arch/x86/boot/cpuflags.h

Source file repositories/reference/linux-study-clean/arch/x86/boot/cpuflags.h

File Facts

System
Linux kernel
Corpus path
arch/x86/boot/cpuflags.h
Extension
.h
Size
615 bytes
Lines
28
Domain
Architecture Layer
Bucket
arch/x86
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct cpu_features {
	int level;		/* Family, or 64 for x86-64 */
	int family;		/* Family, always */
	int model;
	u32 flags[NCAPINTS];
};

extern struct cpu_features cpu;
extern u32 cpu_vendor[3];

#ifdef CONFIG_X86_32
bool has_eflag(unsigned long mask);
#else
static inline bool has_eflag(unsigned long mask) { return true; }
#endif
void get_cpuflags(void);
void cpuid_count(u32 id, u32 count, u32 *a, u32 *b, u32 *c, u32 *d);
bool has_cpuflag(int flag);

#endif

Annotation

Implementation Notes