X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc%2Fmm%2Fsrmmu.c;h=c89a803cbc20d18e812189fdff5fdd1c067f41d3;hb=f7f1b0f1e2fbadeab12d24236000e778aa9b1ead;hp=c18475eaaee18c5ae6bc67333a0d8e65e825fcc8;hpb=9bf4aaab3e101692164d49b7ca357651eb691cb6;p=linux-2.6.git

diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index c18475eaa..c89a803cb 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -88,7 +88,7 @@ ctxd_t *srmmu_ctx_table_phys;
 ctxd_t *srmmu_context_table;
 
 int viking_mxcc_present;
-static spinlock_t srmmu_context_spinlock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(srmmu_context_spinlock);
 
 int is_hypersparc;
 
@@ -133,11 +133,12 @@ static struct bit_map srmmu_nocache_map;
 static unsigned long srmmu_pte_pfn(pte_t pte)
 {
 	if (srmmu_device_memory(pte_val(pte))) {
-		/* XXX Anton obviously had something in mind when he did this.
-		 * But what?
+		/* Just return something that will cause
+		 * pfn_valid() to return false.  This makes
+		 * copy_one_pte() to just directly copy to
+		 * PTE over.
 		 */
-		/* return (struct page *)~0; */
-		BUG();
+		return ~0UL;
 	}
 	return (pte_val(pte) & SRMMU_PTE_PMASK) >> (PAGE_SHIFT-4);
 }
@@ -160,6 +161,9 @@ static inline int srmmu_pte_none(pte_t pte)
 static inline int srmmu_pte_present(pte_t pte)
 { return ((pte_val(pte) & SRMMU_ET_MASK) == SRMMU_ET_PTE); }
 
+static inline int srmmu_pte_read(pte_t pte)
+{ return !(pte_val(pte) & SRMMU_NOREAD); }
+
 static inline void srmmu_pte_clear(pte_t *ptep)
 { srmmu_set_pte(ptep, __pte(0)); }
 
@@ -1002,8 +1006,7 @@ extern void viking_flush_cache_all(void);
 extern void viking_flush_cache_mm(struct mm_struct *mm);
 extern void viking_flush_cache_range(struct vm_area_struct *vma, unsigned long start,
 				     unsigned long end);
-extern void viking_flush_cache_page(struct vm_area_struct *vma,
-				    unsigned long page);
+extern void viking_flush_cache_page(struct vm_area_struct *vma, unsigned long page);
 extern void viking_flush_page_to_ram(unsigned long page);
 extern void viking_flush_page_for_dma(unsigned long page);
 extern void viking_flush_sig_insns(struct mm_struct *mm, unsigned long addr);
@@ -1341,9 +1344,8 @@ void __init srmmu_paging_init(void)
 		zones_size[ZONE_HIGHMEM] = npages;
 		zholes_size[ZONE_HIGHMEM] = npages - calc_highpages();
 
-		free_area_init_node(0, &contig_page_data, NULL, zones_size,
+		free_area_init_node(0, &contig_page_data, zones_size,
 				    pfn_base, zholes_size);
-		mem_map = contig_page_data.node_mem_map;
 	}
 }
 
@@ -1463,6 +1465,7 @@ static void __init poke_hypersparc(void)
 static void __init init_hypersparc(void)
 {
 	srmmu_name = "ROSS HyperSparc";
+	srmmu_modtype = HyperSparc;
 
 	init_vac_layout();
 
@@ -2166,6 +2169,7 @@ void __init ld_mmu_srmmu(void)
 
 	BTFIXUPSET_CALL(pte_present, srmmu_pte_present, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(pte_clear, srmmu_pte_clear, BTFIXUPCALL_SWAPO0G0);
+	BTFIXUPSET_CALL(pte_read, srmmu_pte_read, BTFIXUPCALL_NORM);
 
 	BTFIXUPSET_CALL(pmd_bad, srmmu_pmd_bad, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(pmd_present, srmmu_pmd_present, BTFIXUPCALL_NORM);