We need to set the HYPERVISOR flag to let the kernel know we're running
under a hypervisor.
This makes the kernel enable all sorts of para-virtualization options
such as kvm-clock.
Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
---
tools/kvm/x86/cpuid.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/tools/kvm/x86/cpuid.c b/tools/kvm/x86/cpuid.c
index 75f3b4d..6a20dd0 100644
--- a/tools/kvm/x86/cpuid.c
+++ b/tools/kvm/x86/cpuid.c
@@ -21,6 +21,10 @@ static void filter_cpuid(struct kvm_cpuid2 *kvm_cpuid)
struct kvm_cpuid_entry2 *entry = &kvm_cpuid->entries[i];
switch (entry->function) {
+ case 1:
+ if (entry->index == 0)
+ entry->ecx |= (1<<31);
+ break;
case 6:
/* Clear presence of IA32_ENERGY_PERF_BIAS */
entry->ecx = entry->ecx & ~(1 << 3);
--
1.7.8.6
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