[Qemu-devel] [PATCH v3 1/2] pc: add 2.11 machine type

[Qemu-devel] [PATCH v3 1/2] pc: add 2.11 machine type

[Lan Tianyu]

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
---
 hw/i386/pc_piix.c    | 14 +++++++++++---
 hw/i386/pc_q35.c     | 14 +++++++++++---
 include/hw/compat.h  |  3 +++
 include/hw/i386/pc.h |  3 +++
 4 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 11b4336..e99ec8c 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -436,11 +436,21 @@ static void pc_i440fx_machine_options(MachineClass *m)
     m->default_display = "std";
 }
 
-static void pc_i440fx_2_10_machine_options(MachineClass *m)
+static void pc_i440fx_2_11_machine_options(MachineClass *m)
 {
     pc_i440fx_machine_options(m);
     m->alias = "pc";
     m->is_default = 1;
+}
+
+DEFINE_I440FX_MACHINE(v2_11, "pc-i440fx-2.11", NULL,
+                      pc_i440fx_2_11_machine_options);
+
+static void pc_i440fx_2_10_machine_options(MachineClass *m)
+{
+    pc_i440fx_machine_options(m);
+    m->is_default = 0;
+    m->alias = NULL;
     m->numa_auto_assign_ram = numa_legacy_auto_assign_ram;
 }
 
@@ -450,8 +460,6 @@ DEFINE_I440FX_MACHINE(v2_10, "pc-i440fx-2.10", NULL,
 static void pc_i440fx_2_9_machine_options(MachineClass *m)
 {
     pc_i440fx_2_10_machine_options(m);
-    m->is_default = 0;
-    m->alias = NULL;
     SET_MACHINE_COMPAT(m, PC_COMPAT_2_9);
 }
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 169a214..b469d05 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -302,11 +302,20 @@ static void pc_q35_machine_options(MachineClass *m)
     m->max_cpus = 288;
 }
 
+static void pc_q35_2_11_machine_options(MachineClass *m)
+{
+     pc_q35_machine_options(m);
+     m->alias = "q35";
+}
+DEFINE_Q35_MACHINE(v2_11, "pc-q35-2.11", NULL,
+                   pc_q35_2_11_machine_options);
+
 static void pc_q35_2_10_machine_options(MachineClass *m)
 {
-    pc_q35_machine_options(m);
-    m->alias = "q35";
+    pc_q35_2_11_machine_options(m);
+    m->alias = NULL;
     m->numa_auto_assign_ram = numa_legacy_auto_assign_ram;
+    SET_MACHINE_COMPAT(m, PC_COMPAT_2_10);
 }
 
 DEFINE_Q35_MACHINE(v2_10, "pc-q35-2.10", NULL,
@@ -315,7 +324,6 @@ DEFINE_Q35_MACHINE(v2_10, "pc-q35-2.10", NULL,
 static void pc_q35_2_9_machine_options(MachineClass *m)
 {
     pc_q35_2_10_machine_options(m);
-    m->alias = NULL;
     SET_MACHINE_COMPAT(m, PC_COMPAT_2_9);
 }
 
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 08f3600..3e101f8 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -1,6 +1,9 @@
 #ifndef HW_COMPAT_H
 #define HW_COMPAT_H
 
+#define HW_COMPAT_2_10 \
+    /* empty */
+
 #define HW_COMPAT_2_9 \
     {\
         .driver   = "pci-bridge",\
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index d80859b..8226904 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -369,6 +369,9 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t);
 int e820_get_num_entries(void);
 bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 
+#define PC_COMPAT_2_10 \
+    HW_COMPAT_2_10 \
+
 #define PC_COMPAT_2_9 \
     HW_COMPAT_2_9 \
     {\
-- 
1.8.3.1

[Qemu-devel] [PATCH v3 2/2] x86: Increase max vcpu number to 8192

[Lan Tianyu]

For HPC usage case, it will create a huge VM with vcpus number as same as host
cpus and this requires more vcpus support in a single VM. This patch is to
increase max vcpu number from 288 to 8192 which is current default maximum cpu
number for Linux kernel.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
---
 hw/i386/pc_q35.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index b469d05..3468f5a 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -299,7 +299,7 @@ static void pc_q35_machine_options(MachineClass *m)
     m->default_display = "std";
     m->no_floppy = 1;
     m->has_dynamic_sysbus = true;
-    m->max_cpus = 288;
+    m->max_cpus = 8192;
 }
 
 static void pc_q35_2_11_machine_options(MachineClass *m)
@@ -314,6 +314,7 @@ static void pc_q35_2_10_machine_options(MachineClass *m)
 {
     pc_q35_2_11_machine_options(m);
     m->alias = NULL;
+    m->max_cpus = 288;
     m->numa_auto_assign_ram = numa_legacy_auto_assign_ram;
     SET_MACHINE_COMPAT(m, PC_COMPAT_2_10);
 }
-- 
1.8.3.1

Re: [Qemu-devel] [PATCH v3 1/2] pc: add 2.11 machine type

[Eduardo Habkost]

On Tue, Aug 15, 2017 at 08:06:18PM -0400, Lan Tianyu wrote:
> Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
> ---
>  hw/i386/pc_piix.c    | 14 +++++++++++---
>  hw/i386/pc_q35.c     | 14 +++++++++++---
>  include/hw/compat.h  |  3 +++
>  include/hw/i386/pc.h |  3 +++
>  4 files changed, 28 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index 11b4336..e99ec8c 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -436,11 +436,21 @@ static void pc_i440fx_machine_options(MachineClass *m)
>      m->default_display = "std";
>  }
>  
> -static void pc_i440fx_2_10_machine_options(MachineClass *m)
> +static void pc_i440fx_2_11_machine_options(MachineClass *m)
>  {
>      pc_i440fx_machine_options(m);
>      m->alias = "pc";
>      m->is_default = 1;
> +}
> +
> +DEFINE_I440FX_MACHINE(v2_11, "pc-i440fx-2.11", NULL,
> +                      pc_i440fx_2_11_machine_options);
> +
> +static void pc_i440fx_2_10_machine_options(MachineClass *m)
> +{
> +    pc_i440fx_machine_options(m);
> +    m->is_default = 0;
> +    m->alias = NULL;
>      m->numa_auto_assign_ram = numa_legacy_auto_assign_ram;

Interesting, this was supposed to be in
pc_i440fx_2_9_machine_options() (see commit 3bfe5716 "numa:
equally distribute memory on nodes"), but the merge commit
adb354dd ("Merge remote-tracking branch 'mst/tags/for_upstream'
into staging") moved it to the pc_i440fx_2_10_machine_options().

I will submit a fix for -rc4 ASAP.

-- 
Eduardo