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diff --git a/microkernel/mach/gnu_mach/projects.mdwn b/microkernel/mach/gnu_mach/projects.mdwn new file mode 100644 index 00000000..9ace6270 --- /dev/null +++ b/microkernel/mach/gnu_mach/projects.mdwn @@ -0,0 +1,129 @@ +[[meta copyright="Copyright © 2005, 2006, 2007, 2008 +Free Software Foundation, Inc."]] + +[[meta license="""[[toggle id="license" text="GFDL 1.2+"]][[toggleable +id="license" text="Permission is granted to copy, distribute and/or modify this +document under the terms of the GNU Free Documentation License, Version 1.2 or +any later version published by the Free Software Foundation; with no Invariant +Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license +is included in the section entitled +[[GNU_Free_Documentation_License|/fdl]]."]]"""]] + +This page is a place to keep track of ideas about things that may be improved +in GNU Mach, so that it'll evolve to a reliable microkernel for The Hurd, both +in terms of stability and performance. If you find anything missing here, +please feel free to add a entry with a short description. + +If you want to help with any of the task (thanks!), please send a mail to +*[[mailing_lists/bug-hurd]]* stating what task you wish to work on, +so that no duplicate efforts end up. + +# Active Branches + + * `gnumach-1-branch` is the main branch. + + * `gnumach-1-branch-Xen-branch` is a branch created by Samuel Thibault for + working on a [[ports/Xen]] port. + + * `gnumach-1-branch-gdb-branch` is a branch created by Michael Casadevall for + working on [[GDB_stubs]]. + + +# Task List + + * [[Clean_up_the_code]] + + * [[Open_Issues]] + + * Update the core architecture and drivers + + * Check what NetBSD, FreeBSD and Linux do with their host specific code + (i486, PPC, Sparc, ...). And if it might be wise to take that and use + it in GNU Mach. There is no need to worry about purely internal API's, + but the external ones shouldn't require any major changes. + + * Write a list of all functions provided by the host dependant code in + GNU Mach that gets used in the non-host specific code (kernel, IPC and + VM). + + * Once we have decided what the new internal API should look like, make a + list of the new API and the old one, and try to make things as + compatible as possible, but not at the expense of anything. + + * Implement Migrating Threads + + * Migrating Threads (MT) could improve IPC performance and making easier + the work of the scheduler. For more information, check + <http://www.usenix.org/publications/library/proceedings/sf94/ford.html> + + * Improve the external pagers interface + + * Implement read-ahead (huge I/O improvements expected). + + * Making this interface synchronous should improve I/O performance + significantly, without (almost) any drawbacks (we also get some + advantage from MT's). + + * Implement more paging eviction policies, so they fit better with usual + behaviour of the pagers. + + * Implement resource accounting for external pagers. + + * VM + + * Put it on user level (?) + + * Clean up the mess. + + * Provide a fast way to read/write from/to a memory object. + + * Simplify/normalise the code. + + * Simplify the IPC Semantics + + * There are a lot of things in GNU Mach's IPC that we don't need. Track + down those things, and get rid of them without requiring many changes + in the Hurd (the changes will affect MiG, but that is OK). + + * Temporary mappings for Client-Server memory transfers + + * Extend Mach's IPC to provide some kind of object which can represent a + range of memory that can temporarily be mapped into the servers address + space for sending/receiving data. This would allow us to avoid + excessive memory copies. + + * Find a new way to work with unaligned memory. + + * GDB remote debugging support + + * Implement support for GDB debugging via serial line and/or network. + Maybe this can be done together with the host-specific work above. + + See [[GDB_stubs]]. + + * Make it run as a [[UNIX]]/Linux executable. + + * Neal: + + <neal> here's a fun project: port the mach interface to Linux + <neal> (e.g., via kernel modifications) + <neal> or, to posix/glibc + <neal> (mmap, some minimal ptrace, etc.) + + * From the [Hurd bits at + sourceforge.net](http://sourceforge.net/projects/hurd): + <http://hurd.cvs.sourceforge.net/hurd/gnumach-otop/>, started by John + Tobey. Last time touched in 2003. Status completely unknown. + + * [README](http://hurd.cvs.sourceforge.net/hurd/gnumach-otop/README?view=markup) + + +# Wish List + + * Interface for userspace non-critical drivers. + + * Sound Support + + * WLAN support (ipw2200) with WEP/WPA + + * ACPI support |