arch/sparc/kernel/hvcalls.S

File Facts

System

Linux kernel

Corpus path

arch/sparc/kernel/hvcalls.S

Extension

.S

Size

16338 bytes

Lines

931

Domain

Architecture Layer

Bucket

arch/sparc

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• export sun4v_mach_set_watchdog
• export sun4v_niagara_getperf
• export sun4v_niagara_setperf
• export sun4v_niagara2_getperf
• export sun4v_niagara2_setperf
• export sun4v_ccb_submit
• export sun4v_ccb_info
• export sun4v_ccb_kill

Annotated Snippet

ENTRY(sun4v_devino_to_sysino)
	mov	HV_FAST_INTR_DEVINO2SYSINO, %o5
	ta	HV_FAST_TRAP
	retl
	 mov	%o1, %o0
ENDPROC(sun4v_devino_to_sysino)

	/* %o0: sysino
	 *
	 * returns %o0: intr_enabled (HV_INTR_{DISABLED,ENABLED})
	 */
ENTRY(sun4v_intr_getenabled)
	mov	HV_FAST_INTR_GETENABLED, %o5
	ta	HV_FAST_TRAP
	retl
	 mov	%o1, %o0
ENDPROC(sun4v_intr_getenabled)

	/* %o0: sysino
	 * %o1: intr_enabled (HV_INTR_{DISABLED,ENABLED})
	 */
ENTRY(sun4v_intr_setenabled)
	mov	HV_FAST_INTR_SETENABLED, %o5
	ta	HV_FAST_TRAP
	retl
	 nop
ENDPROC(sun4v_intr_setenabled)

	/* %o0: sysino
	 *
	 * returns %o0: intr_state (HV_INTR_STATE_*)
	 */
ENTRY(sun4v_intr_getstate)
	mov	HV_FAST_INTR_GETSTATE, %o5
	ta	HV_FAST_TRAP
	retl
	 mov	%o1, %o0
ENDPROC(sun4v_intr_getstate)

	/* %o0: sysino
	 * %o1: intr_state (HV_INTR_STATE_*)
	 */
ENTRY(sun4v_intr_setstate)
	mov	HV_FAST_INTR_SETSTATE, %o5
	ta	HV_FAST_TRAP
	retl
	 nop
ENDPROC(sun4v_intr_setstate)

	/* %o0: sysino
	 *
	 * returns %o0: cpuid
	 */
ENTRY(sun4v_intr_gettarget)
	mov	HV_FAST_INTR_GETTARGET, %o5
	ta	HV_FAST_TRAP
	retl
	 mov	%o1, %o0
ENDPROC(sun4v_intr_gettarget)

	/* %o0: sysino
	 * %o1: cpuid
	 */
ENTRY(sun4v_intr_settarget)
	mov	HV_FAST_INTR_SETTARGET, %o5
	ta	HV_FAST_TRAP
	retl
	 nop
ENDPROC(sun4v_intr_settarget)

Annotation

• Detected declarations: `export sun4v_mach_set_watchdog`, `export sun4v_niagara_getperf`, `export sun4v_niagara_setperf`, `export sun4v_niagara2_getperf`, `export sun4v_niagara2_setperf`, `export sun4v_ccb_submit`, `export sun4v_ccb_info`, `export sun4v_ccb_kill`.
• Atlas domain: Architecture Layer / arch/sparc.
• Implementation status: integration 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.