而中断向量表的初始化情况是,第一部分是经过一段汇编代码对整个中断向量表进行初始化,第二部分是在系统进入start_kernel()函数后分别对异常和中断进行初始化。在linux中,中断向量表用idt_table[NR_VECTORS]数组进行描述,中断向量(门描述符)在系统中用struct desc_struct结构表示,具体我们可以往下看。
/* * zone->lock and zone->lru_lock are two of the hottest locks in the kernel. * So add a wild amount of padding here to ensure that they fall into separate * cachelines. There are very few zone structures in the machine, so space * consumption is not a concern here. */ #if ...
[ req ]default_bits=4096distinguished_name= req_distinguished_nameprompt=nostring_mask= utf8onlyx509_extensions= myexts[ req_distinguished_name ]#O = Unspecified companyCN= Build time autogenerated kernel key#emailAddress = unspecified.user@unspecified.company[ myexts ]basicConstraints=critical,CA:FAL...
* Treat pages to be ZONE_MOVABLE in ZONE_NORMAL as absent pages * and vice versa. */ if (mirrored_kernelcore && zone_movable_pfn[nid]) { unsigned long start_pfn, end_pfn; struct memblock_region *r; for_each_mem_region(r) { start_pfn = clamp(memblock_region_memory_base_pfn(r), ...
On machines with * highmem some memory is mapped into kernel virtual memory * dynamically, so we need a place to store that address. * Note that this field could be 16 bits on x86 ... ;) * * Architectures with slow multiplication can define * WANT_PAGE_VIRTUAL in asm/page.h */ #...
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cp -v /boot/config-5.10.0-10-amd64 /root/Kernel/.config(/root/Kernel/为内核源代码所在目录) 定制内核,启用或者禁用你需要或者不需要的模块 make menuconfig 编译内核和模块 make -j 8 deb-pkg make -j 选项表示并行编译。 make -j8,让make最多允许8个编译命令同时执行,这样可以更有效的利用CPU资源。
浅析Linux Kernel[5.11.0]内存管理(一) 一、前言 本文基于如下环境: Kernel Version:5.11.0 Debugging Env:Ubuntu 20.04.02 x64(Kernel Version—5.11.0) 近来笔者计划从脏牛漏洞入手,分析Linux内核漏洞,故在开始之前学习了Linux内核中内存管理部分相关内容,下文权当笔者学习过程整理的笔记。如有不当之处,望读者不...
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* that are useful before the MMU is enabled. The allocations are described * in the entry routines. */ 2. 内核启动入口 根据Makefile对KBUILD_LDS的定义,链接vmlinux使用的连接脚本为arch/$(SRCARCH)/kernel/vmlinux.lds。从链接脚本arch/arm64/kernel/vmlinux.lds可以查到,程序的入口为_text,镜像起始...