vl.c: extend -m option to support options for memory hotplug

[mirror_qemu.git] / exec.c

diff --git a/exec.c b/exec.c
index 91513c6c43d47a84157a46ad33042e60911bacaf..c3fbbb3fb8b632deba529fc2e63826d17d0e45cd 100644 (file)
--- a/exec.c
+++ b/exec.c
@@ -380,7 +380,7 @@ MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr,
         as = iotlb.target_as;
     }
 
-    if (memory_access_is_direct(mr, is_write)) {
+    if (xen_enabled() && memory_access_is_direct(mr, is_write)) {
         hwaddr page = ((addr & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE) - addr;
         len = MIN(page, len);
     }
@@ -429,9 +429,8 @@ const VMStateDescription vmstate_cpu_common = {
     .name = "cpu_common",
     .version_id = 1,
     .minimum_version_id = 1,
-    .minimum_version_id_old = 1,
     .post_load = cpu_common_post_load,
-    .fields      = (VMStateField []) {
+    .fields = (VMStateField[]) {
         VMSTATE_UINT32(halted, CPUState),
         VMSTATE_UINT32(interrupt_request, CPUState),
         VMSTATE_END_OF_LIST()
@@ -1202,17 +1201,24 @@ static void qemu_ram_setup_dump(void *addr, ram_addr_t size)
     }
 }
 
-void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev)
+static RAMBlock *find_ram_block(ram_addr_t addr)
 {
-    RAMBlock *new_block, *block;
+    RAMBlock *block;
 
-    new_block = NULL;
     QTAILQ_FOREACH(block, &ram_list.blocks, next) {
         if (block->offset == addr) {
-            new_block = block;
-            break;
+            return block;
         }
     }
+
+    return NULL;
+}
+
+void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev)
+{
+    RAMBlock *new_block = find_ram_block(addr);
+    RAMBlock *block;
+
     assert(new_block);
     assert(!new_block->idstr[0]);
 
@@ -1237,6 +1243,15 @@ void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev)
     qemu_mutex_unlock_ramlist();
 }
 
+void qemu_ram_unset_idstr(ram_addr_t addr)
+{
+    RAMBlock *block = find_ram_block(addr);
+
+    if (block) {
+        memset(block->idstr, 0, sizeof(block->idstr));
+    }
+}
+
 static int memory_try_enable_merging(void *addr, size_t len)
 {
     if (!qemu_opt_get_bool(qemu_get_machine_opts(), "mem-merge", true)) {
@@ -1761,10 +1776,12 @@ static subpage_t *subpage_init(AddressSpace *as, hwaddr base)
     return mmio;
 }
 
-static uint16_t dummy_section(PhysPageMap *map, MemoryRegion *mr)
+static uint16_t dummy_section(PhysPageMap *map, AddressSpace *as,
+                              MemoryRegion *mr)
 {
+    assert(as);
     MemoryRegionSection section = {
-        .address_space = &address_space_memory,
+        .address_space = as,
         .mr = mr,
         .offset_within_address_space = 0,
         .offset_within_region = 0,
@@ -1796,13 +1813,13 @@ static void mem_begin(MemoryListener *listener)
     AddressSpaceDispatch *d = g_new0(AddressSpaceDispatch, 1);
     uint16_t n;
 
-    n = dummy_section(&d->map, &io_mem_unassigned);
+    n = dummy_section(&d->map, as, &io_mem_unassigned);
     assert(n == PHYS_SECTION_UNASSIGNED);
-    n = dummy_section(&d->map, &io_mem_notdirty);
+    n = dummy_section(&d->map, as, &io_mem_notdirty);
     assert(n == PHYS_SECTION_NOTDIRTY);
-    n = dummy_section(&d->map, &io_mem_rom);
+    n = dummy_section(&d->map, as, &io_mem_rom);
     assert(n == PHYS_SECTION_ROM);
-    n = dummy_section(&d->map, &io_mem_watch);
+    n = dummy_section(&d->map, as, &io_mem_watch);
     assert(n == PHYS_SECTION_WATCH);
 
     d->phys_map  = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .skip = 1 };