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serenity/Kernel/Syscalls
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Andreas Kling 2d1a651e0a Kernel: Make purgeable memory a VMObject level concept (again) 
This patch changes the semantics of purgeable memory.

- AnonymousVMObject now has a "purgeable" flag. It can only be set when
  constructing the object. (Previously, all anonymous memory was
  effectively purgeable.)

- AnonymousVMObject now has a "volatile" flag. It covers the entire
  range of physical pages. (Previously, we tracked ranges of volatile
  pages, effectively making it a page-level concept.)

- Non-volatile objects maintain a physical page reservation via the
  committed pages mechanism, to ensure full coverage for page faults.

- When an object is made volatile, it relinquishes any unused committed
  pages immediately. If later made non-volatile again, we then attempt
  to make a new committed pages reservation. If this fails, we return
  ENOMEM to userspace.

mmap() now creates purgeable objects if passed the MAP_PURGEABLE option
together with MAP_ANONYMOUS. anon_create() memory is always purgeable.
2021-07-25 17:28:05 +02:00
..
access.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
alarm.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
anon_create.cpp Kernel: Make purgeable memory a VMObject level concept (again) 2021-07-25 17:28:05 +02:00
beep.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
chdir.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
chmod.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
chown.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
chroot.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
clock.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
debug.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
disown.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
dup2.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
emuctl.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
execve.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
exit.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
fcntl.cpp Kernel+LibC: Implement fcntl(2) advisory locks 2021-07-20 17:44:30 +04:30
fork.cpp Everywhere: Prefix hexadecimal numbers with 0x 2021-07-22 08:57:01 +02:00
ftruncate.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
futex.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
get_dir_entries.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
get_stack_bounds.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
getrandom.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
getuid.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
hostname.cpp Kernel: Disable big process lock in sys$gethostname() sys$sethostname() 2021-07-20 03:21:14 +02:00
inode_watcher.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
ioctl.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
keymap.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
kill.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
link.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
lseek.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
mkdir.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
mknod.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
mmap.cpp Kernel: Make purgeable memory a VMObject level concept (again) 2021-07-25 17:28:05 +02:00
module.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
mount.cpp Kernel: Use StringView literals for fs_type match in sys$mount(..) 2021-07-23 19:02:25 +02:00
open.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
perf_event.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
pipe.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
pledge.cpp Kernel: Use StringView when parsing pledges in sys$pledge(..) 2021-07-23 19:02:25 +02:00
prctl.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
process.cpp Kernel: Disable big process lock for sys$getpid() 2021-07-20 03:21:14 +02:00
profiling.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
ptrace.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
purge.cpp Kernel: Make purgeable memory a VMObject level concept (again) 2021-07-25 17:28:05 +02:00
read.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
readlink.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
realpath.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
rename.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
rmdir.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
sched.cpp Kernel: Disable big process lock for sys$yield() 2021-07-20 03:21:14 +02:00
select.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
sendfd.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
setpgid.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
setuid.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
shutdown.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
sigaction.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
socket.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
stat.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
statvfs.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
sync.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
sysconf.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
thread.cpp Kernel: Disable big process lock for sys$gettid() 2021-07-20 03:21:14 +02:00
times.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
ttyname.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
umask.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
uname.cpp Kernel: Disable big process lock for sys$uname() 2021-07-20 03:21:14 +02:00
unlink.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
unveil.cpp Kernel: Migrate sys$unveil to use the KString API 2021-07-23 19:02:25 +02:00
utime.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
waitid.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00
write.cpp Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED 2021-07-20 03:21:14 +02:00