x86/jailhouse: Set X86_FEATURE_TSC_KNOWN_FREQ

Otherwise, Linux will not recognize precalibrated_tsc_khz and disable
the tsc as clocksource.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jailhouse <jailhouse-dev@googlegroups.com>
Link: https://lkml.kernel.org/r/975fbfc9-2a64-cc56-40d5-164992ec3916@siemens.com

diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c
index 7ade152133c7ea25bad7f516c9bf95971f07dc6e..2b7ebbe9043d8b7a2fd8ee486ad4ddfc69afa1e2 100644 (file)
--- a/arch/x86/kernel/jailhouse.c
+++ b/arch/x86/kernel/jailhouse.c
@@ -176,6 +176,7 @@ static void __init jailhouse_init_platform(void)
        pr_debug("Jailhouse: PM-Timer IO Port: %#x\n", pmtmr_ioport);
 
        precalibrated_tsc_khz = setup_data.tsc_khz;
+       setup_force_cpu_cap(X86_FEATURE_TSC_KNOWN_FREQ);
 
        pci_probe = 0;