[PATCH v6 13/51] x86/acrn: Mark TSC frequency as known when using ACRN for calibration
Sean Christopherson <[email protected]>
| Newsgroups | org.xenproject.lists.xen-devel,dev.linux.lists.linux-coco,dev.linux.lists.virtualization,org.kernel.vger.kvm,org.kernel.vger.linux-hyperv,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
Mark the TSC frequency as known when using ACRN's PV CPUID information.
Per commit 81a71f51b89e ("x86/acrn: Set up timekeeping") and common sense,
the TSC freq is explicitly provided by the hypervisor.
Signed-off-by: Sean Christopherson <[email protected]>
---
arch/x86/kernel/cpu/acrn.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/cpu/acrn.c b/arch/x86/kernel/cpu/acrn.c
index dc71a6fdd461..3818f6ae0629 100644
--- a/arch/x86/kernel/cpu/acrn.c
+++ b/arch/x86/kernel/cpu/acrn.c
@@ -40,6 +40,7 @@ static void __init acrn_init_platform(void)
if (acrn_tsc_khz_cpuid) {
x86_init.hyper.get_tsc_khz = acrn_get_tsc_khz;
x86_init.hyper.get_cpu_khz = acrn_get_tsc_khz;
+ setup_force_cpu_cap(X86_FEATURE_TSC_KNOWN_FREQ);
}
}
--
2.55.0.679.g6767b8d81c-goog