[PATCH v3 09/16] kvm: x86: hyperv: Use APICv deactivate request interface

[Suthikulpanit, Suravee]

Since disabling APICv has to be done for all vcpus on AMD-based system,
adopt the newly introduced kvm_make_apicv_deactivate_request() interface.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
---
 arch/x86/kvm/hyperv.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index c10a8b1..1d011b4 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -772,9 +772,17 @@ int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages)
 
 	/*
 	 * Hyper-V SynIC auto EOI SINT's are
-	 * not compatible with APICV, so deactivate APICV
+	 * not compatible with APICV, so request
+	 * to deactivate APICV permanently.
+	 *
+	 * Since this requires updating
+	 * APIC_ACCESS_PAGE_PRIVATE_MEMSLOT,
+	 * also take srcu lock.
 	 */
-	kvm_vcpu_deactivate_apicv(vcpu);
+	vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
+	kvm_make_apicv_deactivate_request(vcpu, true);
+	srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
+
 	synic->active = true;
 	synic->dont_zero_synic_pages = dont_zero_synic_pages;
 	return 0;
-- 
1.8.3.1