From 0ecbc6ad18e324012234183e21805423f5e0cc79 Mon Sep 17 00:00:00 2001
From: Christophe Leroy <christophe.leroy@csgroup.eu>
Date: Tue, 18 Aug 2020 17:19:21 +0000
Subject: powerpc/signal: Remove get_clean_sp()
get_clean_sp() is only used once in kernel/signal.c .
GCC is smart enough to see that x & 0xffffffff is a nop
calculation on PPC32, no need of a special PPC32 trivial version.
Include the logic from the PPC64 version of get_clean_sp() directly
in get_sigframe().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/13ef6510ce30a4867e043157b93af5bb8c67fb3b.1597770847.git.christophe.leroy@csgroup.eu
---
arch/powerpc/kernel/signal.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
(limited to 'arch/powerpc/kernel/signal.c')
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
index 37372fd5b600..1297b440ae78 100644
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -150,7 +150,10 @@ void __user *get_sigframe(struct ksignal *ksig, unsigned long sp,
unsigned long oldsp, newsp;
/* Default to using normal stack */
- oldsp = get_clean_sp(sp, is_32);
+ if (is_32)
+ oldsp = sp & 0x0ffffffffUL;
+ else
+ oldsp = sp;
oldsp = sigsp(oldsp, ksig);
newsp = (oldsp - frame_size) & ~0xFUL;
--
cgit