384 	struct vcpu_guest_context *ctxt;  in cpu_initialize_context()  local
393 	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);  in cpu_initialize_context()
394 	if (ctxt == NULL)  in cpu_initialize_context()
401 	ctxt->user_regs.fs = __KERNEL_PERCPU;  in cpu_initialize_context()
402 	ctxt->user_regs.gs = __KERNEL_STACK_CANARY;  in cpu_initialize_context()
404 	memset(&ctxt->fpu_ctxt, 0, sizeof(ctxt->fpu_ctxt));  in cpu_initialize_context()
407 		ctxt->user_regs.eip = (unsigned long)cpu_bringup_and_idle;  in cpu_initialize_context()
408 		ctxt->flags = VGCF_IN_KERNEL;  in cpu_initialize_context()
409 		ctxt->user_regs.eflags = 0x1000; /* IOPL_RING1 */  in cpu_initialize_context()
410 		ctxt->user_regs.ds = __USER_DS;  in cpu_initialize_context()
411 		ctxt->user_regs.es = __USER_DS;  in cpu_initialize_context()
412 		ctxt->user_regs.ss = __KERNEL_DS;  in cpu_initialize_context()
414 		xen_copy_trap_info(ctxt->trap_ctxt);  in cpu_initialize_context()
416 		ctxt->ldt_ents = 0;  in cpu_initialize_context()
424 		ctxt->gdt_frames[0] = gdt_mfn;  in cpu_initialize_context()
425 		ctxt->gdt_ents      = GDT_ENTRIES;  in cpu_initialize_context()
427 		ctxt->kernel_ss = __KERNEL_DS;  in cpu_initialize_context()
428 		ctxt->kernel_sp = idle->thread.sp0;  in cpu_initialize_context()
431 		ctxt->event_callback_cs     = __KERNEL_CS;  in cpu_initialize_context()
432 		ctxt->failsafe_callback_cs  = __KERNEL_CS;  in cpu_initialize_context()
434 		ctxt->gs_base_kernel = per_cpu_offset(cpu);  in cpu_initialize_context()
436 		ctxt->event_callback_eip    =  in cpu_initialize_context()
438 		ctxt->failsafe_callback_eip =  in cpu_initialize_context()
440 		ctxt->user_regs.cs = __KERNEL_CS;  in cpu_initialize_context()
450 		ctxt->user_regs.eip = (unsigned long)xen_pvh_early_cpu_init;  in cpu_initialize_context()
451 		ctxt->user_regs.rdi = cpu;  in cpu_initialize_context()
452 		ctxt->user_regs.rsi = true;  /* entry == true */  in cpu_initialize_context()
455 	ctxt->user_regs.esp = idle->thread.sp0 - sizeof(struct pt_regs);  in cpu_initialize_context()
456 	ctxt->ctrlreg[3] = xen_pfn_to_cr3(virt_to_gfn(swapper_pg_dir));  in cpu_initialize_context()
457 	if (HYPERVISOR_vcpu_op(VCPUOP_initialise, cpu, ctxt))  in cpu_initialize_context()
460 	kfree(ctxt);  in cpu_initialize_context()