linux-kernel - Re: [PATCH V4 7/9] x86/alternative: Batch of patch operations

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Message-ID: <23408225-1768-d01e-4fd6-24289ef673ae@redhat.com>
Date:   Fri, 15 Feb 2019 17:00:49 +0100
From:   Daniel Bristot de Oliveira <bristot@...hat.com>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Borislav Petkov <bp@...en8.de>
Cc:     linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Jiri Kosina <jkosina@...e.cz>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Chris von Recklinghausen <crecklin@...hat.com>,
        Jason Baron <jbaron@...mai.com>, Scott Wood <swood@...hat.com>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Clark Williams <williams@...hat.com>, x86@...nel.org
Subject: Re: [PATCH V4 7/9] x86/alternative: Batch of patch operations

On 2/14/19 3:40 PM, Steven Rostedt wrote:
> On Thu, 14 Feb 2019 15:30:30 +0100
> Borislav Petkov <bp@...en8.de> wrote:
> 
>>> 	void *trampoline;  
>>
>> Well, it ain't a trampoline either. It is a "temporary location to go to while
>> patching is going on".
> 
> 	void *detour;
> 

The comment on top of text_poke_bp() defines:

handler:    address to jump to when the temporary breakpoint is hit

so, how about tmp_jump_addr?

well, detour works as well :-)

thoughts?

Thanks!
-- Daniel