diff options
| -rw-r--r-- | accel/kvm/kvm-all.c | 68 |
1 files changed, 11 insertions, 57 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 88b0e631bd..b677d1b13e 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -725,7 +725,7 @@ kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list) static void kvm_set_phys_mem(KVMMemoryListener *kml, MemoryRegionSection *section, bool add) { - KVMSlot *mem, old; + KVMSlot *mem; int err; MemoryRegion *mr = section->mr; bool writeable = !mr->readonly && !mr->rom_device; @@ -750,28 +750,17 @@ static void kvm_set_phys_mem(KVMMemoryListener *kml, ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + (section->offset_within_address_space - start_addr); - while (1) { - mem = kvm_lookup_overlapping_slot(kml, start_addr, start_addr + size); + mem = kvm_lookup_matching_slot(kml, start_addr, size); + if (!add) { if (!mem) { - break; - } - - if (add && start_addr >= mem->start_addr && - (start_addr + size <= mem->start_addr + mem->memory_size) && - (ram - start_addr == mem->ram - mem->start_addr)) { - /* The new slot fits into the existing one and comes with - * identical parameters - update flags and done. */ - kvm_slot_update_flags(kml, mem, mr); + g_assert(!memory_region_is_ram(mr) && !writeable && !mr->romd_mode); return; } - - old = *mem; - if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) { kvm_physical_sync_dirty_bitmap(kml, section); } - /* unregister the overlapping slot */ + /* unregister the slot */ mem->memory_size = 0; err = kvm_set_user_memory_region(kml, mem); if (err) { @@ -779,51 +768,16 @@ static void kvm_set_phys_mem(KVMMemoryListener *kml, __func__, strerror(-err)); abort(); } - - /* register prefix slot */ - if (old.start_addr < start_addr) { - mem = kvm_alloc_slot(kml); - mem->memory_size = start_addr - old.start_addr; - mem->start_addr = old.start_addr; - mem->ram = old.ram; - mem->flags = kvm_mem_flags(mr); - - err = kvm_set_user_memory_region(kml, mem); - if (err) { - fprintf(stderr, "%s: error registering prefix slot: %s\n", - __func__, strerror(-err)); -#ifdef TARGET_PPC - fprintf(stderr, "%s: This is probably because your kernel's " \ - "PAGE_SIZE is too big. Please try to use 4k " \ - "PAGE_SIZE!\n", __func__); -#endif - abort(); - } - } - - /* register suffix slot */ - if (old.start_addr + old.memory_size > start_addr + size) { - ram_addr_t size_delta; - - mem = kvm_alloc_slot(kml); - mem->start_addr = start_addr + size; - size_delta = mem->start_addr - old.start_addr; - mem->memory_size = old.memory_size - size_delta; - mem->ram = old.ram + size_delta; - mem->flags = kvm_mem_flags(mr); - - err = kvm_set_user_memory_region(kml, mem); - if (err) { - fprintf(stderr, "%s: error registering suffix slot: %s\n", - __func__, strerror(-err)); - abort(); - } - } + return; } - if (!add) { + if (mem) { + /* update the slot */ + kvm_slot_update_flags(kml, mem, mr); return; } + + /* register the new slot */ mem = kvm_alloc_slot(kml); mem->memory_size = size; mem->start_addr = start_addr; |