Commit graph

1238 commits

Author SHA1 Message Date
Frans Kaashoek 89826f41bd Check result of write (thans to Alexander Kapshuk <alexander.kapshuk@gmail) 2016-09-19 07:01:30 -04:00
Tej Chajed fc1a5da295
Fix a small README typo 2016-09-16 09:11:23 -04:00
Frans Kaashoek 912575ad12 Remove left-over print statements 2016-09-15 19:16:30 -04:00
Robert Morris d6dc5bcb2d Merge branch 'master' of g.csail.mit.edu:xv6-dev 2016-09-15 12:56:17 -04:00
Robert Morris aeaa308943 change allocproc() back to acquiring the ptable.lock.
fix bugs where caller incorrectly released lock on error return path.
2016-09-15 12:12:05 -04:00
Robert Morris 469aa8b9b3 xx 2016-09-15 12:01:52 -04:00
Frans Kaashoek 33188666da Delete two left-over print statements 2016-09-14 21:13:09 -04:00
Frans Kaashoek 6cec0211d8 Update comment a bit. 2016-09-14 13:01:53 -04:00
Frans Kaashoek da91a3a408 Add sleeplock.[ch] to listing 2016-09-14 08:43:57 -04:00
Frans Kaashoek e85cb90cbf one more BUSY 2016-09-13 14:51:44 -04:00
Frans Kaashoek 564a1cf0cb sleeplock files 2016-09-11 21:01:24 -04:00
Frans Kaashoek dec637bc59 Replace I_BUSY with sleep locks 2016-09-11 20:59:57 -04:00
Frans Kaashoek 2adb7c21dc Move retry loop/sleep/wakeup in bio.c into sleeping locks 2016-09-11 20:17:22 -04:00
Frans Kaashoek 6670d3b5e0 Straight replacement of B_BUSY with a sleeping lock. 2016-09-11 17:24:04 -04:00
Frans Kaashoek 551c2f3576 Merge branch 'master' of g.csail.mit.edu:xv6-dev 2016-09-08 21:20:26 -04:00
Frans Kaashoek 1b8ccf9482 x 2016-09-08 21:20:17 -04:00
Robert Morris 34c2efc1d0 use asm() for lock release, not a C assignment 2016-09-08 14:45:20 -04:00
Robert Morris d63ac118e8 this might fix the reported deadlock, though I can't reproduce it. 2016-09-08 14:22:38 -04:00
Frans Kaashoek 761ea5471f Be a bit more explicit what kind of suggestions are are interested. 2016-09-08 13:09:09 -04:00
Frans Kaashoek 5bf3fbee00 Make runoff happy 2016-09-02 15:27:28 -04:00
Frans Kaashoek b7fed77b7b Fix a few lines that runoff is complaining about that they are too long 2016-09-02 14:59:00 -04:00
Frans Kaashoek 5f03799f84 ack xi 2016-09-02 08:43:33 -04:00
Frans Kaashoek b8fd4cba13 Merge branch 'master' of g.csail.mit.edu:xv6-dev 2016-09-02 08:36:14 -04:00
Frans Kaashoek ae15515d80 APIC IDs may not be consecutive and start from zero, so we cannot really use it
as a direct index into cpus.  Record apicid in struct cpu and have cpunum() look
for it. Replace cpu->id with cpunum() everywhere, and replace cpu->id with cpu->apicid.
Thanks to Xi Wang.
2016-09-02 08:31:13 -04:00
Robert Morris bc8221a59c comment about sched() saving/restoring cpu->intena 2016-09-02 05:40:54 -04:00
Robert Morris 4b2152cc2d curproc -> proc in a comment 2016-09-01 17:21:37 -04:00
Frans Kaashoek 37939f24c2 better comment 2016-08-26 08:46:13 -04:00
Frans Kaashoek 27ff70dc08 ack 2016-08-26 08:22:24 -04:00
Frans Kaashoek aff0c8d5c7 set iomb to forbid i/o instructions from user space
add to test that they indeed trap in user space
thanks to pablogventura@gmail.com and nwolovick@gmail.com
2016-08-26 08:20:11 -04:00
Frans Kaashoek 745a4d31a6 x 2016-08-25 09:14:52 -04:00
Frans Kaashoek 7894fcd217 Remove trailing white space with:
for f in *.{h,c}; do sed -i .sed 's/[[:blank:]]*$//' $f; done
(Thanks to Nicolás Wolovick)
2016-08-25 09:13:00 -04:00
Frans Kaashoek 6de6a3c952 ack mikecat 2016-08-25 07:12:33 -04:00
MikeCAT 5625ae4973 add check for wrapping of address + size in exec() 2016-08-25 07:09:46 -04:00
MikeCAT 67a7f9597e add alignment check of virtual address to exec() 2016-08-25 07:09:10 -04:00
Robert Morris a7c03bd914 p2v -> P2V 2016-08-24 13:40:06 -04:00
Frans Kaashoek 7a77375d64 x 2016-08-19 07:20:08 -04:00
Frans Kaashoek 1fc87f367c Coding style (thanks to phf). 2016-08-18 21:02:05 -04:00
Peter H. Froehlich 5faed8ba64 Fixed QEMU command line avoids raw image warning. 2016-08-18 14:30:30 -04:00
Frans Kaashoek 0f3d9d9d68 It will be for 2016 2016-08-18 14:00:48 -04:00
Frans Kaashoek 987064cb12 Update based on a scan of my 6828 folder 2016-08-18 13:37:32 -04:00
Peter H. Froehlich 2a117310b5 Removed useless variable. 2016-08-18 11:25:44 -04:00
Peter H. Froehlich 216fdf846f Again, QEMU command line to avoid image warning. 2016-08-18 11:20:43 -04:00
Peter H. Froehlich 1ccb5a6fca Remove unused variable, nits. 2016-08-18 11:15:56 -04:00
Peter H. Froehlich 2c60b7f31f Removed useless function and prototypes. 2016-08-18 11:09:04 -04:00
Frans Kaashoek 09396a801a Thanks to Warren Toomey for RDMUL and WRMUL. 2016-08-18 07:42:13 -04:00
Frans Kaashoek 4a3576b810 Small change to support RWMUL and WRMUL. Now xv6 truly works with a block size
that is a multiple of the sector size.
2016-08-18 07:39:03 -04:00
Robert Morris 19f65413bd hold ptable.lock for the entire process creation
however, processes still modify their own p->* without locking
2016-08-13 03:44:13 -04:00
Robert Morris 20d05d4411 separate atomic test-and-set from memory barrier.
* use xchg only for its atomicness.
* use __sync_synchronize() for both CPU and compiler barrier.
2016-08-12 07:03:35 -04:00
Robert Morris 9c65b32d9e nothing much 2016-08-11 15:41:53 -04:00
Robert Morris c779cc2be1 main comments 2016-08-11 13:55:13 -04:00