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Subject[RFC PATCH 08/17] powerpc/e500: Remove conditional "lwsync" substitution
Date
As FreeScale e500 systems have different cacheline sizes from e500mc, it
is basically impossible for the kernel to support both in a single
system image at present.

Given that one is SPE-float and the other is classic-float, they are not
generally userspace-compatible either.

This patch updates the conditional to depend on whether the system is
actually targetting an "e500" or "e500mc" core and entirely removes the
unused sync-to-lwsync-replacement on e500v1/e500v2 systems.

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
---
arch/powerpc/include/asm/synch.h | 16 ++++------------
1 files changed, 4 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/include/asm/synch.h b/arch/powerpc/include/asm/synch.h
index d7cab44..3d518b6 100644
--- a/arch/powerpc/include/asm/synch.h
+++ b/arch/powerpc/include/asm/synch.h
@@ -5,8 +5,11 @@
#include <linux/stringify.h>
#include <asm/feature-fixups.h>

-#if defined(__powerpc64__) || defined(CONFIG_PPC_E500MC)
+#if defined(__powerpc64__) || defined(CONFIG_FSL_E500MC)
#define __SUBARCH_HAS_LWSYNC
+#define LWSYNC lwsync
+#else
+#define LWSYNC sync
#endif

#ifndef __ASSEMBLY__
@@ -25,17 +28,6 @@ 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); \
--
1.7.2.5


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