405 Critical Interrupts

Matt Porter mporter at kernel.crashing.org
Thu Nov 27 07:48:14 EST 2003

On Wed, Nov 26, 2003 at 05:28:37PM +0100, Felix Domke wrote:
> I thought about routing the CriticalInterrupt pretty much the same way
> as the HardwareInterrupt, but with disabling MSR_CE. MSR_CE would be
> enabled then even in (normal) interrupts, we probably have to add a
> __crit_cli and __save_and_crit_cli as someone already suggested.
> Does CRIT_EXCEPTION work? Is do_IRQ reentrant? Should i use the same
> interrupt processing as a normal hardware interrupt, with the exception
> that only "critical"-flagged interrupts are processed?
> Any suggestions?

You could backport the critical exception handling code from 2.6.


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