Kernel: Make PhysicalRegion.cpp compile on aarch64

3 files changed, 9 insertions, 1 deletions

diff --git a/Kernel/Arch/aarch64/Processor.h b/Kernel/Arch/aarch64/Processor.h
index 4ea7d65862..512c13da45 100644
--- a/Kernel/Arch/aarch64/Processor.h
+++ b/Kernel/Arch/aarch64/Processor.h
@@ -63,6 +63,8 @@ public:
         return 0;
     }
 
+    ALWAYS_INLINE static u64 read_cpu_counter() { return 0; }
+
     ALWAYS_INLINE static void enter_critical() { }
     ALWAYS_INLINE static void leave_critical() { }
     ALWAYS_INLINE static u32 in_critical()
diff --git a/Kernel/Arch/x86/Processor.h b/Kernel/Arch/x86/Processor.h
index d7df2b257b..cd93b2bf37 100644
--- a/Kernel/Arch/x86/Processor.h
+++ b/Kernel/Arch/x86/Processor.h
@@ -158,6 +158,11 @@ public:
         return *g_total_processors.ptr();
     }
 
+    ALWAYS_INLINE static u64 read_cpu_counter()
+    {
+        return read_tsc();
+    }
+
     ALWAYS_INLINE static void pause()
     {
         asm volatile("pause");
diff --git a/Kernel/Random.h b/Kernel/Random.h
index 8aaf0eaaf7..0213b83c9d 100644
--- a/Kernel/Random.h
+++ b/Kernel/Random.h
@@ -10,6 +10,7 @@
 #include <AK/Assertions.h>
 #include <AK/ByteBuffer.h>
 #include <AK/Types.h>
+#include <Kernel/Arch/Processor.h>
 #include <Kernel/Locking/Mutex.h>
 #include <Kernel/StdLib.h>
 #include <LibCrypto/Cipher/AES.h>
@@ -163,7 +164,7 @@ public:
         auto& kernel_rng = KernelRng::the();
         SpinlockLocker lock(kernel_rng.get_lock());
         // We don't lock this because on the off chance a pool is corrupted, entropy isn't lost.
-        Event<T> event = { read_tsc(), m_source, event_data };
+        Event<T> event = { Processor::read_cpu_counter(), m_source, event_data };
         kernel_rng.add_random_event(event, m_pool);
         m_pool++;
         kernel_rng.wake_if_ready();