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Author SHA1 Message Date
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
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
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
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
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
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
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
Frans Kaashoek 56e7cebdb9 Update to the latest specs 2020-08-10 20:28:47 -04:00
Frans Kaashoek 84dcf8a738 copyright and 6.S081 2020-08-10 19:41:57 -04:00
Frans Kaashoek fa71d7fca2 Ack bug finders. 2020-08-10 16:43:33 -04:00
Frans Kaashoek 5dace67371 Typo (thanks yt <jaichenhengjie@qq.com>) 2020-08-10 16:43:33 -04:00
Frans Kaashoek 96a20b0c0f Generate initcode without compressed extensions 2020-08-10 13:55:46 -04:00
Frans Kaashoek 0502342335
Merge pull request #9 from d0iasm/riscv 
update initcode to avoid using the compressed extension
 2020-08-10 13:54:58 -04:00
Frans Kaashoek 93ca5550b8
Merge pull request #10 from takahirox/VirtioInterruptAck 
Write virtio interrupt ack register in virtio_disk_intr()
 2020-08-10 13:24:57 -04:00
Frans Kaashoek 12c131de3e
Merge pull request #8 from rui314/cat-fix 
cat should exit normally if reading from stdin
 2020-08-10 13:14:41 -04:00
Frans Kaashoek d28c5d9837
Merge pull request #6 from jrrk2/riscv 
Update ramdisk.c
 2020-08-10 13:14:14 -04:00
Frans Kaashoek 6b593b9eae
Merge pull request #4 from 4ge32/riscv 
Fix minor typos
 2020-08-10 13:05:28 -04:00
Frans Kaashoek c31d35d803
Merge branch 'riscv' into riscv 2020-08-10 13:05:17 -04:00
Robert Morris d8fe1773b2 test string system call arguments that cross over the end of the last page. 2020-08-10 11:19:10 -04:00
Robert Morris 76d6c57ede test copyinstr()'s handling of the terminating null 2020-08-10 11:19:10 -04:00
Robert Morris e3b7058907 streamline copyin/copyout code in usertests 
fix bugs in read/write return values when there's an error
 2020-08-10 11:19:10 -04:00
Robert Morris a93321cb25 test pointer checking in copyin, copyout, copyinstr 2020-08-10 11:19:10 -04:00
Frans Kaashoek 1f555198d6 Change tf -> trapframe in a few comments 2020-08-10 11:19:10 -04:00
Robert Morris 7f35d7a14e modify each page in usertests countfree() 
get rid of static for walk() and freewalk()
 2020-08-10 11:19:10 -04:00
Robert Morris 2ae9c8e272 defines for UART register bits 2020-08-10 11:19:10 -04:00
Robert Morris 0f50e9527c fix printf() in interrupts 2020-08-10 11:19:10 -04:00
Robert Morris 27057bc9b4 interrupt-driven uart output, hopefully a nice example for teaching. 2020-08-10 11:19:10 -04:00
Robert Morris 1e72d5ca08 cpu->scheduler -> cpu->context to reduce confusion 2020-08-10 11:19:10 -04:00
Robert Morris 5494c91705 rename p->tf to p->trapframe, for consistency with p->context 2020-08-10 11:19:10 -04:00