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authorAlexander Graf <agraf@suse.de>2010-08-17 11:41:44 +0200
committerAvi Kivity <avi@redhat.com>2010-10-24 10:52:15 +0200
commitad0873763a83e7b31ba87a85ec2027dd6a9d7b55 (patch)
treeefc7e87eb5026732633f655d7270b66c7f586ec1
parentKVM: PPC: Make PV mtmsrd L=1 work with r30 and r31 (diff)
downloadlinux-ad0873763a83e7b31ba87a85ec2027dd6a9d7b55.tar.xz
linux-ad0873763a83e7b31ba87a85ec2027dd6a9d7b55.zip
KVM: PPC: Force enable nap on KVM
There are some heuristics in the PPC power management code that try to find out if the particular hardware we're running on supports proper power management or just hangs the machine when going into nap mode. Since we know that KVM is safe with nap, let's force enable it in the PV code once we're certain that we are on a KVM VM. Signed-off-by: Alexander Graf <agraf@suse.de>
-rw-r--r--arch/powerpc/kernel/kvm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c
index 48a033865410..669d989be1d6 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -582,6 +582,9 @@ static int __init kvm_guest_init(void)
if (kvm_para_has_feature(KVM_FEATURE_MAGIC_PAGE))
kvm_use_magic_page();
+ /* Enable napping */
+ powersave_nap = 1;
+
free_tmp:
kvm_free_tmp();