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Date: Sun, 18 Oct 2015 09:24:02 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Borislav Petkov <bp@alien8.de>, linux-kernel@vger.kernel.org,
        Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>,
        x86@kernel.org, Andrew Morton <akpm@linux-foundation.org>,
        Andy Lutomirski <luto@amacapital.net>,
        Andrey Konovalov <andreyknvl@google.com>,
        Kostya Serebryany <kcc@google.com>,
        Alexander Potapenko <glider@google.com>,
        kasan-dev <kasan-dev@googlegroups.com>,
        Denys Vlasenko <dvlasenk@redhat.com>, Andi Kleen <ak@linux.intel.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        Sasha Levin <sasha.levin@oracle.com>,
        Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v4 1/2] compiler, atomics: Provide READ_ONCE_NOKSAN()
Message-ID: <20151018072402.GA15510@gmail.com>
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* Andrey Ryabinin <aryabinin@virtuozzo.com> wrote:

> On 10/16/2015 01:33 PM, Borislav Petkov wrote:
> > On Fri, Oct 16, 2015 at 12:44:53PM +0300, Andrey Ryabinin wrote:
> >> Some code may perform racy by design memory reads. This could be
> >> harmless, yet such code may produce KASAN warnings.
> >>
> >> To hide such accesses from KASAN this patch introduces
> >> READ_ONCE_NOKSAN() macro. KASAN will not check the memory
> >> accessed by READ_ONCE_NOKSAN(). The KernelThreadSanitizer (KTSAN)
> >> is going to ignore it as well.
> > 
> > Frankly, the "NOKSAN" suffix is too specific. I know, I know, I'm
> > bikeshedding but what happens if yet another tool wants to be disabled
> > from checking there and that tool is not *SAN? We rename again?
> > 
> > So the "NOCHECK" suffix made much more sense, even if it was generic.
> > IMNSVHO.
> > 
> 
> Sounds reasonable.
> Ingo, what do you think?

Fine with me too.

Thanks,

	Ingo