1 files changed, 82 insertions, 0 deletions

diff --git a/arch/x86/include/asm/required-features.h b/arch/x86/include/asm/required-features.h
new file mode 100644
index 000000000000..a01c4e376331
--- /dev/null
+++ b/arch/x86/include/asm/required-features.h
@@ -0,0 +1,82 @@
+#ifndef ASM_X86__REQUIRED_FEATURES_H
+#define ASM_X86__REQUIRED_FEATURES_H
+
+/* Define minimum CPUID feature set for kernel These bits are checked
+   really early to actually display a visible error message before the
+   kernel dies.  Make sure to assign features to the proper mask!
+
+   Some requirements that are not in CPUID yet are also in the
+   CONFIG_X86_MINIMUM_CPU_FAMILY which is checked too.
+
+   The real information is in arch/x86/Kconfig.cpu, this just converts
+   the CONFIGs into a bitmask */
+
+#ifndef CONFIG_MATH_EMULATION
+# define NEED_FPU       (1<<(X86_FEATURE_FPU & 31))
+#else
+# define NEED_FPU       0
+#endif
+
+#if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
+# define NEED_PAE       (1<<(X86_FEATURE_PAE & 31))
+#else
+# define NEED_PAE       0
+#endif
+
+#ifdef CONFIG_X86_CMPXCHG64
+# define NEED_CX8       (1<<(X86_FEATURE_CX8 & 31))
+#else
+# define NEED_CX8       0
+#endif
+
+#if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64)
+# define NEED_CMOV      (1<<(X86_FEATURE_CMOV & 31))
+#else
+# define NEED_CMOV      0
+#endif
+
+#ifdef CONFIG_X86_USE_3DNOW
+# define NEED_3DNOW     (1<<(X86_FEATURE_3DNOW & 31))
+#else
+# define NEED_3DNOW     0
+#endif
+
+#if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64)
+# define NEED_NOPL      (1<<(X86_FEATURE_NOPL & 31))
+#else
+# define NEED_NOPL      0
+#endif
+
+#ifdef CONFIG_X86_64
+#define NEED_PSE        0
+#define NEED_MSR        (1<<(X86_FEATURE_MSR & 31))
+#define NEED_PGE        (1<<(X86_FEATURE_PGE & 31))
+#define NEED_FXSR       (1<<(X86_FEATURE_FXSR & 31))
+#define NEED_XMM        (1<<(X86_FEATURE_XMM & 31))
+#define NEED_XMM2       (1<<(X86_FEATURE_XMM2 & 31))
+#define NEED_LM         (1<<(X86_FEATURE_LM & 31))
+#else
+#define NEED_PSE        0
+#define NEED_MSR        0
+#define NEED_PGE        0
+#define NEED_FXSR       0
+#define NEED_XMM        0
+#define NEED_XMM2       0
+#define NEED_LM         0
+#endif
+
+#define REQUIRED_MASK0  (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
+                         NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
+                         NEED_XMM|NEED_XMM2)
+#define SSE_MASK        (NEED_XMM|NEED_XMM2)
+
+#define REQUIRED_MASK1  (NEED_LM|NEED_3DNOW)
+
+#define REQUIRED_MASK2  0
+#define REQUIRED_MASK3  (NEED_NOPL)
+#define REQUIRED_MASK4  0
+#define REQUIRED_MASK5  0
+#define REQUIRED_MASK6  0
+#define REQUIRED_MASK7  0
+
+#endif /* ASM_X86__REQUIRED_FEATURES_H */