linux-kernel - Re: [PATCH RFC v2] rcu: Add a minimum time for marking boot as completed

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Message-ID: <Y/u2xK8FHwKMsJNh@lothringen>
Date:   Sun, 26 Feb 2023 20:45:08 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     "Joel Fernandes (Google)" <joel@...lfernandes.org>
Cc:     linux-kernel@...r.kernel.org,
        Lai Jiangshan <jiangshanlai@...il.com>,
        linux-doc@...r.kernel.org, "Paul E. McKenney" <paulmck@...nel.org>,
        rcu@...r.kernel.org
Subject: Re: [PATCH RFC v2] rcu: Add a minimum time for marking boot as
 completed

On Sat, Feb 25, 2023 at 03:34:21AM +0000, Joel Fernandes (Google) wrote:
> On many systems, a great deal of boot happens after the kernel thinks the boot
> has completed. It is difficult to determine if the system has really booted
> from the kernel side.

Is this only about kernel booting? What makes it hard to determine if the
system has really booted?

Thanks.