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Author SHA1 Message Date
Robert Morris 548ffc97e1 don't unpin if recovering -- the resulting negative refcnt suppresses next unpin 2020-10-05 19:30:27 -04:00
Robert Morris aeaf610c67 avoid deadlock by disk intr acking interrupt first, then processing ring 2020-10-05 19:30:27 -04:00
Robert Morris 3c70be9070 often causes deadlock after a few minutes 2020-10-05 19:30:27 -04:00
Robert Morris 6c16759503 more explicable scratch area size for machine-mode timer interrupts 2020-10-05 15:28:01 -04:00
Frans Kaashoek 0c55849d28 Don't map the CLINT, since it never used in the kernel in supervisor mode 2020-10-05 09:18:23 -04:00
Robert Morris a9b3dd457c eliminate virtio DMA into kernel stacks. 2020-10-05 06:59:33 -04:00
Robert Morris 271d89ae30 improve virtio_disk comments; bring it closer to wording in the spec 2020-10-05 06:26:58 -04:00
Robert Morris da002a48fb don't unpin if recovering -- the resulting negative refcnt suppresses next unpin 2020-10-04 13:29:04 -04:00
Robert Morris 792d60e912 avoid deadlock by disk intr acking interrupt first, then processing ring 2020-10-04 09:21:03 -04:00
Robert Morris e3672e018a often causes deadlock after a few minutes 2020-10-04 08:44:32 -04:00
Fumiya Shigemitsu 9c8d1e2909 Fix minor typos 2020-10-03 16:36:20 -04:00
Frans Kaashoek f2827b2c7b Clarify CLINT and PLIC acronym 2020-10-03 16:36:20 -04:00
Frans Kaashoek 8ffdfad990 Add s to many printf statements that expect it (thanks Cece Chu) 
Add dirtest to the list of tests
 2020-10-03 16:36:20 -04:00
Frans Kaashoek 6750608824 When either_copyin/out fails, return an error from write/read 
Add a test to check that read/write return an error
 2020-10-03 16:36:20 -04:00
Robert Morris 8c67f96b72 better grind error messages 2020-10-03 16:36:20 -04:00
Matt Harvey b9359c3533 Corrects order of UART RX/TX interrupt enable bits 
(per http://byterunner.com/16550.html and manually tested in qemu bare metal echo)
 2020-10-03 16:35:47 -04:00
Fumiya Shigemitsu b96547403d Fix minor typos 2020-10-03 16:35:45 -04:00
Frans Kaashoek b418a34537
Merge pull request #25 from matth79/patch-1 
Corrects order of UART RX/TX interrupt enable bits
 2020-10-03 16:33:41 -04:00
Frans Kaashoek 1c4b582fc7 Clarify CLINT and PLIC acronym 2020-10-03 10:21:04 -04:00
Frans Kaashoek d9c7b13acc Add s to many printf statements that expect it (thanks Cece Chu) 
Add dirtest to the list of tests
 2020-10-02 07:52:14 -04:00
Robert Morris 788b4d1bc9 Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2020-09-30 17:16:05 -04:00
Frans Kaashoek 05074badc4 When either_copyin/out fails, return an error from write/read 
Add a test to check that read/write return an error
 2020-09-24 13:18:54 -04:00
Matt Harvey 6781ac0036
Corrects order of UART RX/TX interrupt enable bits 
(per http://byterunner.com/16550.html and manually tested in qemu bare metal echo)
 2020-09-14 14:49:57 -07:00
Robert Morris 2055fe13ac better grind error messages 2020-09-06 14:20:18 -04:00
Frans Kaashoek e23d53f27f Delete doc dir because they take much space in student submissions 2020-08-28 16:22:39 -04:00
Frans Kaashoek 79899c7479 Delete doc dir because they take much space in student submissions 2020-08-28 16:21:07 -04:00
Robert Morris 490f91ab53 move panicked check to uart.c 2020-08-28 09:00:41 -04:00
Robert Morris 748809e1b3 suppress write() output after panic() 2020-08-28 09:00:41 -04:00
Frans Kaashoek de434fd933 Remove obselete ifdef that shouldn't have been there ever 2020-08-28 09:00:41 -04:00
Robert Morris 0b4e78f3a9 fix usertests to pass all the riscv-sol-fall20 solutions. 2020-08-28 09:00:41 -04:00
Robert Morris ffb2ee074a move panicked check to uart.c 2020-08-28 05:51:48 -04:00
Robert Morris db067d24da suppress write() output after panic() 2020-08-28 05:44:09 -04:00
Frans Kaashoek 2ec9c6ed66 Remove obselete ifdef that shouldn't have been there ever 2020-08-27 07:05:13 -04:00
Robert Morris d7e5f26910 fix usertests to pass all the riscv-sol-fall20 solutions. 2020-08-27 06:21:10 -04:00
Frans Kaashoek 0bb2533f73 Adjust a few prototypes to be explicit that they don't take arguments 2020-08-21 11:00:45 -04:00
Robert Morris 2a4a8764a5 touch sbrk()-allocated memory to make sure it exists 2020-08-21 11:00:45 -04:00
Robert Morris 5860dcd07d usertest for exec() out of memory recovery 
and fix a few exec() bugs
 2020-08-21 11:00:45 -04:00
Frans Kaashoek d4d487731a Use the major number defined in file.h. The minor number is ignored; 
might as well use 0.
 2020-08-21 11:00:45 -04:00
Frans Kaashoek 3c25112f38 Delete some obselete stuff 2020-08-21 11:00:45 -04:00
Frans Kaashoek efaa7b8e2a Adjust a few prototypes to be explicit that they don't take arguments 2020-08-21 10:56:27 -04:00
Robert Morris 59a9863a17 touch sbrk()-allocated memory to make sure it exists 2020-08-19 13:10:14 -04:00
Robert Morris aefa2697d7 usertest for exec() out of memory recovery 
and fix a few exec() bugs
 2020-08-19 12:35:14 -04:00
Frans Kaashoek b33574df38 Use the major number defined in file.h. The minor number is ignored; 
might as well use 0.
 2020-08-18 20:48:53 -04:00
Frans Kaashoek 740d363736 Delete some obselete stuff 2020-08-17 14:25:12 -04:00
Robert Morris 95dad4c061 x 2020-08-17 08:18:23 -04:00
Robert Morris f2ec6777bd fix a bug in the out-of-memory handling code in exec 2020-08-17 08:18:23 -04:00
Robert Morris 8dc71a257d handle another out-of-memory in fork(). the policy here is not consistent, 
since other calls (e.g. exec()) panic on out of memory.
 2020-08-17 08:18:23 -04:00
Robert Morris bc51626aab try to handle a few of the possible out-of-memory errors in fork() 2020-08-17 08:18:23 -04:00
Robert Morris a8dd44cf59 modify uvmunmap() to be in aligned pages 
fix a bug in fork() recovering from out of memory
 2020-08-17 08:18:23 -04:00
Robert Morris e283514ad0 pa isn't needed in the uvmunmap() loop 2020-08-17 08:18:23 -04:00