Separate inet_connect into inet_connect (blocking) and inet_nonblocking_connect

[qemu.git] / exec.c

diff --git a/exec.c b/exec.c
index a42a0b5b78410ba5574e44a78b7bdc0d2067183e..3fdbbde0ba63008da2fec37de0933e4b1dcbc3ef 100644 (file)
--- a/exec.c
+++ b/exec.c
@@ -86,7 +86,7 @@ static int nb_tbs;
 /* any access to the tbs or the page table must use this lock */
 spinlock_t tb_lock = SPIN_LOCK_UNLOCKED;
 
-#if defined(__arm__) || defined(__sparc_v9__)
+#if defined(__arm__) || defined(__sparc__)
 /* The prologue must be reachable with a direct jump. ARM and Sparc64
  have limited branch ranges (possibly also PPC) so place it in a
  section close to code segment. */
@@ -541,10 +541,9 @@ static void code_gen_alloc(unsigned long tb_size)
         /* Cannot map more than that */
         if (code_gen_buffer_size > (800 * 1024 * 1024))
             code_gen_buffer_size = (800 * 1024 * 1024);
-#elif defined(__sparc_v9__)
+#elif defined(__sparc__) && HOST_LONG_BITS == 64
         // Map the buffer below 2G, so we can use direct calls and branches
-        flags |= MAP_FIXED;
-        start = (void *) 0x60000000UL;
+        start = (void *) 0x40000000UL;
         if (code_gen_buffer_size > (512 * 1024 * 1024))
             code_gen_buffer_size = (512 * 1024 * 1024);
 #elif defined(__arm__)
@@ -582,10 +581,9 @@ static void code_gen_alloc(unsigned long tb_size)
         /* Cannot map more than that */
         if (code_gen_buffer_size > (800 * 1024 * 1024))
             code_gen_buffer_size = (800 * 1024 * 1024);
-#elif defined(__sparc_v9__)
+#elif defined(__sparc__) && HOST_LONG_BITS == 64
         // Map the buffer below 2G, so we can use direct calls and branches
-        flags |= MAP_FIXED;
-        addr = (void *) 0x60000000UL;
+        addr = (void *) 0x40000000UL;
         if (code_gen_buffer_size > (512 * 1024 * 1024)) {
             code_gen_buffer_size = (512 * 1024 * 1024);
         }
@@ -2475,6 +2473,24 @@ static ram_addr_t last_ram_offset(void)
     return last;
 }
 
+static void qemu_ram_setup_dump(void *addr, ram_addr_t size)
+{
+    int ret;
+    QemuOpts *machine_opts;
+
+    /* Use MADV_DONTDUMP, if user doesn't want the guest memory in the core */
+    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (machine_opts &&
+        !qemu_opt_get_bool(machine_opts, "dump-guest-core", true)) {
+        ret = qemu_madvise(addr, size, QEMU_MADV_DONTDUMP);
+        if (ret) {
+            perror("qemu_madvise");
+            fprintf(stderr, "madvise doesn't support MADV_DONTDUMP, "
+                            "but dump_guest_core=off specified\n");
+        }
+    }
+}
+
 void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev)
 {
     RAMBlock *new_block, *block;
@@ -2550,8 +2566,12 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
 
     ram_list.phys_dirty = g_realloc(ram_list.phys_dirty,
                                        last_ram_offset() >> TARGET_PAGE_BITS);
+    memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS),
+           0, size >> TARGET_PAGE_BITS);
     cpu_physical_memory_set_dirty_range(new_block->offset, size, 0xff);
 
+    qemu_ram_setup_dump(new_block->host, size);
+
     if (kvm_enabled())
         kvm_setup_guest_memory(new_block->host, size);
 
@@ -2668,6 +2688,7 @@ void qemu_ram_remap(ram_addr_t addr, ram_addr_t length)
                     exit(1);
                 }
                 qemu_madvise(vaddr, length, QEMU_MADV_MERGEABLE);
+                qemu_ram_setup_dump(vaddr, length);
             }
             return;
         }
@@ -3500,6 +3521,13 @@ void cpu_physical_memory_write_rom(target_phys_addr_t addr,
             /* ROM/RAM case */
             ptr = qemu_get_ram_ptr(addr1);
             memcpy(ptr, buf, l);
+            if (!cpu_physical_memory_is_dirty(addr1)) {
+                /* invalidate code */
+                tb_invalidate_phys_page_range(addr1, addr1 + l, 0);
+                /* set dirty bit */
+                cpu_physical_memory_set_dirty_flags(
+                    addr1, (0xff & ~CODE_DIRTY_FLAG));
+            }
             qemu_put_ram_ptr(ptr);
         }
         len -= l;