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Re: [Qemu-devel] [PATCH v2] hw/machine: Remove the Zero check of nb_numa


From: Dou Liyang
Subject: Re: [Qemu-devel] [PATCH v2] hw/machine: Remove the Zero check of nb_numa_nodes for numa_complete_configuration()
Date: Tue, 10 Jul 2018 16:15:30 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2

Hi Igor,

At 07/10/2018 03:42 PM, Igor Mammedov wrote:
On Wed, 4 Jul 2018 21:22:39 +0800
Dou Liyang <address@hidden> 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,
but the numa_complete_configuration need add a new node if memory hotplug
is enabled (slots > 0) even nb_numa_nodes=0.

So, Remove the check for numa_complete_configuration() to fix this.

Fixes 7a3099fc9c5c("numa: postpone options post-processing till 
machine_run_board_init()")
Signed-off-by: Dou Liyang <address@hidden>
---
v1 --> v2:
   -Fix it to pass the "make check".
---
  hw/core/machine.c | 5 ++---
  1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/core/machine.c b/hw/core/machine.c
index 2077328bcc..32b3c5a7d3 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -791,10 +791,9 @@ void machine_run_board_init(MachineState *machine)
  {
      MachineClass *machine_class = MACHINE_GET_CLASS(machine);
- if (nb_numa_nodes) {
-        numa_complete_configuration(machine);
+    numa_complete_configuration(machine);
+    if (nb_numa_nodes)
          machine_numa_finish_cpu_init(machine);
-    }
missing curly brackets, should look like:
        if (nb_numa_nodes) {
            machine_numa_finish_cpu_init(machine);
        }

with that fixed
Reviewed-by: Igor Mammedov <address@hidden>


Thank you, Igor.

Due to Eduardo has sent the pull request of this patch,
Can I fix this and send v2 patch now?

Thanks,
        dou
/* 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.









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