linux-kernel - Re: [PATCH v3 2/2] vdso: Introduce vdso/page.h

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Message-Id: <140c4244-1bb2-404c-8372-1e68963eeea5@app.fastmail.com>
Date: Mon, 07 Oct 2024 11:06:47 +0000
From: "Arnd Bergmann" <arnd@...db.de>
To: "Vincenzo Frascino" <vincenzo.frascino@....com>,
 linux-kernel@...r.kernel.org, Linux-Arch <linux-arch@...r.kernel.org>,
 linux-mm@...ck.org
Cc: "Andy Lutomirski" <luto@...nel.org>,
 "Thomas Gleixner" <tglx@...utronix.de>,
 "Jason A . Donenfeld" <Jason@...c4.com>,
 "Christophe Leroy" <christophe.leroy@...roup.eu>,
 "Michael Ellerman" <mpe@...erman.id.au>,
 "Nicholas Piggin" <npiggin@...il.com>, "Naveen N Rao" <naveen@...nel.org>,
 "Ingo Molnar" <mingo@...hat.com>, "Borislav Petkov" <bp@...en8.de>,
 "Dave Hansen" <dave.hansen@...ux.intel.com>,
 "H. Peter Anvin" <hpa@...or.com>, "Theodore Ts'o" <tytso@....edu>,
 "Andrew Morton" <akpm@...ux-foundation.org>,
 "Steven Rostedt" <rostedt@...dmis.org>,
 "Masami Hiramatsu" <mhiramat@...nel.org>,
 "Mathieu Desnoyers" <mathieu.desnoyers@...icios.com>
Subject: Re: [PATCH v3 2/2] vdso: Introduce vdso/page.h

On Mon, Oct 7, 2024, at 11:01, Vincenzo Frascino wrote:
> On 04/10/2024 14:13, Arnd Bergmann wrote:

>
> It seemed harmless from the tests I did. But adding an '&&
> defined(CONFIG_32BIT)' makes it logically correct. I will add a comment as well
> in the next version.

To clarify: this has to be "!defined(CONFIG_64BIT)", as most
32-bit architectures don't define the CONFIG_32BIT symbol
(but all 64-bit ones define CONFIG_64BIT).

    Arnd