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Author SHA1 Message Date
Austin Clements d3ecf3eb44 Slight simplification of copyuvm. We could simplify other things now that processes are contiguous, but we'd have to think harder about the error paths. 2010-09-01 17:14:58 -04:00
Austin Clements b1d41d6788 Remove the stack guard page. Processes are now contiguous from 0 to 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 16:46:37 -04:00
Austin Clements 41c4bbb505 Make it easy to change the number of CPUs 2010-09-01 02:14:35 -04:00
Austin Clements b0751a3e9b Space police 2010-09-01 00:41:25 -04:00
Austin Clements 5efca9054f Tab police 2010-09-01 00:32:27 -04:00
Austin Clements 5c4dc7395b Merge branch 'master' of git+ssh://am.lcs/home/am0/6.828/xv6 2010-09-01 00:31:04 -04:00
Austin Clements ba04b3e70e Fix similar leak in copyuvm 2010-09-01 00:27:12 -04:00
Austin Clements dd645ef119 Cleanup if allocuvm fails to alloc. Add a test. 2010-08-31 21:49:49 -04:00
Robert Morris 23c3e52c2f Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6 2010-08-31 19:21:52 -04:00
Robert Morris 3597d5dc70 oops. last minute simplicifaction to kalloc(). 2010-08-31 19:21:33 -04:00
Austin Clements 5048762c7e Page break kalloc.c 2010-08-31 17:52:03 -04:00
Austin Clements 87b2099ae4 Our proc.c alignment is perfect. Since ksegment/usegment went away, we get a column back, so we get our two action-packed spreads. 2010-08-31 17:49:47 -04:00
Austin Clements 13b3f4d2e3 Make it possible to express half-page preferences 2010-08-31 17:46:30 -04:00
Austin Clements fd462b6a01 Got the meat of spinlocks on one spread 2010-08-31 17:40:21 -04:00
Austin Clements 6a6bf37c3c Swap bootmain.c and bootother.S. This puts the whole boot process on one spread, though it separates the two asm files. 2010-08-31 17:35:17 -04:00
Austin Clements c7ceb71d57 Sheet 1 is a right page now because of the (much) longer cross-ref 2010-08-31 17:33:04 -04:00
Austin Clements 51e2a7b324 print depends on runoff.spec 2010-08-31 17:30:31 -04:00
Austin Clements 29c054df81 We don't use lesp/lebp and using them at all from C would be fraught with peril. Keep resp/rebp, but fix their code style. 2010-08-31 17:07:54 -04:00
Austin Clements 7914ab7214 Page breaking of mmu.h 2010-08-31 16:54:50 -04:00
Austin Clements b5592b4d2f Start PDE defs on new page 2010-08-31 16:47:50 -04:00
Austin Clements 92639b6ba9 Follow xv6 code style. Also fixes indexing for these functions 2010-08-31 16:43:41 -04:00
Austin Clements 37ee75f42e Rearrange for better page breaking 2010-08-31 16:42:05 -04:00
Austin Clements 7472b2b451 Fix too-long lines 2010-08-31 16:26:08 -04:00
Austin Clements 04be8fb232 Rebalance TOC 2010-08-31 16:18:44 -04:00
Austin Clements 7b814133e4 Acknowledge patches 2010-08-31 16:13:20 -04:00
Austin Clements 1aee6a6c4f Hopefully get the printf size spec right, regardless of compiler. 2010-08-31 16:01:38 -04:00
Robert Morris 8d774afb2d no more pminit, or ELF header at 0x10000 
kinit() knows about end and PHYSTOP
map all of kernel read/write (rather than r/o instructions)
thanks, austin
 2010-08-31 15:39:25 -04:00
Austin Clements 880ee18ab1 mkfs must be compiled 32-bit. Fix mkfs warnings 2010-08-31 15:11:10 -04:00
Austin Clements 1e8035be53 Infer qemu path, just like in JOS 2010-08-31 15:05:27 -04:00
Austin Clements 0f0456ec53 Infer TOOLPREFIX, just like in JOS 2010-08-31 15:01:26 -04:00
Frans Kaashoek 9acdfe0d04 Merge branch 'page' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6 into page 2010-08-31 13:58:50 -04:00
Robert Morris 7d7dc9331b kalloc/kfree now only a page at a time 
do not keep sorted contiguous free list
 2010-08-31 12:54:47 -04:00
Frans Kaashoek 791d81cade Merge branch 'page' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6 into page 2010-08-30 17:28:39 -04:00
Frans Kaashoek 156b307e28 Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6 into page 2010-08-30 17:14:56 -04:00
Robert Morris 81b30b14d6 Merge remote branch 'origin/master' into page 2010-08-30 15:30:53 -04:00
Austin Clements fe4623b99c Fix for gdbstub argument change in qemu 0.11. Rename qemu-gdb-nox target to qemu-nox-gdb because you frequently want to add the gdb part, but rarely the nox part. 2010-08-30 12:22:08 -04:00
Robert Morris 3c9ff073e0 oops ended up with 2x vm.c 2010-08-30 11:17:54 -04:00
Robert Morris 979c5686b7 Merge remote branch 'origin/page' into page 2010-08-30 10:23:27 -04:00
Robert Morris ac090078c6 xx 2010-08-30 10:13:49 -04:00
Robert Morris 4d972493b6 no more xv6.pdf .ps 2010-08-30 07:26:54 -04:00
Robert Morris 8d8d6c7be3 we don't need CR0_WP 2010-08-30 06:48:48 -04:00
Robert Morris 5ab868fd90 set only PG and WP in vminit; the rest don't seem to be needed and are confusing 2010-08-30 06:38:58 -04:00
Frans Kaashoek d55b2fac07 Merge commit 'origin/page' into page 2010-08-26 08:03:18 -04:00
Frans Kaashoek d87f51c5a1 add vm.c 2010-08-26 07:51:08 -04:00
Robert Morris 789b508d53 uptime() sys call for benchmarking 
increase PHYSTOP
 2010-08-11 14:34:45 -04:00
Robert Morris 83d2db91f7 allow sbrk(-x) to de-allocate user memory 2010-08-10 17:08:41 -04:00
Robert Morris c4cc10da7e fix corner cases in exec of ELF 
put an invalid page below the stack
have fork() handle invalid pages
 2010-08-06 11:12:18 -04:00
Robert Morris 1afc9d3fca add some comments 
find out the hard way why user and kernel must have separate segment descriptors
 2010-08-05 21:16:55 -04:00
Robert Morris c99599784e remove some unused vm #defines 
fix corner cases with alignment when mapping kernel ELF file
 2010-08-05 16:00:59 -04:00
Robert Morris 2cf6b32d4d move jkstack to main.c 
replace jstack with asm()s
 2010-08-05 14:15:03 -04:00