40 	struct gfn_to_pfn_cache *gpc = &kvm->arch.xen.shinfo_cache;  in kvm_xen_shared_info_init()  local
48 	read_lock_irq(&gpc->lock);  in kvm_xen_shared_info_init()
49 	while (!kvm_gpc_check(gpc, PAGE_SIZE)) {  in kvm_xen_shared_info_init()
50 		read_unlock_irq(&gpc->lock);  in kvm_xen_shared_info_init()
52 		ret = kvm_gpc_refresh(gpc, PAGE_SIZE);  in kvm_xen_shared_info_init()
56 		read_lock_irq(&gpc->lock);  in kvm_xen_shared_info_init()
76 		struct shared_info *shinfo = gpc->khva;  in kvm_xen_shared_info_init()
83 		struct compat_shared_info *shinfo = gpc->khva;  in kvm_xen_shared_info_init()
99 	read_unlock_irq(&gpc->lock);  in kvm_xen_shared_info_init()
372 	 * Attempt to obtain the GPC lock on *both* (if there are two)  in kvm_xen_update_runstate_guest()
400 		 * struct in the guest (via the GPC).  in kvm_xen_update_runstate_guest()
441 			 * 64-bit mode, the second GPC won't have been set up.  in kvm_xen_update_runstate_guest()
471 		 * via one GPC or the other.  in kvm_xen_update_runstate_guest()
594 	struct gfn_to_pfn_cache *gpc = &v->arch.xen.vcpu_info_cache;  in kvm_xen_inject_pending_events()  local
605 	read_lock_irqsave(&gpc->lock, flags);  in kvm_xen_inject_pending_events()
606 	while (!kvm_gpc_check(gpc, sizeof(struct vcpu_info))) {  in kvm_xen_inject_pending_events()
607 		read_unlock_irqrestore(&gpc->lock, flags);  in kvm_xen_inject_pending_events()
609 		if (kvm_gpc_refresh(gpc, sizeof(struct vcpu_info)))  in kvm_xen_inject_pending_events()
612 		read_lock_irqsave(&gpc->lock, flags);  in kvm_xen_inject_pending_events()
615 	/* Now gpc->khva is a valid kernel address for the vcpu_info */  in kvm_xen_inject_pending_events()
617 		struct vcpu_info *vi = gpc->khva;  in kvm_xen_inject_pending_events()
629 		struct compat_vcpu_info *vi = gpc->khva;  in kvm_xen_inject_pending_events()
641 	kvm_gpc_mark_dirty_in_slot(gpc);  in kvm_xen_inject_pending_events()
642 	read_unlock_irqrestore(&gpc->lock, flags);  in kvm_xen_inject_pending_events()
651 	struct gfn_to_pfn_cache *gpc = &v->arch.xen.vcpu_info_cache;  in __kvm_xen_has_interrupt()  local
668 	read_lock_irqsave(&gpc->lock, flags);  in __kvm_xen_has_interrupt()
669 	while (!kvm_gpc_check(gpc, sizeof(struct vcpu_info))) {  in __kvm_xen_has_interrupt()
670 		read_unlock_irqrestore(&gpc->lock, flags);  in __kvm_xen_has_interrupt()
683 		if (kvm_gpc_refresh(gpc, sizeof(struct vcpu_info))) {  in __kvm_xen_has_interrupt()
690 		read_lock_irqsave(&gpc->lock, flags);  in __kvm_xen_has_interrupt()
693 	rc = ((struct vcpu_info *)gpc->khva)->evtchn_upcall_pending;  in __kvm_xen_has_interrupt()
694 	read_unlock_irqrestore(&gpc->lock, flags);  in __kvm_xen_has_interrupt()
945 		/* Either map the second page, or deactivate the second GPC */  in kvm_xen_vcpu_set_attr()
1383 	struct gfn_to_pfn_cache *gpc = &kvm->arch.xen.shinfo_cache;  in wait_pending_event()  local
1390 	read_lock_irqsave(&gpc->lock, flags);  in wait_pending_event()
1391 	if (!kvm_gpc_check(gpc, PAGE_SIZE))  in wait_pending_event()
1396 		struct shared_info *shinfo = gpc->khva;  in wait_pending_event()
1399 		struct compat_shared_info *shinfo = gpc->khva;  in wait_pending_event()
1411 	read_unlock_irqrestore(&gpc->lock, flags);  in wait_pending_event()
1740 	struct gfn_to_pfn_cache *gpc = &kvm->arch.xen.shinfo_cache;  in kvm_xen_set_evtchn_fast()  local
1765 	read_lock_irqsave(&gpc->lock, flags);  in kvm_xen_set_evtchn_fast()
1766 	if (!kvm_gpc_check(gpc, PAGE_SIZE))  in kvm_xen_set_evtchn_fast()
1770 		struct shared_info *shinfo = gpc->khva;  in kvm_xen_set_evtchn_fast()
1775 		struct compat_shared_info *shinfo = gpc->khva;  in kvm_xen_set_evtchn_fast()
1796 		read_unlock_irqrestore(&gpc->lock, flags);  in kvm_xen_set_evtchn_fast()
1797 		gpc = &vcpu->arch.xen.vcpu_info_cache;  in kvm_xen_set_evtchn_fast()
1799 		read_lock_irqsave(&gpc->lock, flags);  in kvm_xen_set_evtchn_fast()
1800 		if (!kvm_gpc_check(gpc, sizeof(struct vcpu_info))) {  in kvm_xen_set_evtchn_fast()
1811 			struct vcpu_info *vcpu_info = gpc->khva;  in kvm_xen_set_evtchn_fast()
1817 			struct compat_vcpu_info *vcpu_info = gpc->khva;  in kvm_xen_set_evtchn_fast()
1833 	read_unlock_irqrestore(&gpc->lock, flags);  in kvm_xen_set_evtchn_fast()
1880 		struct gfn_to_pfn_cache *gpc = &kvm->arch.xen.shinfo_cache;  in kvm_xen_set_evtchn()  local
1888 		rc = kvm_gpc_refresh(gpc, PAGE_SIZE);  in kvm_xen_set_evtchn()