diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 59 |
1 files changed, 19 insertions, 40 deletions
@@ -59,8 +59,6 @@ //#define DEBUG_SUBPAGE #if !defined(CONFIG_USER_ONLY) -static bool in_migration; - /* ram_list is read under rcu_read_lock()/rcu_read_unlock(). Writes * are protected by the ramlist lock. */ @@ -866,11 +864,6 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t length, } } -static void cpu_physical_memory_set_dirty_tracking(bool enable) -{ - in_migration = enable; -} - /* Called from RCU critical section */ hwaddr memory_region_section_get_iotlb(CPUState *cpu, MemoryRegionSection *section, @@ -2161,22 +2154,6 @@ static void tcg_commit(MemoryListener *listener) } } -static void core_log_global_start(MemoryListener *listener) -{ - cpu_physical_memory_set_dirty_tracking(true); -} - -static void core_log_global_stop(MemoryListener *listener) -{ - cpu_physical_memory_set_dirty_tracking(false); -} - -static MemoryListener core_memory_listener = { - .log_global_start = core_log_global_start, - .log_global_stop = core_log_global_stop, - .priority = 1, -}; - void address_space_init_dispatch(AddressSpace *as) { as->dispatch = NULL; @@ -2216,8 +2193,6 @@ static void memory_map_init(void) memory_region_init_io(system_io, NULL, &unassigned_io_ops, NULL, "io", 65536); address_space_init(&address_space_io, system_io, "I/O"); - - memory_listener_register(&core_memory_listener, &address_space_memory); } MemoryRegion *get_system_memory(void) @@ -2275,12 +2250,18 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, #else -static void invalidate_and_set_dirty(hwaddr addr, +static void invalidate_and_set_dirty(MemoryRegion *mr, hwaddr addr, hwaddr length) { if (cpu_physical_memory_range_includes_clean(addr, length)) { - tb_invalidate_phys_range(addr, addr + length, 0); - cpu_physical_memory_set_dirty_range_nocode(addr, length); + uint8_t dirty_log_mask = memory_region_get_dirty_log_mask(mr); + if (dirty_log_mask & (1 << DIRTY_MEMORY_CODE)) { + tb_invalidate_phys_range(addr, addr + length, 0); + dirty_log_mask &= ~(1 << DIRTY_MEMORY_CODE); + } + if (dirty_log_mask) { + cpu_physical_memory_set_dirty_range_nocode(addr, length); + } } else { xen_modified_memory(addr, length); } @@ -2368,7 +2349,7 @@ MemTxResult address_space_rw(AddressSpace *as, hwaddr addr, MemTxAttrs attrs, /* RAM case */ ptr = qemu_get_ram_ptr(addr1); memcpy(ptr, buf, l); - invalidate_and_set_dirty(addr1, l); + invalidate_and_set_dirty(mr, addr1, l); } } else { if (!memory_access_is_direct(mr, is_write)) { @@ -2465,7 +2446,7 @@ static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, switch (type) { case WRITE_DATA: memcpy(ptr, buf, l); - invalidate_and_set_dirty(addr1, l); + invalidate_and_set_dirty(mr, addr1, l); break; case FLUSH_CACHE: flush_icache_range((uintptr_t)ptr, (uintptr_t)ptr + l); @@ -2690,7 +2671,7 @@ void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len, mr = qemu_ram_addr_from_host(buffer, &addr1); assert(mr != NULL); if (is_write) { - invalidate_and_set_dirty(addr1, access_len); + invalidate_and_set_dirty(mr, addr1, access_len); } if (xen_enabled()) { xen_invalidate_map_cache_entry(buffer); @@ -3019,6 +3000,7 @@ void address_space_stl_notdirty(AddressSpace *as, hwaddr addr, uint32_t val, hwaddr l = 4; hwaddr addr1; MemTxResult r; + uint8_t dirty_log_mask; rcu_read_lock(); mr = address_space_translate(as, addr, &addr1, &l, @@ -3030,13 +3012,10 @@ void address_space_stl_notdirty(AddressSpace *as, hwaddr addr, uint32_t val, ptr = qemu_get_ram_ptr(addr1); stl_p(ptr, val); - if (unlikely(in_migration)) { - 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_range_nocode(addr1, 4); - } + dirty_log_mask = memory_region_get_dirty_log_mask(mr); + dirty_log_mask &= ~(1 << DIRTY_MEMORY_CODE); + if (dirty_log_mask) { + cpu_physical_memory_set_dirty_range_nocode(addr1, 4); } r = MEMTX_OK; } @@ -3093,7 +3072,7 @@ static inline void address_space_stl_internal(AddressSpace *as, stl_p(ptr, val); break; } - invalidate_and_set_dirty(addr1, 4); + invalidate_and_set_dirty(mr, addr1, 4); r = MEMTX_OK; } if (result) { @@ -3197,7 +3176,7 @@ static inline void address_space_stw_internal(AddressSpace *as, stw_p(ptr, val); break; } - invalidate_and_set_dirty(addr1, 2); + invalidate_and_set_dirty(mr, addr1, 2); r = MEMTX_OK; } if (result) { |