Remove no_threaded_syscalls feature

Cargo.toml

@@ -42,7 +42,7 @@ raw-cpuid = "8.0.0"
 x86 = { version = "0.32.0", default-features = false }
 
 [features]
-default = ["acpi", "multi_core", "no_threaded_syscalls", "serial_debug"]
+default = ["acpi", "multi_core", "serial_debug"]
 acpi = []
 doc = []
 graphical_debug = []
@@ -50,7 +50,6 @@ live = []
 lpss_debug = []
 multi_core = ["acpi"]
 #TODO: remove when threading issues are fixed
-no_threaded_syscalls = []
 pti = []
 qemu_debug = []
 serial_debug = []

src/syscall/mod.rs

@@ -253,17 +253,8 @@ pub fn syscall(a: usize, b: usize, c: usize, d: usize, e: usize, f: usize, bp: u
         }
     }
 
-    #[cfg(feature = "no_threaded_syscalls")]
-    let syscall_lock = {
-        static SYSCALL_LOCK: spin::Mutex<()> = spin::Mutex::new(());
-        SYSCALL_LOCK.lock();
-    };
-
     let result = inner(a, b, c, d, e, f, bp, stack);
 
-    #[cfg(feature = "no_threaded_syscalls")]
-    drop(syscall_lock);
-
     {
         let contexts = crate::context::contexts();
         if let Some(context_lock) = contexts.current() {