linux-kernel - Re: [PATCH V2 0/4] x86/entry: simply stack switching when exception on userspace

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Date:   Sat, 27 Jun 2020 14:03:49 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Lai Jiangshan <jiangshanlai+lkml@...il.com>,
        Andy Lutomirski <luto@...nel.org>,
        Lai Jiangshan <laijs@...ux.alibaba.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        X86 ML <x86@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Alexandre Chartre <alexandre.chartre@...cle.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Jann Horn <jannh@...gle.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>
Subject: Re: [PATCH V2 0/4] x86/entry: simply stack switching when exception
 on userspace

On Thu, Jun 18, 2020 at 7:10 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>
> Lai,
>
> Lai Jiangshan <jiangshanlai+lkml@...il.com> writes:
>
> > Hello and Ping
>
> you have poked on that on Tuesday, i.e. 2 days ago. It's on the todo
> list, but not the must urgent problem on the planet.
>

Just as a heads up, I'd be surprised if I can get to this in time for
5.9.  I'm still dealing with the fallout from 5.8-rc1, and there's no
shortage of fallout...

-Andy