diff options
| -rw-r--r-- | include/hw/boards.h | 2 | ||||
| -rw-r--r-- | qemu-options.hx | 9 | ||||
| -rw-r--r-- | vl.c | 51 |
3 files changed, 59 insertions, 3 deletions
diff --git a/include/hw/boards.h b/include/hw/boards.h index 2d2e2bef19..184d2450ee 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -113,6 +113,8 @@ struct MachineState { char *firmware; ram_addr_t ram_size; + ram_addr_t maxram_size; + uint64_t ram_slots; const char *boot_order; char *kernel_filename; char *kernel_cmdline; diff --git a/qemu-options.hx b/qemu-options.hx index d0714c43a6..5a4eff9aa4 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -210,17 +210,20 @@ use is discouraged as it may be removed from future versions. ETEXI DEF("m", HAS_ARG, QEMU_OPTION_m, - "-m [size=]megs\n" + "-m[emory] [size=]megs[,slots=n,maxmem=size]\n" " configure guest RAM\n" " size: initial amount of guest memory (default: " - stringify(DEFAULT_RAM_SIZE) "MiB)\n", + stringify(DEFAULT_RAM_SIZE) "MiB)\n" + " slots: number of hotplug slots (default: none)\n" + " maxmem: maximum amount of guest memory (default: none)\n", QEMU_ARCH_ALL) STEXI @item -m [size=]@var{megs} @findex -m Set virtual RAM size to @var{megs} megabytes. Default is 128 MiB. Optionally, a suffix of ``M'' or ``G'' can be used to signify a value in megabytes or -gigabytes respectively. +gigabytes respectively. Optional pair @var{slots}, @var{maxmem} could be used +to set amount of hotluggable memory slots and possible maximum amount of memory. ETEXI DEF("mem-path", HAS_ARG, QEMU_OPTION_mempath, @@ -520,6 +520,14 @@ static QemuOptsList qemu_mem_opts = { .name = "size", .type = QEMU_OPT_SIZE, }, + { + .name = "slots", + .type = QEMU_OPT_NUMBER, + }, + { + .name = "maxmem", + .type = QEMU_OPT_SIZE, + }, { /* end of list */ } }, }; @@ -2992,6 +3000,8 @@ int main(int argc, char **argv, char **envp) const char *trace_file = NULL; const ram_addr_t default_ram_size = (ram_addr_t)DEFAULT_RAM_SIZE * 1024 * 1024; + ram_addr_t maxram_size = default_ram_size; + uint64_t ram_slots = 0; atexit(qemu_run_exit_notifiers); error_set_progname(argv[0]); @@ -3327,6 +3337,7 @@ int main(int argc, char **argv, char **envp) case QEMU_OPTION_m: { uint64_t sz; const char *mem_str; + const char *maxmem_str, *slots_str; opts = qemu_opts_parse(qemu_find_opts("memory"), optarg, 1); @@ -3368,6 +3379,44 @@ int main(int argc, char **argv, char **envp) error_report("ram size too large"); exit(EXIT_FAILURE); } + + maxmem_str = qemu_opt_get(opts, "maxmem"); + slots_str = qemu_opt_get(opts, "slots"); + if (maxmem_str && slots_str) { + uint64_t slots; + + sz = qemu_opt_get_size(opts, "maxmem", 0); + if (sz < ram_size) { + fprintf(stderr, "qemu: invalid -m option value: maxmem " + "(%" PRIu64 ") <= initial memory (%" + PRIu64 ")\n", sz, ram_size); + exit(EXIT_FAILURE); + } + + slots = qemu_opt_get_number(opts, "slots", 0); + if ((sz > ram_size) && !slots) { + fprintf(stderr, "qemu: invalid -m option value: maxmem " + "(%" PRIu64 ") more than initial memory (%" + PRIu64 ") but no hotplug slots where " + "specified\n", sz, ram_size); + exit(EXIT_FAILURE); + } + + if ((sz <= ram_size) && slots) { + fprintf(stderr, "qemu: invalid -m option value: %" + PRIu64 " hotplug slots where specified but " + "maxmem (%" PRIu64 ") <= initial memory (%" + PRIu64 ")\n", slots, sz, ram_size); + exit(EXIT_FAILURE); + } + maxram_size = sz; + ram_slots = slots; + } else if ((!maxmem_str && slots_str) || + (maxmem_str && !slots_str)) { + fprintf(stderr, "qemu: invalid -m option value: missing " + "'%s' option\n", slots_str ? "maxmem" : "slots"); + exit(EXIT_FAILURE); + } break; } #ifdef CONFIG_TPM @@ -4436,6 +4485,8 @@ int main(int argc, char **argv, char **envp) qdev_machine_init(); current_machine->ram_size = ram_size; + current_machine->maxram_size = maxram_size; + current_machine->ram_slots = ram_slots; current_machine->boot_order = boot_order; current_machine->cpu_model = cpu_model; |