Example: "-dimm id=dimm0,size=512M,node=0,populated=off" will define a 512M memory slot belonging to numa node 0.
When "populated=on", a DimmDevice is created and hot-plugged at system startup.
Signed-off-by: Vasilis Liaskovitis vasilis.liaskovitis@profitbricks.com --- hw/Makefile.objs | 2 +- qemu-config.c | 25 +++++++++++++++++++++++++ qemu-options.hx | 5 +++++ sysemu.h | 1 + vl.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 82 insertions(+), 1 deletions(-)
diff --git a/hw/Makefile.objs b/hw/Makefile.objs index 6dfebd2..8c5c39a 100644 --- a/hw/Makefile.objs +++ b/hw/Makefile.objs @@ -26,7 +26,7 @@ hw-obj-$(CONFIG_I8254) += i8254_common.o i8254.o hw-obj-$(CONFIG_PCSPK) += pcspk.o hw-obj-$(CONFIG_PCKBD) += pckbd.o hw-obj-$(CONFIG_FDC) += fdc.o -hw-obj-$(CONFIG_ACPI) += acpi.o acpi_piix4.o +hw-obj-$(CONFIG_ACPI) += acpi.o acpi_piix4.o dimm.o hw-obj-$(CONFIG_APM) += pm_smbus.o apm.o hw-obj-$(CONFIG_DMA) += dma.o hw-obj-$(CONFIG_I82374) += i82374.o diff --git a/qemu-config.c b/qemu-config.c index eba977e..4022d64 100644 --- a/qemu-config.c +++ b/qemu-config.c @@ -646,6 +646,30 @@ QemuOptsList qemu_boot_opts = { }, };
+static QemuOptsList qemu_dimm_opts = { + .name = "dimm", + .head = QTAILQ_HEAD_INITIALIZER(qemu_dimm_opts.head), + .desc = { + { + .name = "id", + .type = QEMU_OPT_STRING, + .help = "id of this dimm device", + },{ + .name = "size", + .type = QEMU_OPT_SIZE, + .help = "memory size for this dimm", + },{ + .name = "populated", + .type = QEMU_OPT_BOOL, + .help = "populated for this dimm", + },{ + .name = "node", + .type = QEMU_OPT_NUMBER, + .help = "NUMA node number (i.e. proximity) for this dimm", + }, + { /* end of list */ } + }, +}; static QemuOptsList *vm_config_groups[32] = { &qemu_drive_opts, &qemu_chardev_opts, @@ -662,6 +686,7 @@ static QemuOptsList *vm_config_groups[32] = { &qemu_boot_opts, &qemu_iscsi_opts, &qemu_sandbox_opts, + &qemu_dimm_opts, NULL, };
diff --git a/qemu-options.hx b/qemu-options.hx index 804a2d1..3687722 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2842,3 +2842,8 @@ HXCOMM This is the last statement. Insert new options before this line! STEXI @end table ETEXI + +DEF("dimm", HAS_ARG, QEMU_OPTION_dimm, + "-dimm id=dimmid,size=sz,node=nd,populated=on|off\n" + "specify memory dimm device with name dimmid, size sz on node nd", + QEMU_ARCH_ALL) diff --git a/sysemu.h b/sysemu.h index 65552ac..7baf9c9 100644 --- a/sysemu.h +++ b/sysemu.h @@ -139,6 +139,7 @@ extern QEMUClock *rtc_clock; extern int nb_numa_nodes; extern uint64_t node_mem[MAX_NODES]; extern unsigned long *node_cpumask[MAX_NODES]; +extern int nb_hp_dimms;
#define MAX_OPTION_ROMS 16 typedef struct QEMUOptionRom { diff --git a/vl.c b/vl.c index 7c577fa..af1745c 100644 --- a/vl.c +++ b/vl.c @@ -126,6 +126,7 @@ int main(int argc, char **argv) #include "hw/xen.h" #include "hw/qdev.h" #include "hw/loader.h" +#include "hw/dimm.h" #include "bt-host.h" #include "net.h" #include "net/slirp.h" @@ -248,6 +249,7 @@ QTAILQ_HEAD(, FWBootEntry) fw_boot_order = QTAILQ_HEAD_INITIALIZER(fw_boot_order int nb_numa_nodes; uint64_t node_mem[MAX_NODES]; unsigned long *node_cpumask[MAX_NODES]; +int nb_hp_dimms;
uint8_t qemu_uuid[16];
@@ -530,6 +532,37 @@ static void configure_rtc_date_offset(const char *startdate, int legacy) } }
+static void configure_dimm(QemuOpts *opts) +{ + const char *id; + uint64_t size, node; + bool populated; + QemuOpts *devopts; + char buf[256]; + if (nb_hp_dimms == MAX_DIMMS) { + fprintf(stderr, "qemu: maximum number of DIMMs (%d) exceeded\n", + MAX_DIMMS); + exit(1); + } + id = qemu_opts_id(opts); + size = qemu_opt_get_size(opts, "size", DEFAULT_DIMMSIZE); + populated = qemu_opt_get_bool(opts, "populated", 0); + node = qemu_opt_get_number(opts, "node", 0); + + dimm_config_create((char*)id, size, node, nb_hp_dimms, 0); + + if (populated) { + devopts = qemu_opts_create(qemu_find_opts("device"), id, 0, NULL); + qemu_opt_set(devopts, "driver", "dimm"); + snprintf(buf, sizeof(buf), "%lu", size); + qemu_opt_set(devopts, "size", buf); + snprintf(buf, sizeof(buf), "%lu", node); + qemu_opt_set(devopts, "node", buf); + qemu_opt_set(devopts, "bus", "membus"); + } + nb_hp_dimms++; +} + static void configure_rtc(QemuOpts *opts) { const char *value; @@ -2354,6 +2387,8 @@ int main(int argc, char **argv, char **envp) DisplayChangeListener *dcl; int cyls, heads, secs, translation; QemuOpts *hda_opts = NULL, *opts, *machine_opts; + QemuOpts *dimm_opts[MAX_DIMMS]; + int nb_dimm_opts = 0; QemuOptsList *olist; int optind; const char *optarg; @@ -3288,6 +3323,18 @@ int main(int argc, char **argv, char **envp) exit(0); } break; + case QEMU_OPTION_dimm: + if (nb_dimm_opts == MAX_DIMMS) { + fprintf(stderr, "qemu: maximum number of DIMMs (%d) exceeded\n", + MAX_DIMMS); + } + dimm_opts[nb_dimm_opts] = + qemu_opts_parse(qemu_find_opts("dimm"), optarg, 0); + if (!dimm_opts[nb_dimm_opts]) { + exit(1); + } + nb_dimm_opts++; + break; default: os_parse_cmd_args(popt->index, optarg); } @@ -3611,6 +3658,9 @@ int main(int argc, char **argv, char **envp) } qemu_add_globals();
+ for (i = 0; i < nb_dimm_opts; i++) + configure_dimm(dimm_opts[i]); + qdev_machine_init();
machine->init(ram_size, boot_devices,
-
Vasilis Liaskovitis