My lab implementation of 6.828 2018 OS course of MIT.
All labs are finished. (Lab 4 & Lab6 without challenge questions).
Check complete source code here: https://github.com/k0Iry/6.828_2018_mit_jos
Build a docker image for this course:
docker build --tag 6.828 .
docker run -d --name=6.828 -v /local/path/to/6.828/:/usr/src/app --rm -it kljsandjb/6.828:latest
Recommend to use remote container of Visual Studio Code.
On macOS or Windows, the performance of IO in docker container is really bad, so the compile & run time could be much longer than on the host.
On macOS, I built the tool chain, to use:
brew tap k0Iry/i386-jos-toolchains
brew install i386-jos-elf-gcc i386-jos-elf-gdb
But still you need to compile the 6.828 QEMU here: https://pdos.csail.mit.edu/6.828/2018/tools.html
JOS: 
irytu@Irys-MBP ~/D/6/lab (lab2)> cat ../../grade-lab2.txt /Applications/Xcode.app/Contents/Developer/usr/bin/make clean
+ mk obj/kern/kernel.img
running JOS: (1.2s)
Physical page allocator: OK
Page management: OK
Kernel page directory: OK
Page management 2: OK
Score: 70/70
make[1]: Leaving directory '/usr/src/app/lab'
divzero: OK (13.4s)
softint: OK (9.8s)
badsegment: OK (10.8s)
Part A score: 30/30
faultread: OK (14.2s)
faultreadkernel: OK (9.8s)
faultwrite: OK (8.4s)
faultwritekernel: OK (11.0s)
breakpoint: OK (11.5s)
testbss: OK (11.6s)
hello: OK (9.9s)
buggyhello: OK (10.7s)
buggyhello2: OK (10.3s)
evilhello: OK (9.4s)
Part B score: 50/50
Score: 80/80
make[1]: Leaving directory '/usr/src/app/lab'
dumbfork: OK (13.3s)
Part A score: 5/5
faultread: OK (12.8s)
faultwrite: OK (11.9s)
faultdie: OK (10.6s)
faultregs: OK (10.8s)
faultalloc: OK (10.7s)
faultallocbad: OK (12.9s)
faultnostack: OK (11.7s)
faultbadhandler: OK (11.9s)
faultevilhandler: OK (10.6s)
forktree: OK (13.2s)
Part B score: 50/50
spin: OK (13.1s)
stresssched: OK (12.3s)
sendpage: OK (11.2s)
pingpong: OK (9.7s)
primes: OK (13.3s)
Part C score: 25/25
Score: 80/80
+ mk obj/fs/clean-fs.img
+ cp obj/fs/clean-fs.img obj/fs/fs.img
make[1]: Leaving directory '/usr/src/app/lab'
internal FS tests [fs/test.c]: OK (18.3s)
fs i/o: OK
check_bc: OK
check_super: OK
check_bitmap: OK
alloc_block: OK
file_open: OK
file_get_block: OK
file_flush/file_truncate/file rewrite: OK
testfile: OK (18.0s)
serve_open/file_stat/file_close: OK
file_read: OK
file_write: OK
file_read after file_write: OK
open: OK
large file: OK
spawn via spawnhello: OK (14.5s)
Protection I/O space: OK (15.3s)
PTE_SHARE [testpteshare]: OK (15.3s)
PTE_SHARE [testfdsharing]: OK (18.5s)
start the shell [icode]: Timeout! OK (44.0s)
testshell: OK (15.9s)
primespipe: OK (22.6s)
Score: 150/150
make[1]: Leaving directory '/home/runner/work/6.828_2018_mit_jos/6.828_2018_mit_jos'
testtime: OK (7.6s)
pci attach: OK (0.7s)
testoutput [5 packets]: OK (1.5s)
testoutput [100 packets]: OK (1.1s)
Part A score: 35/35
testinput [5 packets]: OK (1.1s)
testinput [100 packets]: OK (1.1s)
tcp echo server [echosrv]: OK (1.8s)
web server [httpd]:
http://localhost:26003/: OK (1.0s)
http://localhost:26003/index.html: OK (1.8s)
http://localhost:26003/random_file.txt: OK (1.1s)
Part B score: 70/70
Score: 105/105
XV6:
see homework folder