4 files changed, 38 insertions, 1 deletions

diff --git a/include/asm-sparc64/page.h b/include/asm-sparc64/page.h
index 219ea043a14a..b87dbbd64bc9 100644
--- a/include/asm-sparc64/page.h
+++ b/include/asm-sparc64/page.h
@@ -95,6 +95,8 @@ typedef unsigned long pgprot_t;
 #define HPAGE_SIZE              (_AC(1,UL) << HPAGE_SHIFT)
 #define HPAGE_MASK              (~(HPAGE_SIZE - 1UL))
 #define HUGETLB_PAGE_ORDER      (HPAGE_SHIFT - PAGE_SHIFT)
+#define ARCH_HAS_SETCLEAR_HUGE_PTE
+#define ARCH_HAS_HUGETLB_PREFAULT_HOOK
 #endif
 
 #define TASK_UNMAPPED_BASE      (test_thread_flag(TIF_32BIT) ? \
diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index ae2cd5b09a7c..1ae00c5087f1 100644
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -286,6 +286,7 @@ static inline pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot)
 #define pte_mkyoung(pte)        (__pte(pte_val(pte) | _PAGE_ACCESSED | _PAGE_R))
 #define pte_mkwrite(pte)        (__pte(pte_val(pte) | _PAGE_WRITE))
 #define pte_mkdirty(pte)        (__pte(pte_val(pte) | _PAGE_MODIFIED | _PAGE_W))
+#define pte_mkhuge(pte)         (__pte(pte_val(pte) | _PAGE_SZHUGE))
 
 /* to find an entry in a page-table-directory. */
 #define pgd_index(address)      (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
diff --git a/include/asm-sparc64/processor.h b/include/asm-sparc64/processor.h
index bc1445b904ef..d0bee2413560 100644
--- a/include/asm-sparc64/processor.h
+++ b/include/asm-sparc64/processor.h
@@ -192,6 +192,40 @@ extern unsigned long get_wchan(struct task_struct *task);
 
 #define cpu_relax()     barrier()
 
+/* Prefetch support.  This is tuned for UltraSPARC-III and later.
+ * UltraSPARC-I will treat these as nops, and UltraSPARC-II has
+ * a shallower prefetch queue than later chips.
+ */
+#define ARCH_HAS_PREFETCH
+#define ARCH_HAS_PREFETCHW
+#define ARCH_HAS_SPINLOCK_PREFETCH
+
+static inline void prefetch(const void *x)
+{
+        /* We do not use the read prefetch mnemonic because that
+         * prefetches into the prefetch-cache which only is accessible
+         * by floating point operations in UltraSPARC-III and later.
+         * By contrast, "#one_write" prefetches into the L2 cache
+         * in shared state.
+         */
+        __asm__ __volatile__("prefetch [%0], #one_write"
+                             : /* no outputs */
+                             : "r" (x));
+}
+
+static inline void prefetchw(const void *x)
+{
+        /* The most optimal prefetch to use for writes is
+         * "#n_writes".  This brings the cacheline into the
+         * L2 cache in "owned" state.
+         */
+        __asm__ __volatile__("prefetch [%0], #n_writes"
+                             : /* no outputs */
+                             : "r" (x));
+}
+
+#define spin_lock_prefetch(x)   prefetchw(x)
+
 #endif /* !(__ASSEMBLY__) */
 
 #endif /* !(__ASM_SPARC64_PROCESSOR_H) */
diff --git a/include/asm-sparc64/smp.h b/include/asm-sparc64/smp.h
index 5e3e06d908fe..110a2de89123 100644
--- a/include/asm-sparc64/smp.h
+++ b/include/asm-sparc64/smp.h
@@ -64,7 +64,7 @@ static __inline__ int hard_smp_processor_id(void)
         }
 }
 
-#define smp_processor_id() (current_thread_info()->cpu)
+#define raw_smp_processor_id() (current_thread_info()->cpu)
 
 #endif /* !(__ASSEMBLY__) */