lkml.org 
[lkml]   [2003]   [Dec]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [DOCUMENTATION] Revised Unreliable Kernel Locking Guide
On Fri, Dec 12, 2003 at 04:24:18PM +1100, Rusty Russell wrote:
> OK, I've put the html version up for your reading pleasure: the diff
> is quite extensive and hard to read.
>
> http://www.kernel.org/pub/linux/kernel/people/rusty/kernel-locking/
>
> Feedback welcome,

Hi Rusty,
Might be worth mentioning in the Per-CPU data section that code doing
operations on CPU registers (MSRs and the like) needs to be protected
by an explicit preempt_disable() / preempt_enable() pair if it's doing
operations that it expects to run on a specific CPU.

For examples, see arch/i386/kernel/msr.c & cpuid.c

Dave

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:59    [W:1.799 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site