[PATCH v4 09/47] x86/acrn: Mark TSC frequency as known when using ACRN for calibration

[Sean Christopherson <seanjc@xxxxxxxxxx>]

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@xxxxxxxxxx>
---
 arch/x86/kernel/cpu/acrn.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/acrn.c b/arch/x86/kernel/cpu/acrn.c
index ad8f2da8003b..0303fe6a2efa 100644
--- a/arch/x86/kernel/cpu/acrn.c
+++ b/arch/x86/kernel/cpu/acrn.c
@@ -33,6 +33,8 @@ static void __init acrn_init_platform(void)
 {
        /* Install system interrupt handler for ACRN hypervisor callback */
        sysvec_install(HYPERVISOR_CALLBACK_VECTOR, sysvec_acrn_hv_callback);
+
+       setup_force_cpu_cap(X86_FEATURE_TSC_KNOWN_FREQ);
 }
 
 static bool acrn_x2apic_available(void)
-- 
2.54.0.823.g6e5bcc1fc9-goog