linux-kernel - Re: [PATCH] x86/64/mm: Make 5-level paging support unconditional

lists.openwall.net		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 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date: Wed, 26 Jun 2024 15:00:14 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Borislav Petkov <bp@...en8.de>
Cc: lkp@...el.com, ardb@...nel.org, brijesh.singh@....com, corbet@....net, 
	dave.hansen@...ux.intel.com, hpa@...or.com, jan.kiszka@...mens.com, jgross@...e.com, 
	kbingham@...nel.org, linux-doc@...r.kernel.org, linux-efi@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, luto@...nel.org, michael.roth@....com, 
	mingo@...hat.com, oe-kbuild-all@...ts.linux.dev, peterz@...radead.org, 
	rick.p.edgecombe@...el.com, sandipan.das@....com, tglx@...utronix.de, 
	thomas.lendacky@....com, x86@...nel.org
Subject: Re: [PATCH] x86/64/mm: Make 5-level paging support unconditional

On Wed, Jun 26, 2024 at 12:46:48PM +0200, Borislav Petkov wrote:
> On Wed, Jun 26, 2024 at 01:26:23PM +0300, Kirill A. Shutemov wrote:
> > Both Intel and AMD CPUs support 5-level paging, which is expected to
> > become more widely adopted in the future.
> > 
> > Remove CONFIG_X86_5LEVEL and ifdeffery for it to make it more readable.
> > 
> > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> > Suggested-by: Borislav Petkov <bp@...en8.de>
> > ---
> > 
> >  v2:
> >   - Fix 32-bit build by wrapping p4d_set_huge() and p4d_clear_huge() in
> >     #if CONFIG_PGTABLE_LEVELS > 4
> 
> Is the 0day bot smart enough to detect separate v2 fixups like that and
> re-test using them?
> 
> If not, you can push your tree to your repo so that it can chew on it again
> and report any other potential breakages...

Pushed:

https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git x86/no5lvl-config

-- 
  Kiryl Shutsemau / Kirill A. Shutemov