lkml.org 
[lkml]   [2007]   [Jul]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [patch] use __asm__ and __volatile__ in asm-x86_64/msr.h
Date
On Wednesday 20 June 2007, H. Peter Anvin wrote:
> Andi Kleen wrote:
> >> asm-i386/msr.h should not be exported to userspace at all, it contains
> >> nothing but kernel-internal helpers.
> >
> > Actually rdtsc and rdtscll and potentially rdpmc which is in there can be
> > very useful in user space if you know what you're doing. Unfortunately a
> > lot of its users don't, but not having the include probably won't stop
> > them either.
>
> More likely, people will just re-implement them incorrectly.
>
> However, the rdtsc() definition in the kernel is weird (and removable, I
> think there are no more users -- I have it removed in my MSR driver
> rewrite tree which I need to get off my arse and push.) Most users
> would expect the rdtscll() functionality with the rdtsc() name.

does that mean you'll also take care of cleaning up msr.h ? or do i need to
post another patch ?
-mike
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2007-07-23 02:47    [W:0.115 / U:0.028 seconds]
©2003-2014 Jasper Spaans. Advertise on this site