1 files changed, 69 insertions, 34 deletions

diff --git a/vl.c b/vl.c
index db9ea90a1d..236f95efd7 100644
--- a/vl.c
+++ b/vl.c
@@ -510,6 +510,20 @@ static QemuOptsList qemu_name_opts = {
     },
 };
 
+static QemuOptsList qemu_mem_opts = {
+    .name = "memory",
+    .implied_opt_name = "size",
+    .head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
+    .merge_lists = true,
+    .desc = {
+        {
+            .name = "size",
+            .type = QEMU_OPT_SIZE,
+        },
+        { /* end of list */ }
+    },
+};
+
 /**
  * Get machine options
  *
@@ -517,16 +531,7 @@ static QemuOptsList qemu_name_opts = {
  */
 QemuOpts *qemu_get_machine_opts(void)
 {
-    QemuOptsList *list;
-    QemuOpts *opts;
-
-    list = qemu_find_opts("machine");
-    assert(list);
-    opts = qemu_opts_find(list, NULL);
-    if (!opts) {
-        opts = qemu_opts_create(list, NULL, 0, &error_abort);
-    }
-    return opts;
+    return qemu_find_opts_singleton("machine");
 }
 
 const char *qemu_get_vm_name(void)
@@ -2964,6 +2969,8 @@ int main(int argc, char **argv, char **envp)
     };
     const char *trace_events = NULL;
     const char *trace_file = NULL;
+    const ram_addr_t default_ram_size = (ram_addr_t)DEFAULT_RAM_SIZE *
+                                        1024 * 1024;
 
     atexit(qemu_run_exit_notifiers);
     error_set_progname(argv[0]);
@@ -2987,6 +2994,7 @@ int main(int argc, char **argv, char **envp)
     qemu_add_opts(&qemu_trace_opts);
     qemu_add_opts(&qemu_option_rom_opts);
     qemu_add_opts(&qemu_machine_opts);
+    qemu_add_opts(&qemu_mem_opts);
     qemu_add_opts(&qemu_smp_opts);
     qemu_add_opts(&qemu_boot_opts);
     qemu_add_opts(&qemu_sandbox_opts);
@@ -3011,7 +3019,7 @@ int main(int argc, char **argv, char **envp)
     module_call_init(MODULE_INIT_MACHINE);
     machine_class = find_default_machine();
     cpu_model = NULL;
-    ram_size = 0;
+    ram_size = default_ram_size;
     snapshot = 0;
     cyls = heads = secs = 0;
     translation = BIOS_ATA_TRANSLATION_AUTO;
@@ -3034,7 +3042,6 @@ int main(int argc, char **argv, char **envp)
         if (argv[optind][0] != '-') {
             /* disk image */
             optind++;
-            continue;
         } else {
             const QEMUOption *popt;
 
@@ -3298,20 +3305,48 @@ int main(int argc, char **argv, char **envp)
                 exit(0);
                 break;
             case QEMU_OPTION_m: {
-                int64_t value;
                 uint64_t sz;
-                char *end;
+                const char *mem_str;
 
-                value = strtosz(optarg, &end);
-                if (value < 0 || *end) {
-                    fprintf(stderr, "qemu: invalid ram size: %s\n", optarg);
-                    exit(1);
+                opts = qemu_opts_parse(qemu_find_opts("memory"),
+                                       optarg, 1);
+                if (!opts) {
+                    exit(EXIT_FAILURE);
+                }
+
+                mem_str = qemu_opt_get(opts, "size");
+                if (!mem_str) {
+                    error_report("invalid -m option, missing 'size' option");
+                    exit(EXIT_FAILURE);
+                }
+                if (!*mem_str) {
+                    error_report("missing 'size' option value");
+                    exit(EXIT_FAILURE);
                 }
-                sz = QEMU_ALIGN_UP((uint64_t)value, 8192);
+
+                sz = qemu_opt_get_size(opts, "size", ram_size);
+
+                /* Fix up legacy suffix-less format */
+                if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
+                    uint64_t overflow_check = sz;
+
+                    sz <<= 20;
+                    if ((sz >> 20) != overflow_check) {
+                        error_report("too large 'size' option value");
+                        exit(EXIT_FAILURE);
+                    }
+                }
+
+                /* backward compatibility behaviour for case "-m 0" */
+                if (sz == 0) {
+                    sz = default_ram_size;
+                }
+
+                sz = QEMU_ALIGN_UP(sz, 8192);
                 ram_size = sz;
                 if (ram_size != sz) {
-                    fprintf(stderr, "qemu: ram size too large\n");
-                    exit(1);
+                    error_report("ram size too large");
+                    exit(EXIT_FAILURE);
                 }
                 break;
             }
@@ -3855,7 +3890,9 @@ int main(int argc, char **argv, char **envp)
                         }
                     }
                     qemu_config_write(fp);
-                    fclose(fp);
+                    if (fp != stdout) {
+                        fclose(fp);
+                    }
                     break;
                 }
             case QEMU_OPTION_qtest:
@@ -4154,10 +4191,8 @@ int main(int argc, char **argv, char **envp)
         exit(1);
     }
 
-    /* init the memory */
-    if (ram_size == 0) {
-        ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
-    }
+    /* store value for the future use */
+    qemu_opt_set_number(qemu_find_opts_singleton("memory"), "size", ram_size);
 
     if (qemu_opts_foreach(qemu_find_opts("device"), device_help_func, NULL, 0)
         != 0) {
@@ -4371,15 +4406,15 @@ int main(int argc, char **argv, char **envp)
 
     qdev_machine_init();
 
-    QEMUMachineInitArgs args = { .machine = machine,
-                                 .ram_size = ram_size,
-                                 .boot_order = boot_order,
-                                 .kernel_filename = kernel_filename,
-                                 .kernel_cmdline = kernel_cmdline,
-                                 .initrd_filename = initrd_filename,
-                                 .cpu_model = cpu_model };
+    current_machine->init_args = (QEMUMachineInitArgs) {
+        .machine = machine,
+        .ram_size = ram_size,
+        .boot_order = boot_order,
+        .kernel_filename = kernel_filename,
+        .kernel_cmdline = kernel_cmdline,
+        .initrd_filename = initrd_filename,
+        .cpu_model = cpu_model };
 
-    current_machine->init_args = args;
     machine->init(&current_machine->init_args);
 
     audio_init();