Imbus/xv6-riscv-kernel
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Author SHA1 Message Date
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
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
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