first, and add complexity if/when it can be justified.
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