This is the content of file README.
"sysfile.c" did not exist on "8a8be1b8c36e38f58f8ba3e425b6e701ad65abf3"
fix acquire() to cli() *before* incrementing nlock make T_SYSCALL a trap gate, not an interrupt gate sadly, various crashes if you hold down a keyboard key...
This is the content of file README.