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Austin Clements 41f16c2183 Increase VM memory when running qemu-memfs
Presumably because of the pre-loaded file system, the default RAM is
insufficient when running kernelmemfs
2014-10-03 09:44:26 -04:00
.cvsignore
.dir-locals.el Setting indent-tabs-mode nil everywhere is dangerous 2011-09-05 15:22:16 -04:00
.gdbinit.tmpl
.gitignore Sync up clean and gitignore better 2011-09-05 15:21:40 -04:00
asm.h add some comments 2010-08-05 21:16:55 -04:00
bio.c Nice layout for a printout of the code 2014-08-29 17:06:49 -04:00
bootasm.S comment nits 2011-09-12 14:27:14 -04:00
bootmain.c Make the ELF entry point a physical address 2011-09-04 15:51:46 -04:00
buf.h Revert "Introduce and use sleeplocks instead of BUSY flags" 2011-08-29 17:18:40 -04:00
BUGS
cat.c
console.c Remove unused 'state' variable that broke the build in recent gcc's 2011-09-07 16:39:27 -04:00
cuth
date.h whoops. forgot date.h 2014-09-12 18:41:38 -04:00
defs.h cmosgetdate() for system-call homework 2014-09-12 18:09:51 -04:00
dot-bochsrc
echo.c
elf.h Make elf proghdr fields match what objdump prints 2011-08-17 20:23:36 -04:00
entry.S more regular kmap[] and description 2011-09-13 12:28:45 -04:00
entryother.S Fix stale comments in entryother.S 2011-09-04 15:56:16 -04:00
exec.c a start at concurrent FS system calls 2014-08-27 17:15:30 -04:00
fcntl.h
file.c a start at concurrent FS system calls 2014-08-27 17:15:30 -04:00
file.h Nice layout for a printout of the code 2014-08-29 17:06:49 -04:00
forktest.c
fs.c xx 2014-08-28 17:04:47 -04:00
fs.h clarify some FS comments 2011-10-11 06:41:37 -04:00
gdbutil
grep.c
ide.c make the book happy 2012-08-28 14:41:08 -04:00
init.c
initcode.S Remove sys_init syscall 2011-08-22 20:05:15 -04:00
ioapic.c
kalloc.c eliminate enter_alloc -- use kalloc for everything 2011-09-13 13:14:52 -04:00
kbd.c
kbd.h
kernel.ld Nuke data.S, since we do have a custom linker script. 2011-09-02 14:51:55 -04:00
kill.c
lapic.c cmosgetdate() for system-call homework 2014-09-12 18:09:51 -04:00
LICENSE
ln.c
log.c Nice layout for a printout of the code 2014-08-29 17:06:49 -04:00
ls.c
main.c Nice layout for a printout of the code 2014-08-29 17:06:49 -04:00
Makefile Increase VM memory when running qemu-memfs 2014-10-03 09:44:26 -04:00
memide.c missing file memide.c 2011-01-11 13:54:23 -05:00
memlayout.h more regular kmap[] and description 2011-09-13 12:28:45 -04:00
mkdir.c
mkfs.c i think this is a working concurrent logging scheme 2014-08-28 05:57:47 -04:00
mmu.h Correct a security bug in copyuvm() 2013-03-04 16:16:54 -05:00
mp.c Avoid "boot" in xv6 2011-08-15 20:11:13 -04:00
mp.h Nice layout for a printout of the code 2014-08-29 17:06:49 -04:00
Notes
param.h xx 2014-08-28 17:04:47 -04:00
picirq.c Get rid of the blank page in picirq.c. It misaligs things now. 2010-09-02 18:36:06 -04:00
pipe.c Revert "Introduce and use sleeplocks instead of BUSY flags" 2011-08-29 17:18:40 -04:00
pr.pl
printf.c
printpcs Various fixes and improvements to printpcs 2012-08-24 14:51:52 -04:00
proc.c a start at concurrent FS system calls 2014-08-27 17:15:30 -04:00
proc.h use acquire/release to force order for pid=np->pid;np->state=RUNNING 2014-08-04 06:13:49 -04:00
README Ack all bug reports and patches. Is this all of them? 2014-08-29 09:03:29 -04:00
rm.c
runoff no need to generate postscript version 2014-08-29 17:10:32 -04:00
runoff.list Remove data.S from runoff, too 2011-09-02 14:52:53 -04:00
runoff.spec Nice layout for a printout of the code 2014-08-29 17:06:49 -04:00
runoff1 xv6: formatting, cleanup, rev5 (take 2) 2011-02-19 21:17:55 -05:00
sh.c move jkstack to main.c 2010-08-05 14:15:03 -04:00
show1
sign.pl
sleep1.p
spinlock.c Revert "Introduce and use sleeplocks instead of BUSY flags" 2011-08-29 17:18:40 -04:00
spinlock.h Revert "Introduce and use sleeplocks instead of BUSY flags" 2011-08-29 17:18:40 -04:00
spinp
stat.h junk 2012-08-28 12:57:05 -04:00
stressfs.c Update stressfs to trigger race now the logging code serializes writes 2011-09-27 12:59:47 -04:00
string.c Use stosl in memset; makes boot time bearable 2011-09-01 10:41:27 -04:00
swtch.S move jkstack to main.c 2010-08-05 14:15:03 -04:00
symlink.patch
syscall.c Remove left-over from some logging plan making complete syscalls atomic 2012-08-22 20:28:58 -04:00
syscall.h Remove left-over from some logging plan making complete syscalls atomic 2012-08-22 20:28:58 -04:00
sysfile.c a start at concurrent FS system calls 2014-08-27 17:15:30 -04:00
sysproc.c cmosgetdate() for system-call homework 2014-09-12 18:09:51 -04:00
timer.c
toc.ftr Update index example in TOC footer 2011-09-02 16:30:20 -04:00
toc.hdr
trap.c Map kernel high 2011-07-29 07:31:27 -04:00
trapasm.S One definition of several macros and constants 2011-08-08 13:30:08 -04:00
traps.h
TRICKS use acquire/release to force order for pid=np->pid;np->state=RUNNING 2014-08-04 06:13:49 -04:00
types.h
uart.c
ulib.c make new code like old code 2011-01-11 13:01:13 -05:00
umalloc.c make new code like old code 2011-01-11 13:01:13 -05:00
user.h cmosgetdate() for system-call homework 2014-09-12 18:09:51 -04:00
usertests.c i think this is a working concurrent logging scheme 2014-08-28 05:57:47 -04:00
usys.S uptime() sys call for benchmarking 2010-08-11 14:34:45 -04:00
vectors.pl
vm.c Nice layout for a printout of the code 2014-08-29 17:06:49 -04:00
wc.c junk 2012-08-28 12:57:05 -04:00
x86.h Remove unused x86.h definitions 2011-09-02 14:52:13 -04:00
zombie.c

xv6 is a re-implementation of Dennis Ritchie's and Ken Thompson's Unix
Version 6 (v6).  xv6 loosely follows the structure and style of v6,
but is implemented for a modern x86-based multiprocessor using ANSI C.

ACKNOWLEDGMENTS

xv6 is inspired by John Lions's Commentary on UNIX 6th Edition (Peer
to Peer Communications; ISBN: 1-57398-013-7; 1st edition (June 14,
2000)). See also http://pdos.csail.mit.edu/6.828/2012/v6.html, which
provides pointers to on-line resources for v6.

xv6 borrows code from the following sources:
    JOS (asm.h, elf.h, mmu.h, bootasm.S, ide.c, console.c, and others)
    Plan 9 (entryother.S, mp.h, mp.c, lapic.c)
    FreeBSD (ioapic.c)
    NetBSD (console.c)

The following people have made contributions:
    Russ Cox (context switching, locking)
    Cliff Frey (MP)
    Xiao Yu (MP)
    Nickolai Zeldovich
    Austin Clements

In addition, we are grateful for the bug reports and patches contributed by
Silas Boyd-Wickizer, Peter Froehlich, Shivam Handa, Anders Kaseorg, Eddie
Kohler, Yandong Mao, Hitoshi Mitake, Carmi Merimovich, Joel Nider, Greg Price,
Eldar Sehayek, Yongming Shen, Stephen Tu, and Zouchangwei.

The code in the files that constitute xv6 is
Copyright 2006-2014 Frans Kaashoek, Robert Morris, and Russ Cox.

ERROR REPORTS

If you spot errors or have suggestions for improvement, please send
email to Frans Kaashoek and Robert Morris (kaashoek,rtm@csail.mit.edu). 

BUILDING AND RUNNING XV6

To build xv6 on an x86 ELF machine (like Linux or FreeBSD), run "make".
On non-x86 or non-ELF machines (like OS X, even on x86), you will
need to install a cross-compiler gcc suite capable of producing x86 ELF
binaries.  See http://pdos.csail.mit.edu/6.828/2014/tools.html.
Then run "make TOOLPREFIX=i386-jos-elf-".

To run xv6, install the QEMU PC simulators.  To run in QEMU, run "make qemu".

To create a typeset version of the code, run "make xv6.pdf".  This
requires the "mpage" utility.  See http://www.mesa.nl/pub/mpage/.