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2023-11-07 5e8555e3ea324daaf0e38422bcba48c4df33a0d9

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// SPDX-License-Identifier: GPL-2.0
#include <linux/types.h>
 
#include <asm/fixmap.h>
 
#include <asm/xen/hypercall.h>
#include <asm/xen/page.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();
}