diff mbox

[PULL,34/40] machine: add default_ram_size to machine class

Message ID 1433367941-119488-35-git-send-email-agraf@suse.de
State New
Headers show

Commit Message

Alexander Graf June 3, 2015, 9:45 p.m. UTC
From: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>

Machines types can have different requirement for default ram
size. Introduce a member in the machine class and set the current
default_ram_size to 128MB.

For QEMUMachine types override the value during the registration of
the machine and for MachineClass introduce the generic class init
setting the default_ram_size.

Add helpers [K,M,G,T,P,E]_BYTE for better readability and easy usage

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
 hw/core/machine.c     |  9 +++++++++
 include/hw/boards.h   |  1 +
 include/qemu-common.h |  6 ++++++
 vl.c                  | 30 ++++++++++++++++--------------
 4 files changed, 32 insertions(+), 14 deletions(-)

Comments

Laurent Desnogues June 5, 2015, 7:27 a.m. UTC | #1
Hello,

On Wed, Jun 3, 2015 at 11:45 PM, Alexander Graf <agraf@suse.de> wrote:
> From: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
>
> Machines types can have different requirement for default ram
> size. Introduce a member in the machine class and set the current
> default_ram_size to 128MB.
>
> For QEMUMachine types override the value during the registration of
> the machine and for MachineClass introduce the generic class init
> setting the default_ram_size.
>
> Add helpers [K,M,G,T,P,E]_BYTE for better readability and easy usage
>
> Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
> Reviewed-by: Thomas Huth <thuth@redhat.com>
> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
> Signed-off-by: Alexander Graf <agraf@suse.de>
> ---
>  hw/core/machine.c     |  9 +++++++++
>  include/hw/boards.h   |  1 +
>  include/qemu-common.h |  6 ++++++
>  vl.c                  | 30 ++++++++++++++++--------------
>  4 files changed, 32 insertions(+), 14 deletions(-)
>
[...]
> diff --git a/include/qemu-common.h b/include/qemu-common.h
> index 6b373ff..d52d09c 100644
> --- a/include/qemu-common.h
> +++ b/include/qemu-common.h
> @@ -186,6 +186,12 @@ int64_t strtosz(const char *nptr, char **end);
>  int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
>  int64_t strtosz_suffix_unit(const char *nptr, char **end,
>                              const char default_suffix, int64_t unit);
> +#define K_BYTE     (1ULL << 10)
> +#define M_BYTE     (1ULL << 20)
> +#define G_BYTE     (1ULL << 30)
> +#define T_BYTE     (1ULL << 40)
> +#define P_BYTE     (1ULL << 50)
> +#define E_BYTE     (1ULL << 60)
>
>  /* used to print char* safely */
>  #define STR_OR_NULL(str) ((str) ? (str) : "null")
> diff --git a/vl.c b/vl.c
> index 1d4c089..6c7e4e4 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -120,8 +120,6 @@ int main(int argc, char **argv)
>  #include "qom/object_interfaces.h"
>  #include "qapi-event.h"
>
> -#define DEFAULT_RAM_SIZE 128

This define is still used in qemu-options.hx.  We now get this out of "qemu -h":

-m[emory] [size=]megs[,slots=n,maxmem=size]
                configure guest RAM
                size: initial amount of guest memory (default:
DEFAULT_RAM_SIZEMiB)
                slots: number of hotplug slots (default: none)
                maxmem: maximum amount of guest memory (default: none)

Thanks,

Laurent
diff mbox

Patch

diff --git a/hw/core/machine.c b/hw/core/machine.c
index 25c45e6..ac4654e 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -294,6 +294,14 @@  static void machine_init_notify(Notifier *notifier, void *data)
     foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL);
 }
 
+static void machine_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+
+    /* Default 128 MB as guest ram size */
+    mc->default_ram_size = 128 * M_BYTE;
+}
+
 static void machine_initfn(Object *obj)
 {
     MachineState *ms = MACHINE(obj);
@@ -463,6 +471,7 @@  static const TypeInfo machine_info = {
     .parent = TYPE_OBJECT,
     .abstract = true,
     .class_size = sizeof(MachineClass),
+    .class_init    = machine_class_init,
     .instance_size = sizeof(MachineState),
     .instance_init = machine_initfn,
     .instance_finalize = machine_finalize,
diff --git a/include/hw/boards.h b/include/hw/boards.h
index ff79797..6379901 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -106,6 +106,7 @@  struct MachineClass {
     const char *default_display;
     GlobalProperty *compat_props;
     const char *hw_version;
+    ram_addr_t default_ram_size;
 
     HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
                                            DeviceState *dev);
diff --git a/include/qemu-common.h b/include/qemu-common.h
index 6b373ff..d52d09c 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -186,6 +186,12 @@  int64_t strtosz(const char *nptr, char **end);
 int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
 int64_t strtosz_suffix_unit(const char *nptr, char **end,
                             const char default_suffix, int64_t unit);
+#define K_BYTE     (1ULL << 10)
+#define M_BYTE     (1ULL << 20)
+#define G_BYTE     (1ULL << 30)
+#define T_BYTE     (1ULL << 40)
+#define P_BYTE     (1ULL << 50)
+#define E_BYTE     (1ULL << 60)
 
 /* used to print char* safely */
 #define STR_OR_NULL(str) ((str) ? (str) : "null")
diff --git a/vl.c b/vl.c
index 1d4c089..6c7e4e4 100644
--- a/vl.c
+++ b/vl.c
@@ -120,8 +120,6 @@  int main(int argc, char **argv)
 #include "qom/object_interfaces.h"
 #include "qapi-event.h"
 
-#define DEFAULT_RAM_SIZE 128
-
 #define MAX_VIRTIO_CONSOLES 1
 #define MAX_SCLP_CONSOLES 1
 
@@ -1310,7 +1308,11 @@  void hmp_usb_del(Monitor *mon, const QDict *qdict)
 
 MachineState *current_machine;
 
-static void machine_class_init(ObjectClass *oc, void *data)
+/*
+ * Transitional class registration/init used for converting from
+ * legacy QEMUMachine to MachineClass.
+ */
+static void qemu_machine_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
     QEMUMachine *qm = data;
@@ -1333,7 +1335,7 @@  int qemu_register_machine(QEMUMachine *m)
     TypeInfo ti = {
         .name       = name,
         .parent     = TYPE_MACHINE,
-        .class_init = machine_class_init,
+        .class_init = qemu_machine_class_init,
         .class_data = (void *)m,
     };
 
@@ -2647,13 +2649,13 @@  out:
     return 0;
 }
 
-static void set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size)
+static void set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
+                               MachineClass *mc)
 {
     uint64_t sz;
     const char *mem_str;
     const char *maxmem_str, *slots_str;
-    const ram_addr_t default_ram_size = (ram_addr_t)DEFAULT_RAM_SIZE *
-                                        1024 * 1024;
+    const ram_addr_t default_ram_size = mc->default_ram_size;
     QemuOpts *opts = qemu_find_opts_singleton("memory");
 
     sz = 0;
@@ -3769,7 +3771,13 @@  int main(int argc, char **argv, char **envp)
         machine_class = machine_parse(optarg);
     }
 
-    set_memory_options(&ram_slots, &maxram_size);
+    if (machine_class == NULL) {
+        fprintf(stderr, "No machine specified, and there is no default.\n"
+                "Use -machine help to list supported machines!\n");
+        exit(1);
+    }
+
+    set_memory_options(&ram_slots, &maxram_size, machine_class);
 
     loc_set_none();
 
@@ -3798,12 +3806,6 @@  int main(int argc, char **argv, char **envp)
     }
 #endif
 
-    if (machine_class == NULL) {
-        fprintf(stderr, "No machine specified, and there is no default.\n"
-                "Use -machine help to list supported machines!\n");
-        exit(1);
-    }
-
     current_machine = MACHINE(object_new(object_class_get_name(
                           OBJECT_CLASS(machine_class))));
     if (machine_help_func(qemu_get_machine_opts(), current_machine)) {