MINIX 3.3.0 发布
MINIX是一份像UNIX的计算机操作系统，它基于微内核架构。它极其地小，运行于内核模式的部分仅约5000行可执行代码，而运行于用户模式的部分被 分解为小型且独立的模块，从而提高系统可靠性。它最初被设计为一份教学工具，但最新版本的MINIX也面向嵌入式系统及低端笔记本电脑。
Dear all,
The MINIX team is proud to announce the latest MINIX release, named 3.2.1, a year after the previous release, 3.2.0. 3.2.1 boasts significantly more polish again in terms of base-system expansion and cleanup, in areas such as userland utilities, libraries, the build system, but also drivers and kernel improvements, various performance improvements, and more. A detailed list follows:
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Development
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Support for dynamically linked executables, also build shared versions of base system libraries
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Remove the use of Intel segments altogether, giving a performance boost while context switching. Rely exclusively on page tables. (more info)
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Added support for SYSENTER/SYSCALL based system kernel calls, a significant performance improvement. (more info)
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Full new clean updated NetBSD build system import. build.sh is supported, allowing crossbuilding MINIX 3.
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Imported or upgraded many userland utilities and libraries from NetBSD: libc, lorder, join, mtree, tsort, cksum, kill, xinstall, du, libutil, tic, postinstall, flex, zlib, bsdtar, ls, sort, cat, echo, pax, file, mktemp, libc,csu, curses, byacc, tput, test, ln, nvi,ctags, infocomp, nbperf, make, m4, bzip2, libcrypt, printf, passwd, make, ed, nawk, expr, pwd.
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DDEKIT support (support for USB keyboards, mice and mass storage).
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Generalization of the TTY driver.
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Small and large cleanup represented by retiring MINIXisms such as nonsymbolic rootdev, dev2name, checkhier, badblocks, readall, BIOS_SEG and umap_bios, bios_wini, C macros as _ANSI, _CONST, _VOLATILE, _SIZET, _ARGS, _VOID, PUBLIC, PRIVATE and FORWARD, _PROTOTYPE.
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VM: Generalized munmap (boot time ramdisk is now freed, saving memory).
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VFS interaction with drivers is fully asynchronous, making VFS immune to uncooperative drivers. (more info)
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Exec performance improvement and generalization. Reduce copying, and kernel, RS, VFS and VM all use the same executable parsing code.
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Some more abstraction in VM to support future improvements.
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Implemented dynamic mtab support and the mount -a command
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Generalized the file system cache. (more info)
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Changes
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Make world was replaced with make build
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Dropped support for a.out binaries
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Drivers, FS
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E1000 add support for 82545EM
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EXT2 support improvements. (more info)
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Virtio: virtio-blk, virtio-net drivers
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How to use: http://wiki.minix3.org/en/UsersGuide/RunningOnQemu
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Support for AHCI
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Add VBFS: VirtualBox Shared Folder File System
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rtl8169: add support for RTL8101E family
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Keymaps
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Portuguese keymap
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Brazilian keymap
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Userland
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Rewritten sprofalyze in C for better performance.
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There are exciting new developments coming in the near future that aren’t part of this release. For example, the MINIX team has been working hard on MINIX/ARM support, of which significant parts have made it to mainline, yet official ARM support is slated for the near future and is not officially part of this release. Also a fully dynamic linked userland (packages and base system), updated packages, and more, is coming soon. Keep an eye on our discussion group athttps://groups.google.com/forum/#!forum/minix3 for more info.
You are invited to try our release 3.2.1 and become part of our contributing community! See http://www.minix3.org/ andhttp://wiki.minix3.org/ for more info.
Our IRC channel is #minix on freenode.
To download 3.2.1, visit http://www.minix3.org/download/
Regards,
The MINIX team
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