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 headers for it. I am keeping it separate 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@xxxxxxxxxx>
CC: Rik van Riel <riel@xxxxxxxxxx>
CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
CC: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CC: Avi Kivity <avi@xxxxxxxxxx>
---
arch/x86/include/asm/kvm_para.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 4df93cf..1ca49d8 100644
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
@@ -46,8 +46,13 @@ struct kvm_memory_area {
__u8 pad[3];
};
+struct kvm_steal_time {
+ __u64 steal;
+};
+
#define KVM_AREA_WALLCLOCK 1
#define KVM_AREA_SYSTIME 2
+#define KVM_AREA_STEAL_TIME 3
#define KVM_MAX_MMU_OP_BATCH 32
--
1.7.2.3
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