arch/x86/xen/suspend_pv.c

   1 #include <linux/types.h>
   2
   3 #include <asm/fixmap.h>
   4
   5 #include <asm/xen/hypercall.h>
   6 #include <asm/xen/page.h>
   7
   8 #include "xen-ops.h"
   9
  10 void xen_pv_pre_suspend(void)
  11 {
  12         xen_mm_pin_all();
  13
  14         xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
  15         xen_start_info->console.domU.mfn =
  16                 mfn_to_pfn(xen_start_info->console.domU.mfn);
  17
  18         BUG_ON(!irqs_disabled());
  19
  20         HYPERVISOR_shared_info = &xen_dummy_shared_info;
  21         if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
  22                                          __pte_ma(0), 0))
  23                 BUG();
  24 }
  25
  26 void xen_pv_post_suspend(int suspend_cancelled)
  27 {
  28         xen_build_mfn_list_list();
  29
  30         xen_setup_shared_info();
  31
  32         if (suspend_cancelled) {
  33                 xen_start_info->store_mfn =
  34                         pfn_to_mfn(xen_start_info->store_mfn);
  35                 xen_start_info->console.domU.mfn =
  36                         pfn_to_mfn(xen_start_info->console.domU.mfn);
  37         } else {
  38 #ifdef CONFIG_SMP
  39                 BUG_ON(xen_cpu_initialized_map == NULL);
  40                 cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
  41 #endif
  42                 xen_vcpu_restore();
  43         }
  44
  45         xen_mm_unpin_all();
  46 }