linux-kernel - Re: [PATCH 10/10] Use safe_apic_wait_icr_idle in __send_IPI_dest_field

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Message-Id: <200704251433.40302.ak@suse.de>
Date:	Wed, 25 Apr 2007 14:33:40 +0200
From:	Andi Kleen <ak@...e.de>
To:	Fernando Luis Vázquez Cao 
	<fernando@....ntt.co.jp>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>, horms@...ge.net.au,
	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
	vgoyal@...ibm.com, mbligh@...gle.com,
	Keith Owens <kaos@....com.au>, akpm@...ux-foundation.org
Subject: Re: [PATCH 10/10] Use safe_apic_wait_icr_idle in __send_IPI_dest_field - x86_64

On Wednesday 25 April 2007 13:51:12 Fernando Luis Vázquez Cao wrote:
> Use safe_apic_wait_icr_idle to check ICR idle bit if the vector is
> NMI_VECTOR to avoid potential hangups in the event of crash when kdump
> tries to stop the other CPUs.

But what happens then when this fails? Won't this give another hang?
Have you tested this?

I applied the patches for now.

-Andi
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