| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <fb1c89257279bfa937dab630c9c3cebb3f909293.1527868006.git.christophe.leroy@c-s.fr>
Date: Fri, 1 Jun 2018 15:49:53 +0000 (UTC)
From: Christophe Leroy <christophe.leroy@....fr>
To: Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>
Cc: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [RFC PATCH v2 14/14] powerpc: Split synch.h in two parts
move feature-fixups related stuff from synch.h to synch-ftr.h
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
arch/powerpc/include/asm/atomic.h | 1 +
arch/powerpc/include/asm/barrier.h | 1 +
arch/powerpc/include/asm/bitops.h | 1 +
arch/powerpc/include/asm/cmpxchg.h | 1 +
arch/powerpc/include/asm/spinlock.h | 1 +
arch/powerpc/include/asm/{synch.h => synch-ftr.h} | 22 +++--------------
arch/powerpc/include/asm/synch.h | 30 -----------------------
arch/powerpc/lib/feature-fixups-test.S | 1 +
8 files changed, 9 insertions(+), 49 deletions(-)
copy arch/powerpc/include/asm/{synch.h => synch-ftr.h} (66%)
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index cbdb0b7e60a3..49a929ec5435 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -11,6 +11,7 @@
#include <asm/cmpxchg.h>
#include <asm/barrier.h>
#include <asm/asm-405.h>
+#include <asm/synch-ftr.h>
#define ATOMIC_INIT(i) { (i) }
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
index 117d09df869f..6a2da24a2219 100644
--- a/arch/powerpc/include/asm/barrier.h
+++ b/arch/powerpc/include/asm/barrier.h
@@ -6,6 +6,7 @@
#define _ASM_POWERPC_BARRIER_H
#include <asm/asm-const.h>
+#include <asm/synch-ftr.h>
/*
* Memory barrier.
diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h
index ff71566dadee..b8bf2f5b75ce 100644
--- a/arch/powerpc/include/asm/bitops.h
+++ b/arch/powerpc/include/asm/bitops.h
@@ -44,6 +44,7 @@
#include <linux/compiler.h>
#include <asm/asm-compat.h>
+#include <asm/synch-ftr.h>
#include <asm/synch.h>
#include <asm/asm-405.h>
diff --git a/arch/powerpc/include/asm/cmpxchg.h b/arch/powerpc/include/asm/cmpxchg.h
index 27183871eb3b..d94a67a1a574 100644
--- a/arch/powerpc/include/asm/cmpxchg.h
+++ b/arch/powerpc/include/asm/cmpxchg.h
@@ -4,6 +4,7 @@
#ifdef __KERNEL__
#include <linux/compiler.h>
+#include <asm/synch-ftr.h>
#include <asm/synch.h>
#include <linux/bug.h>
#include <asm/asm-405.h>
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index 685c72310f5d..182f950a4c5d 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -24,6 +24,7 @@
#include <asm/paca.h>
#include <asm/hvcall.h>
#endif
+#include <asm/synch-ftr.h>
#include <asm/synch.h>
#include <asm/ppc-opcode.h>
#include <asm/asm-405.h>
diff --git a/arch/powerpc/include/asm/synch.h b/arch/powerpc/include/asm/synch-ftr.h
similarity index 66%
copy from arch/powerpc/include/asm/synch.h
copy to arch/powerpc/include/asm/synch-ftr.h
index aca70fb43147..f86c536bd351 100644
--- a/arch/powerpc/include/asm/synch.h
+++ b/arch/powerpc/include/asm/synch-ftr.h
@@ -1,27 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_POWERPC_SYNCH_H
-#define _ASM_POWERPC_SYNCH_H
+#ifndef _ASM_POWERPC_SYNCH_FTR_H
+#define _ASM_POWERPC_SYNCH_FTR_H
#ifdef __KERNEL__
#include <asm/feature-fixups.h>
#include <asm/asm-const.h>
-#ifndef __ASSEMBLY__
-extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup;
-extern void do_lwsync_fixups(unsigned long value, void *fixup_start,
- void *fixup_end);
-
-static inline void eieio(void)
-{
- __asm__ __volatile__ ("eieio" : : : "memory");
-}
-
-static inline void isync(void)
-{
- __asm__ __volatile__ ("isync" : : : "memory");
-}
-#endif /* __ASSEMBLY__ */
-
#if defined(__powerpc64__)
# define LWSYNC lwsync
#elif defined(CONFIG_E500)
@@ -50,4 +34,4 @@ static inline void isync(void)
#endif
#endif /* __KERNEL__ */
-#endif /* _ASM_POWERPC_SYNCH_H */
+#endif /* _ASM_POWERPC_SYNCH_FTR_H */
diff --git a/arch/powerpc/include/asm/synch.h b/arch/powerpc/include/asm/synch.h
index aca70fb43147..48b23168ea9e 100644
--- a/arch/powerpc/include/asm/synch.h
+++ b/arch/powerpc/include/asm/synch.h
@@ -3,9 +3,6 @@
#define _ASM_POWERPC_SYNCH_H
#ifdef __KERNEL__
-#include <asm/feature-fixups.h>
-#include <asm/asm-const.h>
-
#ifndef __ASSEMBLY__
extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup;
extern void do_lwsync_fixups(unsigned long value, void *fixup_start,
@@ -22,32 +19,5 @@ static inline void isync(void)
}
#endif /* __ASSEMBLY__ */
-#if defined(__powerpc64__)
-# define LWSYNC lwsync
-#elif defined(CONFIG_E500)
-# define LWSYNC \
- START_LWSYNC_SECTION(96); \
- sync; \
- MAKE_LWSYNC_SECTION_ENTRY(96, __lwsync_fixup);
-#else
-# define LWSYNC sync
-#endif
-
-#ifdef CONFIG_SMP
-#define __PPC_ACQUIRE_BARRIER \
- START_LWSYNC_SECTION(97); \
- isync; \
- MAKE_LWSYNC_SECTION_ENTRY(97, __lwsync_fixup);
-#define PPC_ACQUIRE_BARRIER "\n" stringify_in_c(__PPC_ACQUIRE_BARRIER)
-#define PPC_RELEASE_BARRIER stringify_in_c(LWSYNC) "\n"
-#define PPC_ATOMIC_ENTRY_BARRIER "\n" stringify_in_c(sync) "\n"
-#define PPC_ATOMIC_EXIT_BARRIER "\n" stringify_in_c(sync) "\n"
-#else
-#define PPC_ACQUIRE_BARRIER
-#define PPC_RELEASE_BARRIER
-#define PPC_ATOMIC_ENTRY_BARRIER
-#define PPC_ATOMIC_EXIT_BARRIER
-#endif
-
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SYNCH_H */
diff --git a/arch/powerpc/lib/feature-fixups-test.S b/arch/powerpc/lib/feature-fixups-test.S
index ee7c5fd5fc64..8c781b2e467b 100644
--- a/arch/powerpc/lib/feature-fixups-test.S
+++ b/arch/powerpc/lib/feature-fixups-test.S
@@ -10,6 +10,7 @@
#include <asm/feature-fixups.h>
#include <asm/ppc_asm.h>
+#include <asm/synch-ftr.h>
#include <asm/synch.h>
#include <asm/asm-compat.h>
--
2.13.3
Powered by blists - more mailing lists