linux-kernel - Re: [BUGFIX PATCH V2 0/3] kprobes/arm: Improve kprobes implementation on arm

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Message-Id: <20170223082619.b36fca9c6a91d48d6e8e2235@kernel.org>
Date:   Thu, 23 Feb 2017 08:26:19 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     "Jon Medhurst (Tixy)" <tixy@...aro.org>
Cc:     Russell King <linux@...linux.org.uk>, linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>, Wang Nan <wangnan0@...wei.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        "David A . Long" <dave.long@...aro.org>,
        Sandeepa Prabhu <sandeepa.s.prabhu@...il.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [BUGFIX PATCH V2 0/3] kprobes/arm: Improve kprobes
 implementation on arm

On Wed, 22 Feb 2017 15:58:49 +0000
"Jon Medhurst (Tixy)" <tixy@...aro.org> wrote:

> On Sat, 2017-02-18 at 06:43 +0900, Masami Hiramatsu wrote:
> > On Fri, 17 Feb 2017 11:01:10 +0000
> > "Jon Medhurst (Tixy)" <tixy@...aro.org> wrote:
> [...]
> > > Meantime
> > > I'll investigate the kprobes test failures I see (which actually looks
> > > like cache/TLB issues and not test code problems after all).
> > 
> > OK, btw, I couldn't reproduce the kprobes test failure with
> > CONFIG_DEBUG_RODATA=y on qemu...
> 
> That's because it's a problem with caches which qemu doesn't emulate.
> I worked out the cause and posted a patch...
> http://lists.infradead.org/pipermail/linux-arm-kernel/2017-February/489517.html

OK, I see.

Thanks! 

-- 
Masami Hiramatsu <mhiramat@...nel.org>