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authorThomas Schwinge <tschwinge@gnu.org>2008-11-05 14:58:33 +0100
committerThomas Schwinge <tschwinge@gnu.org>2008-11-05 14:58:33 +0100
commitae9e4e22a7ce8b2b56e98ff1708c2e8d42eefd69 (patch)
tree53d824c19af411f67db44baeacba9b22b68731e6 /microkernel/mach/gnumach/projects.mdwn
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-[[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