4 files changed, 29 insertions, 18 deletions

diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 53ec05267a98..2c4f7e11f0d5 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -364,20 +364,23 @@ static inline int has_valid_asid(const struct mm_struct *mm)
 static inline void local_r4k_flush_cache_range(void * args)
 {
         struct vm_area_struct *vma = args;
+        int exec = vma->vm_flags & VM_EXEC;
 
         if (!(has_valid_asid(vma->vm_mm)))
                 return;
 
         r4k_blast_dcache();
+        if (exec)
+                r4k_blast_icache();
 }
 
 static void r4k_flush_cache_range(struct vm_area_struct *vma,
         unsigned long start, unsigned long end)
 {
-        if (!cpu_has_dc_aliases)
-                return;
+        int exec = vma->vm_flags & VM_EXEC;
 
-        r4k_on_each_cpu(local_r4k_flush_cache_range, vma, 1, 1);
+        if (cpu_has_dc_aliases || (exec && !cpu_has_ic_fills_f_dc))
+                r4k_on_each_cpu(local_r4k_flush_cache_range, vma, 1, 1);
 }
 
 static inline void local_r4k_flush_cache_mm(void * args)
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 81f30ac2bff9..6a24651971df 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -92,12 +92,17 @@ EXPORT_SYMBOL(__flush_dcache_page);
 
 void __flush_anon_page(struct page *page, unsigned long vmaddr)
 {
-        if (pages_do_alias((unsigned long)page_address(page), vmaddr)) {
-                void *kaddr;
+        unsigned long addr = (unsigned long) page_address(page);
 
-                kaddr = kmap_coherent(page, vmaddr);
-                flush_data_cache_page((unsigned long)kaddr);
-                kunmap_coherent();
+        if (pages_do_alias(addr, vmaddr)) {
+                if (page_mapped(page) && !Page_dcache_dirty(page)) {
+                        void *kaddr;
+
+                        kaddr = kmap_coherent(page, vmaddr);
+                        flush_data_cache_page((unsigned long)kaddr);
+                        kunmap_coherent();
+                } else
+                        flush_data_cache_page(addr);
         }
 }
 
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 480dec04f552..c7aed133d11d 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -211,7 +211,8 @@ void copy_user_highpage(struct page *to, struct page *from,
         void *vfrom, *vto;
 
         vto = kmap_atomic(to, KM_USER1);
-        if (cpu_has_dc_aliases && page_mapped(from)) {
+        if (cpu_has_dc_aliases &&
+            page_mapped(from) && !Page_dcache_dirty(from)) {
                 vfrom = kmap_coherent(from, vaddr);
                 copy_page(vto, vfrom);
                 kunmap_coherent();
@@ -234,7 +235,8 @@ void copy_to_user_page(struct vm_area_struct *vma,
         struct page *page, unsigned long vaddr, void *dst, const void *src,
         unsigned long len)
 {
-        if (cpu_has_dc_aliases && page_mapped(page)) {
+        if (cpu_has_dc_aliases &&
+            page_mapped(page) && !Page_dcache_dirty(page)) {
                 void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
                 memcpy(vto, src, len);
                 kunmap_coherent();
@@ -253,7 +255,8 @@ void copy_from_user_page(struct vm_area_struct *vma,
         struct page *page, unsigned long vaddr, void *dst, const void *src,
         unsigned long len)
 {
-        if (cpu_has_dc_aliases && page_mapped(page)) {
+        if (cpu_has_dc_aliases &&
+            page_mapped(page) && !Page_dcache_dirty(page)) {
                 void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
                 memcpy(dst, vfrom, len);
                 kunmap_coherent();
diff --git a/arch/mips/mm/pg-sb1.c b/arch/mips/mm/pg-sb1.c
index a3e98c243a89..89925ec57d6a 100644
--- a/arch/mips/mm/pg-sb1.c
+++ b/arch/mips/mm/pg-sb1.c
@@ -216,7 +216,7 @@ void sb1_dma_init(void)
         int i;
 
         for (i = 0; i < DM_NUM_CHANNELS; i++) {
-                const u64 base_val = CPHYSADDR(&page_descr[i]) |
+                const u64 base_val = CPHYSADDR((unsigned long)&page_descr[i]) |
                                      V_DM_DSCR_BASE_RINGSZ(1);
                 void *base_reg = IOADDR(A_DM_REGISTER(i, R_DM_DSCR_BASE));
 
@@ -228,11 +228,11 @@ void sb1_dma_init(void)
 
 void clear_page(void *page)
 {
-        u64 to_phys = CPHYSADDR(page);
+        u64 to_phys = CPHYSADDR((unsigned long)page);
         unsigned int cpu = smp_processor_id();
 
         /* if the page is not in KSEG0, use old way */
-        if ((long)KSEGX(page) != (long)CKSEG0)
+        if ((long)KSEGX((unsigned long)page) != (long)CKSEG0)
                 return clear_page_cpu(page);
 
         page_descr[cpu].dscr_a = to_phys | M_DM_DSCRA_ZERO_MEM |
@@ -252,13 +252,13 @@ void clear_page(void *page)
 
 void copy_page(void *to, void *from)
 {
-        u64 from_phys = CPHYSADDR(from);
-        u64 to_phys = CPHYSADDR(to);
+        u64 from_phys = CPHYSADDR((unsigned long)from);
+        u64 to_phys = CPHYSADDR((unsigned long)to);
         unsigned int cpu = smp_processor_id();
 
         /* if any page is not in KSEG0, use old way */
-        if ((long)KSEGX(to) != (long)CKSEG0
-            || (long)KSEGX(from) != (long)CKSEG0)
+        if ((long)KSEGX((unsigned long)to) != (long)CKSEG0
+            || (long)KSEGX((unsigned long)from) != (long)CKSEG0)
                 return copy_page_cpu(to, from);
 
         page_descr[cpu].dscr_a = to_phys | M_DM_DSCRA_L2C_DEST |