Re: [Linux-ia64] [patch] 2.4.20 ia64_sal_mc_rendez must not lock

From: Matthew Wilcox <>
Date: 2003-03-23 00:03:57
On Sat, Mar 22, 2003 at 03:51:54PM +1100, Keith Owens wrote:
> No cpu will return from ia64_sal_mc_rendez() until all cpus have
> entered rendezvous and the monarch cpu sends the wake up ipi.  All cpus
> try to call ia64_sal_mc_rendez() but only the first one makes it, the
> others all block on the spinlock and eventually SAL hits them with an
> Why do I get the feeling that I am the first person to really use this
> code?

Maybe this is (in part) what's causing

Apparently the reason it hangs is that I leave my console at the default
9600 baud (you know, like a customer would ..) and when dumping state
it takes so long that the system assumes the CPU has hung.  Bag o' shite.

"It's not Hollywood.  War is real, war is primarily not about defeat or
victory, it is about death.  I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk
Received on Sat Mar 22 05:04:03 2003

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