linux-kernel - Re: [PATCH -tip 0/3] x86/kprobes: Remoev single-step trap from x86 kprobes

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Message-ID: <CALCETrW6=UTa6DmrPHcjkbpNTBNoTxkxn=kqX2FMnHWcmZYs=g@mail.gmail.com>
Date:   Wed, 17 Mar 2021 10:45:08 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Oleg Nesterov <oleg@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
        "David S . Miller" <davem@...emloft.net>, X86 ML <x86@...nel.org>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH -tip 0/3] x86/kprobes: Remoev single-step trap from x86 kprobes

On Wed, Mar 17, 2021 at 9:27 AM Peter Zijlstra <peterz@...radead.org> wrote:
>
> On Wed, Mar 17, 2021 at 11:55:22PM +0900, Masami Hiramatsu wrote:
> > Hi Andy,
> >
> > Would you think you still need this series to remove iret to kernel?
>
> They're an improvement anyway, let me queue them so that they don't get
> lost.
>
> I'll line them up for tip/x86/core unless anybody else thinks of a
> better place for them and tells me in time ;-)

I agree.  The new code is quite nice.  I'm still not quite sure what
I'm doing with IRET, but thank you very much for the kprobe
improvements.