lkml.org 
[lkml]   [2009]   [May]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 0/5] Support for sanitization flag in low-level page allocator
> It's pretty damn obvious that Larry's patches have a much bigger
> performance impact than using kzfree() for selected parts of the
> kernel. So yes, I do expect him to benchmark and demonstrate that
> kzfree() has _performance problems_ before we can look into merging
> his patches.

We seem to be muddling up multiple things here which is not helpful.

There are three things going on

#1 Is ksize() buggy ?

#2 Using kzfree() to clear specific bits of memory (and I question the
kzfree implementation as it seems ksize can return numbers much much
bigger than the allocated space you need to clear - correct but oversize)
or using other flags. I'd favour kzfree personally (and fixing it to work
properly)

#3 People wanting to be able to select for more security *irrespective*
of performance cost. Which is no different to SELinux for example.


Conflating them all into one mess is causing confusion



\
 
 \ /
  Last update: 2009-05-31 01:13    [W:0.236 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site