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| author | Ingo Molnar <mingo@kernel.org> | 2013-10-29 11:23:32 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-10-29 11:23:32 +0100 |
| commit | aac898548d04c7bff179b79f805874b0d6f87571 (patch) | |
| tree | e8de975fd5de6c95bf4329861a872dbcfe0c7ead /arch/x86/kernel/kvm.c | |
| parent | 2f5e98802350627ad6f2e3cee4d177059fc0c2f2 (diff) | |
| parent | cd65718712469ad844467250e8fad20a5838baae (diff) | |
| download | linux-aac898548d04c7bff179b79f805874b0d6f87571.tar.gz linux-aac898548d04c7bff179b79f805874b0d6f87571.tar.bz2 linux-aac898548d04c7bff179b79f805874b0d6f87571.zip | |
Merge branch 'perf/urgent' into perf/core
Conflicts:
tools/perf/builtin-record.c
tools/perf/builtin-top.c
tools/perf/util/hist.h
Diffstat (limited to 'arch/x86/kernel/kvm.c')
| -rw-r--r-- | arch/x86/kernel/kvm.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 697b93af02dd..a0e2a8a80c94 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -775,11 +775,22 @@ void __init kvm_spinlock_init(void) if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT)) return; - printk(KERN_INFO "KVM setup paravirtual spinlock\n"); + pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(kvm_lock_spinning); + pv_lock_ops.unlock_kick = kvm_unlock_kick; +} + +static __init int kvm_spinlock_init_jump(void) +{ + if (!kvm_para_available()) + return 0; + if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT)) + return 0; static_key_slow_inc(¶virt_ticketlocks_enabled); + printk(KERN_INFO "KVM setup paravirtual spinlock\n"); - pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(kvm_lock_spinning); - pv_lock_ops.unlock_kick = kvm_unlock_kick; + return 0; } +early_initcall(kvm_spinlock_init_jump); + #endif /* CONFIG_PARAVIRT_SPINLOCKS */ |