arch/s390/include/asm/nospec-branch.h
Source file repositories/reference/linux-study-clean/arch/s390/include/asm/nospec-branch.h
File Facts
- System
- Linux kernel
- Corpus path
arch/s390/include/asm/nospec-branch.h- Extension
.h- Size
- 1176 bytes
- Lines
- 48
- 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.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Dependency Surface
linux/types.hasm/facility.h
Detected Declarations
function nobp_enabledfunction nospec_uses_trampoline
Annotated Snippet
#ifndef _ASM_S390_EXPOLINE_H
#define _ASM_S390_EXPOLINE_H
#ifndef __ASSEMBLER__
#include <linux/types.h>
#include <asm/facility.h>
extern int nospec_disable;
extern int nobp;
static inline bool nobp_enabled(void)
{
if (__is_defined(__DECOMPRESSOR))
return false;
return nobp && test_facility(82);
}
void nospec_init_branches(void);
void nospec_auto_detect(void);
void nospec_revert(s32 *start, s32 *end);
static inline bool nospec_uses_trampoline(void)
{
return __is_defined(CC_USING_EXPOLINE) && !nospec_disable;
}
void __s390_indirect_jump_r1(void);
void __s390_indirect_jump_r2(void);
void __s390_indirect_jump_r3(void);
void __s390_indirect_jump_r4(void);
void __s390_indirect_jump_r5(void);
void __s390_indirect_jump_r6(void);
void __s390_indirect_jump_r7(void);
void __s390_indirect_jump_r8(void);
void __s390_indirect_jump_r9(void);
void __s390_indirect_jump_r10(void);
void __s390_indirect_jump_r11(void);
void __s390_indirect_jump_r12(void);
void __s390_indirect_jump_r13(void);
void __s390_indirect_jump_r14(void);
void __s390_indirect_jump_r15(void);
#endif /* __ASSEMBLER__ */
#endif /* _ASM_S390_EXPOLINE_H */
Annotation
- Immediate include surface: `linux/types.h`, `asm/facility.h`.
- Detected declarations: `function nobp_enabled`, `function nospec_uses_trampoline`.
- Atlas domain: Architecture Layer / arch/s390.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.