* [PATCH 4/6] x86: Raise vsyscall priority on hotplug notifier chain
[not found] <1261126127-9603-1-git-send-email-sheng@linux.intel.com>
@ 2009-12-18 8:48 ` Sheng Yang
0 siblings, 0 replies; only message in thread
From: Sheng Yang @ 2009-12-18 8:48 UTC (permalink / raw)
To: Avi Kivity, Marcelo Tosatti; +Cc: kvm, Sheng Yang, Ingo Molnar, linux-kernel
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@elte.hu>
CC: linux-kernel@vger.kernel.org
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
---
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
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