Commit Graph

42 Commits

Author SHA1 Message Date
Stefan Kalkowski d233186900 L4Linux: hold queue lock in block driver (fix #395)
When finishing a block request in the L4Linux block stub driver,
we#ve to hold the queue lock before using __blk_end_request_all, or
simply use blk_end_request_all instead. Moreover, this commit simplifies
the lock/unlock behaviour when the block queue has to be stopped, or resumed.
Thanks to I. Ismagilov for these suggestions.
2012-11-26 20:58:10 +01:00
Martin Stein 05f5999e71 cpu_session: Access thread state by value 2012-11-23 12:20:22 +01:00
Stefan Kalkowski 70dfe4fcd7 Fiasco.OC: forward CC, and CXX variables (fix #462)
When building the Fiasco.OC kernel, and L4Linux within the Genode build system,
forward the CC, and CXX variables. It might contain useful tools like ccache,
or distcc to speed up compilation. Moreover, don't delete the MAKEFLAGS when
building Fiasco.OC. It hinders parallel builds.
2012-11-03 09:50:37 +01:00
Stefan Kalkowski 518cbc5a5f L4Linux: no linux-kernel memcpy in cxx (fix #446)
Certain symbols from the libgcc_eh library in cxx that is linked with the
L4Linux kernel were resolved by using kernel internal implementations.
This lead to errors because the complete Linux kernel is built regparm=3.
This patch prefixes the appropriate symbols in the Linux Kernel and its
modules. Moreover, it fixes some warnings introduced by the latest update
to gcc 4.7.
2012-11-03 09:49:04 +01:00
Stefan Kalkowski 81e0bfefb6 L4Linux: fix conversion bug (fix #409) 2012-10-24 11:34:39 +02:00
Alexander Boettcher 83039267fa Cleanup: remove 'first' and 'next' of cpu_session
Fixes #10
2012-10-24 11:34:38 +02:00
Stefan Kalkowski a287831537 L4Linux: dimension block cache correctly (fix #426)
In Genode's paravirtualized block driver a request cache is used to find again
Linux request structures via corresponding block-session packets. To work
correctly the cache needs to have at least the same size like the
block-session's queue-size.
2012-10-23 11:10:55 +02:00
Stefan Kalkowski d54304ddfc L4Linux: debug messages into file instead of pipe
Print Fiasco.OC kernel debugger messages into a file instead of a pipe
in the default l4linux run-script. Thereby rarely triggered issues by the
nightly running buildbot can be analyzed after the test failed.
2012-10-22 11:19:41 +02:00
Sebastian Sumpf 7822c4e9a4 L4Linux: Make block driver MP safe
Release block-request-queue-spin lock when blocking during packet allocations, this
is necessary to re-enable VCPU IRQs.

Fixes issue #395
2012-10-12 16:31:01 +02:00
Sebastian Sumpf c06dc73738 L4Linux: Block driver add IRQ guards
Use IRQ guards in C++ interface when calling Genode intefaces.

Supplements issue #406
2012-10-12 16:30:47 +02:00
Stefan Kalkowski 0114391e0a L4Linux: fix IRQ save functions (fix #406) 2012-10-12 13:10:49 +02:00
Stefan Kalkowski c12d2f80f2 L4lx: re-apply network performance hook
Re-enable tcp-patch introduced by Sebastian Sumpf that tweaks TCP rmem,
and wmem buffer sizes to show better performance results.
2012-09-24 09:18:00 +02:00
Alexander Boettcher ea38aad30e Move context area definition to native_type 2012-09-24 09:17:54 +02:00
Norman Feske 3e406a1077 Increase quota of USB driver
The memory allocation heuristics in the usb driver provided by dde_linux
changed with the recent commit 71b2b42936.
Apparently, the new variant requires a larger memory pool. Increasing
the quota is a temporary fix until the memory allocator gets revisited.
2012-09-18 10:53:17 +02:00
Stefan Kalkowski efe3b8af74 L4Linux: update to recent version (svn rev. 25) 2012-09-18 10:53:16 +02:00
Stefan Kalkowski 760f37fc86 Fiasco.OC: enable SMP for L4Linux
This commit comprises the following changes to enable L4Linux to use several
CPUs:
* change default configuration for x86 and ARM
* add atomic cmpxchg operation to l4re library
* implement l4_sleep (per thread)
* enable setting affinity for VCPUs and IRQs
* move "per CPU" section within linker-script (x86 only)
* introduce SMP run-script for pandaboard
* deactivate direct scheduler (Fiasco.OC syscall) access by L4Linux
2012-09-14 12:30:29 +02:00
Stefan Kalkowski a5ea6765d1 Fiasco.OC: several capability ref-counter fixes.
This commit fixes several issues that were triggered e.g. by the
'noux_tool_chain' run-script (fix #208 in part). The following problems
are tackled:
* Don't reference count capability selectors within a task that are actually
  controlled by core (all beneath 0x200000), because it's undecideable which
  "version" of a capability selector we currently use, e.g. a thread gets
  destroyed and a new one gets created immediately some other thread might
  have a Native_capability pointing to the already destroyed thread's gate
  capability-slot, that is now a new valid one (the one of the new thread)
* In core we cannot invalidate and remove a capability from the so called
  Cap_map before each reference to it is destroyed, so don't do this in
  Cap_session_component::free, but only reference-decrement within there,
  the actual removal can only be done in Cap_map::remove. Because core also
  has to invalidate a capability to be removed in all protection-domains
  we have to implement a core specific Cap_map::remove method
* When a capability gets inserted into the Cap_map, and we detect an old
  invalid entry with the dame id in the tree, don't just overmap that
  invalid entry (as there exist remaining references to it), but just remove
  it from the tree and allocate an new entry.
* Use the Cap_session_component interface to free a Pager_object when it
  gets dissolved, as its also used for allocation
2012-09-03 10:59:54 +02:00
Norman Feske 67fdc1b44b Increase quota of USB driver
The additional quota is needed because of the recent performance
optimizations of the USB/networking code, e.g., to support the
increased NIC packet-stream buffer size.
2012-08-08 12:32:13 +02:00
Norman Feske a5e95167d9 L4Lx: downsize priority of multi-linux instances 2012-08-07 22:26:34 +02:00
Stefan Kalkowski 5118b5e1e6 L4Linux: make the l4lx library less verbose. 2012-08-07 22:24:23 +02:00
Sebastian Sumpf 8734eab6ac L4LX: Network interface fixes
Make calls using IPCs IRQ safe, handle packet exhaustion, removed
'Packet_pool', tweak TCP rmem and wmem buffer sizes to show better performance
results, use 'Net::Packet_allocator, fix 'update-patch' Makefile command
2012-08-07 22:22:28 +02:00
Stefan Kalkowski 23f11a4dca Add run-script to start multiple Linux' 2012-07-31 12:08:15 +02:00
Norman Feske b37a28578c Synchronize startup of signal receiver thread 2012-07-25 19:14:06 +02:00
Norman Feske 4454eb03eb Minimalistic L4Linux setup for pandaboard 2012-07-25 19:14:05 +02:00
Norman Feske 54c90c1592 Run script for demoing Genode on Pandaboard 2012-07-10 16:48:54 +02:00
Sebastian Sumpf a55f04a160 Two linux run script: Enable network 2012-07-10 16:30:29 +02:00
Sebastian Sumpf e52a33783a ARM/L4Linux alignment
Change access of IP header in 'icmp_echo' to work with unaligned data
2012-07-10 16:30:29 +02:00
Norman Feske 5c731c97cd Enable VFAT for L4Linux on ARM 2012-07-10 15:21:39 +02:00
Norman Feske f4c4eadb21 Fix documentation error 2012-07-10 14:59:46 +02:00
Norman Feske ff7f6334bc Add panda support to two_linux.run script 2012-06-22 11:50:13 +02:00
Stefan Kalkowski 2c8dbb3b04 Add run-script starting two L4Linux instances 2012-06-22 11:50:12 +02:00
Stefan Kalkowski 34efd709cc Rework l4android script for convenience reasons
Use terminals for LOG output of L4Android scenario, as well as a terminal
session for the Linux terminal. Now everything can be used interactively
on one screen: the Linux/Android framebuffer, the Linux console, and the
LOG-output of L4Linux.
2012-05-29 13:55:00 +02:00
Christian Helmuth 36ae42b8ff Check for required tools on 'make prepare'
Fixes #221.
2012-05-29 13:55:00 +02:00
Stefan Kalkowski ac1ff2f5f8 Fiasco.OC: keep reference to capabilities in use.
Due to recently introduces smart-pointers to Cap_index objects it's
necessary to always keep at least one reference as long as a corresponding
slot in the capability-space of a process is in use. This is especially
important for L4Linux that uses cap-slots directly without the given
abstractions of Genode.
2012-05-09 20:50:57 +02:00
Stefan Kalkowski d287b9d893 Fiasco.OC: introduce Cap_index (fixes #149, #112)
This commit introduces a Cap_index class for Fiasco.OC's capabilities.
A Cap_index is a combination of the global capability id, that is used by Genode
to correctly identify a kernel-object, and a corresponding entry in a
protection-domain's (kernel-)capability-space. The cap-indices are non-copyable,
unique objects, that are held in a Cap_map. The Cap_map is used to re-find
capabilities already present in the protection-domain, when a capability is
received via IPC. The retrieval of capabilities effectively fixes issue #112,
meaning the waste of capability-space entries.
Because Cap_index objects are non-copyable (their address indicates the position
in the capability-space of the pd), they are inappropriate to use as
Native_capability. Therefore, Native_capability is implemented as a reference
to Cap_index objects. This design seems to be a good pre-condition to implement
smart-pointers for entries in the capability-space, and thereby closing existing
leaks (please refer to issue #32).

Cap_index, Cap_map, and the allocator for Cap_index objects are designed in a way,
that it should be relatively easy to apply the same concept to NOVA also. By now,
these classes are located in the `base-foc` repository, but they intentionally
contain no Fiasco.OC specific elements.

The previously explained changes had extensive impact on the whole Fiasco.OC
platform implementation, due to various dependencies. The following things had to
be changed:

* The Thread object's startup and destruction routine is re-arranged, to
  enable another thread (that calls the Thread destructor) gaining the
  capability id of the thread's gate to remove it from the Cap_map, the
  thread's UTCB had to be made available to the caller, because there
  is the current location of that id. After having the UTCB available
  in the Thread object for that reason, the whole thread bootstrapping
  could be simplified.
* In the course of changing the Native_capability's semantic, a new Cap_mapping
  class was introduced in core, that facilitates the establishment and
  destruction of capability mappings between core and it's client's, especially
  mappings related to Platform_thread and Platform_task, that are relevant to
  task and thread creation and destruction. Thereby, the destruction of
  threads had to be reworked, which effectively removed a bug (issue #149)
  where some threads weren't destroyed properly.
* In the quick fix for issue #112, something similar to the Cap_map was
  introduced available in all processes. Moreover, some kind of a capability
  map already existed in core, to handle cap-session request properly. The
  introduction of the Cap_map unified both structures, so that the
  cap-session component code in core had to be reworked too.
* The platform initialization code had to be changed sligthly due to the
  changes in Native_capability
* The vcpu initialization in the L4Linux support library had to be adapted
  according to the already mentioned changes in the Thread object's bootstrap
  code.
2012-03-22 14:10:44 +01:00
Stefan Kalkowski 84ca4b25db L4Linux: fix changed name scope of enums.
This bug was introduced by commit c9c21ad39c, where Fiasco_capability
was removed, and enums defined in that class scope went to the namespace
Fiasco. In L4Linux some references to Fiasco_capability remained.
2012-03-10 15:52:18 +01:00
Stefan Kalkowski 0973215cf0 Adapt memory quota to recent Fiasco.OC changes
When introducing an avl-tree to re-find known capabilities in Fiasco.OC
(issue #112), the memory demand of apllications was slightly increased.
So we've to give the pl11x driver more memory by default. Fixes #140.
2012-03-06 17:02:48 +01:00
Christian Helmuth 92171e9b86 Fiasco.OC: Reduce capability-allocator size
The old variant provided 8K capability slots to all processes on core,
which increased binaries by 180 KB for the static allocator. I reduced it
to 4K capabilities stay under 100 KB overhead for the allocator.

Anyway, pci_drv and pl11x_drv need more RAM quota now: 2M for pl11x_drv
and 1M for pci_drv.
2012-02-28 10:54:42 +01:00
Stefan Kalkowski 41eaff2cc6 Fiasco.OC: Re-use existing capability selectors
This is an interim fix for issue #112. This patch extends the
'Capability_allocator' class with the ability to register the global
ID of a Genode capability so that the ID gets associated with a
process-local kernel capability. Whenever a Genode capability gets
unmarshalled from an IPC message, the capability-allocator is asked,
with the global ID as key, whether the kernel-cap already exists.
This significantly reduces the waste of kernel-capability slots.

To circumvent problems of having one and the same ID for different kernel
objects, the following problems had to be solved:
* Replace pseudo IDs with unique ones from core's badge allocator
* When freeing a session object, free the global ID _after_ unmapping
  the kernel object, otherwise the global ID might get re-used in some
  process and the registry will find a valid but wrong capability
  for the ID

Because core aggregates all capabilities of all different processes, its
capability registry needs much more memory compared to a regular process.
By parametrizing capability allocators differently for core and non-core
processes, the global memory overhead for capability registries is kept
at a reasonable level.
2012-02-28 08:42:13 +01:00
Norman Feske 9e3ecade16 Replace Framebuffer::info by Framebuffer::mode
As a preliminary step for working on issue #11, this patch revisits the
'Framebuffer::info' RPC call. Instead of using C-style out paramters,
the new 'mode()' RPC call returns the mode information as an object of
type 'Mode'. Consequently, mode-specific functions such as
'bytes_per_pixel' have been moved to the new 'Framebuffer::Mode' class.
2012-01-25 13:27:47 +01:00
Norman Feske 08ce32215d Bump year in copyright headers to 2012 2012-01-03 15:35:05 +01:00
Genode Labs da4e1feaa5 Imported Genode release 11.11 2011-12-22 16:19:25 +01:00