Re: [PATCH] x86 debugctl MSR access interface

[Ananth N Mavinakayanahalli]

On Fri, Nov 07, 2008 at 03:44:09PM +0100, stephane eranian wrote:
> Hello,
> 
> On Intel X86 processors, the DEBUGCTL msr contains lots of bits
> to control various unrelated features, such as LBR, BTS, PMU.
> 
> Nowadays, several subsystems need access to this MSR to set or
> clear the bits they care about. In 2.6.27, the new DS/BTS interface
> was introduced and DEBUGCTL can now be cleared and restored
> on context switches.
> 
> The KPROBE interface also uses DEBUGCTL.

Stephane,

I see no problems with the kprobes part of the patch.

Ananth
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