Messages in this thread Patch in this message | | | From | Glauber Costa <> | Subject | [PATCH 12/16] KVM-HV: KVM Steal time implementation | Date | Mon, 24 Jan 2011 13:06:33 -0500 |
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To implement steal time, we need the hypervisor to pass the guest information about how much time was spent running other processes outside the VM. This is per-vcpu, and using the kvmclock structure for that is an abuse we decided not to make.
This patch contains the hypervisor part for it. I am keeping it separate from the headers to facilitate backports to people who wants to backport the kernel part but not the hypervisor, or the other way around.
Signed-off-by: Glauber Costa <glommer@redhat.com> CC: Rik van Riel <riel@redhat.com> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> CC: Peter Zijlstra <peterz@infradead.org> CC: Avi Kivity <avi@redhat.com> --- arch/x86/kvm/x86.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 81b2f34..f129ea1 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1564,6 +1564,11 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data) goto rma_out; } + if (area_desc.type == KVM_AREA_STEAL_TIME) { + vcpu->arch.stime = area_desc.base; + goto rma_out; + } + if (vcpu->kvm->register_mem_area_uspace) { vcpu->run->exit_reason = KVM_EXIT_X86_MSR_OP; vcpu->run->msr.msr_data = data; -- 1.7.2.3
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