Merge foobazco.org:/sources/2.5-bk

into foobazco.org:/sources/2.5-sparc-todave

arch/sparc/mm/srmmu.c

@@ -276,6 +276,23 @@ static inline pte_t *srmmu_pte_offset(pmd_t * dir, unsigned long address)
 	    ((address >> PAGE_SHIFT) & (SRMMU_PTRS_PER_PTE_SOFT - 1));
 }
 
+static unsigned long srmmu_swp_type(swp_entry_t entry)
+{
+	return (entry.val >> SRMMU_SWP_TYPE_SHIFT) & SRMMU_SWP_TYPE_MASK;
+}
+
+static unsigned long srmmu_swp_offset(swp_entry_t entry)
+{
+	return (entry.val >> SRMMU_SWP_OFF_SHIFT) & SRMMU_SWP_OFF_MASK;
+}
+
+static swp_entry_t srmmu_swp_entry(unsigned long type, unsigned long offset)
+{
+	return (swp_entry_t) {
+		  (type & SRMMU_SWP_TYPE_MASK) << SRMMU_SWP_TYPE_SHIFT
+		| (offset & SRMMU_SWP_OFF_MASK) << SRMMU_SWP_OFF_SHIFT };
+}
+
 /*
  * size: bytes to allocate in the nocache area.
  * align: bytes, number to align at.
@@ -2205,6 +2222,10 @@ void __init ld_mmu_srmmu(void)
 	BTFIXUPSET_CALL(sparc_mapiorange, srmmu_mapiorange, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(sparc_unmapiorange, srmmu_unmapiorange, BTFIXUPCALL_NORM);
 
+	BTFIXUPSET_CALL(__swp_type, srmmu_swp_type, BTFIXUPCALL_NORM);
+	BTFIXUPSET_CALL(__swp_offset, srmmu_swp_offset, BTFIXUPCALL_NORM);
+	BTFIXUPSET_CALL(__swp_entry, srmmu_swp_entry, BTFIXUPCALL_NORM);
+
 	BTFIXUPSET_CALL(mmu_info, srmmu_mmu_info, BTFIXUPCALL_NORM);
 
 	BTFIXUPSET_CALL(alloc_thread_info, srmmu_alloc_thread_info, BTFIXUPCALL_NORM);

arch/sparc/mm/sun4c.c

@@ -1863,6 +1863,23 @@ pte_t *sun4c_pte_offset_kernel(pmd_t * dir, unsigned long address)
 			((address >> PAGE_SHIFT) & (SUN4C_PTRS_PER_PTE - 1));
 }
 
+static unsigned long sun4c_swp_type(swp_entry_t entry)
+{
+	return (entry.val & SUN4C_SWP_TYPE_MASK);
+}
+
+static unsigned long sun4c_swp_offset(swp_entry_t entry)
+{
+	return (entry.val >> SUN4C_SWP_OFF_SHIFT) & SUN4C_SWP_OFF_MASK;
+}
+
+static swp_entry_t sun4c_swp_entry(unsigned long type, unsigned long offset)
+{
+	return (swp_entry_t) {
+		  (offset & SUN4C_SWP_OFF_MASK) << SUN4C_SWP_OFF_SHIFT
+		| (type & SUN4C_SWP_TYPE_MASK) };
+}
+
 static void sun4c_free_pte_slow(pte_t *pte)
 {
 	free_page((unsigned long)pte);
@@ -2242,6 +2259,10 @@ void __init ld_mmu_sun4c(void)
 	BTFIXUPSET_CALL(sparc_mapiorange, sun4c_mapiorange, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(sparc_unmapiorange, sun4c_unmapiorange, BTFIXUPCALL_NORM);
 
+	BTFIXUPSET_CALL(__swp_type, sun4c_swp_type, BTFIXUPCALL_NORM);
+	BTFIXUPSET_CALL(__swp_offset, sun4c_swp_offset, BTFIXUPCALL_NORM);
+	BTFIXUPSET_CALL(__swp_entry, sun4c_swp_entry, BTFIXUPCALL_NORM);
+
 	BTFIXUPSET_CALL(alloc_thread_info, sun4c_alloc_thread_info, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(free_thread_info, sun4c_free_thread_info, BTFIXUPCALL_NORM);
 

include/asm-sparc/pgtable.h

@@ -11,6 +11,7 @@
 
 #include <linux/config.h>
 #include <linux/spinlock.h>
+#include <linux/swap.h>
 #include <asm/types.h>
 #ifdef CONFIG_SUN4
 #include <asm/pgtsun4.h>
@@ -401,9 +402,14 @@ BTFIXUPDEF_CALL(void, sparc_unmapiorange, unsigned long, unsigned int)
 extern int invalid_segment;
 
 /* Encode and de-code a swap entry */
-#define __swp_type(x)			(((x).val >> 2) & 0x7f)
-#define __swp_offset(x)			(((x).val >> 9) & 0x3ffff)
-#define __swp_entry(type,offset)	((swp_entry_t) { (((type) & 0x7f) << 2) | (((offset) & 0x3ffff) << 9) })
+BTFIXUPDEF_CALL(unsigned long, __swp_type, swp_entry_t)
+BTFIXUPDEF_CALL(unsigned long, __swp_offset, swp_entry_t)
+BTFIXUPDEF_CALL(swp_entry_t, __swp_entry, unsigned long, unsigned long)
+
+#define __swp_type(__x)			BTFIXUP_CALL(__swp_type)(__x)
+#define __swp_offset(__x)		BTFIXUP_CALL(__swp_offset)(__x)
+#define __swp_entry(__type,__off)	BTFIXUP_CALL(__swp_entry)(__type,__off)
+
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 

include/asm-sparc/pgtsrmmu.h

@@ -90,6 +90,22 @@
 
 #define SRMMU_CHG_MASK    (0xffffff00 | SRMMU_REF | SRMMU_DIRTY)
 
+/* SRMMU swap entry encoding
+ *
+ * We use 5 bits for the type and 19 for the offset.  This gives us
+ * 32 swapfiles of 4GB each.  Encoding looks like:
+ *
+ * oooooooooooooooooootttttRRRRRRRR
+ * fedcba9876543210fedcba9876543210
+ *
+ * The bottom 8 bits are reserved for protection and status bits, especially
+ * FILE and PRESENT.
+ */
+#define SRMMU_SWP_TYPE_MASK	0x1f
+#define SRMMU_SWP_TYPE_SHIFT	SRMMU_PTE_FILE_SHIFT
+#define SRMMU_SWP_OFF_MASK	0x7ffff
+#define SRMMU_SWP_OFF_SHIFT	(SRMMU_PTE_FILE_SHIFT + 5)
+
 /* Some day I will implement true fine grained access bits for
  * user pages because the SRMMU gives us the capabilities to
  * enforce all the protection levels that vma's can have.

include/asm-sparc/pgtsun4c.h

@@ -74,6 +74,21 @@
 #define SUN4C_PAGE_KERNEL	__pgprot(_SUN4C_READABLE|_SUN4C_WRITEABLE|\
 					 _SUN4C_PAGE_DIRTY|_SUN4C_PAGE_PRIV)
 
+/* SUN4C swap entry encoding
+ *
+ * We use 5 bits for the type and 19 for the offset.  This gives us
+ * 32 swapfiles of 4GB each.  Encoding looks like:
+ *
+ * RRRRRRRRooooooooooooooooooottttt
+ * fedcba9876543210fedcba9876543210
+ *
+ * The top 8 bits are reserved for protection and status bits, especially
+ * FILE and PRESENT.
+ */
+#define SUN4C_SWP_TYPE_MASK	0x1f
+#define SUN4C_SWP_OFF_MASK	0x7ffff
+#define SUN4C_SWP_OFF_SHIFT	5
+
 #ifndef __ASSEMBLY__
 
 static inline unsigned long sun4c_get_synchronous_error(void)