| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | #include <linux/types.h> |
| 3 | |
| 4 | #include <asm/fixmap.h> |
| 5 | |
| 6 | #include <asm/xen/hypercall.h> |
| 7 | #include <asm/xen/page.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 | } |