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 #include <asm/fixmap.h>
  10
  11 #include "xen-ops.h"
  12 #include "mmu.h"
  13
  14 void xen_pre_suspend(void)
  15 {
  16         xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
  17         xen_start_info->console.domU.mfn =
  18                 mfn_to_pfn(xen_start_info->console.domU.mfn);
  19
  20         BUG_ON(!irqs_disabled());
  21
  22         HYPERVISOR_shared_info = &xen_dummy_shared_info;
  23         if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
  24                                          __pte_ma(0), 0))
  25                 BUG();
  26 }
  27
  28 void xen_post_suspend(int suspend_cancelled)
  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 }
  46
  47 void xen_arch_resume(void)
  48 {
  49         /* nothing */
  50 }