linux-kernel - Re: 4.17.x won't boot due to "x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G"

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Message-ID: <20180703110059.o3qm2jyb4qqit55x@kshutemo-mobl1>
Date:   Tue, 3 Jul 2018 14:01:00 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Benjamin Gilbert <bgilbert@...hat.com>,
        linux-x86_64@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: 4.17.x won't boot due to "x86/boot/compressed/64: Handle 5-level
 paging boot if kernel is above 4G"

On Tue, Jul 03, 2018 at 10:59:48AM +0200, Thomas Gleixner wrote:
> On Tue, 3 Jul 2018, Kirill A. Shutemov wrote:
> 
> > On Mon, Jul 02, 2018 at 07:01:28PM +0000, Benjamin Gilbert wrote:
> > > On Mon, Jul 02, 2018 at 12:34:50PM +0300, Kirill A. Shutemov wrote:
> > > > Could you check if you can trigger the issue with my changes to config and
> > > > the way I run KVM?
> > > 
> > > Yes, the issue still triggers in that case.  I've also verified that the
> > > kernel boots normally with your qemu command if the commit is reverted.
> > 
> > Hm. What toolchain do you use?
> 
> On Sun, Jul 01, 2018 at 05:15:59PM -0400, Benjamin Gilbert wrote:
> > 4.17 kernels built with the CoreOS Container Linux toolchain and kconfig, 

I've built the kernel with toolchain from CoreOS alpha (gcc-7.3.0,
binutils-2.29.1). Still cannot trigger the problem.

Benjamin, could you share the kernel image?

-- 
 Kirill A. Shutemov