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x86: kvm: remove useless calls to kvm_para_available

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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>
This commit is contained in:
Paolo Bonzini 2019-07-25 12:59:40 +02:00
parent 3e7093d045
commit 57b76bdb20
1 changed files with 0 additions and 8 deletions
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8
arch/x86/kernel/kvm.c
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@ -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;