linux-kernel - Re: [PATCH] execmem: enforce allocation size aligment to PAGE

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Message-Id: <20250423143650.6595dcc7178351b62c31782c@linux-foundation.org>
Date: Wed, 23 Apr 2025 14:36:50 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Mike Rapoport <rppt@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] execmem: enforce allocation size aligment to PAGE_SIZE

On Wed, 23 Apr 2025 17:48:07 +0300 Mike Rapoport <rppt@...nel.org> wrote:

> Before introduction of ROX cache execmem allocation size was always
> implicitly aligned to PAGE_SIZE inside vmalloc.
> 
> However, when allocation happens from the ROX cache, this is not
> enforced.
> 
> Make sure that the allocation size is always consistently aligned to
> PAGE_SIZE.

Does this have any known runtime effect?