xv6-riscv - MIT xv6-RISCV kernel modified to RV64I base integer extension

Age	Commit message (Collapse)	Author
2007-08-21	Various cleanup:	rsc
	- 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].
2007-08-20	checkpoint - simpler namei interface	rsc

2007-08-14	nit	rsc

2007-08-14	Because limit gives the address of the last addressable	rsc
	byte in the segment, the limit argument to SEG16 and SEG needs to have 1 subtracted from it.
2007-08-10	Make cp a magic symbol.	rsc

2007-08-09	try to use cp only for curproc[cpu()]	rsc

2007-08-08	check p->killed for long-lived sleeps	rsc

2007-08-08	cleaner table	rsc

2007-08-08	cleaner table	rsc

2007-08-08	iincref returns new ref	rsc

2007-08-08	add DPL_USER constant	rsc

2007-08-08	fix various bugs	rsc

2007-08-08	comment tweaks; more informative process list	rsc

2006-09-08	move growproc up higher	rsc

2006-09-08	fix various comments	rsc

2006-09-07	check preconditions in sched	rsc

2006-09-07	debugging prints	rsc

2006-09-07	more comments	rsc

2006-09-07	more defensive programming	rsc

2006-09-06	fd_* => file_*	rsc

2006-09-06	fd.* -> file.*	rsc

2006-09-06	struct fd -> struct file	rsc

2006-09-06	no /* */ comments	rsc

2006-09-06	standardize various * conventions	rsc

2006-09-06	clear np->mem after freeing	rsc

2006-09-06	some pipe support in sh	kaashoek
	bug in proc_wait
2006-08-30	complain if no disk 1	rtm
	lots of cleanup
2006-08-29	nits	rtm

2006-08-29	clear killed flag in exit	rtm
	idecref cwd in exit
2006-08-29	prune unneeded panics and debug output	rtm

2006-08-29	i broke sbrk, fix it	rtm

2006-08-29	clean up stale error checks and panics	rtm
	delete unused functions a few comments
2006-08-24	bug in sbrk	kaashoek
	test malloc
2006-08-24	user-level malloc (untested)	kaashoek
	nit in sbrk indirect block fix dup to share fd struct
2006-08-23	i/o redirection in sh	kaashoek
	better parsing of sh commands (copied from jos sh) cat: read from 1 if no args sbrk system call, but untested getpid system call moved locks in keyboard intr, but why do we get intr w. null characters from keyboard?
2006-08-19	chdir	kaashoek
	cd in shell nits in mkdir, ls, etc.
2006-08-15	no more proc[] entry per cpu for idle loop	rtm
	each cpu[] has its own gdt and tss no per-proc gdt or tss, re-write cpu's in scheduler (you win, cliff) main0() switches to cpu[0].mpstack
2006-08-15	commented out code for cwd	kaashoek

2006-08-13	link()	rtm

2006-08-10	interrupts could be recursive since lapic_eoi() called before rti	rtm
	so fast interrupts overflow the kernel stack fix: cli() before lapic_eoi()
2006-08-08	fix race in holding() check in acquire()	rtm
	give cpu1 a TSS and gdt for when it enters scheduler() and a pseudo proc[] entry for each cpu cpu0 waits for each other cpu to start up read() for files
2006-07-29	open()	rtm

2006-07-27	primitive exec	rtm

2006-07-18	prevent longjmp / forkret from writing over tf->edi	rtm

2006-07-17	add ide_lock for sleep	rsc

2006-07-17	standarize on unix-like lowercase struct names	rsc

2006-07-17	add uint and standardize on typedefs instead of unsigned	rsc

2006-07-17	goodbye PushRegs	rsc

2006-07-17	nitpicks	rsc

2006-07-16	Eliminate annoying Pseudodesc structure.	rsc
	Eliminate unnecessary parts of mmu.h.