[PATCH 4/6] x86: Raise vsyscall priority on hotplug notifier chain

[Sheng Yang]

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 linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/