[PATCH] x86-64: Use X86_EFLAGS_IF in x86-64/irqflags.h.

As per i386 patch: move X86_EFLAGS_IF et al out to a new header:
processor-flags.h, so we can include it from irqflags.h and use it in
raw_irqs_disabled_flags().

As a side-effect, we could now use these flags in .S files.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>

include/asm-x86_64/irqflags.h

@@ -9,6 +9,7 @@
  */
 #ifndef _ASM_IRQFLAGS_H
 #define _ASM_IRQFLAGS_H
+#include <asm/processor-flags.h>
 
 #ifndef __ASSEMBLY__
 /*
@@ -53,19 +54,19 @@ static inline void raw_local_irq_disable(void)
 {
 	unsigned long flags = __raw_local_save_flags();
 
-	raw_local_irq_restore((flags & ~(1 << 9)) | (1 << 18));
+	raw_local_irq_restore((flags & ~X86_EFLAGS_IF) | X86_EFLAGS_AC);
 }
 
 static inline void raw_local_irq_enable(void)
 {
 	unsigned long flags = __raw_local_save_flags();
 
-	raw_local_irq_restore((flags | (1 << 9)) & ~(1 << 18));
+	raw_local_irq_restore((flags | X86_EFLAGS_IF) & (~X86_EFLAGS_AC));
 }
 
 static inline int raw_irqs_disabled_flags(unsigned long flags)
 {
-	return !(flags & (1<<9)) || (flags & (1 << 18));
+	return !(flags & X86_EFLAGS_IF) || (flags & X86_EFLAGS_AC);
 }
 
 #else /* CONFIG_X86_VSMP */
@@ -82,7 +83,7 @@ static inline void raw_local_irq_enable(void)
 
 static inline int raw_irqs_disabled_flags(unsigned long flags)
 {
-	return !(flags & (1 << 9));
+	return !(flags & X86_EFLAGS_IF);
 }
 
 #endif

include/asm-x86_64/processor-flags.h

+#ifndef __ASM_X86_64_PROCESSOR_FLAGS_H
+#define __ASM_X86_64_PROCESSOR_FLAGS_H
+/* Various flags defined: can be included from assembler. */
+
+/*
+ * EFLAGS bits
+ */
+#define X86_EFLAGS_CF	0x00000001 /* Carry Flag */
+#define X86_EFLAGS_PF	0x00000004 /* Parity Flag */
+#define X86_EFLAGS_AF	0x00000010 /* Auxillary carry Flag */
+#define X86_EFLAGS_ZF	0x00000040 /* Zero Flag */
+#define X86_EFLAGS_SF	0x00000080 /* Sign Flag */
+#define X86_EFLAGS_TF	0x00000100 /* Trap Flag */
+#define X86_EFLAGS_IF	0x00000200 /* Interrupt Flag */
+#define X86_EFLAGS_DF	0x00000400 /* Direction Flag */
+#define X86_EFLAGS_OF	0x00000800 /* Overflow Flag */
+#define X86_EFLAGS_IOPL	0x00003000 /* IOPL mask */
+#define X86_EFLAGS_NT	0x00004000 /* Nested Task */
+#define X86_EFLAGS_RF	0x00010000 /* Resume Flag */
+#define X86_EFLAGS_VM	0x00020000 /* Virtual Mode */
+#define X86_EFLAGS_AC	0x00040000 /* Alignment Check */
+#define X86_EFLAGS_VIF	0x00080000 /* Virtual Interrupt Flag */
+#define X86_EFLAGS_VIP	0x00100000 /* Virtual Interrupt Pending */
+#define X86_EFLAGS_ID	0x00200000 /* CPUID detection flag */
+
+#endif /* __ASM_X86_64_PROCESSOR_FLAGS_H */

include/asm-x86_64/processor.h

@@ -20,6 +20,7 @@
 #include <asm/percpu.h>
 #include <linux/personality.h>
 #include <linux/cpumask.h>
+#include <asm/processor-flags.h>
 
 #define TF_MASK		0x00000100
 #define IF_MASK		0x00000200
@@ -102,27 +103,6 @@ extern void print_cpu_info(struct cpuinfo_x86 *);
 extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
 extern unsigned short num_cache_leaves;
 
-/*
- * EFLAGS bits
- */
-#define X86_EFLAGS_CF	0x00000001 /* Carry Flag */
-#define X86_EFLAGS_PF	0x00000004 /* Parity Flag */
-#define X86_EFLAGS_AF	0x00000010 /* Auxillary carry Flag */
-#define X86_EFLAGS_ZF	0x00000040 /* Zero Flag */
-#define X86_EFLAGS_SF	0x00000080 /* Sign Flag */
-#define X86_EFLAGS_TF	0x00000100 /* Trap Flag */
-#define X86_EFLAGS_IF	0x00000200 /* Interrupt Flag */
-#define X86_EFLAGS_DF	0x00000400 /* Direction Flag */
-#define X86_EFLAGS_OF	0x00000800 /* Overflow Flag */
-#define X86_EFLAGS_IOPL	0x00003000 /* IOPL mask */
-#define X86_EFLAGS_NT	0x00004000 /* Nested Task */
-#define X86_EFLAGS_RF	0x00010000 /* Resume Flag */
-#define X86_EFLAGS_VM	0x00020000 /* Virtual Mode */
-#define X86_EFLAGS_AC	0x00040000 /* Alignment Check */
-#define X86_EFLAGS_VIF	0x00080000 /* Virtual Interrupt Flag */
-#define X86_EFLAGS_VIP	0x00100000 /* Virtual Interrupt Pending */
-#define X86_EFLAGS_ID	0x00200000 /* CPUID detection flag */
-
 /*
  * Intel CPU features in CR4
  */