[lkml]   [2008]   [Feb]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] [12/12] GBPAGES: Switch direct mapping setup over to set_pte
Andi Kleen wrote:
>> Why? 64-bit Xen will need this to be set_pmd if its an update to L2 of
>> the table.
> Then change_page_attr() and hugepages will already not work because they both
> do exactly that.
> And I didn't want to duplicate this manual code for the GBpages case, so i
> changed it everywhere to the standard way.

It's a bit moot because Xen doesn't support any kind of large page yet,
but there has been some work in that area. The main problem with using
set_pte is that Xen supports trap'n'emulate for pte-level accesses, but
not for upper levels.

Looks like you're right about the rest of cpa; may as well make it all
consistent for now, and we can fix it later when the need arises.


 \ /
  Last update: 2008-02-01 20:19    [W:0.043 / U:1.160 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site