Re: [RFC/PATCH] i386: handle all exceptions with interrupts off initially

From: H. Peter Anvin
Date: Wed Sep 10 2008 - 01:59:50 EST

Ingo Molnar wrote:

the entry paths here are really short (we enable irqs almost immediately) so it's a non-issue in terms of worst-case latencies.

In other words, it's not something we want to do "just because", but to the extent that it provides real benefit, it makes sense.

this is historically pretty fragile code so bringing the 32-bit and 64-bit variants more in line sounds like a good reason to me. For example we had various long-living irq state annotation bugs (the combination of kprobes and lockdep, etc.) that remained unfixed partly due to this assymetry.

Agreed completely. I certainly didn't mean to come across sounding negative.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at