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Subject: Re: [PATCH V2 02/15] x86/fsgsbase/64: Make ptrace read FS/GS base accurately
To: Andy Lutomirski <luto@kernel.org>,
        "Bae, Chang Seok" <chang.seok.bae@intel.com>
CC: Andrew Lutomirski <luto@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@kernel.org>,
        Andi Kleen <ak@linux.intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        "Metzger, Markus T" <markus.t.metzger@intel.com>,
        "Ravi V. Shankar" <ravi.v.shankar@intel.com>,
        LKML <linux-kernel@vger.kernel.org>
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On May 31, 2018 1:14:59 PM PDT, Andy Lutomirski <luto@kernel.org> wrote:
>On Thu, May 31, 2018 at 10:58 AM Chang S. Bae
><chang.seok.bae@intel.com> wrote:
>>
>> From: Andy Lutomirski <luto@kernel.org>
>>
>> ptrace can read FS/GS base using the register access API
>> (PTRACE_PEEKUSER, etc) or PTRACE_ARCH_PRCTL.  Make both of these
>> mechanisms return the actual FS/GS base.
>>
>> This will improve debuggability by providing the correct information
>> to ptracer (GDB and etc).
>
>LGTM.

LGTM?
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