x86: kvm: remove useless calls to kvm_para_available

Most code in arch/x86/kernel/kvm.c is called through x86_hyper_kvm, and thus only
runs if KVM has been detected.  There is no need to check again for the CPUID
base.

Cc: Sergio Lopez <slp@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 82caf01..edd2179 100644 (file)
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -308,9 +308,6 @@ static notrace void kvm_guest_apic_eoi_write(u32 reg, u32 val)
 
 static void kvm_guest_cpu_init(void)
 {
-       if (!kvm_para_available())
-               return;
-
        if (kvm_para_has_feature(KVM_FEATURE_ASYNC_PF) && kvmapf) {
                u64 pa = slow_virt_to_phys(this_cpu_ptr(&apf_reason));
 
@@ -625,9 +622,6 @@ static void __init kvm_guest_init(void)
 {
        int i;
 
-       if (!kvm_para_available())
-               return;
-
        paravirt_ops_setup();
        register_reboot_notifier(&kvm_pv_reboot_nb);
        for (i = 0; i < KVM_TASK_SLEEP_HASHSIZE; i++)
@@ -847,8 +841,6 @@ asm(
  */
 void __init kvm_spinlock_init(void)
 {
-       if (!kvm_para_available())
-               return;
        /* Does host kernel support KVM_FEATURE_PV_UNHALT? */
        if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT))
                return;