linux-kernel - Re: [UPDATED PATCH 21/27] sparc32, smpboot: Use generic SMP booting infrastructure

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Date:	Fri, 01 Jun 2012 18:53:41 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	srivatsa.bhat@...ux.vnet.ibm.com
Cc:	sam@...nborg.org, tglx@...utronix.de, peterz@...radead.org,
	paulmck@...ux.vnet.ibm.com, rusty@...tcorp.com.au,
	mingo@...nel.org, yong.zhang0@...il.com, akpm@...ux-foundation.org,
	vatsa@...ux.vnet.ibm.com, rjw@...k.pl, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, nikunj@...ux.vnet.ibm.com,
	vapier@...too.org, konrad@...sler.com, tkhai@...dex.ru,
	sparclinux@...r.kernel.org
Subject: Re: [UPDATED PATCH 21/27] sparc32, smpboot: Use generic SMP
 booting infrastructure

From: "Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
Date: Sat, 02 Jun 2012 04:17:47 +0530

> 
> Convert sparc32 to use the generic framework to boot secondary CPUs.
> 
> Notes:
> While removing the call to cpu_idle(), we can also remove the call to
> cpu_panic() because we are calling BUG() in the generic code anyway.
> 
> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@...ux.vnet.ibm.com>

Almost there, but not quite yet.

You can't get rid of the cpu_panic invocations, those have to be there
after the *_callin calls to catch if they accidently return.
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