Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\alternative.c Create Date:2022-07-28 07:45:01
Last Modify:2020-03-12 14:18:49 Copyright©Brick
home page Tree
Annotation kernel can get tool activityDownload SCCTChinese

Name:"noinline" to cause control flow change and thus invalidate I$ and* cause refetch after modification.

Proto:static void __init_or_module noinline optimize_nops(struct alt_instr *a, u8 *instr)

Type:void

Parameter:

TypeParameterName
struct alt_instr *a
u8 *instr
347  When i < length of build-time padding cycle
348  If instr[i] != 0x90 Then Return
352  local_irq_save(flags)
353  Use this to add nops to a buffer, then text_poke the whole buffer.
354  local_irq_restore(flags)
356  DUMP_BYTES(instr, length of original instruction , "%px: [%d:%d) optimized NOPs: ", instr, length of original instruction - length of build-time padding , length of build-time padding )
Caller
NameDescribe
apply_alternativesReplace instructions with better alternatives for this CPU type. This runs* before SMP is initialized to avoid SMP problems with self modifying code.* This implies that asymmetric systems where APs have less capabilities than