x86: Clean up cr4 manipulation

[mirror_ubuntu-artful-kernel.git] / arch / x86 / include / asm / processor.h

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index a092a0cce0b759a20ce906efc03e3cb5e8d1d2af..ec1c93588cefd0c4e3a4705c6d966e2555ba95aa 100644 (file)
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -579,39 +579,6 @@ static inline void load_sp0(struct tss_struct *tss,
 #define set_iopl_mask native_set_iopl_mask
 #endif /* CONFIG_PARAVIRT */
 
-/*
- * Save the cr4 feature set we're using (ie
- * Pentium 4MB enable and PPro Global page
- * enable), so that any CPU's that boot up
- * after us can get the correct flags.
- */
-extern unsigned long mmu_cr4_features;
-extern u32 *trampoline_cr4_features;
-
-static inline void set_in_cr4(unsigned long mask)
-{
-       unsigned long cr4;
-
-       mmu_cr4_features |= mask;
-       if (trampoline_cr4_features)
-               *trampoline_cr4_features = mmu_cr4_features;
-       cr4 = read_cr4();
-       cr4 |= mask;
-       write_cr4(cr4);
-}
-
-static inline void clear_in_cr4(unsigned long mask)
-{
-       unsigned long cr4;
-
-       mmu_cr4_features &= ~mask;
-       if (trampoline_cr4_features)
-               *trampoline_cr4_features = mmu_cr4_features;
-       cr4 = read_cr4();
-       cr4 &= ~mask;
-       write_cr4(cr4);
-}
-
 typedef struct {
        unsigned long           seg;
 } mm_segment_t;