11 commits

Author	SHA1	Message	Date
Robert Morris	d6dad42aaf	rename p->tf to p->trapframe, for consistency with p->context	2020-07-17 16:29:52 -04:00
Robert Morris	d600026c3f	cut ramdisk	2019-07-30 16:06:00 -04:00
Robert Morris	5d5e4e065f	comments for timer setup	2019-07-25 05:35:03 -04:00
Robert Morris	54178ad94d	simplify kernel mapping calls	2019-07-23 12:17:17 -04:00
Robert Morris	6b379e4707	-MD and TRAPFRAME	2019-07-22 14:54:40 -04:00
Frans Kaashoek	5eab649255	Allocate 2 pages per proc, with the top one unmapped. ... The page below the last proc is unmapped by default (because the kernel doesn't map anything right below the kernel stacks).	2019-07-22 14:30:45 -04:00
Frans Kaashoek	9156632701	One way of supporting a guard page below kstack: allocate kstacks in ... procinit() and map them high up (below TRAMPOLNE) with an empty mapping below each stack. Never free a kernel stack. Another way would be to allocate and map them dynamically, but then we need to reload page table when switching processes in scheduler() and/or have a kernel pagetable per proc (if we want k->stack to be the same virtual address in each process). One gotcha: kernel addresses are not equal to physical addresses for stack addresses. A stack address must be translated if we need its physical address (e.g., virtio passes a stack address to the disk).	2019-07-19 08:38:51 -04:00
Robert Morris	ca39672a30	clean up virtio code	2019-06-13 09:40:17 -04:00
Robert Morris	4adf016925	eliminate ramdisk	2019-06-13 06:57:38 -04:00
Robert Morris	de9d72c908	virtio disk driver	2019-06-13 06:49:02 -04:00
Robert Morris	5753553213	separate source into kernel/ user/ mkfs/	2019-06-11 09:57:14 -04:00

Renamed from memlayout.h (Browse further)