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SubjectRe: Some interesting observations when trying to optimize vmstat handling
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.

J
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