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

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Message-ID: <20240626104648.GBZnvxmMXCZbEhoqls@fat_crate.local>
Date: Wed, 26 Jun 2024 12:46:48 +0200
From: Borislav Petkov <bp@...en8.de>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
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 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...

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette