c092540e39
eliminate enter_alloc -- use kalloc for everything
2011-09-13 13:14:52 -04:00
3682474f77
delete dead code
2011-08-21 21:14:29 -04:00
5f069dcf2f
Switch back to #define for PHYSTOP. Using the E820 to retrieve the memory map is too complicated (must be done in 16-bit real-mode, probably enlarged bootblock beyond 512 bytes, and a #define requires less explanation).
2011-08-16 20:23:17 -04:00
c3dcf47966
Clean up memlayout.h
...
Get rid of last instances of linear address and "la"
Get ready for detecting physical memory dynamically
2011-08-16 15:47:22 -04:00
a4b213cf49
Avoid "boot" in xv6
2011-08-15 20:11:13 -04:00
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
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
9aa0337dc1
Map kernel high
...
Very important to give qemu memory through PHYSTOP :(
2011-07-29 07:31:27 -04:00
417c37115e
more trivial cleanup
2011-01-11 13:51:40 -05:00
1a81e38b17
make new code like old code
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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
4587b35847
exec questions
2010-09-19 07:18:42 -04:00
23c3e52c2f
Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6
2010-08-31 19:21:52 -04:00
3597d5dc70
oops. last minute simplicifaction to kalloc().
2010-08-31 19:21:33 -04:00
5048762c7e
Page break kalloc.c
2010-08-31 17:52:03 -04:00
8d774afb2d
no more pminit, or ELF header at 0x10000
...
kinit() knows about end and PHYSTOP
map all of kernel read/write (rather than r/o instructions)
thanks, austin
2010-08-31 15:39:25 -04:00
7d7dc9331b
kalloc/kfree now only a page at a time
...
do not keep sorted contiguous free list
2010-08-31 12:54:47 -04:00
789b508d53
uptime() sys call for benchmarking
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increase PHYSTOP
2010-08-11 14:34:45 -04:00
c4cc10da7e
fix corner cases in exec of ELF
...
put an invalid page below the stack
have fork() handle invalid pages
2010-08-06 11:12:18 -04:00
af03ab142d
a few nits
...
passes all tests on two-processor smp
2010-07-23 12:52:50 -04:00
74c82bc158
nits
2010-07-02 17:45:37 -04:00
40889627ba
Initial version of single-cpu xv6 with page tables
2010-07-02 14:51:53 -04:00
f9a06440ab
rearrangements and cleanup for text
2009-07-11 19:26:01 -07:00
34295f461a
group locks into structs they protect.
...
few naming nits.
2009-05-31 05:12:21 +00:00
558ab49f13
delete unnecessary #include lines
2007-08-27 23:26:33 +00:00
e0240674f5
make kfree loop same as kalloc
2007-08-27 12:50:36 +00:00
902b13f5d6
simplify ide queuing
...
nits in comments
2007-08-24 19:32:36 +00:00
4bc5056c19
formatting, simplify
2007-08-14 19:05:48 +00:00
3d145283a2
tweak kalloc
2007-08-10 17:02:36 +00:00
b6095304b7
Make cp a magic symbol.
2007-08-10 16:37:27 +00:00
8e1d1ec934
some comment changes
2006-09-08 14:36:44 +00:00
31085bb416
more comments
2006-09-07 14:12:30 +00:00
d4c64e5d43
writeable => writable
2006-09-06 18:06:04 +00:00
f552738889
no /* */ comments
2006-09-06 17:50:20 +00:00
9e9bcaf143
standardize various * conventions
2006-09-06 17:27:19 +00:00
82537b7156
nits
2006-09-04 11:52:36 +00:00
2aa4c3bc29
complain if no disk 1
...
lots of cleanup
2006-08-30 18:55:06 +00:00
5be0039ce9
interrupts could be recursive since lapic_eoi() called before rti
...
so fast interrupts overflow the kernel stack
fix: cli() before lapic_eoi()
2006-08-10 22:08:14 +00:00
32630628a9
open()
2006-07-29 09:35:02 +00:00
b5ee516575
add uint and standardize on typedefs instead of unsigned
2006-07-17 01:52:13 +00:00
c54c79267f
nitpicks
2006-07-17 01:25:22 +00:00
84d79573da
more idiomatic c
2006-07-16 16:05:37 +00:00
8148b6ee53
i think my cmpxchg use was wrong in acquire
...
nesting cli/sti: release shouldn't always enable interrupts
separate setup of lapic from starting of other cpus, so cpu() works earlier
flag to disable locking in console output
make locks work even when curproc==0
(still crashes in clock interrupt)
2006-07-12 11:15:38 +00:00
4e8f237be8
no more big kernel lock
...
succeeds at usertests.c pipe test
2006-07-12 01:48:35 +00:00
b548df152b
pre-empt both user and kernel, in clock interrupt
...
usertest.c tests pre-emption
kill()
2006-07-11 17:39:45 +00:00
8b4e2a08fe
swtch saves callee-saved registers
...
swtch idles on per-CPU stack, not on calling process's stack
fix pipe bugs
usertest.c tests pipes, fork, exit, close
2006-07-01 21:26:01 +00:00
55e95b16db
import
2006-06-12 15:22:12 +00:00
Robert Morris
Frans Kaashoek
Frans Kaashoek
Frans Kaashoek
Russ Cox
Austin Clements
Robert Morris
Frans Kaashoek
Frans Kaashoek
rsc
rtm
kaashoek