diff options
| -rw-r--r-- | exec.c | 105 | ||||
| -rw-r--r-- | include/exec/cpu-all.h | 3 | ||||
| -rw-r--r-- | include/exec/ram_addr.h | 2 | ||||
| -rw-r--r-- | include/sysemu/sysemu.h | 2 | ||||
| -rw-r--r-- | memory.c | 7 |
5 files changed, 73 insertions, 46 deletions
@@ -1262,56 +1262,30 @@ static int memory_try_enable_merging(void *addr, size_t len) return qemu_madvise(addr, len, QEMU_MADV_MERGEABLE); } -ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, - MemoryRegion *mr) +static ram_addr_t ram_block_add(RAMBlock *new_block) { - RAMBlock *block, *new_block; + RAMBlock *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)); - new_block->fd = -1; - /* This assumes the iothread lock is taken here too. */ qemu_mutex_lock_ramlist(); - new_block->mr = mr; - new_block->offset = find_ram_offset(size); - if (host) { - new_block->host = host; - new_block->flags |= RAM_PREALLOC_MASK; - } else if (xen_enabled()) { - if (mem_path) { - fprintf(stderr, "-mem-path not supported with Xen\n"); - exit(1); - } - xen_ram_alloc(new_block->offset, size, mr); - } else { - if (mem_path) { - if (phys_mem_alloc != qemu_anon_ram_alloc) { - /* - * file_ram_alloc() needs to allocate just like - * phys_mem_alloc, but we haven't bothered to provide - * a hook there. - */ - fprintf(stderr, - "-mem-path not supported with this accelerator\n"); - exit(1); - } - new_block->host = file_ram_alloc(new_block, size, mem_path); - } - if (!new_block->host) { - new_block->host = phys_mem_alloc(size); + new_block->offset = find_ram_offset(new_block->length); + + if (!new_block->host) { + if (xen_enabled()) { + xen_ram_alloc(new_block->offset, new_block->length, new_block->mr); + } else { + new_block->host = phys_mem_alloc(new_block->length); if (!new_block->host) { fprintf(stderr, "Cannot set up guest memory '%s': %s\n", new_block->mr->name, strerror(errno)); exit(1); } - memory_try_enable_merging(new_block->host, size); + memory_try_enable_merging(new_block->host, new_block->length); } } - new_block->length = size; /* Keep the list sorted from biggest to smallest block. */ QTAILQ_FOREACH(block, &ram_list.blocks, next) { @@ -1339,18 +1313,65 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, old_ram_size, new_ram_size); } } - cpu_physical_memory_set_dirty_range(new_block->offset, size); + cpu_physical_memory_set_dirty_range(new_block->offset, new_block->length); - qemu_ram_setup_dump(new_block->host, size); - qemu_madvise(new_block->host, size, QEMU_MADV_HUGEPAGE); - qemu_madvise(new_block->host, size, QEMU_MADV_DONTFORK); + qemu_ram_setup_dump(new_block->host, new_block->length); + qemu_madvise(new_block->host, new_block->length, QEMU_MADV_HUGEPAGE); + qemu_madvise(new_block->host, new_block->length, QEMU_MADV_DONTFORK); - if (kvm_enabled()) - kvm_setup_guest_memory(new_block->host, size); + if (kvm_enabled()) { + kvm_setup_guest_memory(new_block->host, new_block->length); + } return new_block->offset; } +ram_addr_t qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, + const char *mem_path) +{ + RAMBlock *new_block; + + if (xen_enabled()) { + fprintf(stderr, "-mem-path not supported with Xen\n"); + exit(1); + } + + if (phys_mem_alloc != qemu_anon_ram_alloc) { + /* + * file_ram_alloc() needs to allocate just like + * phys_mem_alloc, but we haven't bothered to provide + * a hook there. + */ + fprintf(stderr, + "-mem-path not supported with this accelerator\n"); + exit(1); + } + + size = TARGET_PAGE_ALIGN(size); + new_block = g_malloc0(sizeof(*new_block)); + new_block->mr = mr; + new_block->length = size; + new_block->host = file_ram_alloc(new_block, size, mem_path); + return ram_block_add(new_block); +} + +ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, + MemoryRegion *mr) +{ + RAMBlock *new_block; + + size = TARGET_PAGE_ALIGN(size); + new_block = g_malloc0(sizeof(*new_block)); + new_block->mr = mr; + new_block->length = size; + new_block->fd = -1; + new_block->host = host; + if (host) { + new_block->flags |= RAM_PREALLOC_MASK; + } + return ram_block_add(new_block); +} + ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr) { return qemu_ram_alloc_from_ptr(size, NULL, mr); diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index ed28f1e..eaddea6 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -325,9 +325,6 @@ typedef struct RAMList { } RAMList; extern RAMList ram_list; -extern const char *mem_path; -extern int mem_prealloc; - /* Flags stored in the low bits of the TLB virtual address. These are defined so that fast path ram access is all zeros. */ /* Zero if TLB entry is valid. */ diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h index b94de02..9b00638 100644 --- a/include/exec/ram_addr.h +++ b/include/exec/ram_addr.h @@ -22,6 +22,8 @@ #ifndef CONFIG_USER_ONLY #include "hw/xen/xen.h" +ram_addr_t qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, + const char *mem_path); ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, MemoryRegion *mr); ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr); diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h index caf88dd..c4e1bbd 100644 --- a/include/sysemu/sysemu.h +++ b/include/sysemu/sysemu.h @@ -133,6 +133,8 @@ extern uint8_t *boot_splash_filedata; extern size_t boot_splash_filedata_size; extern uint8_t qemu_extra_params_fw[2]; extern QEMUClockType rtc_clock; +extern const char *mem_path; +extern int mem_prealloc; #define MAX_NODES 128 @@ -23,6 +23,7 @@ #include "exec/memory-internal.h" #include "exec/ram_addr.h" +#include "sysemu/sysemu.h" //#define DEBUG_UNASSIGNED @@ -1029,7 +1030,11 @@ void memory_region_init_ram(MemoryRegion *mr, mr->ram = true; mr->terminates = true; mr->destructor = memory_region_destructor_ram; - mr->ram_addr = qemu_ram_alloc(size, mr); + if (mem_path) { + mr->ram_addr = qemu_ram_alloc_from_file(size, mr, mem_path); + } else { + mr->ram_addr = qemu_ram_alloc(size, mr); + } } void memory_region_init_ram_ptr(MemoryRegion *mr, |