Re: [PATCH] 2.6.xx: sata_mv: another critical fix

[Linus Torvalds]

On Tue, 21 Mar 2006, Sander wrote:
> 
> The system just freezes. Rock solid. No sysrq, no ctrl-alt-del, nothing.

Can you enable the NMI watchdog? It could be a PCI bus lockup (in which 
case nothing will help), but if it's some interrupts-off busy loop 
(whether due to a spinlock deadlock or due to the driver just spinning) 
then nmi-watchdog should help.

Of course, that requires that you have support for local/io-APIC (ie if 
UP, please select CONFIG_X86_UP_.*APIC)

		Linus
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