diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 84 |
1 files changed, 26 insertions, 58 deletions
@@ -2809,7 +2809,7 @@ static ram_addr_t last_ram_offset(void) } ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name, - ram_addr_t size, void *host) + ram_addr_t size, void *host) { RAMBlock *new_block, *block; @@ -2833,74 +2833,37 @@ ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name, } } - new_block->host = host; - - new_block->offset = find_ram_offset(size); - new_block->length = size; - - QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next); - - ram_list.phys_dirty = qemu_realloc(ram_list.phys_dirty, - last_ram_offset() >> TARGET_PAGE_BITS); - memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS), - 0xff, size >> TARGET_PAGE_BITS); - - if (kvm_enabled()) - kvm_setup_guest_memory(new_block->host, size); - - return new_block->offset; -} - -ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size) -{ - RAMBlock *new_block, *block; - - size = TARGET_PAGE_ALIGN(size); - new_block = qemu_mallocz(sizeof(*new_block)); - - if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { - char *id = dev->parent_bus->info->get_dev_path(dev); - if (id) { - snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); - qemu_free(id); - } - } - pstrcat(new_block->idstr, sizeof(new_block->idstr), name); - - QLIST_FOREACH(block, &ram_list.blocks, next) { - if (!strcmp(block->idstr, new_block->idstr)) { - fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", - new_block->idstr); - abort(); - } - } - - if (mem_path) { + if (host) { + new_block->host = host; + } else { + if (mem_path) { #if defined (__linux__) && !defined(TARGET_S390X) - new_block->host = file_ram_alloc(new_block, size, mem_path); - if (!new_block->host) { - new_block->host = qemu_vmalloc(size); + new_block->host = file_ram_alloc(new_block, size, mem_path); + if (!new_block->host) { + new_block->host = qemu_vmalloc(size); #ifdef MADV_MERGEABLE - madvise(new_block->host, size, MADV_MERGEABLE); + madvise(new_block->host, size, MADV_MERGEABLE); #endif - } + } #else - fprintf(stderr, "-mem-path option unsupported\n"); - exit(1); + fprintf(stderr, "-mem-path option unsupported\n"); + exit(1); #endif - } else { + } else { #if defined(TARGET_S390X) && defined(CONFIG_KVM) - /* XXX S390 KVM requires the topmost vma of the RAM to be < 256GB */ - new_block->host = mmap((void*)0x1000000, size, - PROT_EXEC|PROT_READ|PROT_WRITE, - MAP_SHARED | MAP_ANONYMOUS, -1, 0); + /* XXX S390 KVM requires the topmost vma of the RAM to be < 256GB */ + new_block->host = mmap((void*)0x1000000, size, + PROT_EXEC|PROT_READ|PROT_WRITE, + MAP_SHARED | MAP_ANONYMOUS, -1, 0); #else - new_block->host = qemu_vmalloc(size); + new_block->host = qemu_vmalloc(size); #endif #ifdef MADV_MERGEABLE - madvise(new_block->host, size, MADV_MERGEABLE); + madvise(new_block->host, size, MADV_MERGEABLE); #endif + } } + new_block->offset = find_ram_offset(size); new_block->length = size; @@ -2917,6 +2880,11 @@ ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size) return new_block->offset; } +ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size) +{ + return qemu_ram_alloc_from_ptr(dev, name, size, NULL); +} + void qemu_ram_free(ram_addr_t addr) { RAMBlock *block; |