Remove trailing white space with:
for f in *.{h,c}; do sed -i .sed 's/[[:blank:]]*$//' $f; done
(Thanks to Nicolás Wolovick)

Disentangle block size from the disk's sector size. Set block size to 1024 to show
that they can be different. Clean up mkfs, simplifying specifying fs parameters,
remove some redundancy between fs

Disentangle block size from the disk's sector size. Set block size to 1024 to show
that they can be different. Clean up mkfs, simplifying specifying fs parameters,
remove some redundancy between fs and mkfs, and fix disk layout bugs. Call blocks
in the file system blocks instead of sectors. Passes usertests for different
block sizes.

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Make the ELF entry point a physical address

This way, the bootloader doesn't have to translate the entry point.
This also makes xv6 multiboot-compliant and follows the convention
used by Linux.

move the kernel to 0x80000000

bootloader reads into a physical address (not a virtual address)

Make elf proghdr fields match what objdump prints

Map kernel high
Very important to give qemu memory through PHYSTOP :(

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-p

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.

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Simplify boot loader by removing some JOS'isms

xv6: boot loader adjustments

do Bochs breakpoint and spin in bootasm.S.
not needed in bootmain too.
fix readseg bug (rounding of va).
zero segments when memsz > filesz.
no need to clear BSS in kerne

xv6: boot loader adjustments

do Bochs breakpoint and spin in bootasm.S.
not needed in bootmain too.
fix readseg bug (rounding of va).
zero segments when memsz > filesz.
no need to clear BSS in kernel main.
make bootother.S like bootasm.S

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fix comments

fix offsets

more cmain -> bootmain

cmain -> bootmain

cut bootmain to 1 sheet

nits

add missing iput() at end of _namei()

PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf

Various changes made while offline.

+ bwrite sector argument is redundant; use b->sector.
+ reformatting of files for nicer PDF page breaks
+ distinguis

PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf

Various changes made while offline.

+ bwrite sector argument is redundant; use b->sector.
+ reformatting of files for nicer PDF page breaks
+ distinguish between locked, unlocked inodes in type signatures
+ change FD_FILE to FD_INODE
+ move userinit (nee proc0init) to proc.c
+ move ROOTDEV to param.h
+ always parenthesize sizeof argument

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wrap long lines

for vs while

no /* */ comments

standardize various * conventions

spacing fixes: no tabs, 2-space indents (for rtm)

uint32_t -> uint &c

standarize on unix-like lowercase struct names