通过检查/proc/iomem这个虚拟文件,就可以知道这些reserved的空间,是如何进一步分配给不同的设备来使用了。 ACPI data(ACPI 可回收内存):映射到用来存放ACPI数据的RAM空间,操作系统应该将ACPI Table读入到这个区间内。 ACPI NVS(ACPI NVS 内存):映射到用来存放ACPI数据的非易失性存储空间,操作系统不能使用。 Unusable(...
/* create a new bios memory map, removing overlaps */ overlap_entries=0;/* number of entries in the overlap table */ new_bios_entry=0;/* index for creating new bios map entries */ last_type =0;/* start with undefined memory type */ last_addr =0;/* start with 0 as last starti...
/* create a new bios memory map, removing overlaps */ overlap_entries=0; /* number of entries in the overlap table */ new_bios_entry=0; /* index for creating new bios map entries */ last_type = 0; /* start with undefined memory type */ last_addr = 0; /* start with 0 as l...
e820就是BIOS像x86架构（包括x86_64）上的操作系统引导程序提供物理内存信息的功能。当请求BIOS中断号15H，并且置操作码AX=E820H的时候，BIOS就会向调用者报告可用的物理地址区间等信息，e820由此得名。Linux内核也通过这种机制来获得物理地址信息，使用dmesg可以看到相关的信息：?1 2 3 4 5 6 7 8 9 10 11 12...
Vectra E830iPd Flame Retardant; Platable Vectra S135 Flame Retardant; Halogen Free Vectra S471 High Flow; High Heat Resistance; Low Warpage Vectra S475 Flame Retardant; High Flow; High Heat Resistance Vectra S540 Flame Retardant; High Flow; Low Warpage Vectra S625 Flame Retardant; Good Wear Resi...
应该打开一个文件以使映射成功，换句话说就是映射必须打开一个文件，但在映射内存之后，该文件不需要保持...
This table gives cross-reference parts and alternative options found for 501S42E820JV4E. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are ...
This table gives cross-reference parts and alternative options found for ERJP08E8201V. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are li...
reftable sha1 sha1collisiondetection sha1dc sha256 t templates trace2 xdiff .cirrus.yml .clang-format .editorconfig .gitattributes .gitignore .gitlab-ci.yml .gitmodules .mailmap .tsan-suppressions CODE_OF_CONDUCT.md COPYING GIT-VERSION-GEN INSTALL LGPL-2.1 Makefile README.md RelNotes SECURITY...
reftable sha1 sha1collisiondetection sha1dc sha256 t templates trace2 xdiff .cirrus.yml .clang-format .editorconfig .gitattributes .gitignore .gitlab-ci.yml .gitmodules .mailmap .tsan-suppressions CODE_OF_CONDUCT.md COPYING GIT-VERSION-GEN INSTALL LGPL-2.1 Makefile README.md RelNotes SECURITY...