linux-kernel - Re: [tip:x86/boot] x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G

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Message-ID: <20180213084121.GA19906@outlook.office365.com>
Date:   Tue, 13 Feb 2018 00:41:22 -0800
From:   Andrei Vagin <avagin@...tuozzo.com>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     tip-bot for Jacob Shin <tipbot@...or.com>,
        kirill.shutemov@...ux.intel.com, linux-tip-commits@...r.kernel.org,
        tglx@...utronix.de, willy@...radead.org, gorcunov@...nvz.org,
        bp@...e.de, peterz@...radead.org, torvalds@...ux-foundation.org,
        mingo@...nel.org, hpa@...or.com, linux-kernel@...r.kernel.org,
        luto@...capital.net
Subject: Re: [tip:x86/boot] x86/boot/compressed/64: Handle 5-level paging
 boot if kernel is above 4G

On Tue, Feb 13, 2018 at 11:08:16AM +0300, Kirill A. Shutemov wrote:
> On Mon, Feb 12, 2018 at 10:51:56PM -0800, Andrei Vagin wrote:
> > Hi Kirill,
> > 
> > Something is wrong in this patch.
> 
> Was it bisected to exactly this patch? Is the previous one fine?

Yes. Yes.
> 
> > We regularly run CRIU tests on linux-next, and yesterday I found that a
> > kernel didn't boot. We run this tests in Travis-CI, and we don't have
> > access to kernel logs. I tried to reproduce the problem localy, but I
> > failed.
> 
> Do you know anything about host kernel which handles kexec?


Distributor ID:	Ubuntu
Description:	Ubuntu 14.04.5 LTS
Release:	14.04
Codename:	trusty
Linux Version	4.4.0-51-generic

+ uname -a
Linux travis-job-43f4b617-65d3-4621-bd05-911efa0d69df 4.4.0-51-generic #72~14.04.1-Ubuntu SMP Thu Nov 24 19:22:30 UTC 2016 x86_64 x86_64 x86_64 GNU/Linu

> 
> -- 
>  Kirill A. Shutemov