linux-kernel - Re: [PATCH v6 12/17] x86/alternatives: Teach text_poke

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Message-ID: <20200710184434.26a5c868@oasis.local.home>
Date:   Fri, 10 Jul 2020 18:44:34 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, mhiramat@...nel.org,
        bristot@...hat.com, jbaron@...mai.com,
        torvalds@...ux-foundation.org, tglx@...utronix.de,
        mingo@...nel.org, namit@...are.com, hpa@...or.com, luto@...nel.org,
        ard.biesheuvel@...aro.org, jpoimboe@...hat.com,
        pbonzini@...hat.com, mathieu.desnoyers@...icios.com,
        linux@...musvillemoes.dk
Subject: Re: [PATCH v6 12/17] x86/alternatives: Teach text_poke_bp() to
 emulate RET

On Fri, 10 Jul 2020 15:38:43 +0200
Peter Zijlstra <peterz@...radead.org> wrote:

> Future patches will need to poke a RET instruction, provide the
> infrastructure required for this.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>

Much easier than emulating a CALL :-)

Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>

-- Steve