Commit graph

1451 commits

Author SHA1 Message Date
Frans Kaashoek b63d3506e9 Be principled: acquire lock first 2020-11-05 12:27:32 -05:00
Robert Morris 774288e05a proc_tree_lock -> wait_lock 2020-11-05 09:47:59 -05:00
Robert Morris bc943c2309 don't over-lock in exit() 2020-11-05 07:32:10 -05:00
Robert Morris 47323c97cf oops 2020-11-05 06:56:51 -05:00
Robert Morris 2875069973 Frans' proc_lock. 2020-11-05 06:56:51 -05:00
Robert Morris b48ea5d220 free proc if kalloc fails 2020-11-05 06:56:51 -05:00
Robert Morris 5e392531c0 hopefully make writei more correct 2020-11-05 06:56:51 -05:00
Robert Morris e1bb4c7434 test for closed pipe or killed on every char, not just if pipe full 2020-11-05 06:56:51 -05:00
Robert Morris 329935eca8 fix uart.c to work with UART_TX_BUF_SIZE == 1 2020-11-05 06:56:51 -05:00
Robert Morris 13dccb0380 consolewrite does not need cons.lock -- can lead to sleep() with lock held 2020-11-05 06:56:51 -05:00
Robert Morris 7dea4b93c8 oops 2020-11-03 16:35:20 -05:00
Robert Morris 8d4fbc6e2a Frans' proc_lock. 2020-11-03 15:02:08 -05:00
Robert Morris af570f582c free proc if kalloc fails 2020-11-01 11:11:38 -05:00
Robert Morris d7c0a1b7a7 hopefully make writei more correct 2020-10-23 10:18:30 -04:00
Robert Morris 147855e521 test for closed pipe or killed on every char, not just if pipe full 2020-10-22 06:36:36 -04:00
Robert Morris 4df1a265cb fix uart.c to work with UART_TX_BUF_SIZE == 1 2020-10-20 07:02:44 -04:00
Robert Morris 55ad99f729 Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2020-10-20 06:58:58 -04:00
Robert Morris 286b2f3c33 consolewrite does not need cons.lock -- can lead to sleep() with lock held 2020-10-20 06:55:51 -04:00
Fumiya Shigemitsu 05a7db1a0a Fix minor typos 2020-10-14 20:28:46 -04:00
Frans Kaashoek d4cecb269f kvmmake() makes a complete kernel page table, matching Figure 3.3 2020-10-14 20:28:16 -04:00
Robert Morris 21cfc97809 set riscv use-compressed-breakpoints yes 2020-10-14 20:28:16 -04:00
Fumiya Shigemitsu 93378618df Fix minor typos 2020-10-14 20:28:14 -04:00
Frans Kaashoek c64aa44d7b kvmmake() makes a complete kernel page table, matching Figure 3.3 2020-10-14 20:03:14 -04:00
Robert Morris 806580d642 set riscv use-compressed-breakpoints yes 2020-10-07 12:57:55 -04:00
Robert Morris bebecfd6fd more explicable scratch area size for machine-mode timer interrupts 2020-10-05 19:30:27 -04:00
Frans Kaashoek c199afe4c8 Don't map the CLINT, since it never used in the kernel in supervisor mode 2020-10-05 19:30:27 -04:00
Robert Morris c61cc69413 eliminate virtio DMA into kernel stacks. 2020-10-05 19:30:27 -04:00
Robert Morris 3092fe2c9e improve virtio_disk comments; bring it closer to wording in the spec 2020-10-05 19:30:27 -04:00
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