lkml.org 
[lkml]   [2004]   [Apr]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: hugetlb demand paging patch part [0/3]
    On Wed, Apr 14, 2004 at 11:04:02AM +0200, Arjan van de Ven wrote:
    > On Wed, 2004-04-14 at 01:17, Chen, Kenneth W wrote:
    > > In addition to the hugetlb commit handling that we've been working on
    > > off the list, Ray Bryant of SGI and I are also working on demand paging
    > > for hugetlb page. Here are our final version that has been heavily
    > > tested on ia64 and x86. I've broken the patch into 3 pieces so it's
    > > easier to read/review, etc.
    >
    > Ok I think it's time to say "HO STOP" here.
    >
    > If you're going to make the kernel deal with different, concurrent page
    > sizes then please do it for real. Or alternatively leave hugetlb to be
    > the kludge/hack it is right now. Anything inbetween is the road to
    > madness...

    Well, bear in mind that in a number of ways these patches actually
    simplify the hugetlb code, although I think most of that is not
    inherently related to making the hugepage allocation on-demand rather
    than prefaulted. Nonetheless, doing the demand allocation is actually
    really easy. Even if you add COW as well, which these patches don't,
    it doesn't actually make the hack any worse than it was already, but
    it does make it more useful.

    --
    David Gibson | For every complex problem there is a
    david AT gibson.dropbear.id.au | solution which is simple, neat and
    | wrong.
    http://www.ozlabs.org/people/dgibson
    [unhandled content-type:application/pgp-signature]
    \
     
     \ /
      Last update: 2005-03-22 14:02    [W:3.371 / U:0.016 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site