Gate behind a feature flag

Cargo.toml

@@ -81,6 +81,7 @@ default = [
   "acpi",
   #"debugger",
   "multi_core",
+  # "numa",
   "serial_debug",
   "self_modifying",
   "x86_kvm_pv",
@@ -95,6 +96,7 @@ self_modifying = []
 acpi = []
 lpss_debug = []
 multi_core = ["acpi"]
+numa = ["multi_core"]
 profiling = []
 #TODO: remove when threading issues are fixed
 pti = []

src/acpi/mod.rs

@@ -20,11 +20,11 @@ mod rsdp;
 mod rsdt;
 mod rxsdt;
 pub mod sdt;
-#[cfg(any(target_arch = "x86", target_arch = "x86_64", target_arch = "aarch64"))]
+#[cfg(feature = "numa")]
 pub mod slit;
 #[cfg(target_arch = "aarch64")]
 mod spcr;
-#[cfg(any(target_arch = "x86", target_arch = "x86_64", target_arch = "aarch64"))]
+#[cfg(feature = "numa")]
 pub mod srat;
 mod xsdt;
 

src/main.rs

@@ -69,6 +69,7 @@ mod log;
 mod memory;
 
 /// NUMA support
+#[cfg(feature = "numa")]
 mod numa;
 
 /// Panic

src/numa.rs

@@ -1,9 +1,5 @@
-#[cfg(all(
-    feature = "acpi",
-    any(target_arch = "x86", target_arch = "x86_64", target_arch = "aarch64")
-))]
-use crate::acpi;
 use crate::{
+    acpi,
     cpu_set::LogicalCpuId,
     sync::{CleanLockToken, Mutex, L0},
 };
@@ -41,10 +37,7 @@ pub fn init() {
     NUMA_NODES.call_once(|| HashMap::new());
     let mut flag = false;
 
-    #[cfg(all(
-        feature = "acpi",
-        any(target_arch = "x86", target_arch = "x86_64", target_arch = "aarch64")
-    ))]
+    #[cfg(any(target_arch = "x86", target_arch = "x86_64", target_arch = "aarch64"))]
     {
         acpi::srat::init();
         acpi::slit::init();

src/percpu.rs

@@ -19,7 +19,6 @@ use crate::{
     },
     cpu_set::{LogicalCpuId, MAX_CPU_COUNT},
     cpu_stats::{CpuStats, CpuStatsData},
-    numa::NumaNode,
     ptrace::Session,
     syscall::debug::SyscallDebugInfo,
 };

src/startup/mod.rs

@@ -9,11 +9,13 @@ use crate::{
     arch::interrupt,
     context::{self, switch::SwitchResult},
     memory::{PhysicalAddress, RmmA, RmmArch},
-    numa::{self, NUMA_NODES},
     profiling, scheme,
     sync::CleanLockToken,
 };
 
+#[cfg(feature = "numa")]
+use crate::numa;
+
 pub mod memory;
 
 #[repr(C, packed(8))]
@@ -187,6 +189,7 @@ pub(crate) fn kmain(bootstrap: Bootstrap) -> ! {
         }
     }
 
+    #[cfg(feature = "numa")]
     numa::init();
 
     run_userspace(&mut token)