[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 1/3] xen/arm: Move p2m context save/restore in a separate function
On Thu, 2014-03-20 at 17:59 +0000, Julien Grall wrote: > > Are all of these isb()s necessary? I guess this is only code motion, > > so in any case, Acked-by: Tim Deegan <tim@xxxxxxx> (for the whole series) > > but it seems like at least the one after the VTTBR write could go? > > Thanks for the review. > > Yes, the isb() right after VTBBR can be removed. Actually I think there are probably loads of barriers in the context switch path which can be dropped in favour of a final one at the end, not all that much stuff there relies on stuff which is reloaded before it (of course we should keep barriers for cases where there is a dependence). Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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