diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 76 |
1 files changed, 40 insertions, 36 deletions
@@ -50,6 +50,7 @@ #include "translate-all.h" #include "exec/memory-internal.h" +#include "exec/ram_addr.h" #include "qemu/cache-utils.h" #include "qemu/range.h" @@ -57,7 +58,7 @@ //#define DEBUG_SUBPAGE #if !defined(CONFIG_USER_ONLY) -static int in_migration; +static bool in_migration; RAMList ram_list = { .blocks = QTAILQ_HEAD_INITIALIZER(ram_list.blocks) }; @@ -724,11 +725,14 @@ found: return block; } -static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t end, - uintptr_t length) +static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t length) { - RAMBlock *block; ram_addr_t start1; + RAMBlock *block; + ram_addr_t end; + + end = TARGET_PAGE_ALIGN(start + length); + start &= TARGET_PAGE_MASK; block = qemu_get_ram_block(start); assert(block == qemu_get_ram_block(end - 1)); @@ -737,29 +741,21 @@ static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t end, } /* Note: start and end must be within the same ram block. */ -void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, - int dirty_flags) +void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t length, + unsigned client) { - uintptr_t length; - - start &= TARGET_PAGE_MASK; - end = TARGET_PAGE_ALIGN(end); - - length = end - start; if (length == 0) return; - cpu_physical_memory_mask_dirty_range(start, length, dirty_flags); + cpu_physical_memory_clear_dirty_range(start, length, client); if (tcg_enabled()) { - tlb_reset_dirty_range_all(start, end, length); + tlb_reset_dirty_range_all(start, length); } } -static int cpu_physical_memory_set_dirty_tracking(int enable) +static void cpu_physical_memory_set_dirty_tracking(bool enable) { - int ret = 0; in_migration = enable; - return ret; } hwaddr memory_region_section_get_iotlb(CPUArchState *env, @@ -1211,6 +1207,9 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, MemoryRegion *mr) { RAMBlock *block, *new_block; + ram_addr_t old_ram_size, new_ram_size; + + old_ram_size = last_ram_offset() >> TARGET_PAGE_BITS; size = TARGET_PAGE_ALIGN(size); new_block = g_malloc0(sizeof(*new_block)); @@ -1271,11 +1270,17 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, ram_list.version++; qemu_mutex_unlock_ramlist(); - 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); + new_ram_size = last_ram_offset() >> TARGET_PAGE_BITS; + + if (new_ram_size > old_ram_size) { + int i; + for (i = 0; i < DIRTY_MEMORY_NUM; i++) { + ram_list.dirty_memory[i] = + bitmap_zero_extend(ram_list.dirty_memory[i], + old_ram_size, new_ram_size); + } + } + cpu_physical_memory_set_dirty_range(new_block->offset, size); qemu_ram_setup_dump(new_block->host, size); qemu_madvise(new_block->host, size, QEMU_MADV_HUGEPAGE); @@ -1485,11 +1490,8 @@ found: static void notdirty_mem_write(void *opaque, hwaddr ram_addr, uint64_t val, unsigned size) { - int dirty_flags; - dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); - if (!(dirty_flags & CODE_DIRTY_FLAG)) { + if (!cpu_physical_memory_get_dirty_flag(ram_addr, DIRTY_MEMORY_CODE)) { tb_invalidate_phys_page_fast(ram_addr, size); - dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); } switch (size) { case 1: @@ -1504,11 +1506,11 @@ static void notdirty_mem_write(void *opaque, hwaddr ram_addr, default: abort(); } - dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); - cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); + cpu_physical_memory_set_dirty_flag(ram_addr, DIRTY_MEMORY_MIGRATION); + cpu_physical_memory_set_dirty_flag(ram_addr, DIRTY_MEMORY_VGA); /* we remove the notdirty callback only if the code has been flushed */ - if (dirty_flags == 0xff) { + if (!cpu_physical_memory_is_clean(ram_addr)) { CPUArchState *env = current_cpu->env_ptr; tlb_set_dirty(env, env->mem_io_vaddr); } @@ -1795,12 +1797,12 @@ static void tcg_commit(MemoryListener *listener) static void core_log_global_start(MemoryListener *listener) { - cpu_physical_memory_set_dirty_tracking(1); + cpu_physical_memory_set_dirty_tracking(true); } static void core_log_global_stop(MemoryListener *listener) { - cpu_physical_memory_set_dirty_tracking(0); + cpu_physical_memory_set_dirty_tracking(false); } static MemoryListener core_memory_listener = { @@ -1911,11 +1913,12 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, static void invalidate_and_set_dirty(hwaddr addr, hwaddr length) { - if (!cpu_physical_memory_is_dirty(addr)) { + if (cpu_physical_memory_is_clean(addr)) { /* invalidate code */ tb_invalidate_phys_page_range(addr, addr + length, 0); /* set dirty bit */ - cpu_physical_memory_set_dirty_flags(addr, (0xff & ~CODE_DIRTY_FLAG)); + cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_VGA); + cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_MIGRATION); } xen_modified_memory(addr, length); } @@ -2526,12 +2529,13 @@ void stl_phys_notdirty(hwaddr addr, uint32_t val) stl_p(ptr, val); if (unlikely(in_migration)) { - if (!cpu_physical_memory_is_dirty(addr1)) { + if (cpu_physical_memory_is_clean(addr1)) { /* invalidate code */ tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); /* set dirty bit */ - cpu_physical_memory_set_dirty_flags( - addr1, (0xff & ~CODE_DIRTY_FLAG)); + cpu_physical_memory_set_dirty_flag(addr1, + DIRTY_MEMORY_MIGRATION); + cpu_physical_memory_set_dirty_flag(addr1, DIRTY_MEMORY_VGA); } } } |