KVM need vsyscall_init() to initialize MSR_TSC_AUX before it read the value. Per Avi's suggestion, this patch raised vsyscall priority on hotplug notifier chain, to 30. CC: Ingo Molnar <mingo@xxxxxxx> CC: linux-kernel@xxxxxxxxxxxxxxx Signed-off-by: Sheng Yang <sheng@xxxxxxxxxxxxxxx> --- arch/x86/kernel/vsyscall_64.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c index 8cb4974..971bbc9 100644 --- a/arch/x86/kernel/vsyscall_64.c +++ b/arch/x86/kernel/vsyscall_64.c @@ -300,7 +300,8 @@ static int __init vsyscall_init(void) register_sysctl_table(kernel_root_table2); #endif on_each_cpu(cpu_vsyscall_init, NULL, 1); - hotcpu_notifier(cpu_vsyscall_notifier, 0); + /* notifier priority > KVM */ + hotcpu_notifier(cpu_vsyscall_notifier, 30); return 0; } -- 1.5.4.5 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
