Thread (6 messages) 6 messages, 2 authors, 2007-02-26

Re: PARAVIRT_SAVE_FLAGS_IRQ_DISABLE composite callsite

From: Rusty Russell <hidden>
Date: 2007-02-25 22:07:07

On Sun, 2007-02-25 at 01:40 -0800, Jeremy Fitzhardinge wrote:
What was the point of this again?  Was it that these two operations are
used so commonly together that its worth having a special type for them,
or is there some correctness issue here?

It seems to me that having it adds a fair amount of fiddley complexity,
and it doesn't gain very much because patching will make each operation
individually fairly efficient.
Yes, the combo was *so* common we went for one patch site rather than
two.

Rusty.
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