linux-kernel - Re: [PATCH V3 0/3] x86/entry: simply stack switching when exception on userspace

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Message-ID: <CAJhGHyBO4E2WJ-8u28B_r_hq9Jj+78dgekxGsVLgxsXN1j6BGQ@mail.gmail.com>
Date:   Thu, 10 Sep 2020 18:12:04 +0800
From:   Lai Jiangshan <jiangshanlai@...il.com>
To:     Lai Jiangshan <laijs@...ux.alibaba.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        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 V3 0/3] x86/entry: simply stack switching when exception
 on userspace

> There are definitely good cleanups in here, but I think it would be
> nice rebased to whatever lands in 5.8-rc1 settles.

Hello, tglx, Andy:

Could you have a review on the patches please?

They are based on 5.9-rc1 and sent when 5.9-rc1 was just settled,
and hoped to get their way into 5.10-rc1.

The first two patches can still be applied to today's tip/master,
(Sep 10 2020). The third can't, and conflicts with a commit just
added 3 days ago(#VC related). But the third removes a short snip
of code only, and is easy to be reviewed or even easy to be
applied manually. I will rebase all of them after they or the first
two are reviewed.

I'm sorry that I have to ask you to review again, because the
patches change the code you've recently changed.

Thanks
Lai