Commit graph

1472 commits

Author SHA1 Message Date
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
Robert Morris 241188276c nits 2016-08-10 12:06:02 -04:00
Robert Morris 3431cd4927 more comments in entryother.S 2016-08-10 11:35:28 -04:00
Robert Morris 0a69dc9b17 even more explicit that entry.S is linked into kernel, unlike bootasm.S. 2016-08-10 11:22:36 -04:00
Robert Morris 858475e4df tiny clarifications to some gdt code. 2016-08-10 10:51:14 -04:00
Robert Morris 0a4a4230a3 shell nits
fix Regehr complaint
2016-08-08 13:06:38 -04:00
Frans Kaashoek 50edfe1412 nits 2015-11-15 13:40:42 -05:00
Nathaniel Wesley Filardo 5906118897 Remove console input.lock
Use cons.lock for everything.  This eliminates the possibility that two CPUS
independently, simultaneously manipulate the CRTC in cgaputc.
2015-11-15 13:28:43 -05:00
Nathaniel Wesley Filardo 02530a4859 Add sanity check panic for CRTC interactions 2015-11-15 13:28:15 -05:00
kaashoek b019ac4f7d Merge pull request #3 from beordle/master
Fix comments
2015-11-15 12:51:54 -05:00
kaashoek 9cbe056cec Merge pull request #5 from kehao95/master
Update URL for 2014
2015-11-15 12:45:53 -05:00
kehao95 5371a631d7 Update URL for 2014 2015-11-14 00:14:31 +08:00
Jindong Zhang abce9b8140 Fix comments 2015-09-18 23:36:45 +08:00
Ayan Shafqat 4f2d38147f Fixed broken build on Arch Linux 2015-08-12 22:11:39 -04:00
Frans Kaashoek ecb40fb19d coding style (per Jeremías Feltan <jeremias.feltan@gmail.com>) 2015-06-30 16:23:56 -04:00
Frans Kaashoek b67ed0902d Update memide to reflect recent changes to fs and buf 2015-06-27 13:38:03 -04:00
Frans Kaashoek 8320d61be5 Pick up where i left off in april:
- move log into metadata part of disk, so that marking
that the log's blocks are in use falls out for free
- superblock describes the whole disk (sizes and offets)
- sizes and offsets are computed in one place (mkfs) and
the rest of the code refers to the superblock for these values,
instead of recomputing them.
2015-06-27 12:39:13 -04:00