/* 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. */
/* 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__)
/* 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);
}
phys_sections_nb = 0;
}
-/* register physical memory.
- For RAM, 'size' must be a multiple of the target page size.
- If (phys_offset & ~TARGET_PAGE_MASK) != 0, then it is an
- io memory page. The address used when calling the IO function is
- the offset from the start of the region, plus region_offset. Both
- start_addr and region_offset are rounded down to a page boundary
- before calculating this offset. This should not be a problem unless
- the low bits of start_addr and region_offset differ. */
static void register_subpage(MemoryRegionSection *section)
{
subpage_t *subpage;
subpage = container_of(existing->mr, subpage_t, iomem);
}
start = section->offset_within_address_space & ~TARGET_PAGE_MASK;
- end = start + section->size;
+ end = start + section->size - 1;
subpage_register(subpage, start, end, phys_section_add(section));
}
remain.offset_within_address_space += now.size;
remain.offset_within_region += now.size;
}
- now = remain;
- now.size &= TARGET_PAGE_MASK;
- if (now.size) {
- register_multipage(&now);
+ while (remain.size >= TARGET_PAGE_SIZE) {
+ now = remain;
+ if (remain.offset_within_region & ~TARGET_PAGE_MASK) {
+ now.size = TARGET_PAGE_SIZE;
+ register_subpage(&now);
+ } else {
+ now.size &= TARGET_PAGE_MASK;
+ register_multipage(&now);
+ }
remain.size -= now.size;
remain.offset_within_address_space += now.size;
remain.offset_within_region += now.size;
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;
exit(1);
#endif
} else {
-#if defined(TARGET_S390X) && defined(CONFIG_KVM)
- /* S390 KVM requires the topmost vma of the RAM to be smaller than
- an system defined value, which is at least 256GB. Larger systems
- have larger values. We put the guest between the end of data
- segment (system break) and this value. We use 32GB as a base to
- have enough room for the system break to grow. */
- new_block->host = mmap((void*)0x800000000, size,
- PROT_EXEC|PROT_READ|PROT_WRITE,
- MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
- if (new_block->host == MAP_FAILED) {
- fprintf(stderr, "Allocating RAM failed\n");
- abort();
- }
-#else
if (xen_enabled()) {
xen_ram_alloc(new_block->offset, size, mr);
+ } else if (kvm_enabled()) {
+ /* some s390/kvm configurations have special constraints */
+ new_block->host = kvm_vmalloc(size);
} else {
new_block->host = qemu_vmalloc(size);
}
-#endif
qemu_madvise(new_block->host, size, QEMU_MADV_MERGEABLE);
}
}
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);
exit(1);
}
qemu_madvise(vaddr, length, QEMU_MADV_MERGEABLE);
+ qemu_ram_setup_dump(vaddr, length);
}
return;
}
static void core_eventfd_add(MemoryListener *listener,
MemoryRegionSection *section,
- bool match_data, uint64_t data, int fd)
+ bool match_data, uint64_t data, EventNotifier *e)
{
}
static void core_eventfd_del(MemoryListener *listener,
MemoryRegionSection *section,
- bool match_data, uint64_t data, int fd)
+ bool match_data, uint64_t data, EventNotifier *e)
{
}
static void io_eventfd_add(MemoryListener *listener,
MemoryRegionSection *section,
- bool match_data, uint64_t data, int fd)
+ bool match_data, uint64_t data, EventNotifier *e)
{
}
static void io_eventfd_del(MemoryListener *listener,
MemoryRegionSection *section,
- bool match_data, uint64_t data, int fd)
+ bool match_data, uint64_t data, EventNotifier *e)
{
}
/* 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;