refactor(x86_64): extract TOTAL_MEMORY access

Signed-off-by: Martin Kröning <[email protected]>

src/arch/x86_64/mm/physicalmem.rs

@@ -108,23 +108,27 @@ fn detect_from_limits() -> Result<(), ()> {
 		return Err(());
 	}
 
+	let total_memory;
+
 	// add gap for the APIC
 	if limit > KVM_32BIT_GAP_START {
 		let entry = FreeListEntry::new(mm::kernel_end_address().as_usize(), KVM_32BIT_GAP_START);
 		PHYSICAL_FREE_LIST.lock().push(entry);
 		if limit > KVM_32BIT_GAP_START + KVM_32BIT_GAP_SIZE {
 			let entry = FreeListEntry::new(KVM_32BIT_GAP_START + KVM_32BIT_GAP_SIZE, limit);
 			PHYSICAL_FREE_LIST.lock().push(entry);
-			TOTAL_MEMORY.store(limit - KVM_32BIT_GAP_SIZE, Ordering::Relaxed);
+			total_memory = limit - KVM_32BIT_GAP_SIZE;
 		} else {
-			TOTAL_MEMORY.store(KVM_32BIT_GAP_START, Ordering::Relaxed);
+			total_memory = KVM_32BIT_GAP_START;
 		}
 	} else {
 		let entry = FreeListEntry::new(mm::kernel_end_address().as_usize(), limit);
 		PHYSICAL_FREE_LIST.lock().push(entry);
-		TOTAL_MEMORY.store(limit, Ordering::Relaxed);
+		total_memory = limit;
 	}
 
+	TOTAL_MEMORY.store(total_memory, Ordering::Relaxed);
+
 	Ok(())
 }