[PATCH v6 13/51] x86/acrn: Mark TSC frequency as known when using ACRN for calibration

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 <seanjc@google.com>
---
 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