mmap cacheable
I am not aware of any x86 hardware that supports the WriteBack (WB) memory type for MMIO addresses, and you are almost certainly seeing a result of that ... , From my understanding, it is not possible. Memory mapping is controlled by the operating system. The kernel will make the decisions how to ...
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 mmap cacheable 相關參考資料
how to avoid caching when using mmap() - Stack Overflow
in the mmap function and MAP_SHARED flag in the user application, it seems that the cache is enabled. The test I did is to write a value (say 5) ... https://stackoverflow.com how to do mmap for cacheable PCIe BAR - Stack Overflow
I am not aware of any x86 hardware that supports the WriteBack (WB) memory type for MMIO addresses, and you are almost certainly seeing a result of that ... https://stackoverflow.com Limit buffer cache used for mmap - Stack Overflow
From my understanding, it is not possible. Memory mapping is controlled by the operating system. The kernel will make the decisions how to ... https://stackoverflow.com linux cache一致性api--dma_alloc_* mmap_操作系统_ ...
原文地址：https://blog.csdn.net/manshq163com/article/details/18451135先理解cache的作用CPU在访问内存时，首先判断所要访问的内容是否 ... https://blog.csdn.net Linux中的mmap映射[一] - 知乎
如果使用mmap()，则在磁盘数据加载到page cache后，用户进程可以通过指针操作直接读写page cache，不再需要系统调用和内存拷贝。 https://zhuanlan.zhihu.com mmap & page cache 中的mapping之间的区别& 直接IO ...
ext4_file_mmap 中的mmap百度词条是这样说的：mmap将一个文件或者其它对象映射进内存。文件被映射到多个页上，如果文件的大小不是所有页 ... https://blog.csdn.net mmap cache、writebuffer一致性问题_dragon_cdut的博客 ...
这段代码中的pgprot_noncached()是一个宏，它实际上禁止了相关页的cache和写缓冲(write buffer),另外一个稍微少的一些限制的宏是：. https://blog.csdn.net mmap(2) - Linux manual page - man7.org
mmap, munmap - map or unmap files or devices into memory ... which pages of a mapping are currently resident in the buffer/page cache using mincore(2). https://man7.org mmap详解
当使用mmap映射文件到进程后，就可以直接操作这段虚拟地址进行文件的读写等 ... 对于共享内存映射情况，缺页异常处理程序首先在swap cache中寻找目标页（ ... https://nieyong.github.io |