v4.19.13 snapshot.
diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
new file mode 100644
index 0000000..6502feb
--- /dev/null
+++ b/include/kvm/arm_arch_timer.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2012 ARM Ltd.
+ * Author: Marc Zyngier <marc.zyngier@arm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __ASM_ARM_KVM_ARCH_TIMER_H
+#define __ASM_ARM_KVM_ARCH_TIMER_H
+
+#include <linux/clocksource.h>
+#include <linux/hrtimer.h>
+#include <linux/workqueue.h>
+
+struct arch_timer_context {
+ /* Registers: control register, timer value */
+ u32 cnt_ctl;
+ u64 cnt_cval;
+
+ /* Timer IRQ */
+ struct kvm_irq_level irq;
+
+ /*
+ * We have multiple paths which can save/restore the timer state
+ * onto the hardware, so we need some way of keeping track of
+ * where the latest state is.
+ *
+ * loaded == true: State is loaded on the hardware registers.
+ * loaded == false: State is stored in memory.
+ */
+ bool loaded;
+
+ /* Virtual offset */
+ u64 cntvoff;
+};
+
+struct arch_timer_cpu {
+ struct arch_timer_context vtimer;
+ struct arch_timer_context ptimer;
+
+ /* Background timer used when the guest is not running */
+ struct hrtimer bg_timer;
+
+ /* Work queued with the above timer expires */
+ struct work_struct expired;
+
+ /* Physical timer emulation */
+ struct hrtimer phys_timer;
+
+ /* Is the timer enabled */
+ bool enabled;
+};
+
+int kvm_timer_hyp_init(bool);
+int kvm_timer_enable(struct kvm_vcpu *vcpu);
+int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
+void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);
+void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu);
+bool kvm_timer_should_notify_user(struct kvm_vcpu *vcpu);
+void kvm_timer_update_run(struct kvm_vcpu *vcpu);
+void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu);
+
+u64 kvm_arm_timer_get_reg(struct kvm_vcpu *, u64 regid);
+int kvm_arm_timer_set_reg(struct kvm_vcpu *, u64 regid, u64 value);
+
+int kvm_arm_timer_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
+int kvm_arm_timer_get_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
+int kvm_arm_timer_has_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
+
+bool kvm_timer_is_pending(struct kvm_vcpu *vcpu);
+
+void kvm_timer_schedule(struct kvm_vcpu *vcpu);
+void kvm_timer_unschedule(struct kvm_vcpu *vcpu);
+
+u64 kvm_phys_timer_read(void);
+
+void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu);
+void kvm_timer_vcpu_put(struct kvm_vcpu *vcpu);
+
+void kvm_timer_init_vhe(void);
+
+bool kvm_arch_timer_get_input_level(int vintid);
+
+#define vcpu_vtimer(v) (&(v)->arch.timer_cpu.vtimer)
+#define vcpu_ptimer(v) (&(v)->arch.timer_cpu.ptimer)
+
+#endif