Messages in this thread | | | Date | Thu, 28 Feb 2013 19:05:40 -0500 | From | Josh Boyer <> | Subject | Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal |
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On Fri, Mar 01, 2013 at 12:37:20AM +0100, Borislav Petkov wrote: > On Thu, Feb 28, 2013 at 05:55:49PM -0500, Boris Ostrovsky wrote: > > Invoking arch_flush_lazy_mmu_mode() results in calls to > > preempt_enable()/disable() which may have performance impact. > > > > Since lazy MMU is not used on bare metal we can patch away > > arch_flush_lazy_mmu_mode() so that it is never called in such > > environment. > > > > Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> > > Looks straight-forward enough to me. > > Acked-by: Borislav Petkov <bp@suse.de>
I'll try to get someone to test this tomorrow.
josh
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