![[linux内存管理] 第012章 物理内存管理三大结构体之zone](https://hexoimg.oss-cn-shanghai.aliyuncs.com/blog/24/12/image_01a394592c615a3e79014ebf60d0709c.png)
Linux内存管理
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![[linux内存管理] 第011篇 内存模型之Sparse Memory Model](https://hexoimg.oss-cn-shanghai.aliyuncs.com/blog/24/12/cover_linux_memory_management_011.png)
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Android Issue
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一、问题背景我司某项目无法使用adb push push文件到/vendor/firmware_mnt目录。使用的指令以及报错结果如下：
1234567adb rootadb disable-verityadb rebootadb rootadb remountadb shell mount -o rw,remount /vendor/firmware_mntadb push test.txt /vendor/firmware_mnt
输出结果：
1234567891011121314151617181920d:\liuqi\Desktop>adb rootd:\liuqi\Desktop>adb disable-verityVerity is already disabledd:\liuqi\Desktop>adb remountVerity is already disabledRemounted /system as RWRemounted /system_ext as RWRemounted /product as RWRemounted /vendor a ...
Linux Kernel
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0. 前言其实本章想要描述的函数的功能和内存的关系并不大，但是在启动流程中，paging_init后，该函数unflatten_device_tree就会被执行。为了启动流程的完整性，也鉴于此函数也确实有必要花时间去介绍。作为Linux BSP驱动工程师我们在适配驱动的流程里，可能就是配置DTS，适配驱动代码，然后两者根据dts里的compatible属性进行匹配，就okay了。那其实是有问题的，从Linux设备驱动模型中我们可以知道，驱动代码中会将驱动注册成struct device_driver。设备树的产生就是为了替代driver中过多的platform_device部分的静态定义，将硬件资源抽象出来，由系统统一解析，这样就可以避免各驱动中对硬件资源大量的重复定义。这样一来，几乎可以肯定的是，设备树中的节点最终目标是转换成struct device，在驱动开发时就只需要添加相应的platform driver部分进行匹配即可。
那DTS的节点如何被创建成struct device的设备的呢？
注意：开机过程中设备树的解析是从setup_arch中开始的，此函数中setup_ ...
![[linux 内存管理] 第010篇 paging_init详解](https://hexoimg.oss-cn-shanghai.aliyuncs.com/blog/24/12/cover_linux_memory_management_010.png)
Linux内存管理
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c77bddbd393245f6fc84666dc3bc9a3057545a8eba17bc8282b94fc8a7c76d7ed1d7d913696725b4b6ab8ad3c161d5dff2aa92f5868b3a6d52c0532c9d40d003102583f9ceea8fdabe117d6e16855718242567e7b1fef6124fabf2c7e939edb28219be2da291dccfe5b82a5d86fe3b1664611505c6b96e5c9832b9f9f79d9c4ccf63b291ab04eb0cf8b482e6c49d273fefc55fda5f43de43e1da90c450fbeff477a7fec50f03933b90a8ba211580f974a09df8fe3d44792453afcbcc18c2f9fd6fe9c1b7d5d0fd82b3f339ba7944aa03db1d1b2c87a64ad31f549019919fb9a6cadcdcba63216f90405df977ed68ffd30e30efcd62d7eadea ...
![[linux内存管理] 第009篇 reserved-memory详解](https://hexoimg.oss-cn-shanghai.aliyuncs.com/blog/24/11/cover_linux_memory_management_009.png)
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![[linux内存管理] 第008篇 memblock子系统详解](https://hexoimg.oss-cn-shanghai.aliyuncs.com/blog/24/11/cover_linux_memory_management_008.png)
Linux内存管理
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![[linux内存管理] 第007篇 fixmap映射详解](https://hexoimg.oss-cn-shanghai.aliyuncs.com/blog/24/11/cover_linux_memory_management_007.png)
Linux内存管理
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1e24fe88ee5ff04b44b80e45bfd8f2c52ababa146b9539e7e0760a26e4e82976f79c7b07a19930b7d4d91cea8665667ebac434f2f841a31e11ff18da093e108ee1b66185b4a68d3950c94689bd31e9d685f61e3d7b23730e23273bde2a13e9abecd086c84b8ed8b82b2a2eab794ce1ecf88b3a2a762c063c4fd1f4dbd1845a2fc77e012140f646edd0ec271f0f0478c2e6ede8838a991393f640d2d0fcd6ac0808821e9fe7512231cf04a64a826ed3ab3001526a3480f7d8cb7b866c2170861144a34a69a8620c1d181d07238353aa458aef724a3f08e30749e73eac983a70040abf4d8e880b81ec583ffae3ac763e9c91c7e6219bf314336 ...
![linux内存管理] 第006篇 start_kernel全局简述](https://hexoimg.oss-cn-shanghai.aliyuncs.com/blog/24/11/cover_linux_memory_management_006.png)
Linux内存管理
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cad55c19437dff6466565c2c670ecc367c662ea6d708c56a391864162b24c26463dc2ea4b6e0f7288881a7040a97ed01438655edd0cfe64957a9a4979a3f8fbc3caa5f7139941d58b4cbee54d81681d7dbf313f152f75f6ada3168a651ebe6566f07c48423b0376b88d998a7bc807e7aceec51c77d7630b3629ef7d8037a5d157db11227343ec3281a9855789a4206c59364a3884dc4cd3c11fe9dadb1f8b1dc7755bcdde737460b27435c427a0646ea2134d0959729bb825952a8ace63860aa1b3768f2d7c5894afdec3130e52f56d19c11073520b3d43f2d9417b64c12a98dd5b127de3d7944a9ca3d533515fdea097bdc7f9ad3f71f3f4 ...
![[linux内存管理] 第005篇 启动代码分析之汇编部分](https://hexoimg.oss-cn-shanghai.aliyuncs.com/blog/24/11/banner_kernel.png)
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