Austin Clements
052e18485d
Skip missing page directories in deallocuvm
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Previously, deallocuvm scanned from 0 to KERNBASE in one page
increments, which had a noticable effect on boot time. Now it skips
over missing page directories.
2011-09-01 21:29:09 -04:00
Robert Morris
1eadf4a8fc
Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6
2011-09-01 13:26:03 -04:00
Robert Morris
371ab7fa96
inaccessible page under the user stack page, to help exec deal w/ too-large args
2011-09-01 13:25:34 -04:00
Frans Kaashoek
6bb9221395
Fix layout
2011-09-01 13:18:02 -04:00
Frans Kaashoek
e04329aae8
Have one definition of kernel stack size
2011-09-01 12:18:43 -04:00
Robert Morris
62e3b8a92c
Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6
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Conflicts:
vm.c
2011-09-01 12:03:49 -04:00
Robert Morris
5a23692444
fix usertests to correctly test what happens when you call
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exec() with arguments that don't fit on a single page.
2011-09-01 12:02:49 -04:00
Austin Clements
d0f3efca65
Use stosl in memset; makes boot time bearable
2011-09-01 10:41:27 -04:00
Frans Kaashoek
e25b74ca80
Fix layout issues for printed version
2011-09-01 10:25:20 -04:00
Robert Morris
15997d5849
move the kernel to 0x80000000
2011-08-31 09:48:52 -04:00
Robert Morris
5c292b3d71
simplify the end of entry.S
2011-08-31 05:38:05 -04:00
Robert Morris
5e08357827
enterpgdir -> entrypgdir
2011-08-30 20:50:19 -04:00
Frans Kaashoek
1ddfbbb194
Revert "Introduce and use sleeplocks instead of BUSY flags"
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My changes have a race with re-used bufs and the code doesn't seem to get shorter
Keep the changes that fixed ip->off race
This reverts commit 3a5fa7ed90
2011-08-29 17:18:40 -04:00
Austin Clements
22f7db5336
Renumber I_VALID since I_BUSY is gone
2011-08-29 16:14:44 -04:00
Austin Clements
920b7b44b5
dir-locals.el to set style in Emacs
2011-08-29 16:12:17 -04:00
Austin Clements
a7061b4f97
Style nits; indentation and tabs
2011-08-29 16:12:01 -04:00
Frans Kaashoek
16f205b5c9
Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6
2011-08-26 10:10:37 -04:00
Frans Kaashoek
3a5fa7ed90
Introduce and use sleeplocks instead of BUSY flags
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Remove I_BUSY, B_BUSY, and intrans defs and usages
One spinlock per buf to avoid ugly loop in bget
fix race in filewrite (don't update f->off after releasing lock)
2011-08-26 10:08:29 -04:00
Robert Morris
41911afa45
segment register -> segment descriptor
2011-08-26 06:47:13 -04:00
Frans Kaashoek
8a9b6dbd44
Make cross reference with text work
2011-08-25 14:39:09 -04:00
Frans Kaashoek
6f2327580f
Eliminate USERTOP; no use for it.
2011-08-24 10:24:40 -04:00
Frans Kaashoek
194f8bf739
A comment
2011-08-22 20:07:18 -04:00
Frans Kaashoek
d10d324e79
Remove sys_init syscall
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Invoke initlog from forkret on first user process
2011-08-22 20:05:15 -04:00
Frans Kaashoek
39f8cc56d3
Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6
2011-08-21 21:14:42 -04:00
Frans Kaashoek
3682474f77
delete dead code
2011-08-21 21:14:29 -04:00
Robert Morris
327cc21fba
make dirlookup and dirlink more similar
2011-08-19 13:30:57 -04:00
Frans Kaashoek
cd3d739e6f
bootloader reads into a physical address (not a virtual address)
2011-08-17 20:52:28 -04:00
Frans Kaashoek
fa81545f1c
Make elf proghdr fields match what objdump prints
2011-08-17 20:23:36 -04:00
Frans Kaashoek
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
Frans Kaashoek
c3dcf47966
Clean up memlayout.h
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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
Frans Kaashoek
427958cb71
Update make clean
2011-08-15 20:32:04 -04:00
Frans Kaashoek
eeea49e8d5
Update list of files to include in printout
2011-08-15 20:28:28 -04:00
Frans Kaashoek
d9818bdd7d
Make Austin happier
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2011
2011-08-15 20:21:14 -04:00
Frans Kaashoek
a4b213cf49
Avoid "boot" in xv6
2011-08-15 20:11:13 -04:00
Frans Kaashoek
9449646853
Use 4Mbyte pages during boot
2011-08-15 17:41:58 -04:00
Austin Clements
843eecfcd0
Only commit log to disk if something was written in to it.
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Without this, every write to the console results in log writes.
2011-08-15 14:12:35 -04:00
Robert Morris
7f1718ca33
Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6
2011-08-15 12:44:41 -04:00
Robert Morris
5053dd6a6d
avoid deadlock by calling begin_trans() before locking any inodes
2011-08-15 12:44:20 -04:00
Frans Kaashoek
c60a3551c2
Separate more clearly bootloader from xv6 by renaming multiboot.S to entry.S etc.
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Maybe the string boot shouldn't appear in xv6 code?
2011-08-15 12:02:59 -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
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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
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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
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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
