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()
365 	 * Attempt to obtain the GPC lock on *both* (if there are two)  in kvm_xen_update_runstate_guest()
393 		 * struct in the guest (via the GPC).  in kvm_xen_update_runstate_guest()
434 			 * 64-bit mode, the second GPC won't have been set up.  in kvm_xen_update_runstate_guest()
464 		 * via one GPC or the other.  in kvm_xen_update_runstate_guest()
587 	struct gfn_to_pfn_cache *gpc = &v->arch.xen.vcpu_info_cache;  in kvm_xen_inject_pending_events()  local
598 	read_lock_irqsave(&gpc->lock, flags);  in kvm_xen_inject_pending_events()
599 	while (!kvm_gpc_check(gpc, sizeof(struct vcpu_info))) {  in kvm_xen_inject_pending_events()
600 		read_unlock_irqrestore(&gpc->lock, flags);  in kvm_xen_inject_pending_events()
602 		if (kvm_gpc_refresh(gpc, sizeof(struct vcpu_info)))  in kvm_xen_inject_pending_events()
605 		read_lock_irqsave(&gpc->lock, flags);  in kvm_xen_inject_pending_events()
608 	/* Now gpc->khva is a valid kernel address for the vcpu_info */  in kvm_xen_inject_pending_events()
610 		struct vcpu_info *vi = gpc->khva;  in kvm_xen_inject_pending_events()
622 		struct compat_vcpu_info *vi = gpc->khva;  in kvm_xen_inject_pending_events()
634 	kvm_gpc_mark_dirty_in_slot(gpc);  in kvm_xen_inject_pending_events()
635 	read_unlock_irqrestore(&gpc->lock, flags);  in kvm_xen_inject_pending_events()
644 	struct gfn_to_pfn_cache *gpc = &v->arch.xen.vcpu_info_cache;  in __kvm_xen_has_interrupt()  local
661 	read_lock_irqsave(&gpc->lock, flags);  in __kvm_xen_has_interrupt()
662 	while (!kvm_gpc_check(gpc, sizeof(struct vcpu_info))) {  in __kvm_xen_has_interrupt()
663 		read_unlock_irqrestore(&gpc->lock, flags);  in __kvm_xen_has_interrupt()
676 		if (kvm_gpc_refresh(gpc, sizeof(struct vcpu_info))) {  in __kvm_xen_has_interrupt()
683 		read_lock_irqsave(&gpc->lock, flags);  in __kvm_xen_has_interrupt()
686 	rc = ((struct vcpu_info *)gpc->khva)->evtchn_upcall_pending;  in __kvm_xen_has_interrupt()
687 	read_unlock_irqrestore(&gpc->lock, flags);  in __kvm_xen_has_interrupt()
938 		/* Either map the second page, or deactivate the second GPC */  in kvm_xen_vcpu_set_attr()
1373 	struct gfn_to_pfn_cache *gpc = &kvm->arch.xen.shinfo_cache;  in wait_pending_event()  local
1380 	read_lock_irqsave(&gpc->lock, flags);  in wait_pending_event()
1381 	if (!kvm_gpc_check(gpc, PAGE_SIZE))  in wait_pending_event()
1386 		struct shared_info *shinfo = gpc->khva;  in wait_pending_event()
1389 		struct compat_shared_info *shinfo = gpc->khva;  in wait_pending_event()
1401 	read_unlock_irqrestore(&gpc->lock, flags);  in wait_pending_event()
1730 	struct gfn_to_pfn_cache *gpc = &kvm->arch.xen.shinfo_cache;  in kvm_xen_set_evtchn_fast()  local
1755 	read_lock_irqsave(&gpc->lock, flags);  in kvm_xen_set_evtchn_fast()
1756 	if (!kvm_gpc_check(gpc, PAGE_SIZE))  in kvm_xen_set_evtchn_fast()
1760 		struct shared_info *shinfo = gpc->khva;  in kvm_xen_set_evtchn_fast()
1765 		struct compat_shared_info *shinfo = gpc->khva;  in kvm_xen_set_evtchn_fast()
1786 		read_unlock_irqrestore(&gpc->lock, flags);  in kvm_xen_set_evtchn_fast()
1787 		gpc = &vcpu->arch.xen.vcpu_info_cache;  in kvm_xen_set_evtchn_fast()
1789 		read_lock_irqsave(&gpc->lock, flags);  in kvm_xen_set_evtchn_fast()
1790 		if (!kvm_gpc_check(gpc, sizeof(struct vcpu_info))) {  in kvm_xen_set_evtchn_fast()
1801 			struct vcpu_info *vcpu_info = gpc->khva;  in kvm_xen_set_evtchn_fast()
1807 			struct compat_vcpu_info *vcpu_info = gpc->khva;  in kvm_xen_set_evtchn_fast()
1823 	read_unlock_irqrestore(&gpc->lock, flags);  in kvm_xen_set_evtchn_fast()
1870 		struct gfn_to_pfn_cache *gpc = &kvm->arch.xen.shinfo_cache;  in kvm_xen_set_evtchn()  local
1878 		rc = kvm_gpc_refresh(gpc, PAGE_SIZE);  in kvm_xen_set_evtchn()