diff --git a/.github/workflows/validate_scmls.yml b/.github/workflows/validate_scmls.yml
index dc9cd24dc..fb618091d 100644
--- a/.github/workflows/validate_scmls.yml
+++ b/.github/workflows/validate_scmls.yml
@@ -5,13 +5,13 @@ on:
   pull_request:
     paths:
       - tools/sctrace/**
-      - book/src/kernel/linux-compatibility/syscall-feature-coverage/**
+      - book/src/kernel/linux-compatibility/syscall-flag-coverage/**
   push:
     branches:
       - main
     paths:
       - tools/sctrace/**
-      - book/src/kernel/linux-compatibility/syscall-feature-coverage/**
+      - book/src/kernel/linux-compatibility/syscall-flag-coverage/**
 
 jobs:
   validate_scmls:
diff --git a/CODEOWNERS b/CODEOWNERS
index 552045cb8..d6d264907 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -28,7 +28,7 @@
 #=============================================================================
 
 /book/                          @tatetian
-/book/src/kernel/linux-compatibility/syscall-feature-coverage/ @tatetian @taosue
+/book/src/kernel/linux-compatibility/syscall-flag-coverage/ @tatetian @taosue
 
 #=============================================================================
 # The Asterinas kernel
diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md
index 0dbf43af6..81c2bb76e 100644
--- a/book/src/SUMMARY.md
+++ b/book/src/SUMMARY.md
@@ -9,18 +9,18 @@
     * [Intel TDX](kernel/intel_tdx.md)
 * [The Framekernel Architecture](kernel/the-framekernel-architecture.md)
 * [Linux Compatibility](kernel/linux-compatibility/README.md)
-    * [Syscall Feature Coverage](kernel/linux-compatibility/syscall-feature-coverage/README.md)
-        * [System Call Matching Language (SCML)](kernel/linux-compatibility/syscall-feature-coverage/system-call-matching-language.md)
-        * [Process and thread management](kernel/linux-compatibility/syscall-feature-coverage/process-and-thread-management/README.md)
-        * [Memory management](kernel/linux-compatibility/syscall-feature-coverage/memory-management/README.md)
-        * [File & directory operations](kernel/linux-compatibility/syscall-feature-coverage/file-and-directory-operations/README.md)
-        * [File systems & mount control](kernel/linux-compatibility/syscall-feature-coverage/file-systems-and-mount-control/README.md)
-        * [File descriptor & I/O control](kernel/linux-compatibility/syscall-feature-coverage/file-descriptor-and-io-control/README.md)
-        * [Inter-process communication](kernel/linux-compatibility/syscall-feature-coverage/inter-process-communication/README.md)
-        * [Networking & sockets](kernel/linux-compatibility/syscall-feature-coverage/networking-and-sockets/README.md)
-        * [Signals & timers](kernel/linux-compatibility/syscall-feature-coverage/signals-and-timers/README.md)
-        * [Namespaces, cgroups & security](kernel/linux-compatibility/syscall-feature-coverage/namespaces-cgroups-and-security/README.md)
-        * [System information & misc](kernel/linux-compatibility/syscall-feature-coverage/system-information-and-misc/README.md)
+    * [Syscall Flag Coverage](kernel/linux-compatibility/syscall-flag-coverage/README.md)
+        * [System Call Matching Language (SCML)](kernel/linux-compatibility/syscall-flag-coverage/system-call-matching-language.md)
+        * [Process and thread management](kernel/linux-compatibility/syscall-flag-coverage/process-and-thread-management/README.md)
+        * [Memory management](kernel/linux-compatibility/syscall-flag-coverage/memory-management/README.md)
+        * [File & directory operations](kernel/linux-compatibility/syscall-flag-coverage/file-and-directory-operations/README.md)
+        * [File systems & mount control](kernel/linux-compatibility/syscall-flag-coverage/file-systems-and-mount-control/README.md)
+        * [File descriptor & I/O control](kernel/linux-compatibility/syscall-flag-coverage/file-descriptor-and-io-control/README.md)
+        * [Inter-process communication](kernel/linux-compatibility/syscall-flag-coverage/inter-process-communication/README.md)
+        * [Networking & sockets](kernel/linux-compatibility/syscall-flag-coverage/networking-and-sockets/README.md)
+        * [Signals & timers](kernel/linux-compatibility/syscall-flag-coverage/signals-and-timers/README.md)
+        * [Namespaces, cgroups & security](kernel/linux-compatibility/syscall-flag-coverage/namespaces-cgroups-and-security/README.md)
+        * [System information & misc](kernel/linux-compatibility/syscall-flag-coverage/system-information-and-misc/README.md)
     * [File System Coverage]()
 * [Roadmap](kernel/roadmap.md)
 
diff --git a/book/src/kernel/linux-compatibility/README.md b/book/src/kernel/linux-compatibility/README.md
index db79fad3b..e58b68d5b 100644
--- a/book/src/kernel/linux-compatibility/README.md
+++ b/book/src/kernel/linux-compatibility/README.md
@@ -18,23 +18,23 @@ At the time of writing,
 Asterinas supports over 225 Linux system calls for the x86-64 architecture,
 which are summarized in the table below.
 
-| Numbers | Names                  | Supported      | Feature Coverage |
+| Numbers | Names                  | Supported      | Flag Coverage |
 | ------- | ---------------------- | -------------- | --- |
 | 0       | read                   | ✅             | 💯 |
 | 1       | write                  | ✅             | 💯 |
-| 2       | open                   | ✅             | [⚠️](syscall-feature-coverage/file-and-directory-operations/#open-and-openat) |
+| 2       | open                   | ✅             | [⚠️](syscall-flag-coverage/file-and-directory-operations/#open-and-openat) |
 | 3       | close                  | ✅             | 💯 |
 | 4       | stat                   | ✅             | 💯 |
 | 5       | fstat                  | ✅             | 💯 |
 | 6       | lstat                  | ✅             | 💯 |
 | 7       | poll                   | ✅             | 💯 |
-| 8       | lseek                  | ✅             | [⚠️](syscall-feature-coverage/file-and-directory-operations/#lseek) |
-| 9       | mmap                   | ✅             | [⚠️](syscall-feature-coverage/memory-management/#mmap-and-munmap) |
-| 10      | mprotect               | ✅             | [⚠️](syscall-feature-coverage/memory-management/#mprotect) |
+| 8       | lseek                  | ✅             | [⚠️](syscall-flag-coverage/file-and-directory-operations/#lseek) |
+| 9       | mmap                   | ✅             | [⚠️](syscall-flag-coverage/memory-management/#mmap-and-munmap) |
+| 10      | mprotect               | ✅             | [⚠️](syscall-flag-coverage/memory-management/#mprotect) |
 | 11      | munmap                 | ✅             | 💯 |
 | 12      | brk                    | ✅             | 💯 |
-| 13      | rt_sigaction           | ✅             | [⚠️](syscall-feature-coverage/signals-and-timers/#rt_sigaction) |
-| 14      | rt_sigprocmask         | ✅             | [⚠️](syscall-feature-coverage/signals-and-timers/#rt_sigprocmask) |
+| 13      | rt_sigaction           | ✅             | [⚠️](syscall-flag-coverage/signals-and-timers/#rt_sigaction) |
+| 14      | rt_sigprocmask         | ✅             | [⚠️](syscall-flag-coverage/signals-and-timers/#rt_sigprocmask) |
 | 15      | rt_sigreturn           | ✅             | 💯 |
 | 16      | ioctl                  | ✅             | ❓ |
 | 17      | pread64                | ✅             | 💯 |
@@ -45,10 +45,10 @@ which are summarized in the table below.
 | 22      | pipe                   | ✅             | 💯 |
 | 23      | select                 | ✅             | ❓ |
 | 24      | sched_yield            | ✅             | 💯 |
-| 25      | mremap                 | ✅             | [⚠️](syscall-feature-coverage/memory-management/#mremap) |
-| 26      | msync                  | ✅             | [⚠️](syscall-feature-coverage/memory-management/#msync) |
+| 25      | mremap                 | ✅             | [⚠️](syscall-flag-coverage/memory-management/#mremap) |
+| 26      | msync                  | ✅             | [⚠️](syscall-flag-coverage/memory-management/#msync) |
 | 27      | mincore                | ❌             | N/A |
-| 28      | madvise                | ✅             | [⚠️](syscall-feature-coverage/memory-management/#madvise) |
+| 28      | madvise                | ✅             | [⚠️](syscall-flag-coverage/memory-management/#madvise) |
 | 29      | shmget                 | ❌             | N/A |
 | 30      | shmat                  | ❌             | N/A |
 | 31      | shmctl                 | ❌             | N/A |
@@ -61,38 +61,38 @@ which are summarized in the table below.
 | 38      | setitimer              | ✅             | ❓ |
 | 39      | getpid                 | ✅             | 💯 |
 | 40      | sendfile               | ✅             | 💯 |
-| 41      | socket                 | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#socket) |
-| 42      | connect                | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#connect) |
+| 41      | socket                 | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#socket) |
+| 42      | connect                | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#connect) |
 | 43      | accept                 | ✅             | ❓ |
-| 44      | sendto                 | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#sendto-and-sendmsg) |
-| 45      | recvfrom               | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#recvfrom-and-recvmsg) |
-| 46      | sendmsg                | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#sendto-and-sendmsg) |
-| 47      | recvmsg                | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#recvfrom-and-recvmsg) |
+| 44      | sendto                 | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#sendto-and-sendmsg) |
+| 45      | recvfrom               | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#recvfrom-and-recvmsg) |
+| 46      | sendmsg                | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#sendto-and-sendmsg) |
+| 47      | recvmsg                | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#recvfrom-and-recvmsg) |
 | 48      | shutdown               | ✅             | ❓ |
-| 49      | bind                   | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#bind) |
+| 49      | bind                   | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#bind) |
 | 50      | listen                 | ✅             | ❓ |
 | 51      | getsockname            | ✅             | 💯 |
 | 52      | getpeername            | ✅             | ❓ |
-| 53      | socketpair             | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#socketpair) |
-| 54      | setsockopt             | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#getsockopt-and-setsockopt) |
-| 55      | getsockopt             | ✅             | [⚠️](syscall-feature-coverage/networking-and-sockets/#getsockopt-and-setsockopt) |
-| 56      | clone                  | ✅             | [⚠️](syscall-feature-coverage/process-and-thread-management/#clone) |
+| 53      | socketpair             | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#socketpair) |
+| 54      | setsockopt             | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#getsockopt-and-setsockopt) |
+| 55      | getsockopt             | ✅             | [⚠️](syscall-flag-coverage/networking-and-sockets/#getsockopt-and-setsockopt) |
+| 56      | clone                  | ✅             | [⚠️](syscall-flag-coverage/process-and-thread-management/#clone) |
 | 57      | fork                   | ✅             | 💯 |
 | 58      | vfork                  | ❌             | N/A |
 | 59      | execve                 | ✅             | 💯 |
 | 60      | exit                   | ✅             | 💯 |
-| 61      | wait4                  | ✅             | [⚠️](syscall-feature-coverage/process-and-thread-management/#wait4) |
+| 61      | wait4                  | ✅             | [⚠️](syscall-flag-coverage/process-and-thread-management/#wait4) |
 | 62      | kill                   | ✅             | 💯 |
 | 63      | uname                  | ✅             | 💯 |
-| 64      | semget                 | ✅             | [⚠️](syscall-feature-coverage/inter-process-communication/#semget) |
-| 65      | semop                  | ✅             | [⚠️](syscall-feature-coverage/inter-process-communication/#semop-and-semtimedop) |
-| 66      | semctl                 | ✅             | [⚠️](syscall-feature-coverage/inter-process-communication/#semctl) |
+| 64      | semget                 | ✅             | [⚠️](syscall-flag-coverage/inter-process-communication/#semget) |
+| 65      | semop                  | ✅             | [⚠️](syscall-flag-coverage/inter-process-communication/#semop-and-semtimedop) |
+| 66      | semctl                 | ✅             | [⚠️](syscall-flag-coverage/inter-process-communication/#semctl) |
 | 67      | shmdt                  | ❌             | N/A |
 | 68      | msgget                 | ❌             | N/A |
 | 69      | msgsnd                 | ❌             | N/A |
 | 70      | msgrcv                 | ❌             | N/A |
 | 71      | msgctl                 | ❌             | N/A |
-| 72      | fcntl                  | ✅             | [⚠️](syscall-feature-coverage/file-descriptor-and-io-control/#fcntl) |
+| 72      | fcntl                  | ✅             | [⚠️](syscall-flag-coverage/file-descriptor-and-io-control/#fcntl) |
 | 73      | flock                  | ✅             | ❓ |
 | 74      | fsync                  | ✅             | 💯 |
 | 75      | fdatasync              | ✅             | 💯 |
@@ -118,7 +118,7 @@ which are summarized in the table below.
 | 95      | umask                  | ✅             | 💯 |
 | 96      | gettimeofday           | ✅             | 💯 |
 | 97      | getrlimit              | ✅             | ❓ |
-| 98      | getrusage              | ✅             | [⚠️](syscall-feature-coverage/system-information-and-misc/#getrusage) |
+| 98      | getrusage              | ✅             | [⚠️](syscall-flag-coverage/system-information-and-misc/#getrusage) |
 | 99      | sysinfo                | ✅             | 💯 |
 | 100     | times                  | ❌             | N/A |
 | 101     | ptrace                 | ❌             | N/A |
@@ -145,8 +145,8 @@ which are summarized in the table below.
 | 122     | setfsuid               | ✅             | 💯 |
 | 123     | setfsgid               | ✅             | 💯 |
 | 124     | getsid                 | ✅             | 💯 |
-| 125     | capget                 | ✅             | [⚠️](syscall-feature-coverage/namespaces-cgroups-and-security/#capget-and-capset) |
-| 126     | capset                 | ✅             | [⚠️](syscall-feature-coverage/namespaces-cgroups-and-security/#capget-and-capset) |
+| 125     | capget                 | ✅             | [⚠️](syscall-flag-coverage/namespaces-cgroups-and-security/#capget-and-capset) |
+| 126     | capset                 | ✅             | [⚠️](syscall-flag-coverage/namespaces-cgroups-and-security/#capget-and-capset) |
 | 127     | rt_sigpending          | ✅             | 💯 |
 | 128     | rt_sigtimedwait        | ❌             | N/A |
 | 129     | rt_sigqueueinfo        | ❌             | N/A |
@@ -177,19 +177,19 @@ which are summarized in the table below.
 | 154     | modify_ldt             | ❌             | N/A |
 | 155     | pivot_root             | ❌             | N/A |
 | 156     | _sysctl                | ❌             | N/A |
-| 157     | prctl                  | ✅             | [⚠️](syscall-feature-coverage/namespaces-cgroups-and-security/#prctl) |
-| 158     | arch_prctl             | ✅             | [⚠️](syscall-feature-coverage/system-information-and-misc/#arch_prctl) |
+| 157     | prctl                  | ✅             | [⚠️](syscall-flag-coverage/namespaces-cgroups-and-security/#prctl) |
+| 158     | arch_prctl             | ✅             | [⚠️](syscall-flag-coverage/system-information-and-misc/#arch_prctl) |
 | 159     | adjtimex               | ❌             | N/A |
 | 160     | setrlimit              | ✅             | ❓ |
 | 161     | chroot                 | ✅             | 💯 |
 | 162     | sync                   | ✅             | 💯 |
 | 163     | acct                   | ❌             | N/A |
 | 164     | settimeofday           | ❌             | N/A |
-| 165     | mount                  | ✅             | [⚠️](syscall-feature-coverage/file-systems-and-mount-control/#mount) |
-| 166     | umount2                | ✅             | [⚠️](syscall-feature-coverage/file-systems-and-mount-control/#umount-and-umount2) |
+| 165     | mount                  | ✅             | [⚠️](syscall-flag-coverage/file-systems-and-mount-control/#mount) |
+| 166     | umount2                | ✅             | [⚠️](syscall-flag-coverage/file-systems-and-mount-control/#umount-and-umount2) |
 | 167     | swapon                 | ❌             | N/A |
 | 168     | swapoff                | ❌             | N/A |
-| 169     | reboot                 | ✅             | [⚠️](syscall-feature-coverage/system-information-and-misc/#reboot) |
+| 169     | reboot                 | ✅             | [⚠️](syscall-flag-coverage/system-information-and-misc/#reboot) |
 | 170     | sethostname            | ✅             | 💯 |
 | 171     | setdomainname          | ✅             | 💯 |
 | 172     | iopl                   | ❌             | N/A |
@@ -222,7 +222,7 @@ which are summarized in the table below.
 | 199     | fremovexattr           | ✅             | 💯 |
 | 200     | tkill                  | ❌             | N/A |
 | 201     | time                   | ✅             | 💯 |
-| 202     | futex                  | ✅             | [⚠️](syscall-feature-coverage/inter-process-communication/#futex) |
+| 202     | futex                  | ✅             | [⚠️](syscall-flag-coverage/inter-process-communication/#futex) |
 | 203     | sched_setaffinity      | ✅             | 💯 |
 | 204     | sched_getaffinity      | ✅             | 💯 |
 | 205     | set_thread_area        | ❌             | N/A |
@@ -240,17 +240,17 @@ which are summarized in the table below.
 | 217     | getdents64             | ✅             | 💯 |
 | 218     | set_tid_address        | ✅             | 💯 |
 | 219     | restart_syscall        | ❌             | N/A |
-| 220     | semtimedop             | ✅             | [⚠️](syscall-feature-coverage/inter-process-communication/#semop-and-semtimedop) |
+| 220     | semtimedop             | ✅             | [⚠️](syscall-flag-coverage/inter-process-communication/#semop-and-semtimedop) |
 | 221     | fadvise64              | ✅             | ❓ |
-| 222     | timer_create           | ✅             | [⚠️](syscall-feature-coverage/signals-and-timers/#timer_create) |
+| 222     | timer_create           | ✅             | [⚠️](syscall-flag-coverage/signals-and-timers/#timer_create) |
 | 223     | timer_settime          | ✅             | ❓ |
 | 224     | timer_gettime          | ✅             | 💯 |
 | 225     | timer_getoverrun       | ❌             | N/A |
 | 226     | timer_delete           | ✅             | 💯 |
 | 227     | clock_settime          | ❌             | N/A |
-| 228     | clock_gettime          | ✅             | [⚠️](syscall-feature-coverage/system-information-and-misc/#clock_gettime) |
+| 228     | clock_gettime          | ✅             | [⚠️](syscall-flag-coverage/system-information-and-misc/#clock_gettime) |
 | 229     | clock_getres           | ❌             | N/A |
-| 230     | clock_nanosleep        | ✅             | [⚠️](syscall-feature-coverage/system-information-and-misc/#clock_nanosleep) |
+| 230     | clock_nanosleep        | ✅             | [⚠️](syscall-flag-coverage/system-information-and-misc/#clock_nanosleep) |
 | 231     | exit_group             | ✅             | 💯 |
 | 232     | epoll_wait             | ✅             | ❓ |
 | 233     | epoll_ctl              | ✅             | ❓ |
@@ -274,15 +274,15 @@ which are summarized in the table below.
 | 251     | ioprio_set             | ✅             | ❓ |
 | 252     | ioprio_get             | ✅             | ❓ |
 | 253     | inotify_init           | ✅             | 💯 |
-| 254     | inotify_add_watch      | ✅             | [⚠️](syscall-feature-coverage/file-systems-and-mount-control/#inotify_add_watch) |
+| 254     | inotify_add_watch      | ✅             | [⚠️](syscall-flag-coverage/file-systems-and-mount-control/#inotify_add_watch) |
 | 255     | inotify_rm_watch       | ✅             | 💯 |
 | 256     | migrate_pages          | ❌             | N/A |
-| 257     | openat                 | ✅             | [⚠️](syscall-feature-coverage/file-and-directory-operations/#open-and-openat) |
+| 257     | openat                 | ✅             | [⚠️](syscall-flag-coverage/file-and-directory-operations/#open-and-openat) |
 | 258     | mkdirat                | ✅             | 💯 |
 | 259     | mknodat                | ✅             | 💯 |
 | 260     | fchownat               | ✅             | ❓ |
 | 261     | futimesat              | ✅             | 💯 |
-| 262     | newfstatat             | ✅             | [⚠️](syscall-feature-coverage/file-and-directory-operations/#newfstatat) |
+| 262     | newfstatat             | ✅             | [⚠️](syscall-flag-coverage/file-and-directory-operations/#newfstatat) |
 | 263     | unlinkat               | ✅             | ❓ |
 | 264     | renameat               | ✅             | ❓ |
 | 265     | linkat                 | ✅             | ❓ |
@@ -310,11 +310,11 @@ which are summarized in the table below.
 | 287     | timerfd_gettime        | ✅             | 💯 |
 | 288     | accept4                | ✅             | ❓ |
 | 289     | signalfd4              | ✅             | ❓ |
-| 290     | eventfd2               | ✅             | [⚠️](syscall-feature-coverage/file-descriptor-and-io-control/#eventfd-and-eventfd2) |
+| 290     | eventfd2               | ✅             | [⚠️](syscall-flag-coverage/file-descriptor-and-io-control/#eventfd-and-eventfd2) |
 | 291     | epoll_create1          | ✅             | ❓ |
 | 292     | dup3                   | ✅             | 💯 |
-| 293     | pipe2                  | ✅             | [⚠️](syscall-feature-coverage/file-descriptor-and-io-control/#pipe-and-pipe2) |
-| 294     | inotify_init1          | ✅             | [⚠️](syscall-feature-coverage/file-systems-and-mount-control/#inotify_init-and-inotify_init1) |
+| 293     | pipe2                  | ✅             | [⚠️](syscall-flag-coverage/file-descriptor-and-io-control/#pipe-and-pipe2) |
+| 294     | inotify_init1          | ✅             | [⚠️](syscall-flag-coverage/file-systems-and-mount-control/#inotify_init-and-inotify_init1) |
 | 295     | preadv                 | ✅             | 💯 |
 | 296     | pwritev                | ✅             | 💯 |
 | 297     | rt_tgsigqueueinfo      | ❌             | N/A |
@@ -334,10 +334,10 @@ which are summarized in the table below.
 | 311     | process_vm_writev      | ❌             | N/A |
 | 312     | kcmp                   | ❌             | N/A |
 | 313     | finit_module           | ❌             | N/A |
-| 314     | sched_setattr          | ✅             | [⚠️](syscall-feature-coverage/process-and-thread-management/#sched_getattr-and-sched_setattr) |
-| 315     | sched_getattr          | ✅             | [⚠️](syscall-feature-coverage/process-and-thread-management/#sched_getattr-and-sched_setattr) |
-| 316     | renameat2              | ✅             | [⚠️](syscall-feature-coverage/file-and-directory-operations/#renameat2) |
-| 318     | getrandom              | ✅             | [⚠️](syscall-feature-coverage/system-information-and-misc/#getrandom) |
+| 314     | sched_setattr          | ✅             | [⚠️](syscall-flag-coverage/process-and-thread-management/#sched_getattr-and-sched_setattr) |
+| 315     | sched_getattr          | ✅             | [⚠️](syscall-flag-coverage/process-and-thread-management/#sched_getattr-and-sched_setattr) |
+| 316     | renameat2              | ✅             | [⚠️](syscall-flag-coverage/file-and-directory-operations/#renameat2) |
+| 318     | getrandom              | ✅             | [⚠️](syscall-flag-coverage/system-information-and-misc/#getrandom) |
 | 319     | memfd_create           | ✅             | ❓ |
 | 322     | execveat               | ✅             | ❓ |
 | 327     | preadv2                | ✅             | ❓ |
@@ -353,7 +353,7 @@ which are summarized in the table below.
     - ✅ = syscall supported
     - ❌ = not supported
 
-- Feature Coverage:
+- Flag Coverage:
     - 💯 = all flags/commands/modes are supported
     - ⚠️ = syscall works, but some flags/modes are not implemented
     - ❓ = implementation exists, but we have not audited its coverage yet
diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/README.md b/book/src/kernel/linux-compatibility/syscall-flag-coverage/README.md
similarity index 80%
rename from book/src/kernel/linux-compatibility/syscall-feature-coverage/README.md
rename to book/src/kernel/linux-compatibility/syscall-flag-coverage/README.md
index dbd55ce05..f362fc044 100644
--- a/book/src/kernel/linux-compatibility/syscall-feature-coverage/README.md
+++ b/book/src/kernel/linux-compatibility/syscall-flag-coverage/README.md
@@ -1,7 +1,7 @@
-# Syscall Feature Coverage
+# Syscall Flag Coverage
 
-This section documents the feature coverage of Asterinas's implementation of Linux system calls.
-It introduce [**System Call Matching Language (SCML)**](system-call-matching-language.md),
+This section documents the flag coverage of Asterinas's implementation of Linux system calls.
+It introduces [**System Call Matching Language (SCML)**](system-call-matching-language.md),
 a lightweight domain‑specific language for
 specifying allowed and disallowed patterns of system‑call invocations.
 
diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/file-and-directory-operations/README.md b/book/src/kernel/linux-compatibility/syscall-flag-coverage/file-and-directory-operations/README.md
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/process-and-thread-management/wait4.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/process-and-thread-management/wait4.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/signals-and-timers/README.md b/book/src/kernel/linux-compatibility/syscall-flag-coverage/signals-and-timers/README.md
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/signals-and-timers/fully_supported.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/signals-and-timers/fully_covered.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/signals-and-timers/rt_sigaction.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/signals-and-timers/rt_sigaction.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/signals-and-timers/rt_sigprocmask.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/signals-and-timers/rt_sigprocmask.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/signals-and-timers/timer_create.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/signals-and-timers/timer_create.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/system-call-matching-language.md b/book/src/kernel/linux-compatibility/syscall-flag-coverage/system-call-matching-language.md
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/system-information-and-misc/arch_prctl.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/system-information-and-misc/arch_prctl.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/system-information-and-misc/clock_gettime.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/system-information-and-misc/clock_gettime.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/system-information-and-misc/clock_nanosleep.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/system-information-and-misc/clock_nanosleep.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/system-information-and-misc/getrandom.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/system-information-and-misc/getrandom.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/system-information-and-misc/getrusage.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/system-information-and-misc/getrusage.scml
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diff --git a/book/src/kernel/linux-compatibility/syscall-feature-coverage/system-information-and-misc/reboot.scml b/book/src/kernel/linux-compatibility/syscall-flag-coverage/system-information-and-misc/reboot.scml
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diff --git a/tools/sctrace/README.md b/tools/sctrace/README.md
index 628b765e8..a993542ea 100644
--- a/tools/sctrace/README.md
+++ b/tools/sctrace/README.md
@@ -3,7 +3,7 @@
 Syscall Compatibility Tracer (`sctrace`) is a powerful system call compatibility
 verification tool that analyzes and validates system call against user-defined
 patterns. Written in
-[SCML (System Call Matching Language)](https://asterinas.github.io/book/kernel/linux-compatibility/syscall-feature-coverage/system-call-matching-language.html),
+[SCML (System Call Matching Language)](https://asterinas.github.io/book/kernel/linux-compatibility/syscall-flag-coverage/system-call-matching-language.html),
 these patterns describe supported functionality of system calls.
 `sctrace` supports both real-time monitoring of running programs and post-analysis of
 existing trace logs, providing comprehensive insights into system call compatibility
@@ -131,7 +131,7 @@ sctrace network.scml -- curl http://example.com
 
 ### Example 3: Using Asterinas Compatibility Patterns
 
-Use the provided directory [syscall-feature-coverage](../../book/src/kernel/linux-compatibility/syscall-feature-coverage) (work in progress) and
+Use the provided directory [syscall-flag-coverage](../../book/src/kernel/linux-compatibility/syscall-flag-coverage) (work in progress) and
 test with various commands:
 
 ```bash