Messages in this thread | | | Date | Thu, 08 Nov 2007 16:19:49 -0800 | From | Jeremy Fitzhardinge <> | Subject | Re: Some interesting observations when trying to optimize vmstat handling |
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Andi Kleen wrote: > The only problem is that there might be some code who relies on > restore_flags() restoring other flags that IF, but at least for interrupts > and local_irq_save/restore it should be fine to change. >
I don't think so. We don't bother to save/restore the other flags in Xen paravirt and it doesn't seem to cause a problem. The semantics really are specific to the state of the interrupt flag.
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