From a706729c3df22d5cf4a50a02c25f5ebfcb370c82 Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Fri, 28 May 2010 14:45:38 +0200
Subject: [PATCH] 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>
---
arch/microblaze/include/asm/cacheflush.h | 12 +++++++++---
1 file 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) \