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308 Commits

Author SHA1 Message Date
Ben Gras
a236a39e33 .. 2009-06-08 07:33:42 +00:00
Ben Gras
de1b5e0076 cleanup, sanity checking 2009-06-08 06:08:11 +00:00
Ben Gras
782133423e allow empty senda 2009-06-08 04:39:26 +00:00
Ben Gras
9e72241374 minor cleanup 2009-06-08 04:30:16 +00:00
Ben Gras
ac86f5bb49 keep some processes mapped in always; direct message copying 
where possible (no buffering); no more explicit vm checkranges
in kernel; new allocator for vm using avl tree without needing
remapping
 2009-06-08 04:02:22 +00:00
Ben Gras
e2a7535c55 minor cleanup 2009-06-07 16:25:37 +00:00
Ben Gras
0702c826a2 pde cache check works 
no more silly vm checkranges
 2009-06-07 15:55:44 +00:00
Ben Gras
4dae6c4bbc my state. 
trying to get some memory optimisation (less pagetable reloading,
less tlb purging) features working smoothly.

to be documented when committing to trunk :)
 2009-06-06 23:27:10 +00:00
Ben Gras
9d56ac3fc9 only switch pagetable if necessary and it's different for copying messages 2009-06-03 15:28:13 +00:00
Ben Gras
eb2959a560 state 2009-06-03 11:22:49 +00:00
Ben Gras
f16eb59bbf further messing with page fault handling 2009-05-29 18:47:31 +00:00
Ben Gras
85881e9995 no vm_setbuf any more (kernel doesn't create its page table any more), 
no relocking field (locks not checked)
 2009-05-28 14:23:38 +00:00
Ben Gras
9b73964f6d beng work in progress, to be explained in a future commit message :). 2009-05-28 13:47:20 +00:00
Ben Gras
6579bb3656 copy of beng's working copy 2009-05-20 16:54:58 +00:00
Ben Gras
bdab3c4cfb Library call for cpu features; make kernel and vm use this to query cpu 
features (specifically: 4MB pages and TLB global bit).  Only enable
these features in CR4 if available. 4MB pages to be used in the near
future.
 2009-05-15 17:07:36 +00:00
Arun Thomas
db4faccbf9 -Installation info is on the wiki now, so remove setup guides and update 
README.
-Remove obsolete FAT partitioning utility.
-Update startup banner.
 2009-05-14 15:54:02 +00:00
David van Moolenbroek
c2aef85eda Clear trace bit for child on fork. 
Without this, a forking single-stepped process will have its child
die from a TRAP signal right away.
 2009-05-13 21:58:10 +00:00
Ben Gras
e3ca89c0be more sanity checking. sanity checking disabled by default. 
give every process a full pagetable by default now.

first step to disabling kernel page table code (processes
might not have page tables -> no address translation).
 2009-05-12 11:35:01 +00:00
David van Moolenbroek
4af032bbfe Kernel interrupt hook management fixes: 
- properly assign unique hook IDs
- after hook removal, remove hook-specific interrupt disable flag
 2009-05-07 14:52:07 +00:00
Ben Gras
bb23344283 spurious debug 2009-04-27 16:11:38 +00:00
Ben Gras
ef8a741301 set global flag for kernel pages, so tlb entries for kernel aren't thrown 
away on cr3 reload. minor optimization.
 2009-04-23 15:11:16 +00:00
Ben Gras
e0f3a5acf1 - enable ipc warnings by default 
- ipc checking code in kernel didn't properly catch the
   sendrec() to self case; added special case check
 - triggered by PM using stock panic() - needs its own _exit()

reported by Joren l'Ami.
 2009-04-17 13:46:37 +00:00
Ben Gras
9647fbc94e moved type and constants for random data to include file; 
added consistency check in random; added source of randomness
internal to random using timing; only retrieve random bins that are full.
 2009-04-02 15:24:44 +00:00
Ben Gras
b560a36b20 trace fix contributed by Joren l'Ami 2009-04-02 11:38:23 +00:00
Ben Gras
6ac0338584 Don't declare the cprof buf if CPROFILE isn't on. 2009-02-06 16:31:28 +00:00
Ben Gras
6e86e6706d fix compiler warning; missing memory range check 2009-02-05 13:00:03 +00:00
Ben Gras
113932905f disable interrupts if necessary in kernel debug code to dump all process 
stacks.
 2009-01-29 15:13:54 +00:00
Ben Gras
c628f24bc2 moved stacktrace to sysctl, as vmctl is very privileged so can't 
be used outside VM. IS code cleanup. added stacktrace feature to IS.
 2009-01-27 12:54:33 +00:00
Ben Gras
3cc092ff06 . new kernel call sysctl for generic unprivileged system operations; 
now used for printing diagnostic messages through the kernel message
   buffer. this lets processes print diagnostics without sending messages
   to tty and log directly, simplifying the message protocol a lot and
   reducing difficulties with deadlocks and other situations in which
   diagnostics are blackholed (e.g. grants don't work). this makes
   DIAGNOSTICS(_S), ASYN_DIAGNOSTICS and DIAG_REPL obsolete, although tty
   and log still accept the codes for 'old' binaries. This also simplifies
   diagnostics in several servers and drivers - only tty needs its own
   kputc() now.
 . simplifications in vfs, and some effort to get the vnode references
   right (consistent) even during shutdown. m_mounted_on is now NULL
   for root filesystems (!) (the original and new root), a less awkward
   special case than 'm_mounted_on == m_root_node'. root now has exactly
   one reference, to root, if no files are open, just like all other
   filesystems. m_driver_e is unused.
 2009-01-26 17:43:59 +00:00
Ben Gras
b784e88026 prototype 2009-01-22 17:09:45 +00:00
Ben Gras
0f41416100 minor cleanup, extra check 2009-01-20 15:47:00 +00:00
Ben Gras
ef2867de41 don't print if we're already printing to serial. 2009-01-14 08:54:17 +00:00
Ben Gras
b4934f0e12 debug twiddle. 2009-01-14 08:52:50 +00:00
Ben Gras
3ca00a926c don't produce kernel output if serial debug is on. 2009-01-11 23:47:03 +00:00
Ben Gras
d5f978411e use #include name for servarname 2009-01-11 23:45:29 +00:00
Ben Gras
cd54beeb30 cprofile not conditional 2009-01-09 21:45:27 +00:00
Ben Gras
c27008fbcc cprofile not conditional 2009-01-09 21:44:52 +00:00
Ben Gras
22d9444773 don't always time that 2009-01-09 20:58:35 +00:00
Ben Gras
7740d0379c no longer in kernel 2009-01-09 16:35:25 +00:00
Ben Gras
128a0508c0 timing measurement code out of kernel and into library 
(so other components can use it too)
 2009-01-09 16:15:15 +00:00
Ben Gras
23a158b361 don't check senda() buffer if size is 0. 2008-12-21 03:46:42 +00:00
Ben Gras
203eb54a4c make space for first code and data pages if so configured. 2008-12-19 15:46:29 +00:00
Ben Gras
b740ff055f if serial output is enabled in the boot monitor, on the first serial line, 
enable serial debug output in the kernel too.
 2008-12-19 13:21:42 +00:00
Ben Gras
f0000078c3 make kernel leave a page-sized gap in its code and data to not be 
mapped in if so configured.
 2008-12-18 14:30:55 +00:00
Ben Gras
5db1a042c2 stacktrace feature. 2008-12-11 15:33:43 +00:00
Ben Gras
9d096e014b . print kernel stacktrace unconditionally on panic 
. provide a panic() in the kernel for if a library function wants to panic
 2008-12-11 14:23:58 +00:00
Ben Gras
b61687fb1b . VM needs a higher priority than VFS, PM etc 
. introduce FULLVM flag: MEMORY and the initial MFS
   get their own full address spaces, making their stacks
   and heaps not preallocated (well, freed after VM has
   initialized it) and letting them allocate more dynamically.
   MEMORY in particular needs this to map in physical memory
   using its own page table, without having to allocate.
 2008-12-11 14:21:47 +00:00
Ben Gras
034b5c6042 PM_PROC_NR shouldn't be hardcoded as the caller. 2008-12-11 14:18:51 +00:00
Ben Gras
66b161238d function to increase process stack (pointer). used by VM to set up large, 
sparse, non-preallocated heap and stack.
 2008-12-11 14:17:45 +00:00
Ben Gras
e911d44a5c system image processes with full address space are allowed to have pagefaults. 2008-12-11 14:16:40 +00:00