[Qemu-devel] [PATCH 1/3] tcg: Introduce mmap_lock_reset()

[Sergey Fedorov]

From: Sergey Fedorov <address@hidden>

Signed-off-by: Sergey Fedorov <address@hidden>
Signed-off-by: Sergey Fedorov <address@hidden>
---
 bsd-user/mmap.c         | 7 +++++++
 include/exec/exec-all.h | 2 ++
 linux-user/mmap.c       | 7 +++++++
 3 files changed, 16 insertions(+)

diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index 610f91b28584..b2e5909b03c4 100644
--- a/bsd-user/mmap.c
+++ b/bsd-user/mmap.c
@@ -42,6 +42,13 @@ void mmap_unlock(void)
     }
 }
 
+void mmap_lock_reset(void)
+{
+    if (mmap_lock_count) {
+        pthread_mutex_unlock(&mmap_mutex);
+    }
+}
+
 /* Grab lock to make sure things are in a consistent state after fork().  */
 void mmap_fork_start(void)
 {
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index c1f59fa59d2c..0375acb5ab40 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -369,6 +369,7 @@ void tlb_fill(CPUState *cpu, target_ulong addr, int 
is_write, int mmu_idx,
 #if defined(CONFIG_USER_ONLY)
 void mmap_lock(void);
 void mmap_unlock(void);
+void mmap_lock_reset(void);
 
 static inline tb_page_addr_t get_page_addr_code(CPUArchState *env1, 
target_ulong addr)
 {
@@ -377,6 +378,7 @@ static inline tb_page_addr_t 
get_page_addr_code(CPUArchState *env1, target_ulong
 #else
 static inline void mmap_lock(void) {}
 static inline void mmap_unlock(void) {}
+static inline void mmap_lock_reset(void) {}
 
 /* cputlb.c */
 tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr);
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index c4371d943a85..4cd998f96766 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -43,6 +43,13 @@ void mmap_unlock(void)
     }
 }
 
+void mmap_lock_reset(void)
+{
+    if (mmap_lock_count) {
+        pthread_mutex_unlock(&mmap_mutex);
+    }
+}
+
 /* Grab lock to make sure things are in a consistent state after fork().  */
 void mmap_fork_start(void)
 {
-- 
1.9.1