From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
To: vitb@kernel.crashing.org, benh@kernel.crashing.org
Cc: linuxppc-dev@ozlabs.org
Subject: [POWERPC] [RFC] Fix 8xx tlbie definition
Date: Fri, 16 Nov 2007 11:28:22 -0600 [thread overview]
Message-ID: <20071116112822.37a238c0@weaponx> (raw)
Git commit e701d269aa28996f3502780951fe1b12d5d66b49 introduced an incorrect
definition for _tlbie on PowerPC 8xx platforms. Only the address should be
passed to the function. This patch corrects the definition of _tlbie and the
related tlb flushing functions for 8xx.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Index: linux-2.6/include/asm-powerpc/tlbflush.h
===================================================================
--- linux-2.6.orig/include/asm-powerpc/tlbflush.h
+++ linux-2.6/include/asm-powerpc/tlbflush.h
@@ -28,19 +28,33 @@
#include <linux/mm.h>
+#if defined(CONFIG_8xx)
+/* 8xx doesn't use PID for TLB invalidates */
+extern void _tlbie(unsigned address);
+#define _tlbia() asm volatile ("tlbia; sync" : : : "memory")
+
+static inline void flush_tlb_page(struct vm_area_struct *vma,
+ unsigned long vmaddr)
+{
+ _tlbie(vmaddr);
+}
+
+static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
+ unsigned long vmaddr)
+{
+ _tlbie(vmaddr);
+}
+
+#else /* 4xx or FSL_BOOKE */
+
extern void _tlbie(unsigned long address, unsigned int pid);
-#if defined(CONFIG_40x) || defined(CONFIG_8xx)
+#if defined(CONFIG_40x)
#define _tlbia() asm volatile ("tlbia; sync" : : : "memory")
#else /* CONFIG_44x || CONFIG_FSL_BOOKE */
extern void _tlbia(void);
#endif
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- _tlbia();
-}
-
static inline void flush_tlb_page(struct vm_area_struct *vma,
unsigned long vmaddr)
{
@@ -53,6 +67,13 @@ static inline void flush_tlb_page_nohash
_tlbie(vmaddr, vma->vm_mm->context.id);
}
+#endif /* CONFIG_8xx */
+
+static inline void flush_tlb_mm(struct mm_struct *mm)
+{
+ _tlbia();
+}
+
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
next reply other threads:[~2007-11-16 17:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-16 17:28 Josh Boyer [this message]
2007-11-16 21:06 ` [POWERPC] [RFC] Fix 8xx tlbie definition Benjamin Herrenschmidt
2007-11-16 21:29 ` Kumar Gala
2007-11-16 22:28 ` Vitaly Bordug
2007-11-17 1:05 ` Benjamin Herrenschmidt
2007-11-17 17:06 ` Josh Boyer
2007-11-18 16:51 ` Kumar Gala
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