From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
"Thomas Bogendoerfer" <tbogendoerfer@suse.de>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
"Paul Burton" <paul.burton@mips.com>,
"Ralf Baechle" <ralf@linux-mips.org>,
"James Hogan" <jhogan@kernel.org>,
linux-mips@vger.kernel.org, "Sasha Levin" <sashal@kernel.org>
Subject: [PATCH 4.14 51/95] MIPS: include: Mark __xchg as __always_inline
Date: Mon, 4 Nov 2019 22:44:49 +0100 [thread overview]
Message-ID: <20191104212104.338498240@linuxfoundation.org> (raw)
In-Reply-To: <20191104212038.056365853@linuxfoundation.org>
From: Thomas Bogendoerfer <tbogendoerfer@suse.de>
[ Upstream commit 46f1619500d022501a4f0389f9f4c349ab46bb86 ]
Commit ac7c3e4ff401 ("compiler: enable CONFIG_OPTIMIZE_INLINING
forcibly") allows compiler to uninline functions marked as 'inline'.
In cace of __xchg this would cause to reference function
__xchg_called_with_bad_pointer, which is an error case
for catching bugs and will not happen for correct code, if
__xchg is inlined.
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/mips/include/asm/cmpxchg.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h
index 895f91b9e89c3..520ca166cbed5 100644
--- a/arch/mips/include/asm/cmpxchg.h
+++ b/arch/mips/include/asm/cmpxchg.h
@@ -73,8 +73,8 @@ extern unsigned long __xchg_called_with_bad_pointer(void)
extern unsigned long __xchg_small(volatile void *ptr, unsigned long val,
unsigned int size);
-static inline unsigned long __xchg(volatile void *ptr, unsigned long x,
- int size)
+static __always_inline
+unsigned long __xchg(volatile void *ptr, unsigned long x, int size)
{
switch (size) {
case 1:
--
2.20.1
next prev parent reply other threads:[~2019-11-04 21:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191104212038.056365853@linuxfoundation.org>
2019-11-04 21:44 ` [PATCH 4.14 43/95] MIPS: include: Mark __cmpxchg as __always_inline Greg Kroah-Hartman
2019-11-04 21:44 ` Greg Kroah-Hartman [this message]
2019-11-04 21:44 ` [PATCH 4.14 52/95] MIPS: fw: sni: Fix out of bounds init of o32 stack Greg Kroah-Hartman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191104212104.338498240@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=f4bug@amsat.org \
--cc=jhogan@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=paul.burton@mips.com \
--cc=ralf@linux-mips.org \
--cc=sashal@kernel.org \
--cc=stable@vger.kernel.org \
--cc=tbogendoerfer@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).