1 #include <linux/types.h> 2 #include <linux/clockchips.h> 3 4 #include <xen/interface/xen.h> 5 #include <xen/grant_table.h> 6 #include <xen/events.h> 7 8 #include <asm/xen/hypercall.h> 9 #include <asm/xen/page.h> 10 #include <asm/fixmap.h> 11 12 #include "xen-ops.h" 13 #include "mmu.h" 14 15 void xen_pre_suspend(void) 16 { 17 xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn); 18 xen_start_info->console.domU.mfn = 19 mfn_to_pfn(xen_start_info->console.domU.mfn); 20 21 BUG_ON(!irqs_disabled()); 22 23 HYPERVISOR_shared_info = &xen_dummy_shared_info; 24 if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP), 25 __pte_ma(0), 0)) 26 BUG(); 27 } 28 29 void xen_hvm_post_suspend(int suspend_cancelled) 30 { 31 int cpu; 32 xen_hvm_init_shared_info(); 33 xen_callback_vector(); 34 if (xen_feature(XENFEAT_hvm_safe_pvclock)) { 35 for_each_online_cpu(cpu) { 36 xen_setup_runstate_info(cpu); 37 } 38 } 39 } 40 41 void xen_post_suspend(int suspend_cancelled) 42 { 43 xen_build_mfn_list_list(); 44 45 xen_setup_shared_info(); 46 47 if (suspend_cancelled) { 48 xen_start_info->store_mfn = 49 pfn_to_mfn(xen_start_info->store_mfn); 50 xen_start_info->console.domU.mfn = 51 pfn_to_mfn(xen_start_info->console.domU.mfn); 52 } else { 53 #ifdef CONFIG_SMP 54 BUG_ON(xen_cpu_initialized_map == NULL); 55 cpumask_copy(xen_cpu_initialized_map, cpu_online_mask); 56 #endif 57 xen_vcpu_restore(); 58 } 59 60 } 61 62 static void xen_vcpu_notify_restore(void *data) 63 { 64 unsigned long reason = (unsigned long)data; 65 66 /* Boot processor notified via generic timekeeping_resume() */ 67 if ( smp_processor_id() == 0) 68 return; 69 70 clockevents_notify(reason, NULL); 71 } 72 73 void xen_arch_resume(void) 74 { 75 on_each_cpu(xen_vcpu_notify_restore, 76 (void *)CLOCK_EVT_NOTIFY_RESUME, 1); 77 } 78