KVM: PPC: Book3S HV: Use the hardware referenced bit for kvm_age_hva
authorPaul Mackerras <paulus@samba.org>
Thu, 15 Dec 2011 02:02:47 +0000 (02:02 +0000)
committerAvi Kivity <avi@redhat.com>
Mon, 5 Mar 2012 12:52:39 +0000 (14:52 +0200)
commit55514893739d28f095f19b012133eea4cb4a9390
tree53133098473395a8a4ff1f00414137c2481a5fd0
parentbad3b5075eeb18cb1641b4171618add638bc0fa7
KVM: PPC: Book3S HV: Use the hardware referenced bit for kvm_age_hva

This uses the host view of the hardware R (referenced) bit to speed
up kvm_age_hva() and kvm_test_age_hva().  Instead of removing all
the relevant HPTEs in kvm_age_hva(), we now just reset their R bits
if set.  Also, kvm_test_age_hva() now scans the relevant HPTEs to
see if any of them have R set.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
arch/powerpc/include/asm/kvm_book3s.h
arch/powerpc/kvm/book3s_64_mmu_hv.c
arch/powerpc/kvm/book3s_hv_rm_mmu.c