X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/22d48de65c88c42e3cb2b000491dc6089a240e2a..4cbea5986981998cda07b13794c7e3ff7bc42e80:/linux-user/mmap.c

diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index b412e3fe0a..88276e77f8 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -30,10 +30,10 @@
 
 #include "qemu.h"
 #include "qemu-common.h"
+#include "translate-all.h"
 
 //#define DEBUG_MMAP
 
-#if defined(CONFIG_USE_NPTL)
 static pthread_mutex_t mmap_mutex = PTHREAD_MUTEX_INITIALIZER;
 static __thread int mmap_lock_count;
 
@@ -66,16 +66,6 @@ void mmap_fork_end(int child)
     else
         pthread_mutex_unlock(&mmap_mutex);
 }
-#else
-/* We aren't threadsafe to start with, so no need to worry about locking.  */
-void mmap_lock(void)
-{
-}
-
-void mmap_unlock(void)
-{
-}
-#endif
 
 /* NOTE: all the constants are the HOST ones, but addresses are target. */
 int target_mprotect(abi_ulong start, abi_ulong len, int prot)
@@ -216,7 +206,6 @@ abi_ulong mmap_next_start = TASK_UNMAPPED_BASE;
 
 unsigned long last_brk;
 
-#ifdef CONFIG_USE_GUEST_BASE
 /* Subroutine of mmap_find_vma, used when we have pre-allocated a chunk
    of guest address space.  */
 static abi_ulong mmap_find_vma_reserved(abi_ulong start, abi_ulong size)
@@ -263,7 +252,6 @@ static abi_ulong mmap_find_vma_reserved(abi_ulong start, abi_ulong size)
 
     return addr;
 }
-#endif
 
 /*
  * Find and reserve a free memory area of size 'size'. The search
@@ -286,11 +274,9 @@ abi_ulong mmap_find_vma(abi_ulong start, abi_ulong size)
 
     size = HOST_PAGE_ALIGN(size);
 
-#ifdef CONFIG_USE_GUEST_BASE
     if (RESERVED_VA) {
         return mmap_find_vma_reserved(start, size);
     }
-#endif
 
     addr = start;
     wrapped = repeat = 0;
@@ -483,6 +469,10 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
         if (!(flags & MAP_ANONYMOUS)) {
             p = mmap(g2h(start), len, prot,
                      flags | MAP_FIXED, fd, host_offset);
+            if (p == MAP_FAILED) {
+                munmap(g2h(start), host_len);
+                goto fail;
+            }
             host_start += offset - host_offset;
         }
         start = h2g(host_start);
@@ -581,7 +571,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
     page_dump(stdout);
     printf("\n");
 #endif
-    tb_invalidate_phys_range(start, start + len, 0);
+    tb_invalidate_phys_range(start, start + len);
     mmap_unlock();
     return start;
 fail:
@@ -686,7 +676,7 @@ int target_munmap(abi_ulong start, abi_ulong len)
 
     if (ret == 0) {
         page_set_flags(start, start + len, 0);
-        tb_invalidate_phys_range(start, start + len, 0);
+        tb_invalidate_phys_range(start, start + len);
     }
     mmap_unlock();
     return ret;
@@ -765,7 +755,7 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
         page_set_flags(old_addr, old_addr + old_size, 0);
         page_set_flags(new_addr, new_addr + new_size, prot | PAGE_VALID);
     }
-    tb_invalidate_phys_range(new_addr, new_addr + new_size, 0);
+    tb_invalidate_phys_range(new_addr, new_addr + new_size);
     mmap_unlock();
     return new_addr;
 }