linux-kernel - [PATCH 0/3] x86: Provide a vdso for getcpu on x86-32.

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Message-Id: <20221125094216.3663444-1-bigeasy@linutronix.de>
Date:   Fri, 25 Nov 2022 10:42:13 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     Roland Mainz <roland.mainz@...bsig.org>,
        "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 0/3] x86: Provide a vdso for getcpu on x86-32.

This tiny series provides getcpu in vdso on x86-32. Due to the setup
RDTSCP now also returns CPU and node information like x86-64 does.

The usage of RDTSCP + vdso has been tested in a VM with 64bit kernel and
32bit binary and a 32bit kernel.

Sebastian