linux-kernel - Re: [PATCHv6 04/16] x86/efi: Move runtime service initialization to arch/x86

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Message-ID: <ba766193-e344-4def-84fd-f366872a2ee0@intel.com>
Date: Fri, 20 Jun 2025 08:35:14 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
 Andy Lutomirski <luto@...nel.org>, Thomas Gleixner <tglx@...utronix.de>,
 Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
 Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
 "H. Peter Anvin" <hpa@...or.com>, Peter Zijlstra <peterz@...radead.org>,
 Ard Biesheuvel <ardb@...nel.org>, "Paul E. McKenney" <paulmck@...nel.org>,
 Josh Poimboeuf <jpoimboe@...nel.org>,
 Xiongwei Song <xiongwei.song@...driver.com>, Xin Li <xin3.li@...el.com>,
 "Mike Rapoport (IBM)" <rppt@...nel.org>,
 Brijesh Singh <brijesh.singh@....com>, Michael Roth <michael.roth@....com>,
 Tony Luck <tony.luck@...el.com>, Alexey Kardashevskiy <aik@....com>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jonathan Corbet <corbet@....net>, Sohil Mehta <sohil.mehta@...el.com>,
 Ingo Molnar <mingo@...nel.org>,
 Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
 Daniel Sneddon <daniel.sneddon@...ux.intel.com>,
 Kai Huang <kai.huang@...el.com>, Sandipan Das <sandipan.das@....com>,
 Breno Leitao <leitao@...ian.org>, Rick Edgecombe
 <rick.p.edgecombe@...el.com>, Alexei Starovoitov <ast@...nel.org>,
 Hou Tao <houtao1@...wei.com>, Juergen Gross <jgross@...e.com>,
 Vegard Nossum <vegard.nossum@...cle.com>, Kees Cook <kees@...nel.org>,
 Eric Biggers <ebiggers@...gle.com>, Jason Gunthorpe <jgg@...pe.ca>,
 "Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Luis Chamberlain <mcgrof@...nel.org>, Yuntao Wang <ytcoode@...il.com>,
 Rasmus Villemoes <linux@...musvillemoes.dk>,
 Christophe Leroy <christophe.leroy@...roup.eu>, Tejun Heo <tj@...nel.org>,
 Changbin Du <changbin.du@...wei.com>,
 Huang Shijie <shijie@...amperecomputing.com>,
 Geert Uytterhoeven <geert+renesas@...der.be>,
 Namhyung Kim <namhyung@...nel.org>,
 Arnaldo Carvalho de Melo <acme@...hat.com>, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCHv6 04/16] x86/efi: Move runtime service initialization to
 arch/x86

On 6/20/25 06:53, Kirill A. Shutemov wrote:
> From: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> 
> The EFI call in start_kernel() is guarded by #ifdef CONFIG_X86. Move
> the thing to the arch_cpu_finalize_init() path on x86 and get rid of
> the #ifdef in start_kernel().

What does this have to do with LASS?

Is there any reason not to just pull this in to tip now as a cleanup? It
looks good regardless of what it does to LASS.