2 files changed, 19 insertions, 10 deletions

diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 971f6c047b8a..d7088331fb0f 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -983,11 +983,15 @@ static void __init probe_pcache(void)
 
         printk("Primary instruction cache %ldkB, %s, %s, linesize %d bytes.\n",
                icache_size >> 10,
-               cpu_has_vtag_icache ? "virtually tagged" : "physically tagged",
+               cpu_has_vtag_icache ? "VIVT" : "VIPT",
                way_string[c->icache.ways], c->icache.linesz);
 
-        printk("Primary data cache %ldkB, %s, linesize %d bytes.\n",
-               dcache_size >> 10, way_string[c->dcache.ways], c->dcache.linesz);
+        printk("Primary data cache %ldkB, %s, %s, %s, linesize %d bytes\n",
+               dcache_size >> 10, way_string[c->dcache.ways],
+               (c->dcache.flags & MIPS_CACHE_PINDEX) ? "PIPT" : "VIPT",
+               (c->dcache.flags & MIPS_CACHE_ALIASES) ?
+                        "cache aliases" : "no aliases",
+               c->dcache.linesz);
 }
 
 /*
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 5240432e6d1d..110ee7656b41 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -211,7 +211,7 @@ 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_dcache_dirty(from)) {
+        if (cpu_has_dc_aliases && page_mapped(from)) {
                 vfrom = kmap_coherent(from, vaddr);
                 copy_page(vto, vfrom);
                 kunmap_coherent();
@@ -234,12 +234,15 @@ 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) {
+        if (cpu_has_dc_aliases && page_mapped(page)) {
                 void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
                 memcpy(vto, src, len);
                 kunmap_coherent();
-        } else
+        } else {
                 memcpy(dst, src, len);
+                if (cpu_has_dc_aliases)
+                        SetPageDcacheDirty(page);
+        }
         if ((vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc)
                 flush_cache_page(vma, vaddr, page_to_pfn(page));
 }
@@ -250,13 +253,15 @@ 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) {
-                void *vfrom =
-                        kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+        if (cpu_has_dc_aliases && page_mapped(page)) {
+                void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
                 memcpy(dst, vfrom, len);
                 kunmap_coherent();
-        } else
+        } else {
                 memcpy(dst, src, len);
+                if (cpu_has_dc_aliases)
+                        SetPageDcacheDirty(page);
+        }
 }
 
 EXPORT_SYMBOL(copy_from_user_page);