From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Wang Xuerui <git@xen0n.name>,
Paul Burton <paulburton@kernel.org>,
linux-mips@vger.kernel.org, Huacai Chen <chenhc@lemote.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>
Subject: [PATCH 5.5 081/367] MIPS: asm: local: add barriers for Loongson
Date: Mon, 10 Feb 2020 04:29:54 -0800 [thread overview]
Message-ID: <20200210122431.790813750@linuxfoundation.org> (raw)
In-Reply-To: <20200210122423.695146547@linuxfoundation.org>
From: Wang Xuerui <git@xen0n.name>
commit 3e86460ebe2340df6a33b35a55312cc369bdcbd0 upstream.
Somehow these LL/SC usages are not taken care of, breaking Loongson
builds. Add the SYNCs appropriately.
Signed-off-by: Wang Xuerui <git@xen0n.name>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: <stable@vger.kernel.org> # v5.5+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/include/asm/local.h | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/mips/include/asm/local.h
+++ b/arch/mips/include/asm/local.h
@@ -37,6 +37,7 @@ static __inline__ long local_add_return(
__asm__ __volatile__(
" .set push \n"
" .set arch=r4000 \n"
+ __SYNC(full, loongson3_war) " \n"
"1:" __LL "%1, %2 # local_add_return \n"
" addu %0, %1, %3 \n"
__SC "%0, %2 \n"
@@ -52,6 +53,7 @@ static __inline__ long local_add_return(
__asm__ __volatile__(
" .set push \n"
" .set "MIPS_ISA_ARCH_LEVEL" \n"
+ __SYNC(full, loongson3_war) " \n"
"1:" __LL "%1, %2 # local_add_return \n"
" addu %0, %1, %3 \n"
__SC "%0, %2 \n"
@@ -84,6 +86,7 @@ static __inline__ long local_sub_return(
__asm__ __volatile__(
" .set push \n"
" .set arch=r4000 \n"
+ __SYNC(full, loongson3_war) " \n"
"1:" __LL "%1, %2 # local_sub_return \n"
" subu %0, %1, %3 \n"
__SC "%0, %2 \n"
@@ -99,6 +102,7 @@ static __inline__ long local_sub_return(
__asm__ __volatile__(
" .set push \n"
" .set "MIPS_ISA_ARCH_LEVEL" \n"
+ __SYNC(full, loongson3_war) " \n"
"1:" __LL "%1, %2 # local_sub_return \n"
" subu %0, %1, %3 \n"
__SC "%0, %2 \n"
prev parent reply other threads:[~2020-02-10 13:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200210122423.695146547@linuxfoundation.org>
2020-02-10 12:29 ` [PATCH 5.5 077/367] MIPS: syscalls: fix indentation of the SYSNR message Greg Kroah-Hartman
2020-02-10 12:29 ` [PATCH 5.5 078/367] MIPS: fix indentation of the RELOCS message Greg Kroah-Hartman
2020-02-10 12:29 ` [PATCH 5.5 079/367] MIPS: boot: fix typo in vmlinux.lzma.its target Greg Kroah-Hartman
2020-02-10 12:29 ` [PATCH 5.5 080/367] MIPS: SGI-IP30: Check for valid pointer before using it Greg Kroah-Hartman
2020-02-10 12:29 ` Greg Kroah-Hartman [this message]
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