hc
2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
// SPDX-License-Identifier: GPL-2.0
#include <linux/types.h>
 
#include <asm/xen/hypercall.h>
#include <asm/xen/page.h>
 
#include <asm/fixmap.h>
 
#include "xen-ops.h"
 
void xen_pv_pre_suspend(void)
{
   xen_mm_pin_all();
 
   xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
   xen_start_info->console.domU.mfn =
       mfn_to_pfn(xen_start_info->console.domU.mfn);
 
   BUG_ON(!irqs_disabled());
 
   HYPERVISOR_shared_info = &xen_dummy_shared_info;
   if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
                    __pte_ma(0), 0))
       BUG();
}
 
void xen_pv_post_suspend(int suspend_cancelled)
{
   xen_build_mfn_list_list();
   set_fixmap(FIX_PARAVIRT_BOOTMAP, xen_start_info->shared_info);
   HYPERVISOR_shared_info = (void *)fix_to_virt(FIX_PARAVIRT_BOOTMAP);
   xen_setup_mfn_list_list();
 
   if (suspend_cancelled) {
       xen_start_info->store_mfn =
           pfn_to_mfn(xen_start_info->store_mfn);
       xen_start_info->console.domU.mfn =
           pfn_to_mfn(xen_start_info->console.domU.mfn);
   } else {
#ifdef CONFIG_SMP
       BUG_ON(xen_cpu_initialized_map == NULL);
       cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
#endif
       xen_vcpu_restore();
   }
 
   xen_mm_unpin_all();
}