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References: <20220712231328.5294-1-kirill.shutemov@linux.intel.com> <20220712231328.5294-8-kirill.shutemov@linux.intel.com>
In-Reply-To: <20220712231328.5294-8-kirill.shutemov@linux.intel.com>
From:   Alexander Potapenko <glider@google.com>
Date:   Thu, 21 Jul 2022 15:47:47 +0200
Message-ID: <CAG_fn=WTzXSVFQecQwLBpzgobH8b1ayU_N7DrpmFyguAdcXSMg@mail.gmail.com>
Subject: Re: [PATCHv5 07/13] x86: Expose untagging mask in /proc/$PID/arch_status
To:     "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc:     Dave Hansen <dave.hansen@linux.intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        "the arch/x86 maintainers" <x86@kernel.org>,
        Kostya Serebryany <kcc@google.com>,
        Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        Andrey Konovalov <andreyknvl@gmail.com>,
        Taras Madan <tarasmadan@google.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        "H . J . Lu" <hjl.tools@gmail.com>,
        Andi Kleen <ak@linux.intel.com>,
        Rick Edgecombe <rick.p.edgecombe@intel.com>,
        Linux Memory Management List <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>
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On Wed, Jul 13, 2022 at 1:13 AM Kirill A. Shutemov
<kirill.shutemov@linux.intel.com> wrote:
>
> Add a line in /proc/$PID/arch_status to report untag_mask. It can be
> used to find out LAM status of the process from the outside. It is
> useful for debuggers.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Tested-by: Alexander Potapenko <glider@google.com>