[PATCH RFC 8/8] powerpc/64: barrier_nospec: Add commandline trigger

[Michal Suchanek <msuchanek@suse.de>]

Copypasta from rfi implementation

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
 arch/powerpc/kernel/setup_64.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 4b67b7b877d9..257f0e6be107 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -840,6 +840,14 @@ static int __init handle_no_pti(char *p)
 }
 early_param("nopti", handle_no_pti);
 
+static int __init handle_no_nospec(char *p)
+{
+	pr_info("barrier_nospec: disabled on command line.");
+	no_nospec = true;
+	return 0;
+}
+early_param("no_nospec", handle_no_nospec);
+
 static void do_nothing(void *unused)
 {
 	/*
-- 
2.13.6