linux-kernel - Re: [PATCH 14/15] x86/fsgsbase/64: Support legacy behavior when FS/GS updated by ptracer

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Message-ID: <E3872173-6EDB-4861-896E-4D636A5A9B55@intel.com>
Date:   Thu, 22 Mar 2018 16:46:22 +0000
From:   "Bae, Chang Seok" <chang.seok.bae@...el.com>
To:     Andy Lutomirski <luto@...nel.org>
CC:     X86 ML <x86@...nel.org>, Andi Kleen <ak@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "Metzger, Markus T" <markus.t.metzger@...el.com>,
        "Luck, Tony" <tony.luck@...el.com>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 14/15] x86/fsgsbase/64: Support legacy behavior when
 FS/GS updated by ptracer

> But your patch doesn't actually do this, since gdb will just do
> SETREGS anyway, right?
GDB does SETREGS on any exclusive (FS/GS) updates in inferior call.