um: Add missing apply_returns()

Implement apply_returns() stub for UM, just like all the other patching
routines.

Change-Id: I8aaed955019480f0b5a7a7330a13c7200d48365c
Fixes: 15e67227c4 ("x86: Undo return-thunk damage")
Reported-by: Randy Dunlap <rdunlap@infradead.org)
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/Ys%2Ft45l%2FgarIrD0u@worktop.programming.kicks-ass.net
Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Git-Commit: 564d998106
Signed-off-by: Maria Yu <quic_aiquny@quicinc.com>
This commit is contained in:
Peter Zijlstra 2022-07-14 12:20:19 +02:00 committed by Huang Yiwei
parent e1293cbd23
commit d41dcee41c

View File

@ -432,6 +432,10 @@ void apply_retpolines(s32 *start, s32 *end)
{
}
void apply_returns(s32 *start, s32 *end)
{
}
void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
{
}