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2020-10-05more explicable scratch area size for machine-mode timer interruptsRobert Morris2-12/+12
2020-10-05Don't map the CLINT, since it never used in the kernel in supervisor modeFrans Kaashoek1-3/+0
2020-10-05eliminate virtio DMA into kernel stacks.Robert Morris3-31/+12
2020-10-05improve virtio_disk comments; bring it closer to wording in the specRobert Morris2-37/+85
2020-10-05don't unpin if recovering -- the resulting negative refcnt suppresses next unpinRobert Morris1-4/+5
2020-10-05avoid deadlock by disk intr acking interrupt first, then processing ringRobert Morris2-21/+37
2020-10-05often causes deadlock after a few minutesRobert Morris1-2/+58
2020-10-03Fix minor typosFumiya Shigemitsu1-1/+1
2020-10-03Clarify CLINT and PLIC acronymFrans Kaashoek1-2/+2
2020-10-03Add s to many printf statements that expect it (thanks Cece Chu)Frans Kaashoek1-21/+19
Add dirtest to the list of tests
2020-10-03When either_copyin/out fails, return an error from write/readFrans Kaashoek2-0/+50
Add a test to check that read/write return an error
2020-10-03better grind error messagesRobert Morris1-19/+19
2020-10-03Merge pull request #25 from matth79/patch-1Frans Kaashoek1-2/+2
Corrects order of UART RX/TX interrupt enable bits
2020-09-14Corrects order of UART RX/TX interrupt enable bitsMatt Harvey1-2/+2
(per http://byterunner.com/16550.html and manually tested in qemu bare metal echo)
2020-08-28Delete doc dir because they take much space in student submissionsFrans Kaashoek5-0/+0
2020-08-28move panicked check to uart.cRobert Morris4-16/+32
2020-08-28suppress write() output after panic()Robert Morris2-1/+7
2020-08-28Remove obselete ifdef that shouldn't have been there everFrans Kaashoek1-4/+0
2020-08-28fix usertests to pass all the riscv-sol-fall20 solutions.Robert Morris1-22/+97
2020-08-21Adjust a few prototypes to be explicit that they don't take argumentsFrans Kaashoek1-4/+4
2020-08-21touch sbrk()-allocated memory to make sure it existsRobert Morris1-2/+14
2020-08-21usertest for exec() out of memory recoveryRobert Morris3-4/+42
and fix a few exec() bugs
2020-08-21Use the major number defined in file.h. The minor number is ignored;Frans Kaashoek1-1/+5
might as well use 0.
2020-08-21Delete some obselete stuffFrans Kaashoek2-59/+0
2020-08-17xRobert Morris3-15/+21
2020-08-17fix a bug in the out-of-memory handling code in execRobert Morris2-5/+5
2020-08-17handle another out-of-memory in fork(). the policy here is not consistent,Robert Morris3-3/+10
since other calls (e.g. exec()) panic on out of memory.
2020-08-17try to handle a few of the possible out-of-memory errors in fork()Robert Morris1-5/+18
2020-08-17modify uvmunmap() to be in aligned pagesRobert Morris2-21/+18
fix a bug in fork() recovering from out of memory
2020-08-17pa isn't needed in the uvmunmap() loopRobert Morris1-3/+1
2020-08-10Update to the latest specsFrans Kaashoek4-0/+0
2020-08-10copyright and 6.S081Frans Kaashoek1-2/+2
2020-08-10Ack bug finders.Frans Kaashoek1-9/+11
2020-08-10Typo (thanks yt <jaichenhengjie@qq.com>)Frans Kaashoek1-1/+1
2020-08-10Generate initcode without compressed extensionsFrans Kaashoek1-1/+1
2020-08-10Merge pull request #9 from d0iasm/riscvFrans Kaashoek1-7/+7
update initcode to avoid using the compressed extension
2020-08-10Merge pull request #10 from takahirox/VirtioInterruptAckFrans Kaashoek1-0/+1
Write virtio interrupt ack register in virtio_disk_intr()
2020-08-10Merge pull request #8 from rui314/cat-fixFrans Kaashoek0-0/+0
cat should exit normally if reading from stdin
2020-08-10Merge pull request #6 from jrrk2/riscvFrans Kaashoek1-1/+1
Update ramdisk.c
2020-08-10Merge pull request #4 from 4ge32/riscvFrans Kaashoek1-2/+2
Fix minor typos
2020-08-10Merge branch 'riscv' into riscvFrans Kaashoek31-251/+1074
2020-08-10test string system call arguments that cross over the end of the last page.Robert Morris1-0/+53
2020-08-10test copyinstr()'s handling of the terminating nullRobert Morris1-2/+64
2020-08-10streamline copyin/copyout code in usertestsRobert Morris4-77/+86
fix bugs in read/write return values when there's an error
2020-08-10test pointer checking in copyin, copyout, copyinstrRobert Morris1-0/+92
2020-08-10Change tf -> trapframe in a few commentsFrans Kaashoek1-6/+6
2020-08-10modify each page in usertests countfree()Robert Morris4-9/+11
get rid of static for walk() and freewalk()
2020-08-10defines for UART register bitsRobert Morris1-13/+21
2020-08-10fix printf() in interruptsRobert Morris3-25/+29
2020-08-10interrupt-driven uart output, hopefully a nice example for teaching.Robert Morris5-18/+100
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