KVM guest: switch to apic_set_eoi_write, apic_write

Use apic_set_eoi_write, apic_write to avoid meedling in core apic
driver data structures directly.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 3 insertions, 10 deletions

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 299cf147092..c1d61ee4b4f 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -299,7 +299,7 @@ static void kvm_guest_apic_eoi_write(u32 reg, u32 val)
          */
         if (__test_and_clear_bit(KVM_PV_EOI_BIT, &__get_cpu_var(kvm_apic_eoi)))
                 return;
-        apic->write(APIC_EOI, APIC_EOI_ACK);
+        apic_write(APIC_EOI, APIC_EOI_ACK);
 }
 
 void __cpuinit kvm_guest_cpu_init(void)
@@ -466,15 +466,8 @@ void __init kvm_guest_init(void)
                 pv_time_ops.steal_clock = kvm_steal_clock;
         }
 
-        if (kvm_para_has_feature(KVM_FEATURE_PV_EOI)) {
-                struct apic **drv;
-
-                for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
-                        /* Should happen once for each apic */
-                        WARN_ON((*drv)->eoi_write == kvm_guest_apic_eoi_write);
-                        (*drv)->eoi_write = kvm_guest_apic_eoi_write;
-                }
-        }
+        if (kvm_para_has_feature(KVM_FEATURE_PV_EOI))
+                apic_set_eoi_write(kvm_guest_apic_eoi_write);
 
 #ifdef CONFIG_SMP
         smp_ops.smp_prepare_boot_cpu = kvm_smp_prepare_boot_cpu;