Re: [PATCH] x86/mm: Don't flush the TLB on #WP pmd fixups

2012-11-21 Thread Mel Gorman
On Tue, Nov 20, 2012 at 01:31:56PM +0100, Ingo Molnar wrote: > > * Ingo Molnar wrote: > > > * Ingo Molnar wrote: > > > > > numa/core profile: > > > > > > 95.66% perf-1201.map [.] 0x7fe4ad1c8fc7 > > > 1.70% libjvm.so [.] 0x00381581

Re: [PATCH] x86/mm: Don't flush the TLB on #WP pmd fixups

2012-11-20 Thread David Rientjes
On Tue, 20 Nov 2012, Ingo Molnar wrote: > Subject: x86/mm: Don't flush the TLB on #WP pmd fixups > From: Ingo Molnar > Date: Tue Nov 20 14:46:34 CET 2012 > > If we have a write protection #PF and fix up the pmd then the > hugetlb code [the only user of pmdp_set_access_flags], in its > do_huge_pm

Re: [PATCH] x86/mm: Don't flush the TLB on #WP pmd fixups

2012-11-20 Thread Ingo Molnar
* Ingo Molnar wrote: > * Ingo Molnar wrote: > > > numa/core profile: > > > > 95.66% perf-1201.map [.] 0x7fe4ad1c8fc7 > > 1.70% libjvm.so [.] 0x00381581 > > 0.59% [vdso][.] 0x0607