KVM代码框架.docx

KVM内核代码框架内核中包含kvm的文件夹：（1）Linux-3.17.4\Documentation\virtual\kvm\（2）Linux-3.17.4\include\（3）Linux-3.17.4\drivers\s390\kvm\（4）Linux-3.17.4\virt\kvm\（5）Linux-3.17.4\arch\*\kvm\ (*号代表以下处理器体系架构：x86、tile、s390、powerpc、mips、ia64、arm64、arm) 先研究x86体系架构。（6）linux-3.17.4\arch\x86\include\asm注：因为每个文件都含有makefile，所以就不列举makefile文件了。(1)Linux-3.17.4\Documentation\virtual\kvm\下面为文档介绍，主要介绍了KVM中的使用的一些技术，对其中一部分数据结构和方法进行说明。(2)Linux-3.17.4\include\kvm\中有2个文件：代码总共行数：4957Arm_arch_timer.h:KVM定时器相关的函数代码行数：103Arm_vgic.h:虚拟通用中断控制器相关的数据结构和函数代码行数：3141）linux-3.17.4\include\trace\events\kvm.h: 代码行数：322一些跟踪事件函数的声明其中一段代码：#define kvm_trace_exit_reason\ERSN(UNKNOWN), ERSN(EXCEPTION), ERSN(IO), ERSN(HYPERCALL),\ERSN(DEBUG), ERSN(HLT), ERSN(MMIO), ERSN(IRQ_WINDOW_OPEN),\ERSN(SHUTDOWN), ERSN(FAIL_ENTRY), ERSN(INTR), ERSN(SET_TPR),\ERSN(TPR_ACCESS), ERSN(S390_SIEIC), ERSN(S390_RESET), ERSN(DCR),\ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI), ERSN(PAPR_HCALL),\ERSN(S390_UCONTROL), ERSN(WATCHDOG), ERSN(S390_TSCH)2）linux-3.17.4\include\linux\kvm_host.h: 代码行数：1101非常重要的头文件/* * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used * in kvm, other bits are visible for userspace which are defined in * include/linux/kvm_h. */3）linux-3.17.4\include\linux\kvm_para.h: 代码行数：27一个函数：static inline int kvm_para_has_feature(unsigned int feature)4）linux-3.17.4\include\linux\kvm_types.h：代码行数：79/* * Address types:* gva - guest virtual address * gpa - guest physical address * gfn - guest frame number * hva - host virtual address * hpa - host physical address * hfn - host frame number */5）linux-3.17.4\include\uapi\linux\kvm.h: 代码行数：1186 Userspace interface for /dev/kvm - kernel based virtual machine/*The bit 0 ~ bit 15 of kvm_memory_region::flags are visible for userspace, * other bits are reserved for kvm internal use which are defined in * include/linux/kvm_host.h.*/6）linux-3.17.4\include\uapi\linux\kvm_para.h: 代码行数：33/* * This header file provides a method for making a hypercall to the host * Architectures sho