Imbus/xv6-riscv-kernel
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233 commits

Author SHA1 Message Date
Robert Morris
ed101befee comment the sfences 2022-08-24 13:47:47 -04:00
Robert Morris
581bc4cbd1 sfence before enabling paging 2022-08-24 13:42:59 -04:00
Robert Morris
29ce3161f8 Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2022-08-24 13:24:37 -04:00
Robert Morris
9c1b8a4eb0 sfence before writing satp, as well as after 2022-08-24 13:24:24 -04:00
Frans Kaashoek
cc486ddee0 Help students read this C syntax 2022-08-24 08:57:56 -04:00
Robert Morris
96047832c6 Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2022-08-23 12:26:39 -04:00
Robert Morris
7c1810e1ae tolerate running out of inodes 2022-08-23 12:26:26 -04:00
Frans Kaashoek
ac8c0bb177 x 2022-08-23 11:56:29 -04:00
Frans Kaashoek
858fc68bdf Linker script makes binaries bigger; use larger disk so that usertests 
can run.

Must assumed_free in badwrite() be adjusted?
 2022-08-23 11:19:33 -04:00
Frans Kaashoek
ccb7bd14c7 Merge branch 'riscv' into uvm-perm 2022-08-23 11:01:06 -04:00
Frans Kaashoek
4cd4d194b8 Use simple linker script to force data segment to be page aligned 2022-08-23 10:54:40 -04:00
Robert Morris
8621be8f3d tolerate out of disk when creating . and .. in mkdir() 2022-08-23 08:52:15 -04:00
Robert Morris
dc405cdb7b don't panic if out of disk space when extending a directory. 2022-08-23 08:23:12 -04:00
Frans Kaashoek
cd6207a972 Merge branch 'riscv-killed' into riscv 2022-08-23 07:31:08 -04:00
Frans Kaashoek
2f0b4d698b Use pp instead of np to be more consistent 2022-08-22 19:58:33 -04:00
Frans Kaashoek
2a391ebc8b Make argint() and argaddr() of type void (thanks Harry Porter) 2022-08-22 19:53:09 -04:00
Frans Kaashoek
7086197c27 Simplify uartputc slightly (thanks Harry Porter) 2022-08-22 19:36:11 -04:00
Robert Morris
63ef3b8c9f slightly better comments 2022-08-22 13:49:15 -04:00
Frans Kaashoek
1d4c437ea1 Use uint64 (thanks carlclone and Harry Porter) 2022-08-17 20:37:22 -04:00
Frans Kaashoek
cef1b57d4a Compile user binary to map text without W and data without X 
Use the flags in elf header to set vm permissions
Modify pgbug() so that usertests text segment is without W
Add test to check app cannot write text segment
 2022-08-15 19:02:19 -04:00
Frans Kaashoek
7a6d57235c Costmestic change (thanks Harry Porter) 2022-08-12 14:59:30 -04:00
Frans Kaashoek
899cc02660 Experiment with being more precise setting permissions for user pages. 
Growing adds R|W pages (without X).  Exec() marks the stack only R|W.

Probably could setup permissions for text and data better if we call
ld with --no-omagic instead of -N.
 2022-08-12 13:22:10 -04:00
Frans Kaashoek
8f58cc7df9 Cosmetic change (thanks Harry Porter) 2022-08-12 12:59:33 -04:00
Frans Kaashoek
62bc610424 cosmetic changes (thanks Harry Porter) 2022-08-12 11:47:39 -04:00
Frans Kaashoek
dd5a720044 cosmetic changes (thanks Harry Porter) 2022-08-12 10:57:16 -04:00
Frans Kaashoek
8bd04852c9 Delete rtcdate, which is a left-over from an old lab (thanks Harry Porter) 2022-08-12 09:43:18 -04:00
Frans Kaashoek
48d1a7ffa5 Add USED to states (thanks Harry Porter) 2022-08-12 09:14:54 -04:00
Frans Kaashoek
4f716c8550 Use p->lock to read p->killed 2022-08-11 14:22:00 -04:00
Frans Kaashoek
429c7b717e Use atomic store_n and load_n 2022-08-11 08:42:52 -04:00
Frans Kaashoek
975f3b31d3 Clean up using killed() 2022-08-11 07:23:17 -04:00
Frans Kaashoek
4087a6e7fc Read and write p->killed using atomics 2022-08-10 20:35:42 -04:00
Robert Morris
c908d20132 put walk() in defs.h so it's clear students can call it 2022-08-10 07:21:50 -04:00
Robert Morris
872fa88e8a tolerate running out of disk blocks 2022-08-10 06:13:52 -04:00
Robert Morris
7d573bae2a Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2022-08-10 06:00:57 -04:00
Robert Morris
f4b3edf5ab comment nits 2022-08-10 06:00:40 -04:00
WaheedHafez
9f3673c4da fix 'kfree' comment in kalloc.c 
'kfree' has a parameter named 'pa' but referenced in the comment as 'v'.
 2022-08-09 20:29:38 -04:00
Ravjot Singh Samra
a2e4051b99 Added missing va_end(). 2022-08-09 20:20:32 -04:00
Robert Morris
7d8bfdcbe3 nothing much 2022-08-09 15:11:25 -04:00
Robert Morris
27a669ef25 comment nits 2022-08-09 14:17:46 -04:00
Robert Morris
af9abaca05 Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2022-08-09 13:41:51 -04:00
Robert Morris
3abd7a16dd comment 2022-08-09 13:41:45 -04:00
Robert Morris
cf0c095721 sscratch cleanup 2022-08-09 12:14:29 -04:00
Robert Morris
9fc9f755e1 adopt github PR98 (No need to store TRAPFRAME in sscratch register) 2022-08-09 11:44:02 -04:00
Robert Morris
ca6fc54934 tweak virtio comments 2022-08-08 11:10:54 -04:00
Xi Wang
cd00a8233a port virtio_disk to virtio spec 1.0+ 
The legacy interface is confusing. It's better to make virtio_disk
conform to the virtio spec. This is supported in QEMU since 4.2 by
disabling force-legacy for virtio-mmio.
 2021-10-17 23:05:09 -07:00
Frans Kaashoek
8ca56e9e0b memmove(dst, src, 0) leads to overflow in while(n-- > 0) as n is uint64 (thanks 
Matúš Jókay <matus.jokay@stuba.sk>)
 2021-09-01 07:29:12 -04:00
yzhu
a103113db0 fix ld warning: undefined symbol _entry 2021-08-31 20:58:58 -04:00
Pavan Maddamsetti
e07ca66145 comment 2021-08-31 14:27:33 -04:00
l0stman
19ff379661 exec() only accepts MAXARG arguments 
The terminating NULL string is already included (see sys_exec()).
 2021-08-31 14:26:43 -04:00
l0stman
9195142959 Assert that the size in mappages() is always positive 
If va % PGSIZE == 0 and size == 0, we have last < a at the start of
the loop so we might never terminate.  That being said, this
particular case couldn't be triggered for now.
 2021-08-31 14:20:32 -04:00