From: Andy Lutomirski <luto@kernel.org>
To: "Bae, Chang Seok" <chang.seok.bae@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>, X86 ML <x86@kernel.org>,
Andi Kleen <ak@linux.intel.com>, "H. Peter Anvin" <hpa@zytor.com>,
"Metzger, Markus T" <markus.t.metzger@intel.com>,
"Luck, Tony" <tony.luck@intel.com>,
"Shankar, Ravi V" <ravi.v.shankar@intel.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 00/15] x86: Enable FSGSBASE instructions
Date: Wed, 21 Mar 2018 00:40:18 +0000 [thread overview]
Message-ID: <CALCETrU9DiumP9ODKm-dW-MubJSmkFKjGkSJyw34-WbxAK0Xrw@mail.gmail.com> (raw)
In-Reply-To: <3EEB68A1-2C6B-4E8F-B400-1893E49DA1B2@intel.com>
On Tue, Mar 20, 2018 at 4:33 PM, Bae, Chang Seok
<chang.seok.bae@intel.com> wrote:
> On 3/20/18, 08:07, "Andy Lutomirski" <luto@kernel.org> wrote:
>> Can you describe what changed since the last submission? It looks
>> like a lot has changed and this series is much more complicated and
>> much more fragile than it used to be. Why?
>
> According to your overall comments, most concerning part you have right now
> is paranoid entry and ptrace legacy support. (correct me if I'm wong)
> Design-wise, I think they're major changes -- I can follow-up with
> a summary if you want. I responded about paranoid entry. ptrace
> legacy support is simply new that never before AFAIK.
Summary please.
next prev parent reply other threads:[~2018-03-21 0:40 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-19 17:49 [PATCH 00/15] x86: Enable FSGSBASE instructions Chang S. Bae
2018-03-19 17:49 ` [PATCH 01/15] x86/fsgsbase/64: Introduce FS/GS base helper functions Chang S. Bae
2018-03-19 17:49 ` [PATCH 02/15] x86/fsgsbase/64: Make ptrace read FS/GS base accurately Chang S. Bae
2018-03-19 17:49 ` [PATCH 03/15] x86/fsgsbase/64: Use FS/GS base helpers in core dump Chang S. Bae
2018-03-19 17:49 ` [PATCH 04/15] x86/fsgsbase/64: Factor out load FS/GS segments from __switch_to Chang S. Bae
2018-03-19 17:49 ` [PATCH 05/15] x86/ptrace: A new macro to get an offset of user_regs_struct Chang S. Bae
2018-03-19 17:49 ` [PATCH 06/15] x86/fsgsbase/64: Add putregs() to handle multiple elements' setting Chang S. Bae
2018-03-19 17:49 ` [PATCH 07/15] x86/fsgsbase/64: putregs() in a reverse order Chang S. Bae
2018-03-19 17:49 ` [PATCH 08/15] x86/fsgsbase/64: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE Chang S. Bae
2018-03-19 17:49 ` [PATCH 09/15] x86/fsgsbase/64: Add intrinsics/macros for FSGSBASE instructions Chang S. Bae
2018-03-19 17:49 ` [PATCH 10/15] x86/fsgsbase/64: Enable FSGSBASE instructions in helper functions Chang S. Bae
2018-03-19 17:49 ` [PATCH 11/15] x86/fsgsbase/64: Preserve FS/GS state in __switch_to if FSGSBASE is on Chang S. Bae
2018-03-19 17:49 ` [PATCH 12/15] x86/fsgsbase/64: When copying a thread, use FSGSBASE if enabled Chang S. Bae
2018-03-19 17:49 ` [PATCH 13/15] x86/fsgsbase/64: With FSGSBASE, compare GS bases on paranoid_entry Chang S. Bae
2018-03-19 20:05 ` Dave Hansen
2018-03-19 21:12 ` Bae, Chang Seok
2018-03-20 10:16 ` David Laight
2018-03-20 20:07 ` H. Peter Anvin
2018-03-20 20:36 ` Bae, Chang Seok
2018-03-21 0:36 ` Andy Lutomirski
2018-03-21 21:56 ` H. Peter Anvin
2018-03-20 14:58 ` Andy Lutomirski
2018-03-20 16:33 ` Bae, Chang Seok
2018-03-20 17:03 ` Bae, Chang Seok
2018-03-21 22:03 ` H. Peter Anvin
2018-03-22 1:37 ` Andy Lutomirski
2018-03-19 17:49 ` [PATCH 14/15] x86/fsgsbase/64: Support legacy behavior when FS/GS updated by ptracer Chang S. Bae
2018-03-20 15:04 ` Andy Lutomirski
2018-03-20 16:33 ` Bae, Chang Seok
2018-03-21 0:47 ` Andy Lutomirski
2018-03-21 7:01 ` Metzger, Markus T
2018-03-22 1:39 ` Andy Lutomirski
2018-03-21 15:11 ` Bae, Chang Seok
2018-03-22 1:40 ` Andy Lutomirski
2018-03-22 15:45 ` Bae, Chang Seok
2018-03-22 16:07 ` Andy Lutomirski
2018-03-22 16:46 ` Bae, Chang Seok
2018-03-22 16:53 ` Andy Lutomirski
2018-03-22 21:17 ` Bae, Chang Seok
2018-03-22 21:28 ` Andy Lutomirski
2018-03-19 17:49 ` [PATCH 15/15] x86/fsgsbase/64: Enable FSGSBASE by default and add a chicken bit Chang S. Bae
2018-03-20 15:05 ` [PATCH 00/15] x86: Enable FSGSBASE instructions Andy Lutomirski
2018-03-20 15:06 ` Andy Lutomirski
2018-03-20 16:33 ` Bae, Chang Seok
2018-03-21 0:40 ` Andy Lutomirski [this message]
2018-03-21 15:15 ` Bae, Chang Seok
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