From: Juan Quintela <quintela@redhat.com>
Date: Mon, 21 May 2012 22:42:40 +0000 (+0200)
Subject: Only TCG needs TLB handling
X-Git-Tag: TizenStudio_2.0_p2.3.2~208^2~3911^2~4
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d24981d37e793b0a8fcde1879db19eb11fe0f975;p=sdk%2Femulator%2Fqemu.git

Only TCG needs TLB handling

Refactor the code that is only needed for tcg to an static function.
Call that only when tcg is enabled.  We can't refactor to a dummy
function in the kvm case, as qemu can be compiled at the same time
with tcg and kvm.

Signed-off-by: Juan Quintela <quintela@redhat.com>
---

diff --git a/exec.c b/exec.c
index 8244d54..a68b65c 100644
--- a/exec.c
+++ b/exec.c
@@ -1824,11 +1824,29 @@ void tb_flush_jmp_cache(CPUArchState *env, target_ulong addr)
             TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *));
 }
 
+static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t end,
+                                      uintptr_t length)
+{
+    uintptr_t start1;
+
+    /* we modify the TLB cache so that the dirty bit will be set again
+       when accessing the range */
+    start1 = (uintptr_t)qemu_safe_ram_ptr(start);
+    /* Check that we don't span multiple blocks - this breaks the
+       address comparisons below.  */
+    if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1
+            != (end - 1) - start) {
+        abort();
+    }
+    cpu_tlb_reset_dirty_all(start1, length);
+
+}
+
 /* Note: start and end must be within the same ram block.  */
 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
                                      int dirty_flags)
 {
-    uintptr_t length, start1;
+    uintptr_t length;
 
     start &= TARGET_PAGE_MASK;
     end = TARGET_PAGE_ALIGN(end);
@@ -1838,16 +1856,9 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
         return;
     cpu_physical_memory_mask_dirty_range(start, length, dirty_flags);
 
-    /* we modify the TLB cache so that the dirty bit will be set again
-       when accessing the range */
-    start1 = (uintptr_t)qemu_safe_ram_ptr(start);
-    /* Check that we don't span multiple blocks - this breaks the
-       address comparisons below.  */
-    if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1
-            != (end - 1) - start) {
-        abort();
+    if (tcg_enabled()) {
+        tlb_reset_dirty_range_all(start, end, length);
     }
-    cpu_tlb_reset_dirty_all(start1, length);
 }
 
 int cpu_physical_memory_set_dirty_tracking(int enable)