On Tue, 21 Jan 2014 14:50:15 +0100
Petr Mladek wrote:
> On Tue, 2014-01-14 at 19:33 -0500, Steven Rostedt wrote:
> > >
> > > /* Patch the first byte. We do not know how to recover from an error. */
> > > - text_poke_or_die(addr, opcode, sizeof(int3));
> > > + text_poke_or_die(addr, opcode, si
On Tue, 2014-01-14 at 19:33 -0500, Steven Rostedt wrote:
> On Tue, 10 Dec 2013 16:42:15 +0100
> Petr Mladek wrote:
>
> > diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
> > index 6436beec7b0c..8e57ac03a0e8 100644
> > --- a/arch/x86/kernel/alternative.c
> > +++ b/arch/x8
On Wed, 15 Jan 2014 17:18:01 +0900
Masami Hiramatsu wrote:
> >> +static char bp_int3;
> >
> > bp_int3 is not going to be anything but 0xcc. Let's change that to:
> >
> > static char bp_int3 = 0xcc;
> >
> > And remove the other initializations.
>
> just a comment.
> If it is always 0xcc, it
(2014/01/15 9:33), Steven Rostedt wrote:
> On Tue, 10 Dec 2013 16:42:15 +0100
> Petr Mladek wrote:
>
>> diff --git a/arch/x86/include/asm/alternative.h
>> b/arch/x86/include/asm/alternative.h
>> index 586747f5f41d..82ffe7e1529c 100644
>> --- a/arch/x86/include/asm/alternative.h
>> +++ b/arch/x86
On Tue, 10 Dec 2013 16:42:15 +0100
Petr Mladek wrote:
> diff --git a/arch/x86/include/asm/alternative.h
> b/arch/x86/include/asm/alternative.h
> index 586747f5f41d..82ffe7e1529c 100644
> --- a/arch/x86/include/asm/alternative.h
> +++ b/arch/x86/include/asm/alternative.h
> @@ -232,4 +232,40 @@ ex
The commit fd4363fff3d9 (x86: Introduce int3 (breakpoint)-based instruction
patching) uses the same technique that has been used in ftrace since 08d636b
("ftrace/x86: Have arch x86_64 use breakpoints instead of stop machine")
When trying to use text_poke_bp in dynamic ftrace, the process was signi
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