[Qemu-devel] [PATCH] hw/machine: Remove the Zero check of nb_numa_nodes

[Qemu-devel] [PATCH] hw/machine: Remove the Zero check of nb_numa_nodes

[Dou Liyang]

Commit 7a3099fc9c5c("numa: postpone options post-processing till machine_run_board_init()")
broke the commit 7b8be49d36fc("NUMA: Enable adding NUMA node implicitly").

The machine_run_board_init() doesn't do NUMA setup if nb_numa_nodes=0.

Due to the NUMA setup will also check the value of nb_numa_nodes, remove the
check from machine_run_board_init() to fix ths bug.

Fixes 7a3099fc9c5c("numa: postpone options post-processing till machine_run_board_init()")
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
---
 hw/core/machine.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/hw/core/machine.c b/hw/core/machine.c
index 2077328bcc..962346f90d 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -791,10 +791,8 @@ void machine_run_board_init(MachineState *machine)
 {
     MachineClass *machine_class = MACHINE_GET_CLASS(machine);
 
-    if (nb_numa_nodes) {
-        numa_complete_configuration(machine);
-        machine_numa_finish_cpu_init(machine);
-    }
+    numa_complete_configuration(machine);
+    machine_numa_finish_cpu_init(machine);
 
     /* If the machine supports the valid_cpu_types check and the user
      * specified a CPU with -cpu check here that the user CPU is supported.
-- 
2.14.3

Re: [Qemu-devel] [PATCH] hw/machine: Remove the Zero check of nb_numa_nodes

[Dou Liyang]

At 07/04/2018 07:52 PM, Dou Liyang wrote:
> Commit 7a3099fc9c5c("numa: postpone options post-processing till machine_run_board_init()")
> broke the commit 7b8be49d36fc("NUMA: Enable adding NUMA node implicitly").
> 
> The machine_run_board_init() doesn't do NUMA setup if nb_numa_nodes=0.
> 
> Due to the NUMA setup will also check the value of nb_numa_nodes, remove the
> check from machine_run_board_init() to fix ths bug.
> 
> Fixes 7a3099fc9c5c("numa: postpone options post-processing till machine_run_board_init()")
> Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
> ---
>   hw/core/machine.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)

Please ignore this patch, it breaks the "make check", will send v2.

Thanks,
	dou

> 
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index 2077328bcc..962346f90d 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -791,10 +791,8 @@ void machine_run_board_init(MachineState *machine)
>   {
>       MachineClass *machine_class = MACHINE_GET_CLASS(machine);
>   
> -    if (nb_numa_nodes) {
> -        numa_complete_configuration(machine);
> -        machine_numa_finish_cpu_init(machine);
> -    }
> +    numa_complete_configuration(machine);
> +    machine_numa_finish_cpu_init(machine);
>   
>       /* If the machine supports the valid_cpu_types check and the user
>        * specified a CPU with -cpu check here that the user CPU is supported.
>