linux-kernel - Re: [PATCHv3 2/4] x86/64/mm: Make SPARSEMEM

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Message-ID: <6228b588-790a-4bbd-87e6-1bd69f3703c9@intel.com>
Date: Fri, 16 May 2025 08:08:25 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Ingo Molnar <mingo@...nel.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
 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>,
 Jonathan Corbet <corbet@....net>, Andy Lutomirski <luto@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>, Ard Biesheuvel <ardb@...nel.org>,
 Jan Kiszka <jan.kiszka@...mens.com>, Kieran Bingham <kbingham@...nel.org>,
 Michael Roth <michael.roth@....com>,
 Rick Edgecombe <rick.p.edgecombe@...el.com>,
 Brijesh Singh <brijesh.singh@....com>, Sandipan Das <sandipan.das@....com>,
 Juergen Gross <jgross@...e.com>, Tom Lendacky <thomas.lendacky@....com>,
 linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
 linux-efi@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCHv3 2/4] x86/64/mm: Make SPARSEMEM_VMEMMAP the only memory
 model

On 5/16/25 07:59, Dave Hansen wrote:
> The only option would be to make them static when using non-vmemmap
> sparsemem. But that's new-ish, and probably won't get any testing.

Something like this. But I don't particularly like it.
View attachment "static-sparsemem-0.patch" of type "text/x-patch" (663 bytes)