linux-kernel - Re: [PATCH] x86/entry/64: Fix native_load_gs_index() SWAPGS handling with IRQ state tracing enabled

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Message-ID: <27714c57-4afc-0a27-72f5-7196391f2c25@linux.intel.com>
Date:   Thu, 30 Nov 2017 10:42:23 +0200
From:   Jarkko Nikula <jarkko.nikula@...ux.intel.com>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH] x86/entry/64: Fix native_load_gs_index() SWAPGS handling
 with IRQ state tracing enabled

On 11/29/2017 08:12 PM, Andy Lutomirski wrote:
> On Wed, Nov 29, 2017 at 9:57 AM, Andy Lutomirski <luto@...nel.org> wrote:
>> On Tue, Nov 28, 2017 at 11:09 PM, Ingo Molnar <mingo@...nel.org> wrote:
>>>
>>> * Jarkko Nikula <jarkko.nikula@...ux.intel.com> wrote:
>>>
>>>> Hi
>>>>
>>>> Suspend-to-ram and resume stopped working on v4.15-rc1 and I bisected it to
>>>> commit ca37e57bbe0c ("x86/entry/64: Add missing irqflags tracing to
>>>> native_load_gs_index()").
>>>>
> 
> Jarkko, can you try the attached patch?  If it survives resume, can
> you see if the log contains anything interesting?
> 
Hmm.. this doesn't apply on top of v4.15-rc1, ca37e57bbe0c, current head 
a0908a1b7d68 or linux-next head 11fed7829bef.

-- 
Jarkko