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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-11-06 12:26:18 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-04-24 21:45:13 -0400 |
| commit | b8900a36898ebc6a1922a8f92406ec2dac856709 (patch) | |
| tree | 111ed52c9fb15e7cf63c05d06a0cdecf017a5aaf /arch/x86/kvm/x86.c | |
| parent | f4b9adb6a47b2a9631ce4eb23848267a63b7bcb7 (diff) | |
| download | linux-rt-b8900a36898ebc6a1922a8f92406ec2dac856709.tar.gz | |
x86-kvm-require-const-tsc-for-rt.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 92af83d79c97..e1b7b17b8162 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5493,6 +5493,13 @@ int kvm_arch_init(void *opaque) goto out; } +#ifdef CONFIG_PREEMPT_RT_FULL + if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) { + printk(KERN_ERR "RT requires X86_FEATURE_CONSTANT_TSC\n"); + return -EOPNOTSUPP; + } +#endif + r = kvm_mmu_module_init(); if (r) goto out_free_percpu; |