1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/types.h> 3 4 #include <asm/xen/hypercall.h> 5 #include <asm/xen/page.h> 6 7 #include <asm/fixmap.h> 8 9 #include "xen-ops.h" 10 11 void xen_pv_pre_suspend(void) 12 { 13 xen_mm_pin_all(); 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_pv_post_suspend(int suspend_cancelled) 28 { 29 xen_build_mfn_list_list(); 30 set_fixmap(FIX_PARAVIRT_BOOTMAP, xen_start_info->shared_info); 31 HYPERVISOR_shared_info = (void *)fix_to_virt(FIX_PARAVIRT_BOOTMAP); 32 xen_setup_mfn_list_list(); 33 34 if (suspend_cancelled) { 35 xen_start_info->store_mfn = 36 pfn_to_mfn(xen_start_info->store_mfn); 37 xen_start_info->console.domU.mfn = 38 pfn_to_mfn(xen_start_info->console.domU.mfn); 39 } else { 40 #ifdef CONFIG_SMP 41 BUG_ON(xen_cpu_initialized_map == NULL); 42 cpumask_copy(xen_cpu_initialized_map, cpu_online_mask); 43 #endif 44 xen_vcpu_restore(); 45 } 46 47 xen_mm_unpin_all(); 48 } 49