arch/x86/xen/suspend.c

   1 #include <linux/types.h>
   2
   3 #include <xen/interface/xen.h>
   4 #include <xen/grant_table.h>
   5 #include <xen/events.h>
   6
   7 #include <asm/xen/hypercall.h>
   8 #include <asm/xen/page.h>
   9
  10 #include "xen-ops.h"
  11 #include "mmu.h"
  12
  13 void xen_pre_suspend(void)
  14 {
  15         xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
  16         xen_start_info->console.domU.mfn =
  17                 mfn_to_pfn(xen_start_info->console.domU.mfn);
  18
  19         BUG_ON(!irqs_disabled());
  20
  21         HYPERVISOR_shared_info = &xen_dummy_shared_info;
  22         if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
  23                                          __pte_ma(0), 0))
  24                 BUG();
  25 }
  26
  27 void xen_post_suspend(int suspend_cancelled)
  28 {
  29         xen_setup_shared_info();
  30
  31         if (suspend_cancelled) {
  32                 xen_start_info->store_mfn =
  33                         pfn_to_mfn(xen_start_info->store_mfn);
  34                 xen_start_info->console.domU.mfn =
  35                         pfn_to_mfn(xen_start_info->console.domU.mfn);
  36         } else {
  37 #ifdef CONFIG_SMP
  38                 BUG_ON(xen_cpu_initialized_map == NULL);
  39                 cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
  40 #endif
  41                 xen_vcpu_restore();
  42         }
  43
  44 }
  45
  46 void xen_arch_resume(void)
  47 {
  48         /* nothing */
  49 }