root/arch/x86/xen/suspend.c

DEFINITIONS

1. xen_pre_suspend
2. xen_post_suspend
3. xen_arch_resume

#include <linux/types.h>

#include <xen/interface/xen.h>
#include <xen/grant_table.h>
#include <xen/events.h>

#include <asm/xen/hypercall.h>
#include <asm/xen/page.h>

#include "xen-ops.h"
#include "mmu.h"

void xen_pre_suspend(void)
{
        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_post_suspend(int suspend_cancelled)
{
        xen_setup_shared_info();

        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
                xen_cpu_initialized_map = cpu_online_map;
#endif
                xen_vcpu_restore();
        }

}

void xen_arch_resume(void)
{
        /* nothing */
}