linux-kernel - Re: [PATCH v5 3/4] x86/mm/pat: Convert pmd code to use ptdescs

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Message-ID: <29599d4e-c2c7-4f40-a444-28dcc3768ce4@intel.com>
Date: Wed, 11 Feb 2026 12:07:05 -0800
From: Dave Hansen <dave.hansen@...el.com>
To: "Vishal Moola (Oracle)" <vishal.moola@...il.com>,
 linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org,
 "Mike Rapoport (Microsoft)" <rppt@...nel.org>
Cc: akpm@...ux-foundation.org, "Matthew Wilcox (Oracle)"
 <willy@...radead.org>, Dave Hansen <dave.hansen@...ux.intel.com>,
 Andy Lutomirski <luto@...nel.org>, Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v5 3/4] x86/mm/pat: Convert pmd code to use ptdescs

On 2/11/26 11:52, Vishal Moola (Oracle) wrote:
> Also, rename *_pmd_page() functions to *_pmd(). Rename them now to avoid
> any confusion later. Eventually these allocations will be backed by a
> ptdesc not a page, but that's not important to callers either.

So, pages are still a thing, whether the API says 'struct page' or not.
The hardware kinda uses pages for page tables. ;)

Could we please leave out the unnecessary churn from the renames?