author: Thomas Gleixner <tglx@linutronix.de> 2011-11-06 12:26:18 +0100
committer: Minda Chen <minda.chen@starfivetech.com> 2023-11-06 19:24:50 +0800
commit: a62bece538b731c8710ab9e05b92c660d7b11e7f
parent: 3bdf070a42b297f08bc9f14bc0f5de2d08dcf8b7
Commit Summary:
Diffstat:
1 file changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index bfe0de3008a6..f63f6de4d466 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8433,6 +8433,14 @@ int kvm_arch_init(void *opaque)
goto out;
}
+#ifdef CONFIG_PREEMPT_RT
+ if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) {
+ pr_err("RT requires X86_FEATURE_CONSTANT_TSC\n");
+ r = -EOPNOTSUPP;
+ goto out;
+ }
+#endif
+
r = -ENOMEM;
x86_fpu_cache = kmem_cache_create("x86_fpu", sizeof(struct fpu),
__alignof__(struct fpu), SLAB_ACCOUNT,