From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Fri, 19 Jan 2018 10:06:17 +0000 (+0100)
Subject: x86/jailhouse: Set X86_FEATURE_TSC_KNOWN_FREQ
X-Git-Tag: for-linus-20180210~82^2~1
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=11f19ec025dd421c54978c69e42d86758fa310de;p=linux-block.git

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 7ade152133c7..2b7ebbe9043d 100644
--- 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;