microblaze: Fix GDB issue caused by cache issue

Used the same solution as SH. Changed len to PAGE_SIZE
in copy_to_user_page macro.

Implement flush_cache_page macro.

Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 9 insertions, 3 deletions

diff --git a/arch/microblaze/include/asm/cacheflush.h b/arch/microblaze/include/asm/cacheflush.h
index 7ebd955460d9..5a5d835ae16d 100644
--- a/arch/microblaze/include/asm/cacheflush.h
+++ b/arch/microblaze/include/asm/cacheflush.h
@@ -89,7 +89,9 @@ do { \
 #define flush_cache_vmap(start, end)                    do { } while (0)
 #define flush_cache_vunmap(start, end)                  do { } while (0)
 #define flush_cache_mm(mm)                      do { } while (0)
-#define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
+
+#define flush_cache_page(vma, vmaddr, pfn) \
+        flush_dcache_range(pfn << PAGE_SHIFT, (pfn << PAGE_SHIFT) + PAGE_SIZE);
 
 /* MS: kgdb code use this macro, wrong len with FLASH */
 #if 0
@@ -104,9 +106,13 @@ do { \
 #define copy_to_user_page(vma, page, vaddr, dst, src, len)              \
 do {                                                                    \
         u32 addr = virt_to_phys(dst);                                   \
-        invalidate_icache_range((unsigned) (addr), (unsigned) (addr) + (len));\
         memcpy((dst), (src), (len));                                    \
-        flush_dcache_range((unsigned) (addr), (unsigned) (addr) + (len));\
+        if (vma->vm_flags & VM_EXEC) {                                  \
+                invalidate_icache_range((unsigned) (addr),              \
+                                        (unsigned) (addr) + PAGE_SIZE); \
+                flush_dcache_range((unsigned) (addr),                   \
+                                        (unsigned) (addr) + PAGE_SIZE); \
+        }                                                               \
 } while (0)
 
 #define copy_from_user_page(vma, page, vaddr, dst, src, len)            \