idle0_task.c

来自「xen虚拟机源代码安装包」· C语言 代码 · 共 30 行

#include <xen/config.h>
#include <xen/sched.h>
#include <asm/desc.h>

#define IDLE_VCPU(_v)    	     \
{                                    \
    processor:   0,                  \
    domain:      0                   \
}

/*
 * Initial task structure.
 *
 * We need to make sure that this is properly aligned due to the way process
 * stacks are handled.
 * This is done by having a special ".data.init_task" section...
 *
 * init_task_mem shouldn't be used directly. the corresponding address in
 * the identity mapping area should be used.
 * I.e. __va(ia64_tpa(init_task_mem)) should be used.
 */
union {
	struct {
		struct vcpu task;
	} s;
	unsigned long stack[KERNEL_STACK_SIZE/sizeof (unsigned long)];
} init_task_mem __attribute__((section(".data.init_task"))) = {{
	.task = IDLE_VCPU(init_task_mem.s.task)
}};