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[Qemu-devel] [PATCH] translate-all: use g_malloc0 for all page descripto


From: Emilio G. Cota
Subject: [Qemu-devel] [PATCH] translate-all: use g_malloc0 for all page descriptor allocations
Date: Thu, 9 Apr 2015 13:24:16 -0400

Since commit

  b7b5233a "bsd-user/mmap.c: Don't try to override g_malloc/g_free"

the exception we make here for usermode has been unnecessary.
Get rid of it.

Signed-off-by: Emilio G. Cota <address@hidden>
---
 translate-all.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/translate-all.c b/translate-all.c
index 11763c6..3a6d116 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -389,18 +389,6 @@ static PageDesc *page_find_alloc(tb_page_addr_t index, int 
alloc)
     void **lp;
     int i;
 
-#if defined(CONFIG_USER_ONLY)
-    /* We can't use g_malloc because it may recurse into a locked mutex. */
-# define ALLOC(P, SIZE)                                 \
-    do {                                                \
-        P = mmap(NULL, SIZE, PROT_READ | PROT_WRITE,    \
-                 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);   \
-    } while (0)
-#else
-# define ALLOC(P, SIZE) \
-    do { P = g_malloc0(SIZE); } while (0)
-#endif
-
     /* Level 1.  Always allocated.  */
     lp = l1_map + ((index >> V_L1_SHIFT) & (V_L1_SIZE - 1));
 
@@ -412,7 +400,7 @@ static PageDesc *page_find_alloc(tb_page_addr_t index, int 
alloc)
             if (!alloc) {
                 return NULL;
             }
-            ALLOC(p, sizeof(void *) * V_L2_SIZE);
+            p = g_malloc0(sizeof(void *) * V_L2_SIZE);
             *lp = p;
         }
 
@@ -424,12 +412,10 @@ static PageDesc *page_find_alloc(tb_page_addr_t index, 
int alloc)
         if (!alloc) {
             return NULL;
         }
-        ALLOC(pd, sizeof(PageDesc) * V_L2_SIZE);
+        pd = g_malloc0(sizeof(PageDesc) * V_L2_SIZE);
         *lp = pd;
     }
 
-#undef ALLOC
-
     return pd + (index & (V_L2_SIZE - 1));
 }
 
-- 
1.9.1




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