Squash commits for public release

kernel/include/platform/x86/cpuinfo.h

@@ -0,0 +1,31 @@
+#ifndef _KERNEL_PLATFORM_X86_CPUINFO_H
+#define _KERNEL_PLATFORM_X86_CPUINFO_H
+
+#include <libkern/c_attrs.h>
+#include <libkern/types.h>
+#include <platform/generic/cpu.h>
+
+enum CPUFEAT_FLAGS {
+    CPUFEAT_FPU = (1 << 0),
+    CPUFEAT_PSE = (1 << 1),
+    CPUFEAT_PAE = (1 << 2),
+    CPUFEAT_CLFSH = (1 << 3),
+    CPUFEAT_SSE = (1 << 4),
+    CPUFEAT_SSE2 = (1 << 5),
+    CPUFEAT_SSE3 = (1 << 6),
+    CPUFEAT_SSSE3 = (1 << 7),
+    CPUFEAT_SSE4_1 = (1 << 8),
+    CPUFEAT_SSE4_2 = (1 << 9),
+    CPUFEAT_XSAVE = (1 << 10),
+    CPUFEAT_AVX = (1 << 11),
+    CPUFEAT_PDPE1GB = (1 << 12),
+};
+
+void cpuinfo_init();
+
+static inline bool cpuinfo_has_1gb_pages()
+{
+    return TEST_FLAG(THIS_CPU->cpufeat, CPUFEAT_PDPE1GB);
+}
+
+#endif // _KERNEL_PLATFORM_X86_CPUINFO_H