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2011-09-02Nuke data.S, since we do have a custom linker script.Austin Clements1-1/+1
2011-09-02Oops, dropped a parenAustin Clements1-1/+1
2011-09-02clear_pte_u -> clearpteuAustin Clements1-2/+2
2011-09-02Move copy_pte_u; fits vm.c in one less column and aligns proc.hAustin Clements1-13/+13
2011-09-02Cleanup comments and fit setupkvm on same page as kmap, which aligns lots of ↵Austin Clements1-10/+6
other things
2011-09-02StyleAustin Clements1-7/+7
2011-09-02Make mappages fit on the pageAustin Clements1-2/+1
2011-09-01Skip missing page directories in deallocuvmAustin Clements1-1/+3
Previously, deallocuvm scanned from 0 to KERNBASE in one page increments, which had a noticable effect on boot time. Now it skips over missing page directories.
2011-09-01inaccessible page under the user stack page, to help exec deal w/ too-large argsRobert Morris1-0/+13
2011-09-01Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6Robert Morris1-15/+17
Conflicts: vm.c
2011-09-01fix usertests to correctly test what happens when you callRobert Morris1-2/+3
exec() with arguments that don't fit on a single page.
2011-09-01Fix layout issues for printed versionFrans Kaashoek1-16/+19
2011-08-29Style nits; indentation and tabsAustin Clements1-1/+1
2011-08-24Eliminate USERTOP; no use for it.Frans Kaashoek1-3/+3
2011-08-16Switch back to #define for PHYSTOP. Using the E820 to retrieve the memory ↵Frans Kaashoek1-11/+5
map is too complicated (must be done in 16-bit real-mode, probably enlarged bootblock beyond 512 bytes, and a #define requires less explanation).
2011-08-16Clean up memlayout.hFrans Kaashoek1-9/+17
Get rid of last instances of linear address and "la" Get ready for detecting physical memory dynamically
2011-08-15Make Austin happierFrans Kaashoek1-12/+12
2011
2011-08-15Avoid "boot" in xv6Frans Kaashoek1-2/+2
2011-08-11Make AP processors boot using bootpgdirFrans Kaashoek1-26/+4
Remove device mapping from bootpgdir Remove unnecessary vmenable Set CPUS back to 2 in Makefile Passes all usertests
2011-08-09Tiny bit of cleanupFrans Kaashoek1-7/+7
2011-08-09xFrans Kaashoek1-4/+4
2011-08-09Use static page table for boot, mapping first 4Mbyte; no more segment trickFrans Kaashoek1-76/+18
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)
2011-08-07Adjust sbrk test for large user address spacesFrans Kaashoek1-1/+1
All tests pass
2011-07-31Don't map IO space in the user part of the address spaceFrans Kaashoek1-8/+10
Passes all tests now (but need to update usertests to allow for more than 640k)
2011-07-29Map kernel highFrans Kaashoek1-28/+99
Very important to give qemu memory through PHYSTOP :(
2011-02-19xv6: formatting, cleanup, rev5 (take 2)Russ Cox1-61/+54
2011-01-11more trivial cleanupRuss Cox1-12/+9
2011-01-11make new code like old codeRuss Cox1-59/+84
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.
2010-09-27copyout() copies data to a va in a pagetable, for exec() &cRobert Morris1-4/+28
usertest that passes too many arguments, break exec
2010-09-20map kernel instructions r/oRobert Morris1-2/+7
2010-09-13change some comments, maybe more informativeRobert Morris1-1/+1
delete most comments from bootother.S (since copy of bootasm.S) ksegment() -> seginit() move more stuff from main() to mainc()
2010-09-02Simplify allocuvm/deallocuvm to operate in a contiguous memory model. This ↵Austin Clements1-31/+27
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).
2010-09-02Comment inituvm and loaduvmAustin Clements1-0/+4
2010-09-02Fix comment capitalizationAustin Clements1-14/+14
2010-09-02Rearrange vm.c so it's in logical order and prints nicely. Shorten a few ↵Austin Clements1-135/+129
functions in uninteresting ways to make them fit.
2010-09-02Simplify inituvm and userinit by assuming initcode fits on a pageAustin Clements1-13/+7
2010-09-02Simplify freevm using deallocuvmAustin Clements1-19/+6
2010-09-01Slight simplification of copyuvm. We could simplify other things now that ↵Austin Clements1-8/+8
processes are contiguous, but we'd have to think harder about the error paths.
2010-09-01Space policeAustin Clements1-28/+28
2010-09-01Tab policeAustin Clements1-7/+7
2010-09-01Fix similar leak in copyuvmAustin Clements1-2/+6
2010-08-31Cleanup if allocuvm fails to alloc. Add a test.Austin Clements1-1/+2
2010-08-31no more pminit, or ELF header at 0x10000Robert Morris1-41/+4
kinit() knows about end and PHYSTOP map all of kernel read/write (rather than r/o instructions) thanks, austin
2010-08-31kalloc/kfree now only a page at a timeRobert Morris1-9/+8
do not keep sorted contiguous free list
2010-08-30xxRobert Morris1-2/+2
2010-08-30we don't need CR0_WPRobert Morris1-3/+1
2010-08-30set only PG and WP in vminit; the rest don't seem to be needed and are confusingRobert Morris1-2/+3
2010-08-11uptime() sys call for benchmarkingRobert Morris1-1/+3
increase PHYSTOP
2010-08-10allow sbrk(-x) to de-allocate user memoryRobert Morris1-1/+25
2010-08-06fix corner cases in exec of ELFRobert Morris1-23/+43
put an invalid page below the stack have fork() handle invalid pages
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