135e2/xv6-labs.git - xv6-labs-2024-winter

Age	Commit message (Collapse)	Author	Files	Lines
2011-09-03	I can't do math; fix bug introduced in 5a9761	Austin Clements	1	-1/+1

2011-09-02	Fit exec on a page. Again	Austin Clements	1	-5/+2

2011-09-02	clear_pte_u -> clearpteu	Austin Clements	1	-1/+1

2011-09-01	inaccessible page under the user stack page, to help exec deal w/ too-large args	Robert Morris	1	-3/+6

2011-08-17	Make elf proghdr fields match what objdump prints	Frans Kaashoek	1	-2/+2

2011-08-09	Use static page table for boot, mapping first 4Mbyte; no more segment trick	Frans Kaashoek	1	-1/+1
	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)
2011-07-29	Map kernel high	Frans Kaashoek	1	-0/+1
	Very important to give qemu memory through PHYSTOP :(
2011-02-19	xv6: formatting, cleanup, rev5 (take 2)	Russ Cox	1	-44/+18

2011-01-11	make new code like old code	Russ Cox	1	-12/+12
	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.
2010-09-29	even more fabulous exec	Robert Morris	1	-19/+8

2010-09-27	check exec() arg length	Robert Morris	1	-3/+8
	fix double iunlockput
2010-09-27	copyout() copies data to a va in a pagetable, for exec() &c	Robert Morris	1	-35/+58
	usertest that passes too many arguments, break exec
2010-09-19	my comment is wrong, exec handles BSS fine	Robert Morris	1	-3/+0

2010-09-19	exec questions	Robert Morris	1	-0/+6

2010-09-02	Simplify allocuvm/deallocuvm to operate in a contiguous memory model. This ↵	Austin Clements	1	-15/+11
	makes their interface match up better with proc->sz and also simplifies the callers (it even gets the main body of exec on one page).
2010-09-01	Remove the stack guard page. Processes are now contiguous from 0 to ↵	Austin Clements	1	-1/+0
	proc->sz, which means our syscall argument validation is correct. Add a pointer validation test and remove the stack test, which tested for the guard page.
2010-09-01	Tab police	Austin Clements	1	-5/+5

2010-08-06	fix corner cases in exec of ELF	Robert Morris	1	-2/+5
	put an invalid page below the stack have fork() handle invalid pages
2010-07-23	a few nits	Frans Kaashoek	1	-1/+1
	passes all tests on two-processor smp
2010-07-23	Checkpoint page-table version for SMP	Frans Kaashoek	1	-5/+1
	Includes code for TLB shootdown (which actually seems unnecessary for xv6)
2010-07-02	Initial version of single-cpu xv6 with page tables	Frans Kaashoek	1	-50/+40

2009-08-30	assorted fixes:	Russ Cox	1	-7/+7
	* rename c/cp to cpu/proc * rename cpu.context to cpu.scheduler * fix some comments * formatting for printout
2009-08-08	shuffle and tweak for formatting.	Russ Cox	1	-2/+4
	pdf has very good page breaks now. would be a good copy for fall 2009.
2009-07-13	exec tweaks	Russ Cox	1	-6/+11

2009-05-31	exec sanity check	rsc	1	-1/+1

2009-05-31	Some proc cleanup, moving some of copyproc into allocproc.	rsc	1	-1/+1
	Also, an experiment: use "thread-local" storage for c and cp instead of the #define macro for curproc[cpu()].
2007-08-30	oops - broke arg counting	rsc	1	-1/+1

2007-08-28	oops	rsc	1	-1/+1

2007-08-27	delete unnecessary #include lines	rsc	1	-1/+0

2007-08-27	Edit exec.	rsc	1	-77/+59
	Do not commit to new memory image until nothing can go wrong, avoiding bad2 case. Be sure to allocate enough stack space for argv. Load executable before initializing stack, to keep ELF loops together. Make argv loop clearer.
2007-08-24	Remove struct uinode.	rsc	1	-5/+5
	Remove type arg to mknod (assume T_DEV).
2007-08-22	PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf	rsc	1	-12/+10
	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
2007-08-21	Various cleanup:	rsc	1	-0/+136
	- Got rid of dummy proc[0]. Now proc[0] is init. - Added initcode.S to exec /init, so that /init is just a regular binary. - Moved exec out of sysfile to exec.c - Moved code dealing with fs guts (like struct inode) from sysfile.c to fs.c. Code dealing with system call arguments stays in sysfile.c - Refactored directory routines in fs.c; should be simpler. - Changed iget to return unlocked inode structure. This solves the lookup-then-use race in namei without introducing deadlocks. It also enabled getting rid of the dummy proc[0].