lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 29 Nov 2017 16:49:08 +0100
From:   Borislav Petkov <>
To:     "Kirill A. Shutemov" <>
Cc:     Ingo Molnar <>,,
        Thomas Gleixner <>,
        "H. Peter Anvin" <>,
        Linus Torvalds <>,
        Andy Lutomirski <>,
        Cyrill Gorcunov <>,
        Andi Kleen <>,,
Subject: Re: [PATCHv2 0/4] x86: 5-level related changes into decompression

On Sat, Nov 11, 2017 at 01:06:41AM +0300, Kirill A. Shutemov wrote:
> Hi Ingo,
> Here's updated changes that prepare the code to boot-time switching between
> paging modes and handle booting in 5-level mode when bootloader put kernel
> image above 4G, but haven't enabled 5-level paging for us.

Btw, if I enable CONFIG_X86_5LEVEL with 4.15-rc1 on an AMD box, the box
triple-faults and ends up spinning in a reboot loop. Even though it
should say:

early console in setup code
This kernel requires the following features not present on the CPU:
Unable to boot - please use a kernel appropriate for your CPU.

and halt.

A kvm guest still does that but baremetal triple-faults.



SUSE Linux GmbH, GF: Felix Imend├Ârffer, Jane Smithard, Graham Norton, HRB 21284 (AG N├╝rnberg)

Powered by blists - more mailing lists