[PATCH v3 3/3] KVM: x86: Consolidate invocations of kvm_x86_ops.load_eoi_exitmap()

[Sean Christopherson]

Rework KVM's handling of EOI exit bitmap updates to consolidate the calls
to vendor code so that it's easier to see that the Hyper-V path is doing
the exact same thing, just with extra input to account for the SynIC
vectors.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
 arch/x86/kvm/x86.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0028d57e964a..483dac323c8e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8047,6 +8047,9 @@ EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_inc_or_dec_irq_window_inhibit);
 
 static void vcpu_scan_ioapic(struct kvm_vcpu *vcpu)
 {
+	unsigned long *eoi_exit_bitmap = vcpu->arch.ioapic_handled_vectors;
+	DECLARE_BITMAP(__eoi_exit_bitmap, 256) __maybe_unused;
+
 	if (!kvm_apic_present(vcpu))
 		return;
 
@@ -8064,17 +8067,14 @@ static void vcpu_scan_ioapic(struct kvm_vcpu *vcpu)
 
 #ifdef CONFIG_KVM_HYPERV
 	if (to_hv_vcpu(vcpu)) {
-		u64 eoi_exit_bitmap[4];
-
-		bitmap_or((ulong *)eoi_exit_bitmap,
+		bitmap_or(__eoi_exit_bitmap,
 			  vcpu->arch.ioapic_handled_vectors,
 			  to_hv_synic(vcpu)->vec_bitmap, 256);
-		kvm_x86_call(load_eoi_exitmap)(vcpu, eoi_exit_bitmap);
-		return;
+
+		eoi_exit_bitmap = __eoi_exit_bitmap;
 	}
 #endif
-	kvm_x86_call(load_eoi_exitmap)(
-		vcpu, (u64 *)vcpu->arch.ioapic_handled_vectors);
+	kvm_x86_call(load_eoi_exitmap)(vcpu, (u64 *)eoi_exit_bitmap);
 }
 
 void kvm_arch_guest_memory_reclaimed(struct kvm *kvm)
-- 
2.56.0.307.g5fe7bd680c-goog