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

[Benjamin Gilbert]

On Tue, Jul 03, 2018 at 05:21:50PM +0300, Kirill A. Shutemov wrote:
> I don't know how to solve it. As far as I know we don't support compiling
> kernel with LTO in mainline.
> 
> Any suggestions?
> 
> Benjamin, do you change LDFLAGS or CFLAGS when compiling the kernel?

We're using the standard build flags as far as I can tell.  In particular,
we don't enable LTO, and I've verified that -flto isn't in the build logs.

Here's a sample image:

https://users.developer.core-os.net/bgilbert/4.17/vmlinuz-4.17.3-coreos
https://users.developer.core-os.net/bgilbert/4.17/vmlinux-4.17.3-coreos
https://users.developer.core-os.net/bgilbert/4.17/System.map

--Benjamin Gilbert