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Message-ID: <94b05905-df3a-4534-a28c-fe9e3030fc4a@linaro.org>
Date: Tue, 13 Jun 2023 01:49:23 +0200
From: Philippe Mathieu-Daudé <philmd@...aro.org>
To: Thomas Gleixner <tglx@...utronix.de>,
LKML <linux-kernel@...r.kernel.org>
Cc: x86@...nel.org, David Woodhouse <dwmw2@...radead.org>,
Andrew Cooper <andrew.cooper3@...rix.com>,
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Ross Philipson <ross.philipson@...cle.com>
Subject: Re: [patch V4 10/37] x86/smpboot: Get rid of cpu_init_secondary()
On 12/5/23 23:07, Thomas Gleixner wrote:
> From: Thomas Gleixner <tglx@...utronix.de>
>
> The synchronization of the AP with the control CPU is a SMP boot problem
> and has nothing to do with cpu_init().
>
> Open code cpu_init_secondary() in start_secondary() and move
> wait_for_master_cpu() into the SMP boot code.
>
> No functional change.
>
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Tested-by: Michael Kelley <mikelley@...rosoft.com>
> ---
> arch/x86/include/asm/processor.h | 1 -
> arch/x86/kernel/cpu/common.c | 27 ---------------------------
> arch/x86/kernel/smpboot.c | 24 +++++++++++++++++++-----
> 3 files changed, 19 insertions(+), 33 deletions(-)
Reviewed-by: Philippe Mathieu-Daudé <philmd@...aro.org>
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