Merge tag 'kvm-arm-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into next

KVM/ARM Changes for v4.15

Changes include:
 - Optimized arch timer handling for KVM/ARM
 - Improvements to the VGIC ITS code and introduction of an ITS reset
   ioctl
 - Unification of the 32-bit fault injection logic
 - More exact external abort matching logic

1 files changed, 19 insertions, 7 deletions

diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
index f0053f884b4a..01ee473517e2 100644
--- a/include/kvm/arm_arch_timer.h
+++ b/include/kvm/arm_arch_timer.h
@@ -31,8 +31,15 @@ struct arch_timer_context {
         /* Timer IRQ */
         struct kvm_irq_level            irq;
 
-        /* Active IRQ state caching */
-        bool                            active_cleared_last;
+        /*
+         * 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;
@@ -43,13 +50,13 @@ struct arch_timer_cpu {
         struct arch_timer_context       ptimer;
 
         /* Background timer used when the guest is not running */
-        struct hrtimer                  timer;
+        struct hrtimer                  bg_timer;
 
         /* Work queued with the above timer expires */
         struct work_struct              expired;
 
-        /* Background timer active */
-        bool                            armed;
+        /* Physical timer emulation */
+        struct hrtimer                  phys_timer;
 
         /* Is the timer enabled */
         bool                    enabled;
@@ -59,7 +66,6 @@ int kvm_timer_hyp_init(void);
 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_flush_hwstate(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);
@@ -72,16 +78,22 @@ 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_should_fire(struct arch_timer_context *timer_ctx);
+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);
 
 #define vcpu_vtimer(v)  (&(v)->arch.timer_cpu.vtimer)
 #define vcpu_ptimer(v)  (&(v)->arch.timer_cpu.ptimer)
+
+void enable_el1_phys_timer_access(void);
+void disable_el1_phys_timer_access(void);
+
 #endif