Commit graph

37 commits

Author SHA1 Message Date
Stephen Tu ff2783442e Correct a security bug in copyuvm()
copyuvm() should not allow new copied pages to inherit more
permissions than the original pages.
2013-03-04 16:16:54 -05:00
Frans Kaashoek e25b74ca80 Fix layout issues for printed version 2011-09-01 10:25:20 -04:00
Austin Clements a7061b4f97 Style nits; indentation and tabs 2011-08-29 16:12:01 -04:00
Frans Kaashoek 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
Frans Kaashoek 9449646853 Use 4Mbyte pages during boot 2011-08-15 17:41:58 -04:00
Frans Kaashoek a56c8d609b One definition of several macros and constants 2011-08-08 13:30:08 -04:00
Frans Kaashoek 9aa0337dc1 Map kernel high
Very important to give qemu memory through PHYSTOP :(
2011-07-29 07:31:27 -04:00
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
Austin Clements 7914ab7214 Page breaking of mmu.h 2010-08-31 16:54:50 -04:00
Austin Clements b5592b4d2f Start PDE defs on new page 2010-08-31 16:47:50 -04:00
Robert Morris 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
Robert Morris 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
Robert Morris c99599784e remove some unused vm #defines
fix corner cases with alignment when mapping kernel ELF file
2010-08-05 16:00:59 -04:00
Robert Morris eb18645f17 fix allocuvm() to handle sbrk() with non-page-granularity argument
(maybe this never worked, but it works now)
2010-08-05 12:10:54 -04:00
Frans Kaashoek 30f5bf0548 some cleanup 2010-07-25 20:30:21 -04:00
Frans Kaashoek 40889627ba Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
Russ Cox 48755214c9 assorted fixes:
* rename c/cp to cpu/proc
 * rename cpu.context to cpu.scheduler
 * fix some comments
 * formatting for printout
2009-08-30 23:02:08 -07:00
Russ Cox b8912d999f mmu.h: unused SEG_NULL 2009-07-11 19:26:29 -07:00
rsc 0fe118f3f6 don't call it ss - that's the stack segment 2007-09-27 16:47:50 +00:00
rsc cce27ba9fb formatting 2007-08-14 19:41:38 +00:00
rsc 3fd50978a8 spacing 2007-08-08 09:12:53 +00:00
rsc b6dc6187f7 add DPL_USER constant 2007-08-08 09:02:42 +00:00
rsc 3c821bf9ae better comment 2006-09-07 16:54:15 +00:00
rsc 0cfc7290e8 wrap long lines 2006-09-06 19:08:14 +00:00
rsc f552738889 no /* */ comments 2006-09-06 17:50:20 +00:00
rsc 9e9bcaf143 standardize various * conventions 2006-09-06 17:27:19 +00:00
rsc a650c606fe spacing fixes: no tabs, 2-space indents (for rtm) 2006-09-06 17:04:06 +00:00
kaashoek 801affcd14 centralize credits 2006-09-03 15:10:33 +00:00
rtm dfcc5b997c prune unneeded panics and debug output 2006-08-29 19:06:37 +00:00
rtm 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
rtm 11a9947f1a bread
iget
mkfs makes a file system image
put this in your .bochsrc:
ata0-slave: type=disk, mode=flat, path="fs.img", cylinders=1024, heads=1, spt=1
2006-07-21 13:18:04 +00:00
rtm 2927081628 uint32_t -> uint &c 2006-07-20 09:07:53 +00:00
rsc b5f17007f4 standarize on unix-like lowercase struct names 2006-07-17 01:58:13 +00:00
rsc b5ee516575 add uint and standardize on typedefs instead of unsigned 2006-07-17 01:52:13 +00:00
rsc 564f787e91 Eliminate annoying Pseudodesc structure.
Eliminate unnecessary parts of mmu.h.
2006-07-16 16:55:52 +00:00
rsc ef2bd07ae4 standardize on not using foo_ prefix in struct foo 2006-07-16 15:41:47 +00:00
rtm 55e95b16db import 2006-06-12 15:22:12 +00:00