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294 commits

Author SHA1 Message Date
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
Ben Gras
c4fb567bd5 . replace HZ by runtime system_hz (sysenv variable 'hz') 
. new flag PROC_FULLVM in table indicating process wants full address
   space (this is then created and managed by VM)
 2008-12-11 14:15:23 +00:00
Ben Gras
afef5e0711 . some flags to <minix/const.h> 
. add system_hz for runtime HZ value
 2008-12-11 14:12:52 +00:00
Ben Gras
a74132ec69 fix race condition that can trigger 'enqueue already ready process' panic. 2008-12-11 13:42:37 +00:00
Ben Gras
51fdce1d36 minor fixes 2008-11-19 14:10:33 +00:00
Ben Gras
c078ec0331 Basic VM and other minor improvements. 
Not complete, probably not fully debugged or optimized.
 2008-11-19 12:26:10 +00:00
Philip Homburg
a508e0a03c _function, function -> call_nr 2008-02-25 14:35:11 +00:00
Philip Homburg
73ea967b6c Keep track of error statistics, rate limit debug output, added SYS_MAPDMA. 2008-02-22 12:38:22 +00:00
Philip Homburg
992edfd558 Keep track of various statistics related to IPC and SYSTEM. 2008-02-22 12:36:46 +00:00
Philip Homburg
5996d1de58 Added do_mapdma. 2008-02-22 12:25:59 +00:00
Philip Homburg
f6872f8323 Added ipc_stats_target. 2008-02-22 12:25:44 +00:00
Philip Homburg
4a86b1fea5 Changes to debug output, mostly rate limiting. 2008-02-22 11:00:06 +00:00
Philip Homburg
3c2e122d6d Disabled code to set ipc_stats_target. 2008-02-22 10:58:27 +00:00
Philip Homburg
2679321ba0 Added do_mapdma. 2008-02-22 10:51:37 +00:00
Philip Homburg
594035f13c More verbose (optional) debug output for exceptions. 2008-02-22 10:43:18 +00:00