Gh0st
/
linux
mirror of https://github.com/torvalds/linux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

objtool: Preserve alternatives order 

Preserve the order in which alternatives are defined. Currently
objtool stores alternatives in a list in reverse order.

Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://patch.msgid.link/20251121095340.464045-19-alexandre.chartre@oracle.com
This commit is contained in:
Alexandre Chartre 2025-11-21 10:53:28 +01:00 committed by Peter Zijlstra
parent 5f326c8897
commit 7ad7a4a720
1 changed files with 14 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
tools/objtool/check.c
View File

@ -1921,6 +1921,7 @@ static int add_special_section_alts(struct objtool_file *file)
struct special_alt *special_alt, *tmp;
enum alternative_type alt_type;
struct alternative *alt;
struct alternative *a;
if (special_get_alts(file->elf, &special_alts))
return -1;
@ -1973,9 +1974,20 @@ static int add_special_section_alts(struct objtool_file *file)
}
alt->insn = new_insn;
alt->next = orig_insn->alts;
alt->type = alt_type;
orig_insn->alts = alt;
alt->next = NULL;
/*
* Store alternatives in the same order they have been
* defined.
*/
if (!orig_insn->alts) {
orig_insn->alts = alt;
} else {
for (a = orig_insn->alts; a->next; a = a->next)
;
a->next = alt;
}
list_del(&special_alt->list);
free(special_alt);