3 commits

Author	SHA1	Message	Date
kaashoek	7837c71b32	disable all interrupts when acquiring lock ... user program that makes a blocking system call	2006-07-06 21:47:22 +00:00
rtm	8b4e2a08fe	swtch saves callee-saved registers ... swtch idles on per-CPU stack, not on calling process's stack fix pipe bugs usertest.c tests pipes, fork, exit, close	2006-07-01 21:26:01 +00:00
rtm	c41f1de5d4	file descriptors ... pipes	2006-06-27 14:35:53 +00:00