#include "exec/ioport.h"
#include "sysemu/dma.h"
#include "sysemu/numa.h"
+#include "sysemu/hw_accel.h"
#include "exec/address-spaces.h"
#include "sysemu/xen-mapcache.h"
#include "trace-root.h"
MemoryListener tcg_as_listener;
};
+struct DirtyBitmapSnapshot {
+ ram_addr_t start;
+ ram_addr_t end;
+ unsigned long dirty[];
+};
+
#endif
#if !defined(CONFIG_USER_ONLY)
return dirty;
}
+DirtyBitmapSnapshot *cpu_physical_memory_snapshot_and_clear_dirty
+ (ram_addr_t start, ram_addr_t length, unsigned client)
+{
+ DirtyMemoryBlocks *blocks;
+ unsigned long align = 1UL << (TARGET_PAGE_BITS + BITS_PER_LEVEL);
+ ram_addr_t first = QEMU_ALIGN_DOWN(start, align);
+ ram_addr_t last = QEMU_ALIGN_UP(start + length, align);
+ DirtyBitmapSnapshot *snap;
+ unsigned long page, end, dest;
+
+ snap = g_malloc0(sizeof(*snap) +
+ ((last - first) >> (TARGET_PAGE_BITS + 3)));
+ snap->start = first;
+ snap->end = last;
+
+ page = first >> TARGET_PAGE_BITS;
+ end = last >> TARGET_PAGE_BITS;
+ dest = 0;
+
+ rcu_read_lock();
+
+ blocks = atomic_rcu_read(&ram_list.dirty_memory[client]);
+
+ while (page < end) {
+ unsigned long idx = page / DIRTY_MEMORY_BLOCK_SIZE;
+ unsigned long offset = page % DIRTY_MEMORY_BLOCK_SIZE;
+ unsigned long num = MIN(end - page, DIRTY_MEMORY_BLOCK_SIZE - offset);
+
+ assert(QEMU_IS_ALIGNED(offset, (1 << BITS_PER_LEVEL)));
+ assert(QEMU_IS_ALIGNED(num, (1 << BITS_PER_LEVEL)));
+ offset >>= BITS_PER_LEVEL;
+
+ bitmap_copy_and_clear_atomic(snap->dirty + dest,
+ blocks->blocks[idx] + offset,
+ num);
+ page += num;
+ dest += num >> BITS_PER_LEVEL;
+ }
+
+ rcu_read_unlock();
+
+ if (tcg_enabled()) {
+ tlb_reset_dirty_range_all(start, length);
+ }
+
+ return snap;
+}
+
+bool cpu_physical_memory_snapshot_get_dirty(DirtyBitmapSnapshot *snap,
+ ram_addr_t start,
+ ram_addr_t length)
+{
+ unsigned long page, end;
+
+ assert(start >= snap->start);
+ assert(start + length <= snap->end);
+
+ end = TARGET_PAGE_ALIGN(start + length - snap->start) >> TARGET_PAGE_BITS;
+ page = (start - snap->start) >> TARGET_PAGE_BITS;
+
+ while (page < end) {
+ if (test_bit(page, snap->dirty)) {
+ return true;
+ }
+ page++;
+ }
+ return false;
+}
+
/* Called from RCU critical section */
hwaddr memory_region_section_get_iotlb(CPUState *cpu,
MemoryRegionSection *section,
}
if (mem_prealloc) {
- os_mem_prealloc(fd, area, memory, errp);
+ os_mem_prealloc(fd, area, memory, smp_cpus, errp);
if (errp && *errp) {
goto error;
}
return offset;
}
-ram_addr_t last_ram_offset(void)
+unsigned long last_ram_page(void)
{
RAMBlock *block;
ram_addr_t last = 0;
last = MAX(last, block->offset + block->max_length);
}
rcu_read_unlock();
- return last;
+ return last >> TARGET_PAGE_BITS;
}
static void qemu_ram_setup_dump(void *addr, ram_addr_t size)
return rb->idstr;
}
+bool qemu_ram_is_shared(RAMBlock *rb)
+{
+ return rb->flags & RAM_SHARED;
+}
+
/* Called with iothread lock held. */
void qemu_ram_set_idstr(RAMBlock *new_block, const char *name, DeviceState *dev)
{
ram_addr_t old_ram_size, new_ram_size;
Error *err = NULL;
- old_ram_size = last_ram_offset() >> TARGET_PAGE_BITS;
+ old_ram_size = last_ram_page();
qemu_mutex_lock_ramlist();
new_block->offset = find_ram_offset(new_block->max_length);
new_ram_size = MAX(old_ram_size,
(new_block->offset + new_block->max_length) >> TARGET_PAGE_BITS);
if (new_ram_size > old_ram_size) {
- migration_bitmap_extend(old_ram_size, new_ram_size);
dirty_memory_extend(old_ram_size, new_ram_size);
}
/* Keep the list sorted from biggest to smallest block. Unlike QTAILQ,
hwaddr len,
bool is_write)
{
- hwaddr l, xlat;
- MemoryRegion *mr;
- void *ptr;
-
- assert(len > 0);
-
- l = len;
- mr = address_space_translate(as, addr, &xlat, &l, is_write);
- if (!memory_access_is_direct(mr, is_write)) {
- return -EINVAL;
- }
-
- l = address_space_extend_translation(as, addr, len, mr, xlat, l, is_write);
- ptr = qemu_ram_ptr_length(mr->ram_block, xlat, &l);
-
- cache->xlat = xlat;
- cache->is_write = is_write;
- cache->mr = mr;
- cache->ptr = ptr;
- cache->len = l;
- memory_region_ref(cache->mr);
-
- return l;
+ cache->len = len;
+ cache->as = as;
+ cache->xlat = addr;
+ return len;
}
void address_space_cache_invalidate(MemoryRegionCache *cache,
hwaddr addr,
hwaddr access_len)
{
- assert(cache->is_write);
- invalidate_and_set_dirty(cache->mr, addr + cache->xlat, access_len);
}
void address_space_cache_destroy(MemoryRegionCache *cache)
{
- if (!cache->mr) {
- return;
- }
-
- if (xen_enabled()) {
- xen_invalidate_map_cache_entry(cache->ptr);
- }
- memory_region_unref(cache->mr);
- cache->mr = NULL;
-}
-
-/* Called from RCU critical section. This function has the same
- * semantics as address_space_translate, but it only works on a
- * predefined range of a MemoryRegion that was mapped with
- * address_space_cache_init.
- */
-static inline MemoryRegion *address_space_translate_cached(
- MemoryRegionCache *cache, hwaddr addr, hwaddr *xlat,
- hwaddr *plen, bool is_write)
-{
- assert(addr < cache->len && *plen <= cache->len - addr);
- *xlat = addr + cache->xlat;
- return cache->mr;
+ cache->as = NULL;
}
#define ARG1_DECL MemoryRegionCache *cache
#define ARG1 cache
#define SUFFIX _cached
-#define TRANSLATE(...) address_space_translate_cached(cache, __VA_ARGS__)
+#define TRANSLATE(addr, ...) \
+ address_space_translate(cache->as, cache->xlat + (addr), __VA_ARGS__)
#define IS_DIRECT(mr, is_write) true
-#define MAP_RAM(mr, ofs) (cache->ptr + (ofs - cache->xlat))
-#define INVALIDATE(mr, ofs, len) ((void)0)
-#define RCU_READ_LOCK() ((void)0)
-#define RCU_READ_UNLOCK() ((void)0)
+#define MAP_RAM(mr, ofs) qemu_map_ram_ptr((mr)->ram_block, ofs)
+#define INVALIDATE(mr, ofs, len) invalidate_and_set_dirty(mr, ofs, len)
+#define RCU_READ_LOCK() rcu_read_lock()
+#define RCU_READ_UNLOCK() rcu_read_unlock()
#include "memory_ldst.inc.c"
/* virtual memory access for debug (includes writing to ROM) */
hwaddr phys_addr;
target_ulong page;
+ cpu_synchronize_state(cpu);
while (len > 0) {
int asidx;
MemTxAttrs attrs;
* Allows code that needs to deal with migration bitmaps etc to still be built
* target independent.
*/
-size_t qemu_target_page_bits(void)
+size_t qemu_target_page_size(void)
{
- return TARGET_PAGE_BITS;
+ return TARGET_PAGE_SIZE;
}
#endif
projects / qemu.git / blobdiff