arch/s390/include/uapi/asm/runtime_instr.h

Source file repositories/reference/linux-study-clean/arch/s390/include/uapi/asm/runtime_instr.h

File Facts

System
Linux kernel
Corpus path
arch/s390/include/uapi/asm/runtime_instr.h
Extension
.h
Size
1424 bytes
Lines
75
Domain
Architecture Layer
Bucket
arch/s390
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 runtime_instr_cb {
	__u64 rca;
	__u64 roa;
	__u64 rla;

	__u32 v			: 1;
	__u32 s			: 1;
	__u32 k			: 1;
	__u32 h			: 1;
	__u32 a			: 1;
	__u32 reserved1		: 3;
	__u32 ps		: 1;
	__u32 qs		: 1;
	__u32 pc		: 1;
	__u32 qc		: 1;
	__u32 reserved2		: 1;
	__u32 g			: 1;
	__u32 u			: 1;
	__u32 l			: 1;
	__u32 key		: 4;
	__u32 reserved3		: 8;
	__u32 t			: 1;
	__u32 rgs		: 3;

	__u32 m			: 4;
	__u32 n			: 1;
	__u32 mae		: 1;
	__u32 reserved4		: 2;
	__u32 c			: 1;
	__u32 r			: 1;
	__u32 b			: 1;
	__u32 j			: 1;
	__u32 e			: 1;
	__u32 x			: 1;
	__u32 reserved5		: 2;
	__u32 bpxn		: 1;
	__u32 bpxt		: 1;
	__u32 bpti		: 1;
	__u32 bpni		: 1;
	__u32 reserved6		: 2;

	__u32 d			: 1;
	__u32 f			: 1;
	__u32 ic		: 4;
	__u32 dc		: 4;

	__u64 reserved7;
	__u64 sf;
	__u64 rsic;
	__u64 reserved8;
} __attribute__((__packed__, __aligned__(8)));

static inline void load_runtime_instr_cb(struct runtime_instr_cb *cb)
{
	asm volatile(".insn	rsy,0xeb0000000060,0,0,%0"	/* LRIC */
		: : "Q" (*cb));
}

static inline void store_runtime_instr_cb(struct runtime_instr_cb *cb)
{
	asm volatile(".insn	rsy,0xeb0000000061,0,0,%0"	/* STRIC */
		: "=Q" (*cb) : : "cc");
}

#endif /* _S390_UAPI_RUNTIME_INSTR_H */

Annotation

Implementation Notes