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Rev Age Author Path Log message Diff
1431 6563 d 21 h jermar /kernel/trunk/generic/ Add missed_clock_ticks to CPU structure so that clock() can detect missed timer interrupts.
Architectures are required to support this in order to make time keeping accurate.
 
1429 6563 d 22 h jermar /kernel/trunk/generic/ Make ddi_physmem_map() accept address space area flags instead of writable switch.
Thus even these types of address space areas can turn caching on, if it is desired.
 
1428 6564 d 9 h palkovsky /kernel/trunk/generic/ Added 256K slab, so that AMD can boot (until ELF loader is fixed).
Added AS_AREA_RECV so that the caller can receive AS_AREA.
 
1425 6564 d 12 h jermar /kernel/trunk/generic/ Make address space backend data a union.  
1424 6564 d 14 h jermar /kernel/trunk/ Move the sharing functionality to address space area backends.
Add backend for continuous regions of physical memory.
Sharing for these areas works automagically now.
 
1423 6564 d 19 h jermar /kernel/trunk/ Update page fault handlers to distinguish between different access modes that had caused the page fault.  
1417 6566 d 11 h jermar /kernel/trunk/generic/ Modify as_area_share() to accept destination area flags bitmask from the sender
(i.e. the sender can limit access mode to the shared area for the recipient).
Modify IPC_M_AS_AREA_SEND code to support this. Arguments for sender: arg1=as_area,
arg2=size, arg3=flags_mask.

The mechanism seems to work, but the page fault handlers need to be altered to
distinguish between faults under different access modes.
 
1416 6566 d 22 h jermar /kernel/trunk/generic/ Make implementation of condition variables compliant with their definition.
Signal operation must become a no-op if there is no thread in the wait operation.
Remove condvar_trywait() which has no meaning after this change.
 
1415 6566 d 23 h jermar /kernel/trunk/generic/ Some renaming to prevent confusion.
as_lock -> inactive_as_with_asid_lock
as_t::refcount -> as_t::cpu_refcount
 
1413 6567 d 10 h jermar /kernel/trunk/generic/ Reimplement memory sharing. Currently, only
anonymous address space areas can be shared.
 
1411 6567 d 15 h jermar /kernel/trunk/ Modify the hierarchy of page fault handlers to pass access mode that caused the fault.
Architectures are required to pass either PF_ACCESS_READ, PF_ACCESS_WRITE or PF_ACCESS_EXEC
to as_page_fault(), depending on the cause of the fault.
 
1409 6568 d 9 h jermar /kernel/trunk/generic/ Some shared memory stuff (not completed).
Support for address space area backends.
Add ELF and anonymous memory backends.
 
1387 6570 d 17 h jermar /kernel/trunk/generic/ Add used_space_insert() and used_space_remove().
These are the alpha versions of functions that
will help to map used and unused portions of address
space areas. Currently unused, but many as_area operations
will be more efficient when the used space B+tree map
is used.
 
1382 6571 d 11 h decky /kernel/trunk/ make hardware memory mapping more generic  
1380 6571 d 13 h jermar /kernel/trunk/ Turn address space lock, address space area lock and
page_ht_lock into mutexes.
 
1375 6572 d 20 h jermar /kernel/trunk/generic/ Fix race in condition variables.  
1364 6574 d 18 h jermar /kernel/trunk/generic/ Modify ipc_wait_for_call() to support all of blocking, non-blocking and timeout operation.  
1359 6575 d 15 h jermar /kernel/trunk/generic/ Rename IPC_M_AS_SEND to IPC_M_AS_AREA_SEND.  
1358 6575 d 15 h jermar /kernel/trunk/generic/ Cleanup after removal of as_area_accept and as_area_send.  
1342 6575 d 23 h jermar /kernel/trunk/generic/ Improve comments.  
1329 6577 d 15 h palkovsky /kernel/trunk/generic/ Added support to IPC for simple page sharing.  
1327 6577 d 17 h decky /kernel/trunk/ split framebuffer initialization and sysinfo registration  
1321 6577 d 23 h vana /kernel/trunk/generic/ force return 0 if no valid pointer in sysinfo syscall  
1318 6578 d 12 h vana /kernel/trunk/ Sysinfo userspace interface  
1317 6578 d 13 h vana /kernel/trunk/ System information tools  
1315 6578 d 15 h jermar /kernel/trunk/generic/ Improve framebuffer speed by buffering blank line.  
1310 6579 d 19 h jermar /kernel/trunk/ Change coding style in vesa.c and do some minor changes.  
1306 6580 d 16 h jermar /kernel/trunk/generic/ Add SYS_AS_AREA_DESTROY syscall.
Add few error codes to errno.h
and change as.c accordingly.
 
1297 6584 d 17 h jermar /kernel/trunk/ Add SYS_CAP_GRANT and SYS_CAP_REVOKE syscalls.
Move SYS_PREEMPT_CONTROL to ddi.c.
Add some comments and fix some small issues.
 
1293 6586 d 17 h palkovsky /kernel/trunk/ Implemented mips memcpy (copy from gcc builtin memcpy).  
1288 6586 d 20 h jermar /kernel/trunk/ Complete implementation of copy_from_uspace() and copy_to_uspace()
for amd64 and ia32. Other architectures still compile and run,
but need to implement their own assembly-only memcpy(), memcpy_from_uspace(),
memcpy_to_uspace() and their failover parts. For these architectures
only dummy implementations are provided.
 
1284 6589 d 0 h palkovsky /kernel/trunk/generic/ Added commands for accessing ia32 portspace in irq top-half.  
1281 6589 d 10 h palkovsky /kernel/trunk/ Added means to make a simple action upon interrupt.  
1278 6589 d 14 h palkovsky /kernel/trunk/ Changed interrupt_control to preemption_control.  
1271 6589 d 21 h cejka /kernel/trunk/ All the *printf functions ported to kernel.
Comments updated.
Printf1 test uses snprintf to test printing to a string.
 
1264 6590 d 20 h jermar /kernel/trunk/generic/ Improve Doxygen-comments.  
1258 6592 d 10 h palkovsky /kernel/trunk/ Added support for IRQ notifiactions.
- seems to work correctly on ia32, amd64
- the mips kbd probably lowers interrupts when the char is read from
the port, we will have to find a way how to deal with it.
 
1253 6592 d 21 h jermar /kernel/trunk/generic/include/syscall/ Replace old name of SYS_IOSPACE_ENABLE with a new one.  
1251 6593 d 18 h jermar /kernel/trunk/ Fix BITS2BYTES macro to return 0 when passed 0 as argument.
Fix ia32 TSS segment granularity to be 0.
Fix ia32 and amd64 initial TSS limit to be 103.
Little textual changes here and there.
 
1239 6595 d 14 h jermar /kernel/trunk/generic/ Prevent race in as_area_send() by allowing the address space area to be
created with AS_AREA_ATTR_PARTIAL attribute.