Kernel: Move CPU feature detection to Arch/x86/CPU.{cpp.h}

We now refuse to boot on machines that don't support PAE since all
of our paging code depends on it.

Also let's only enable SSE and PGE support if the CPU advertises it.

1 files changed, 7 insertions, 0 deletions

diff --git a/Kernel/Arch/i386/CPU.h b/Kernel/Arch/i386/CPU.h
index d946a783f0..9c831ad067 100644
--- a/Kernel/Arch/i386/CPU.h
+++ b/Kernel/Arch/i386/CPU.h
@@ -506,3 +506,10 @@ public:
         asm volatile("wrmsr" ::"a"(low), "d"(high), "c"(m_msr));
     }
 };
+
+void detect_cpu_features();
+extern bool g_cpu_supports_nx;
+extern bool g_cpu_supports_pae;
+extern bool g_cpu_supports_pge;
+extern bool g_cpu_supports_smep;
+extern bool g_cpu_supports_sse;