This document describes the virtual memory layout used by the AArch64 Linux kernel. The architecture allows up to 4 levels of translation tables with a 4KB page size and up to 3 levels with a 64KB page size. AArch64 Linux uses 3 levels of translation tables with the 4KB page configuration...
lecture materials ===Memory Layout on AArch64 Linux===Author: Catalin Marinas <catalin.marinas@arm.com>This document describes the virtual memory layout used by the AArch64Linux kernel. The architecture allows up to 4 levels of translationtables with a 4KB page size and up to 3 levels with...
#endif /* CONFIG_DYNAMIC_MEMORY_LAYOUT */ 具体实现在https://elixir.bootlin.com/linux/v6.1/source/arch/x86/mm/kaslr.c#L118: for (i = 0; i < ARRAY_SIZE(kaslr_regions); i++) { //kaslr_regions 包括vmalloc,page offset, vmemmap的base addr unsigned long entropy; /* * Select a random...
我们先执行aarch64-linux-gnu-objdump –s –x –d vmlinux > vmlinux.txt命令得到反编译文件。现在好多重要的信息在vmlinux.txt。现在主要就是查看vmlinux.txt文件。先看一下_GLOBAL__sub_I_65535_1_smc_num1函数的实现。 汇编和C语言传递参数在ARM64平台使用的是x0~x7。通过上面的汇编计算一下,x0=0xf...
原文:Linux内存管理:ARM Memory Layout以及mmu配置 在内核进行page初始化以及mmu配置之前,首先需要知道整个memory map。 1. ARM Memory Layout PAGE_OFFSET Start address of Kernel space 0xC000_0000 lowmem Kernel direct-mapped RAM region (1:1 mapping) Maximum 896M HIGH_MEMORY End address of low...
原文:Linux内存管理:ARM Memory Layout以及mmu配置 在内核进行page初始化以及mmu配置之前,首先需要知道整个memory map。 1. ARM Memory Layout PAGE_OFFSET Start address of Kernel space 0xC000_0000 lowmem Kernel direct-mapped RAM region (1:1 mapping) ...
当我们打开KASAN的时候,SLUB Allocator管理的object layout将会放生一定的变化。如下图所示。 在打开SLUB_DEBUG的时候,object就增加很多内存,KASAN打开之后,在此基础上又加了一截。为什么这里必须打开SLUB_DEBUG呢?是因为有段时间KASAN是依赖SLUBU_DEBUG的,什么意思呢?就是在Kconfig中使用了depends on,明白了吧。不过最...
It also introduces a new tool called pmemcheck which validates the correctness of stores made to persistent memory. Be aware that this is still a prototype tool. Please see the file COPYING for information on the license. The layout is identical to the original Valgrind. The new tool is ...
* On NUMA machines, each NUMA node would have a pg_data_t to describe * it's memory layout. On UMA machines there is a single pglist_data which * describes the whole memory. * * Memory statistics and page replacement data structures are maintained on a ...
在win10/win11下使用PADS layout时,报错‘’Outofmemory‘’,或者报错‘’数据库严重错误编号 2010‘’已经尝试过:1.加大内存条内存,无法解决2.加大虚拟内存 yjw_dzfsy2023-03-25 18:58:13 28377D编译提示Memory不够怎么解决? memory.placement with alignment/blocking fails for section ".text" size 0x2a69...