* Don't set the VMArea's memory type in arch_vm_set_memory_type(), but let the
callers do that.
* vm_set_area_memory_type(): Does nothing, if the memory type doesn't change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36573 a95241bf-73f2-0310-859d-f6bbb57e9c96
of consistency.
* Moved the B_OVERCOMMITTING_AREA flag from B_KERNEL_AREA_FLAGS to
B_USER_AREA_FLAGS, since we really allow it to be passed from userland.
* Most VM syscalls check the provided protection against B_USER_AREA_FLAGS
instead of B_USER_PROTECTION, now. This way they allow for
B_OVERCOMMITTING_AREA as well.
* _user_map_file(), _user_set_memory_protection(): Check the protection like
the other syscalls do and use fix_protection() instead of doing that
manually.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36572 a95241bf-73f2-0310-859d-f6bbb57e9c96
continuing to run. This must not happen since the thread is the boot CPU's
idle thread performing the early kernel initialization (before the scheduler
is started).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36560 a95241bf-73f2-0310-859d-f6bbb57e9c96
fixes the problem that the CPU initiating the call could make the next call
and reset sCpuRendezvous2 before the other CPUs have returned from their
smp_cpu_rendezvous(). Probably virtually impossible on real hardware, but I
could almost reliably reproduce it with qemu -smp 2 (would hang the late boot
process without ability to enter KDL).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36559 a95241bf-73f2-0310-859d-f6bbb57e9c96
boot CPU wait until all other CPUs are ready to wait. This solves a
theoretical problem in main(): The boot CPU could run fully through the early
initialization and reset sCpuRendezvous2 before the other CPUs left
smp_cpu_rendezvous(). It's very unlikely on real hardware that the non-boot
CPUs are so much slower, but it might be a concern in emulation.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36558 a95241bf-73f2-0310-859d-f6bbb57e9c96
kernel from committing memory for all read-only segments until we're done
relocating. This allows Haiku to boot on machines with less RAM and swap
disabled. At least in qemu I could boot with 100 MB and start WebPositive.
Probably fixed#5822.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36552 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Commit(): Unreserve memory when asked to shrink the commitment.
* Fault(): The whole logic is flawed, since this is always called by
vm_soft_fault(), even, if the page is finally mapped from a lower cache.
Now we do at least limit our commitment to (page_count + 1) * B_PAGE_SIZE
instead of always reserving memory for another page.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36551 a95241bf-73f2-0310-859d-f6bbb57e9c96
maps. The new cache will be created in over-committing mode.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36550 a95241bf-73f2-0310-859d-f6bbb57e9c96
scheduler. This avoids the need to use the send_signal_etc() work-around for
resume_thread() during the early kernel initialization. Might fix#5851.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36530 a95241bf-73f2-0310-859d-f6bbb57e9c96
supporting ID array (just that it only contains one entry).
* Fixed missing malloc() result check in embedded_controller_init_driver().
* Style fixes.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36529 a95241bf-73f2-0310-859d-f6bbb57e9c96
already initialized in syslog_init(), if the debug syslog feature is enabled.
Since the area would never be created, the pointer becomes invalid, however,
and could cause a double fault on entering KDL.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36528 a95241bf-73f2-0310-859d-f6bbb57e9c96
precondition for calling the function it read/write accessed the fAreaHint
attribute in a non-atomic manner. I.e. if executed concurrently by two
threads of the same team one could return the wrong area. The most likely
problem could be caused in vm_soft_fault(), leading to pages being added to
the wrong caches.
The bug itself is inherited from NewOS, but is triggered way more likely
since the page daemon unmaps inactive pages (r35485). Probably fixes#5413.
Might also fix the sporadically occurring crashes/asserts in the hoard
allocator -- at least inactive pages being replaced by zeroed ones would be
an excellent explanation.
[Thanks to Matt for providing remote debug access to his machine.]
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36523 a95241bf-73f2-0310-859d-f6bbb57e9c96
vm_page_schedule_write_page_range() to prevent more memory pressure.
* While it seems to help a bit, it doesn't solve the problem of bug #5777.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36519 a95241bf-73f2-0310-859d-f6bbb57e9c96
it is non-NULL first.
* syslog_init_post_vm(): Make sure the area for the debug syslog could actually
be created and fail otherwise.
* syslog_init_post_threads(): Fixed the cleanup on error. In case of a debug
syslog we need to delete the respective area instead of free()ing the
memory.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36497 a95241bf-73f2-0310-859d-f6bbb57e9c96
free respective free and cached pages.
* Removed the unused vm_page_allocate_page_run_no_base().
* vm_page_allocate_page_run() (and allocate_page_run()):
- Use vm_page_reserve_pages() instead of vm_page_try_reserve_pages(), i.e.
wait until the reservation succeeds.
- Now we iterates two times through the pages to find a suitable page run. In
the first iteration it only looks for free/clear pages, in the second
iteration it also considers cached pages. This increases the chance of the
function to succeed, when a lot of caching is going on.
This reduces the amount of memory required to use the IOCache when booting
off the anyboot Live CD to around 160 MB in qemu. It also seems to work with
128 MB, but the syslog indicates that some memory allocations fail, which
is not exactly inspiring confidence.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36489 a95241bf-73f2-0310-859d-f6bbb57e9c96
before locking the address space. That gives us a bit more flexibility in
vm_page_allocate_page_run().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36486 a95241bf-73f2-0310-859d-f6bbb57e9c96
caching (similar to the file cache) instead of contiguous areas. This is
probably a little bit slower, but integrates better with the VM -- the
caching doesn't increase memory pressure and the least recently used pages
will automatically be recycled when needed.
There are still memory allocation issues on machines with little memory. The
USB stack apparently tries to allocate a rather big chunk of contiguous
memory, which fails when all not otherwise bound memory is used for caches,
since the VM functions for allocating contiguous memory consider only free
pages ATM.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36458 a95241bf-73f2-0310-859d-f6bbb57e9c96
as a drop-in replacement for IOScheduler, processing IORequests synchronously
in FIFO order. It stores cache lines of user-defined size. Currently for each
cache line an area of contiguous memory is used, which is not optimal.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36436 a95241bf-73f2-0310-859d-f6bbb57e9c96
loop causes the function to return before setting the _numEntries. The
overflow case is checked at the end of the function anyway, so we can just
break out.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36425 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Removed irq_routing struct from ACPI.h to where it is used. Might be able to use acrestype.h instead of duplication.
* Disable old embedded controller and remove it from image.
* Move embedded controller code to busmanager module.
* Remove (some) code duplication
Should work as before, but is now initialized right after the bus manager. Can probably remove further code duplication.
I hope I've done it correctly, feedback is most welcome.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36420 a95241bf-73f2-0310-859d-f6bbb57e9c96
respective constants.
* compare_image_boot(): Compare volume names case insensitively.
* DiskBootMethod::IsBootDevice(): For BOOT_METHOD_CD only accept devices with
removable media.
* DiskBootMethod::IsBootPartition(): Added special recognition for anyboot
CDs. Since their partition types aren't kPartitionTypeDataSession,
compare_cd_boot() didn't prefer them and it was more or less random whether
it was chosen when other Haiku installations where available. Moreover
selecting the CD in the boot loader menu would cause the kernel not to find
it.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36403 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Moved IOScheduler::_IOCallbackWrapper() to IOCallback::WrapperFunction().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36394 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Changed the semantics of VMCache::HasPage(). It was interpreted
inconsistently by the derived classes. Now it returns whether the backing
store can provide the page (via Read()). The default implementation returns
false. VNodeCache::HasPage() only returns true, if the given offset is
within the cache (i.e. file) bounds. This prevents vm_soft_fault() from
adding clean pages to vnode caches on faults beyond the file bounds.
Probably fixes#5473 -- at least mmap_resize_test behaves correctly, now.
* Removed redundant HasPage() and Fault() overrides in VMCache derived
classes.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36374 a95241bf-73f2-0310-859d-f6bbb57e9c96
swap space when the cache shrinks. Currently the implementation stil leaks
swap space of busy pages.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36373 a95241bf-73f2-0310-859d-f6bbb57e9c96
the CPU info, if x86_exit_user_debug_at_kernel_entry() was executed before,
i.e. if the debug exception occurred in userlands. In all other cases we need
to read the current register values. Fixes#5742, a regression introduced in
r35951.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36340 a95241bf-73f2-0310-859d-f6bbb57e9c96
- Reimplemented mutex to use the _kern_mutex*() syscalls.
- The initializer functions cannot fail anymore -- changed their return type
to void.
- Changed the initializer function semantics to not copy the name by default
anymore (as in the kernel). Also added *_etc() versions of them that take an
additional flags.
- Added static initializer macros.
- Made the mutex (and thus recursive_lock) lock functions non-interruptable.
- Got rid of the "lazy" version. They are no longer needed, since the
initialization of the standard types can be done statically and cannot fail.
* Adjusted libroot, runtime loader, and other code using the private libroot
locking primitives to the new semantics.
* pthreads mutexes and condition variables:
- Reimplemented using the _kern_mutex*() syscalls.
- Consistently use POSIX error codes.
- Fixed some not quite POSIX compliant behavior.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36323 a95241bf-73f2-0310-859d-f6bbb57e9c96
* user_mutex_unlock_locked(): Set or clear the locked flag depending on whether
we wake up a waiter.
* _user_mutex_switch_lock(): The syscall cannot be restartable.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36319 a95241bf-73f2-0310-859d-f6bbb57e9c96
it failed...).
* Moved IRQ table reading much earlier (before starting to program the I/O
APIC), though it currently fails, possibly because the device manager isn't
up yet, and there is no embedded controller driver.
* The kernel now enables I/O APICs by default, but the boot loader disables
them - you can now enable them using the safe mode menu, but it currently
won't have any (positive) effect.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36293 a95241bf-73f2-0310-859d-f6bbb57e9c96
can safely be used.
* Since using the I/O APIC is disabled by default, I've removed the "return"
that prevented its use when enabled. Let's see if it already does anything.
* Adapted other arch_int.cpp with a bit of cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36290 a95241bf-73f2-0310-859d-f6bbb57e9c96
double/deadlock when we delete heap areas because of other area deletions.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36284 a95241bf-73f2-0310-859d-f6bbb57e9c96
The O_CLOEXEC open mode wasn't actually set in the close-on-exec bitmap causing
all files opened with O_CLOEXEC (like done in the storage kit classes) to still
be inherited. This caused for example to be unable to unmount volumes when
opening apps while Tracker touched some files (i.e. copying some large files)
since these apps would inherit the file descriptor and therefore keep the
volume busy.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36273 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Add file descriptor and IO context tracing.
* Some minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36272 a95241bf-73f2-0310-859d-f6bbb57e9c96
via exit() (the calling thread will drop into the debugger instead).
* The DebugServer now uses this flag by default.
* Added TODO comment: the default debugger should already be able to set a flag
like this in order to close a race condition between dropping a thread into
the debugger and setting the flag.
* Cleaned up the debug_server sources a bit.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36265 a95241bf-73f2-0310-859d-f6bbb57e9c96
mapped page.
* debug_{mem,strl}cpy():
- Added "team" parameter for specifying the address space the address are
to be interpreted in.
- When the standard memcpy() (with fault handler) fails, fall back to
vm_debug_copy_page_memory().
* Added debug_is_debugged_team(): Predicate returning true, if the supplied
team_id refers to the same team debug_get_debugged_thread() belongs to.
* Added DebuggedThreadSetter class for scope-based debug_set_debugged_thread().
Made use of it in several debugger functions.
* print_demangled_call() (x86): Fixed unsafe memory access.
Allows KDL stack traces to work correctly again, even if the page daemon has
already unmapped the concerned pages.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36230 a95241bf-73f2-0310-859d-f6bbb57e9c96
interrupts (MSI).
* Add the remaining IDT entries and redirection functions in the interrupt code.
* Make the PIC end_of_interrupt() return a result to indicate whether the vector
was handled by this PIC. If it isn't we now issue a apic_end_of_interrupt()
in the assumption of apic local interrupt, MSI or IPI. This also removes
the need for the gUsingIOAPIC global and doing manual apic_end_of_interrupt()
calls in the SMP and timer code.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36221 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Removed rounding up the end address to page alignment. It's not necessary
and could cause an overflow.
* Fixed possible infinite loop triggered by a rare race condition: When two
threads of a team were accessing the same unmapped page at the same time
each would trigger a page fault. One thread would map the page again, the
second would wait until the first one was done and update the page
protection (unnecessarily but harmlessly). If the first thread accessed the
page again at an unfortunate time, it would implicitly change the
accessed/dirty flags of the page's PTE, which was a situation the loop in
Protect() didn't consider and thus run forever.
Seen the problem twice today in form of an app server freeze.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36197 a95241bf-73f2-0310-859d-f6bbb57e9c96
pass stricter allocation flags to VMAddressSpace::{Remove,Delete}Area() or
could deadlock otherwise.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36188 a95241bf-73f2-0310-859d-f6bbb57e9c96
other places where previously the same functionality was duplicated. Also
seperated the header which was originally arch_smp.h into apic.h and arch_smp.h
again as some of it is MP and not actually APIC.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36182 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Implemented a tiny bit more sophisticated version of
estimate_max_scheduling_latency() that uses a syscall that lets the scheduler
decide.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36170 a95241bf-73f2-0310-859d-f6bbb57e9c96
locks.
* Added syscalls for a new kind of mutex. A mutex consists only of an int32 and
doesn't require any kernel resources. So it's initialization cannot fail
(it consists only of setting the mutex value to 0). An uncontended lock or
unlock operation can basically consist of an atomic_*() in userland. The
syscalls (when the mutex is contended) are a bit more expensive than semaphore
operations, though.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36158 a95241bf-73f2-0310-859d-f6bbb57e9c96
* Added new thread flag THREAD_FLAGS_ALWAYS_RESTART_SYSCALL. If set, it forces
syscall restart even when a signal handler without SA_RESTART was invoked.
* Fixed sigwait(): If one of requested signals wasn't already pending it would
never wake up. Also, the syscall always needs to be restarted, if interrupted
by another signal.
* Renamed a bunch of the POSIX signal function implementations which did return
an error code directly (instead via errno). Added correct POSIX functions
where needed.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36054 a95241bf-73f2-0310-859d-f6bbb57e9c96
doesn't mention the expected set_alarm() behavior. Tests under BeOS R5 Bone
crash the system in either case, though, so I guess we're free to go with the
expected POSIX behavior.
This make detection of hanging tests in the Open POSIX Test Suite work.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36046 a95241bf-73f2-0310-859d-f6bbb57e9c96
return it.
* lock_memory_etc(): On error the VMAreaWiredRange object could be leaked.
* [un]lock_memory_etc(): Call VMArea::Unwire() with the cache locked and
explicitly delete the range object after unlocking the cache to avoid
potential deadlocks.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36035 a95241bf-73f2-0310-859d-f6bbb57e9c96
Since the requirement is that the area's top cache is locked, allocating
memory isn't allowed.
* lock_memory_etc(): Create the VMAreaWiredRange object explicitly before
locking the area's top cache.
Fixes#5680 (deadlocks when using the slab as malloc() backend).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36033 a95241bf-73f2-0310-859d-f6bbb57e9c96
* _user_map_file(), _user_unmap_memory(): Verify that the address (if given) is
page aligned.
* Reworked memory locking (wiring):
- VMArea does now have a list of wired memory ranges and supports waiting for
a range to be removed.
- vm_soft_fault():
- Added "wirePage" parameter that, if given, makes the function wire the
page and return it.
- Added "wiredRange" parameter (for calls from lock_memory_etc()) and made
sure we never unmap wired pages. This could e.g. happen when a page from a
lower cache was read-mapped and a write fault occurred. Now in such a
situation the function waits for the page to be unwired and restarts.
- All functions that manipulate areas in a way that could affect wired ranges
do now either require the caller to make sure there are no wired ranges in
the way or do that themselves. Added a few wait_if_*_is_wired() helper
functions for that purpose.
- lock_memory_etc():
- Does now also work correctly when the range spans more than one area.
- Adds VMAreaWiredRanges to the affected VMAreas and retains an address
space reference (so that the address space won't be deleted as long as a
wired range exists).
- Resolved TODO: The area's caches are now locked when
increment_page_wired_count() is called.
- Resolved TODO: The race condition due to missing locking after looking up
the page mapping is now prevented. We hold the cache locks (in case the
page is already mapped) and the new vm_soft_fault() parameter allows us
to get the page wired.
- unlock_memory_etc(): Changes symmetrical to those in lock_memory_etc() and
resolved all TODOs.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36030 a95241bf-73f2-0310-859d-f6bbb57e9c96
syslog in the current KDL session. Added option "-k" for the former behavior.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35976 a95241bf-73f2-0310-859d-f6bbb57e9c96
Added fields for temporary storage of the debug registers dr6 and dr7 to the
arch_cpu_info structure. The actual registers are stored at the beginning of
x86_exit_user_debug_at_kernel_entry() and read in
x86_handle_debug_exception().
The problem was that x86_exit_user_debug_at_kernel_entry() itself overwrote
dr7 and, if kernel breakpoints were enabled, dr6 could be overwritten anytime
after. So x86_handle_debug_exception() would find incorrect values in the
registers (definitely in dr7) and thus interpret the detected debug condition
incorrectly. Usually watchpoints were recognized as breakpoints.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35951 a95241bf-73f2-0310-859d-f6bbb57e9c96
occurred. This fixes the automatic syscall restart case (would wait forever)
and aligns the behavior with poll().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35948 a95241bf-73f2-0310-859d-f6bbb57e9c96
arch_debug_stack_trace() through debug_call_with_fault_handler(), since the
one in the CPU structure can only be used for debug_{strl,mem}cpy(), which do
not potentially have nested debug_call_with_fault_handler() calls.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35920 a95241bf-73f2-0310-859d-f6bbb57e9c96
block was freshly allocated. A block returned by _GetUnusedBlock() already
has current_data and we would leak it before.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35918 a95241bf-73f2-0310-859d-f6bbb57e9c96
