linux-kernel - Re: [PATCH -next] x86/mm/pat: silence a data race in cpa_4k

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Message-Id: <D88FC26A-562F-42BD-8615-FFA8B0A3D4F7@lca.pw>
Date:   Tue, 21 Jan 2020 19:34:03 -0500
From:   Qian Cai <cai@....pw>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Marco Elver <elver@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        the arch/x86 maintainers <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] x86/mm/pat: silence a data race in cpa_4k_install



> On Jan 21, 2020, at 5:18 PM, Borislav Petkov <bp@...en8.de> wrote:
> 
> Btw, looking at the other "inc" CPA statistics functions there, does it
> mean that for KCSAN they all need to be annotated now too?

I don’t know. KCSAN never trigger any warnings for other CPA places yet.