This is an automated bi-weekly mailing of the FreeBSD 5.2 open issues list. The live version of this list is available at: http://www.FreeBSD.org/releases/5.2R/todo.html Automated mailing of this list will continue through the release of FreeBSD 5.2. FreeBSD 5.2 Open Issues Open Issues This is a list of open issues that need to be resolved for FreeBSD 5.2. If you have any updates for this list, please e-mail re_at_FreeBSD.org. Must Resolve Issues for 5.2-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |---------------------+-----------+-----------------+--------------------| | | | | KSE M:N threading | | | | | support is | | | | | reaching | | | | | experimental yet | | | | Julian | usable status on | | Production-quality | In | Elischer, David | i386 for | | M:N threading | progress | Xu, Daniel | 5.1-RELEASE. M:N | | | | Eischen | threading should | | | | | be productionable | | | | | and usable on all | | | | | platforms by | | | | | 5.2-RELEASE. | |---------------------+-----------+-----------------+--------------------| | | | | Kernel bits are | | | | | implemented but | | KSE support for | In | | untested. Userland | | sparc64 | progress | Jake Burkholder | bits are not | | | | | implemented. | | | | | Required for | | | | | 5.2-RELEASE. | |---------------------+-----------+-----------------+--------------------| | | | | Kernel and | | KSE support for | | Marcel | userland bits | | ia64 | Complete. | Moolenaar | implemented but | | | | | unstable. Required | | | | | for 5.2-RELEASE. | |---------------------+-----------+-----------------+--------------------| | | | | Userland bits | | | | | implemented, | | KSE support for | In | Marcel | kernel bits not | | alpha | progress. | Moolenaar | implemented. | | | | | Required for | | | | | 5.2-RELEASE. | |---------------------+-----------+-----------------+--------------------| | | | | Kris Kennaway | | | | | reports high | | | | | instability of | | | | | 5-CURRENT on ia64 | | | | | machines, such as | | ia64 stability | In | Marcel | the pluto* | | | Progress | Moolenaar | machines. These | | | | | problems need to | | | | | be fixed in order | | | | | to get a | | | | | successful package | | | | | build. | |---------------------+-----------+-----------------+--------------------| | | | | A reworking of the | | | | | sio driver is | | | | | needed to support | | | | | serial terminal | | | | Marcel | devices on sparc64 | | New serial UART | In | Moolenaar, | and ia64 | | framework | progress | Warner Losh | platforms, among | | | | | others. This is | | | | | also an enabler | | | | | for syscons | | | | | support on | | | | | sparc64. | |---------------------+-----------+-----------------+--------------------| | | | | FAST_IPSEC | | | | | currently cannot | | | | | be used directly | | | | | with the KAME IPv6 | | | | | implementation, | | | | | requiring an | | | | | additional level | | | | | of IP tunnel | | | | | indirection to | | | | | protect IPv6 | | | | | packets when using | | | | | hardware crypto | | FAST_IPSEC and KAME | | | acceleration. This | | compatibility | -- | -- | issue must be | | | | | resolved so that | | | | | the two services | | | | | may more easily be | | | | | used together. | | | | | Among other | | | | | things, this will | | | | | require a careful | | | | | review of the | | | | | handling of mbuf | | | | | header copying and | | | | | m_tag support in | | | | | the KAME IPv6 | | | | | code. | |---------------------+-----------+-----------------+--------------------| | | | | The FreeBSD KAME | | | | | IPv6 code is now | | | | | substantially | | | | | dated with respect | | | | | to the KAME vendor | | KAME | In | Hajimu UMEMOTO | source. The | | Synchronization | progress | | FreeBSD Project | | | | | needs to take | | | | | initiative in | | | | | driving the merge | | | | | of new bug fixes, | | | | | features, et al. | |---------------------+-----------+-----------------+--------------------| | | | | Almost all process | | | | | debugging tools | | | | | have been updated | | | | | to use non-procfs | | | | | kernel primitives, | | | | | with the exception | | | | | of truss(1). As | | | | | procfs is | | | | | considered | | | | | deprecated due to | | | | | its inherent | | truss support for | In | Robert Drehmel | security risks, it | | ptrace | progress | | is highly | | | | | desirable to | | | | | update truss to | | | | | operate in a | | | | | post-procfs world. | | | | | Dag-Erling | | | | | Smorgrav had | | | | | prototype patches; | | | | | Robert Drehmel is | | | | | developing and | | | | | testing patches | | | | | now. | |---------------------+-----------+-----------------+--------------------| | | | | Apple's Darwin | | | | | operating system | | | | | has fairly | | | | | extensive | | Merge of Darwin | | | improvements to | | msdosfs, other | -- | -- | msdosfs and other | | fixes | | | kernel services; | | | | | these fixes must | | | | | be reviewed and | | | | | merged to the | | | | | FreeBSD tree. | |---------------------+-----------+-----------------+--------------------| | | | | Many systems | | | | | supporting | | | | | POSIX.1e ACLs | | | | | permit a minor | | | | | violation to that | | | | | specification, in | | | | | which the ACL_MASK | | | | | entry overrides | | ACL_MASK override | In | | the umask, rather | | of umask support in | progress | Robert Watson | than being | | UFS | | | intersected with | | | | | it. The resulting | | | | | semantics can be | | | | | useful in | | | | | group-oriented | | | | | environments, and | | | | | as such would be | | | | | very helpful on | | | | | FreeBSD. | |---------------------+-----------+-----------------+--------------------| | | | | Significant parts | | | | | of the network | | | | | stack (especially | | | | | IPv4 and IPv6) now | | | | | have fine-grained | | | | | locking of their | | | | | data structures. | | | | | However, it is not | | | | | yet possible for | | | | | the netisr threads | | | | | to run without | | | | | Giant, due to | | Fine-grained | | | dependencies on | | network stack | In | Jeffrey Hsu, | sockets, routing, | | locking without | progress | Seigo Tanimura, | etc. A 5.2-RELEASE | | Giant | | Sam Leffler | goal is to have | | | | | the network stack | | | | | running largely | | | | | without Giant, | | | | | which should | | | | | substantially | | | | | improve | | | | | performance of the | | | | | stack, as well as | | | | | other system | | | | | components by | | | | | reducing | | | | | contention on | | | | | Giant. | |---------------------+-----------+-----------------+--------------------| | | | | Productionable | | | | | support for the | | | | | AMD64 platform. | | | | | Currently, AMD64 | | | | | runs fully in | | | | | 32-bit emulation | | Tier-1 Support for | In | Peter Wemm, | mode, and boots to | | AMD64 Hammer | progress | David O'Brien | single-user in | | | | | 64-bit mode. We | | | | | expect full | | | | | production support | | | | | for the AMD64 | | | | | architecture in | | | | | 5.2-RELEASE. | |---------------------+-----------+-----------------+--------------------| | | | | Kernel modules are | | | | | currently built | | | | | independently from | | | | | a kernel | | | | | configuration, and | | | | | independently from | | | | | one another, | | | | | resulting in | | | | | substantially | | | | | redundant | | | | | compilation of | | | | | objects, as well | | | | | as the inability | | | | | to easily manage | | | | | compile-time | | | | | options for kernel | | | | | objects (such as | | | | | MAC, PAE, etc) | | Revised kld build | -- | -- | that may require | | infrastructure | | | conditional | | | | | compilation in the | | | | | kernel modules. In | | | | | order to improve | | | | | build performance | | | | | and better support | | | | | options of this | | | | | sort, the KLD | | | | | build | | | | | infrastructure | | | | | needs to be | | | | | revamped. Peter | | | | | Wemm has done some | | | | | initial | | | | | prototyping, and | | | | | should be | | | | | contacted before | | | | | starting on this | | | | | work. | |---------------------+-----------+-----------------+--------------------| | | | | Currently, there | | | | | are two classes of | | | | | interrupt handlers | | | | | in 5.x: fast | | | | | interrupt handlers | | | | | which run entirely | | | | | in interrupt | | | | | context, and | | | | | heavy-weight | | | | | handlers which | | | | | execute in a | | | | | full-weight kernel | | | | | interrupt thread. | | | | | It is possible to | | | | | optimize interrupt | | | | | thread context | | | | | management such | | | | | that a | | | | | light-weight | | | | | context switch is | | | | | performed to begin | | | | | execution of the | | | | | interrupt thread | | | | | in the handler | | | | | context, and only | | Light-weight | | | when a full-weight | | interrupt threads, | -- | -- | context is | | context switches | | | required (such as | | | | | sleeping on a | | | | | lock) is that cost | | | | | required. This | | | | | optimization | | | | | should | | | | | substantially | | | | | improve interrupt | | | | | latency. There are | | | | | also additional | | | | | kernel thread | | | | | context switch | | | | | optimizations that | | | | | can be made to | | | | | improve the | | | | | performance of | | | | | thread workers in | | | | | the kernel, such | | | | | as found in the | | | | | network stack, | | | | | crypto worker | | | | | threads, and GEOM. | | | | | Bosko Milekic has | | | | | done substantial | | | | | prototyping work, | | | | | and should be | | | | | coordinated with. | |---------------------+-----------+-----------------+--------------------| | | | | The existing APIC | | | | | interrupt code | | | | | does not support | | Complete the APIC | | | PCI interrupt | | PCI interrupt | In | John Baldwin | routing properly. | | routing support | progress | | As a result, PCI | | | | | interrupts cannot | | | | | be routed either | | | | | via ACPI or across | | | | | PCI-PCI bridges. | |---------------------+-----------+-----------------+--------------------| | | | | Currently, gbde | | | | | must be manually | | | | | configured at | | | | | run-time each time | | | | | an encrypted disk | | | | | device is mounted. | | | | | This prevents easy | | Run-time | | | integration into | | autoconfiguration | | | /etc/fstab and | | of GBDE and related | -- | -- | easy automated | | transforms | | | deployment. | | | | | Improved | | | | | integration with | | | | | the configuration, | | | | | mounting, and boot | | | | | process is | | | | | required to make | | | | | this feature more | | | | | easily accessible. | |---------------------+-----------+-----------------+--------------------| | | | | Brian Feldman has | | | | | submitted patches | | | | | to improve the | | | | | consistency of the | | | | | pathnames passed | | | | | into the MAC | | MAC Framework devfs | In | Robert Watson | Framework devfs | | path fixes | progress | | labeling entry | | | | | points. These | | | | | patches need to be | | | | | thoroughly | | | | | reviewed and | | | | | tested, then | | | | | merged. | |---------------------+-----------+-----------------+--------------------| | | | | A process cannot | | | | | be interrupted | | | | | while waiting on a | | | | | lock. Fixing this | | rpc.lockd(8) | In | Robert Watson | requires that the | | stability | progress | | rpc code be taught | | | | | how to deal with | | | | | lock cancellation | | | | | and interruption | | | | | events. | +------------------------------------------------------------------------+ Desired Features for 5.2-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |---------------+-------------+----------------+-------------------------| | | | | Truss appears to | | | | | contain a race | | | | | condition during the | | | | | start-up of debugging, | | | | | which can result in | | | | | truss failing to attach | | | | | to the process before | | | | | it exits. The symptom | | | | | is that truss reports | | | | | that it cannot open the | | | | | procfs node supporting | | | | | the process being | | Race | | | debugged. A bug also | | conditions in | Errata | Robert Drehmel | appears to exist where | | truss | candidate | | in truss will hang if | | | | | execve() returns | | | | | ENOENT. A further race | | | | | appears to exist in | | | | | which truss will return | | | | | "PIOCWAIT: Input/output | | | | | error" occasionally on | | | | | startup. The fix for | | | | | this sufficiently | | | | | changes process | | | | | execution handling that | | | | | we will defer the fix | | | | | to post-5.0 and | | | | | consider this errata. | |---------------+-------------+----------------+-------------------------| | gdb -k | | | gdb -k doesn't work on | | support for | -- | Mark Peek | alpha | | alpha | | | | |---------------+-------------+----------------+-------------------------| | | | | Currently, MAC | | | | | protections are | | | | | enforced only on | | | | | locally originated file | | | | | system operations | | | | | (VOPs), and not on RPCs | | | | | generated via the NFS | | MAC support | | | server. Improvements in | | for NFS | -- | Robert Watson | NFS server credential | | Server | | | handling are required | | | | | to correct this | | | | | problem, as well as the | | | | | introduction of new | | | | | entry points to | | | | | properly label NFS | | | | | credentials and perform | | | | | enforcement properly. | |---------------+-------------+----------------+-------------------------| | | | | All PCI drivers must | | | | | use busdma for DMA; no | | busdma in all | | | use of vtophys() will | | PCI drivers | -- | -- | be permitted for any | | | | | recent device driver. | | | | | ISA drivers may be | | | | | exempt. | |---------------+-------------+----------------+-------------------------| | | | | With improved support | | | | | for threading | | | | | primitives, support is | | | | | now required to ease | | GDB thread | -- | -- | debugging of threaded | | support | | | applications. Ideally, | | | | | this support will work | | | | | for both libthr and | | | | | libkse threading | | | | | models. | |---------------+-------------+----------------+-------------------------| | | | | Prebinding reduces | | | | | executable startup time | | | | | by lowering the expense | | | | | of symbol lookup, | | | | | binding and relocation. | | | | | This is accomplished by | | | | | a prebinding data file | | | | | or ELF segment that | | | | | contains intermediate | | | | | lookup results allowing | | | | | fast symbol binding and | | | | | relocation, provided | | Per object | | | that dependent objects | | ELF | In progress | Matthew Dodd | remain unchanged since | | Prebinding | | | the prebinding | | support | | | information was | | | | | generated. | | | | | | | | | | The benefits of | | | | | prebinding are realized | | | | | when running | | | | | executables that use a | | | | | large (>10) number of | | | | | shared libraries. C++ | | | | | applications also | | | | | benefit as they contain | | | | | a large number of | | | | | relocations. | +------------------------------------------------------------------------+ Documentation items that must be resolved for 5.2 +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |---------------+--------+---------------+-------------------------------| | Bluetooth | | | It'd be nice to have some | | documentation | -- | Pav Lucistnik | Bluetooth documentation for | | | | | the Handbook. | +------------------------------------------------------------------------+ Testing focuses for 5.2-RELEASE +------------------------------------------------------------------------+ | Issue | Status | Responsible | Description | |---------------+----------+----------------+----------------------------| | | | | New ATA model has arrived. | | ATA driver | | | Much testing is needed to | | structural | Complete | So/ren Schmidt | ensure no regressions. | | improvements, | | | ATAPI-CAM seems especially | | MPsafety | | | fragile, more testing is | | | | | encouraged. | +------------------------------------------------------------------------+ ---------------------------------------------------------------------- home | contact | legal | (c) 1995-2003 The FreeBSD Project. All rights reserved. Last modified: 2003/09/01 06:09:17Received on Mon Sep 29 2003 - 05:00:52 UTC
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