static void
vm_suspend_resume(struct vmctx *ctx)
{
/*
* If we get warm reboot request, we don't want to exit the
* vcpu_loop/vm_loop/mevent_loop. So we do:
* 1. pause VM
* 2. flush and clear ioreqs
* 3. stop vm watchdog
* 4. wait for resume signal
* 5. reset vm watchdog
* 6. hypercall restart vm
*/
vm_pause(ctx);
vm_clear_ioreq(ctx);
vm_stop_watchdog(ctx);
wait_for_resume(ctx);
pm_backto_wakeup(ctx);
vm_reset_watchdog(ctx);
vm_reset(ctx);
/* set the BSP init state */
vm_set_vcpu_regs(ctx, &ctx->bsp_regs);
vm_run(ctx);
}
static void
vm_system_reset(struct vmctx *ctx)
{
/*
* If we get system reset request, we don't want to exit the
* vcpu_loop/vm_loop/mevent_loop. So we do:
* 1. pause VM
* 2. flush and clear ioreqs
* 3. reset virtual devices
* 4. load software for UOS
* 5. hypercall reset vm
* 6. reset suspend mode to VM_SUSPEND_NONE
*/
vm_pause(ctx);
/*
* After vm_pause, there should be no new coming ioreq.
*
* Unless under emergency mode, the vcpu writing to the ACPI PM
* CR should be the only vcpu of that VM that is still
* running. In this case there should be only one completed
* request which is the APIC PM CR write. VM reset will reset it
*
* When handling emergency mode triggered by one vcpu without
* offlining any other vcpus, there can be multiple VHM requests
* with various states. We should be careful on potential races
* when resetting especially in SMP SOS. vm_clear_ioreq can be used
* to clear all ioreq status in VHM after VM pause, then let VM
* reset in hypervisor reset all ioreqs.
*/
vm_clear_ioreq(ctx);
vm_reset_vdevs(ctx);
vm_reset(ctx);
vm_set_suspend_mode(VM_SUSPEND_NONE);
/* set the BSP init state */
acrn_sw_load(ctx);
vm_set_vcpu_regs(ctx, &ctx->bsp_regs);
vm_run(ctx);
}
boolean vm_reset_wrap(void* userData) {
vm_reset();
return true;
}
/**
* Resets the SCN 2.0 library.
* Called when the app starts a new scene or animation frame.
*/
int scn20_reset(void)
{
vm_reset();
return 1;
}
