[PATCH] ppc64: Remove PTRRELOC() from msChunks code

The msChunks code was written to work on pSeries, but now it's only used on
iSeries. This means there's no need to do PTRRELOC anymore, so remove it all.

A few places were getting "extern reloc_offset()" from abs_addr.h, move it
into system.h instead.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

3 files changed, 13 insertions, 35 deletions

diff --git a/arch/ppc64/kernel/LparData.c b/arch/ppc64/kernel/LparData.c
index 3b9a2600fec2..0ed77b2f7d5f 100644
--- a/arch/ppc64/kernel/LparData.c
+++ b/arch/ppc64/kernel/LparData.c
@@ -229,24 +229,16 @@ struct ItVpdAreas itVpdAreas = {
 struct msChunks msChunks;
 EXPORT_SYMBOL(msChunks);
 
-/* Depending on whether this is called from iSeries or pSeries setup
- * code, the location of the msChunks struct may or may not have
- * to be reloc'd, so we force the caller to do that for us by passing
- * in a pointer to the structure.
- */
 unsigned long
 msChunks_alloc(unsigned long mem, unsigned long num_chunks, unsigned long chunk_size)
 {
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
-
 	_msChunks->num_chunks  = num_chunks;
 	_msChunks->chunk_size  = chunk_size;
 	_msChunks->chunk_shift = __ilog2(chunk_size);
 	_msChunks->chunk_mask  = (1UL<<_msChunks->chunk_shift)-1;
 
 	mem = _ALIGN(mem, sizeof(msChunks_entry));
-	_msChunks->abs = (msChunks_entry *)(mem + offset);
+	_msChunks->abs = (msChunks_entry *)mem;
 	mem += num_chunks * sizeof(msChunks_entry);
 
 	return mem;
diff --git a/include/asm-ppc64/abs_addr.h b/include/asm-ppc64/abs_addr.h
index 6d4e8e787058..93dc63ed4f2f 100644
--- a/include/asm-ppc64/abs_addr.h
+++ b/include/asm-ppc64/abs_addr.h
@@ -29,46 +29,30 @@ struct msChunks {
 extern struct msChunks msChunks;
 
 extern unsigned long msChunks_alloc(unsigned long, unsigned long, unsigned long);
-extern unsigned long reloc_offset(void);
 
 #ifdef CONFIG_MSCHUNKS
 
-static inline unsigned long
-chunk_to_addr(unsigned long chunk)
+static inline unsigned long chunk_to_addr(unsigned long chunk)
 {
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
-
-	return chunk << _msChunks->chunk_shift;
+	return chunk << msChunks.chunk_shift;
 }
 
-static inline unsigned long
-addr_to_chunk(unsigned long addr)
+static inline unsigned long addr_to_chunk(unsigned long addr)
 {
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
-
-	return addr >> _msChunks->chunk_shift;
+	return addr >> msChunks.chunk_shift;
 }
 
-static inline unsigned long
-chunk_offset(unsigned long addr)
+static inline unsigned long chunk_offset(unsigned long addr)
 {
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
-
-	return addr & _msChunks->chunk_mask;
+	return addr & msChunks.chunk_mask;
 }
 
-static inline unsigned long
-abs_chunk(unsigned long pchunk)
+static inline unsigned long abs_chunk(unsigned long pchunk)
 {
-	unsigned long offset = reloc_offset();
-	struct msChunks *_msChunks = PTRRELOC(&msChunks);
-	if ( pchunk >= _msChunks->num_chunks ) {
+	if (pchunk >= msChunks.num_chunks)
 		return pchunk;
-	}
-	return PTRRELOC(_msChunks->abs)[pchunk];
+
+	return msChunks.abs[pchunk];
 }
 
 /* A macro so it can take pointers or unsigned long. */
diff --git a/include/asm-ppc64/system.h b/include/asm-ppc64/system.h
index 98d120ca8a91..4104a5dedbaa 100644
--- a/include/asm-ppc64/system.h
+++ b/include/asm-ppc64/system.h
@@ -302,5 +302,7 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 
 #define arch_align_stack(x) (x)
 
+extern unsigned long reloc_offset(void);
+
 #endif /* __KERNEL__ */
 #endif