linux-kernel - [PATCH] powerpc/step: Mark __copy_mem_out() and __emulate_dcbz() __always

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Message-Id: <f1d4a15da70190f8c2fcddb377bbc1e09827242c.1687343857.git.christophe.leroy@csgroup.eu>
Date:   Wed, 21 Jun 2023 12:38:10 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH] powerpc/step: Mark __copy_mem_out() and __emulate_dcbz() __always_inline

objtool reports two folliwng warnings:
  arch/powerpc/lib/sstep.o: warning: objtool: copy_mem_out+0x3c
    (.text+0x30c): call to __copy_mem_out() with UACCESS enabled
  arch/powerpc/lib/sstep.o: warning: objtool: emulate_dcbz+0x70
    (.text+0x4dc): call to __emulate_dcbz() with UACCESS enabled

Mark __copy_mem_out() and __emulate_dcbz() __always_inline

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/lib/sstep.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 38158b77a801..a4ab8625061a 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -485,7 +485,7 @@ write_mem_aligned(unsigned long val, unsigned long ea, int nb, struct pt_regs *r
  * Copy from a buffer to userspace, using the largest possible
  * aligned accesses, up to sizeof(long).
  */
-static nokprobe_inline int __copy_mem_out(u8 *dest, unsigned long ea, int nb, struct pt_regs *regs)
+static __always_inline int __copy_mem_out(u8 *dest, unsigned long ea, int nb, struct pt_regs *regs)
 {
 	int c;
 
@@ -1043,7 +1043,7 @@ static nokprobe_inline int do_vsx_store(struct instruction_op *op,
 }
 #endif /* CONFIG_VSX */
 
-static int __emulate_dcbz(unsigned long ea)
+static __always_inline int __emulate_dcbz(unsigned long ea)
 {
 	unsigned long i;
 	unsigned long size = l1_dcache_bytes();
-- 
2.40.1