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Author SHA1 Message Date
Robert Morris
5053dd6a6d avoid deadlock by calling begin_trans() before locking any inodes 2011-08-15 12:44:20 -04:00
Frans Kaashoek
c95ce31c59 Oops 2011-08-12 12:02:17 -04:00
Robert Morris
e0d1ba0d74 Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6 2011-08-12 09:26:23 -04:00
Robert Morris
2e59046362 log write() data 
usertest for big write()s
push begin_trans/commit_trans down into syscalls
 2011-08-12 09:25:39 -04:00
Frans Kaashoek
e577a62f0d Some comments 2011-08-12 07:31:52 -04:00
Frans Kaashoek
bd71a45046 Make AP processors boot using bootpgdir 
Remove device mapping from bootpgdir
Remove unnecessary vmenable
Set CPUS back to 2 in Makefile
Passes all usertests
 2011-08-11 12:25:10 -04:00
Frans Kaashoek
673b739d31 One more low address 2011-08-09 23:22:48 -04:00
Frans Kaashoek
8a9933a200 Tiny bit of cleanup 2011-08-09 21:56:43 -04:00
Frans Kaashoek
22c73411ca Shorten boot assembly 2011-08-09 21:51:17 -04:00
Frans Kaashoek
5460667c9c x 2011-08-09 21:49:13 -04:00
Frans Kaashoek
832af025a3 Remove jmpkstack 2011-08-09 21:47:40 -04:00
Frans Kaashoek
66ba8079c7 Use static page table for boot, mapping first 4Mbyte; no more segment trick 
Allocate proper kernel page table immediately in main using boot allocator
Remove pginit
Simplify address space layout a tiny bit
More to come (e.g., superpages to simplify static table)
 2011-08-09 21:37:35 -04:00
Frans Kaashoek
3a03810643 Use kernel virtual addresses for BIOS memory, etc. 2011-08-09 21:33:59 -04:00
Frans Kaashoek
b23d8329e7 Allow gas to use / as divide (instead of comment) 
Maybe not necessary, but don't want to waste time figuring this out again
 2011-08-09 16:09:15 -04:00
Frans Kaashoek
a56c8d609b One definition of several macros and constants 2011-08-08 13:30:08 -04:00
Frans Kaashoek
11b7438b10 Speedup sbrk tst a bit (forking 100Mbyte processes is slow) 2011-08-08 09:20:29 -04:00
Frans Kaashoek
6479766334 Adjust sbrk test for large user address spaces 
All tests pass
 2011-08-07 23:03:48 -04:00
Frans Kaashoek
67d4254d15 oops 2011-08-07 12:30:34 -04:00
Frans Kaashoek
547c28fc1e Don't map IO space in the user part of the address space 
Passes all tests now (but need to update usertests to allow for more than 640k)
 2011-07-31 21:27:02 -04:00
Frans Kaashoek
9aa0337dc1 Map kernel high 
Very important to give qemu memory through PHYSTOP :(
 2011-07-29 07:31:27 -04:00
Frans Kaashoek
dccb915282 Merge commit 'origin/master' into page 2011-07-27 20:49:45 -04:00
Frans Kaashoek
13a96baefc Dirt simple logging 
Passes usertests and stressfs
Seems to recover correctly in a number of simple cases
 2011-07-27 20:35:46 -04:00
Austin Clements
97657d703f Add -fno-omit-frame-pointer to compile flags. 
At some point between gcc 4.4 and 4.6, omitting the frame pointer
became default if any -O is specified.  getcallerpcs relies on the
frame pointer, so bring it back.
 2011-06-24 14:22:19 -04:00
Nickolai Zeldovich
96b7da5f03 do not run past the end of the disk! 
[ cherry-picked de6075ff0978108daea1d658425bcb37663a98a0 ]

Conflicts:

	fs.c
 2011-06-24 05:26:57 -04:00
Frans Kaashoek
f70ef994dc Russ's fix for panic remap 2011-04-28 08:01:36 -04:00
Russ Cox
ae603ff5e7 rebuild xv6-rev5.tar.gz 
does not affect line numbers
 2011-02-28 09:32:54 -05:00
Russ Cox
c5f5387351 fixes from Peter Froehlich 2011-02-28 09:32:20 -05:00
Russ Cox
a6cd7509c4 web: rev5 2011-02-19 21:21:49 -05:00
Russ Cox
688b5c03dd updated book pdfs 2011-02-19 21:19:58 -05:00
Russ Cox
cf4b1ad90b xv6: formatting, cleanup, rev5 (take 2) 2011-02-19 21:17:55 -05:00
Russ Cox
9c4fe7ba10 xv6: formatting, cleanup, rev5 2011-02-19 21:16:54 -05:00
Russ Cox
97b21b5838 xv6: refresh from 2010 page 2011-02-19 10:36:14 -05:00
Russ Cox
08864affaa xv6: link to xv6-rev4 2011-02-19 10:23:19 -05:00
Russ Cox
4fa8614db0 missing file memide.c 2011-01-11 13:54:23 -05:00
Russ Cox
417c37115e more trivial cleanup 2011-01-11 13:51:40 -05:00
Russ Cox
89bfdd4db1 multiboot support and memory-only (no disk) kernel 2011-01-11 13:27:45 -05:00
Russ Cox
af6a6a4775 mp: do not panic on surprising hw 2011-01-11 13:16:28 -05:00
Russ Cox
1a81e38b17 make new code like old code 
Variable declarations at top of function,
separate from initialization.

Use == 0 instead of ! for checking pointers.

Consistent spacing around {, *, casts.

Declare 0-parameter functions as (void) not ().

Integer valued functions return -1 on failure, 0 on success.
 2011-01-11 13:01:13 -05:00
Russ Cox
240679608c mkfs: avoid clash with system struct stat 2011-01-10 10:43:40 -05:00
Russ Cox
e92fd6142d mkfs: avoid out of bounds access to sb in wsect 2011-01-02 17:59:57 -05:00
Robert Morris
2ea6c764c3 even more fabulous exec 2010-09-29 14:12:26 -04:00
Robert Morris
06feabecee check exec() arg length 
fix double iunlockput
 2010-09-27 16:17:57 -04:00
Robert Morris
4655d42e3b copyout() copies data to a va in a pagetable, for exec() &c 
usertest that passes too many arguments, break exec
 2010-09-27 16:14:33 -04:00
Robert Morris
a9183883b8 map kernel instructions r/o 2010-09-20 06:00:22 -04:00
Robert Morris
26d11ee8dc Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6 2010-09-19 13:48:22 -04:00
Robert Morris
05d66b0629 my comment is wrong, exec handles BSS fine 2010-09-19 13:47:52 -04:00
Robert Morris
4587b35847 exec questions 2010-09-19 07:18:42 -04:00
Austin Clements
4c274cef74 Simplify boot loader by removing some JOS'isms 2010-09-15 16:15:07 -04:00
Robert Morris
faad047ab2 change some comments, maybe more informative 
delete most comments from bootother.S (since copy of bootasm.S)
ksegment() -> seginit()
move more stuff from main() to mainc()
 2010-09-13 15:34:44 -04:00
Austin Clements
124fe7e457 Rev 4 2010-09-03 15:47:28 -04:00