[PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Alejandro Hernandez]

The SMP kernel config presents issues on qemuarm because:

CONFIG_SMP=y
Dependencies Missing:
  - CPU_V6K or CPU_V7:
    These are selected by setting:
    CONFIG_ARCH_MULTI_V7=y
    or
    CONFIG_ARCH_MULTI_V6=y

But our QEMU + ARM BSPs are based on armv4/v5 hence they are
incompatible with CONFIG_SMP.

This patch fixes the script, and avoids offering SMP to the user
when the created BSP is based on QEMU + ARM.

[YOCTO #11426]

Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
---
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend       | 1 +
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend  | 1 +
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend | 1 +
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend  | 1 +
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend  | 1 +
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend       | 1 +
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend      | 1 +
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend       | 1 +
 .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend       | 1 +
 9 files changed, 9 insertions(+)

diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
index 7e3ce5ba12d..11105ebcc26 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
index 81392ce38ac..ad77a662682 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
index 29ad17b2009..9b5f8016841 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
index a73b1aa132f..2fc992992cf 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
index 7d40671fd43..868d12af04b 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
index a9fd9ecff5a..13450f47438 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
index 5873da4245c..e1af4976fc4 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
index cdee7737983..a2511ba197c 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
index 24c28803ee7..fdf66bb4429 100644
--- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
+++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
@@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
 {{ if need_new_kbranch == "n": }}
 KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
 
+{{ if qemuarch != "arm": }}
 {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
 {{ if smp == "y": }}
 KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
-- 
2.12.0

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Leonardo Sandoval]

Alex,

is this change only applies to qemu arm? I wonder if the native arm arch
needs a similar series.

Leo

On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
> The SMP kernel config presents issues on qemuarm because:
> 
> CONFIG_SMP=y
> Dependencies Missing:
>   - CPU_V6K or CPU_V7:
>     These are selected by setting:
>     CONFIG_ARCH_MULTI_V7=y
>     or
>     CONFIG_ARCH_MULTI_V6=y
> 
> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
> incompatible with CONFIG_SMP.
> 
> This patch fixes the script, and avoids offering SMP to the user
> when the created BSP is based on QEMU + ARM.
> 



> [YOCTO #11426]
> 
> Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
> ---
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend       | 1 +
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend  | 1 +
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend | 1 +
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend  | 1 +
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend  | 1 +
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend       | 1 +
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend      | 1 +
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend       | 1 +
>  .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend       | 1 +
>  9 files changed, 9 insertions(+)
> 
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
> index 7e3ce5ba12d..11105ebcc26 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
> index 81392ce38ac..ad77a662682 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
> index 29ad17b2009..9b5f8016841 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
> index a73b1aa132f..2fc992992cf 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
> index 7d40671fd43..868d12af04b 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
> index a9fd9ecff5a..13450f47438 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
> index 5873da4245c..e1af4976fc4 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
> index cdee7737983..a2511ba197c 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
> index 24c28803ee7..fdf66bb4429 100644
> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>  {{ if need_new_kbranch == "n": }}
>  KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>  
> +{{ if qemuarch != "arm": }}
>  {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>  {{ if smp == "y": }}
>  KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> -- 
> 2.12.0
> 

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Alejandro Hernandez]

Hey Leo,

Nope, this change only applies to qemuARM, the other ARM based BSPs are 
based on > ARMv6

Alejandro

On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
> Alex,
>
> is this change only applies to qemu arm? I wonder if the native arm arch
> needs a similar series.
>
> Leo
>
> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
>> The SMP kernel config presents issues on qemuarm because:
>>
>> CONFIG_SMP=y
>> Dependencies Missing:
>>    - CPU_V6K or CPU_V7:
>>      These are selected by setting:
>>      CONFIG_ARCH_MULTI_V7=y
>>      or
>>      CONFIG_ARCH_MULTI_V6=y
>>
>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
>> incompatible with CONFIG_SMP.
>>
>> This patch fixes the script, and avoids offering SMP to the user
>> when the created BSP is based on QEMU + ARM.
>>
>
>
>> [YOCTO #11426]
>>
>> Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
>> ---
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend       | 1 +
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend  | 1 +
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend | 1 +
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend  | 1 +
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend  | 1 +
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend       | 1 +
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend      | 1 +
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend       | 1 +
>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend       | 1 +
>>   9 files changed, 9 insertions(+)
>>
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>> index 7e3ce5ba12d..11105ebcc26 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>> index 81392ce38ac..ad77a662682 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>> index 29ad17b2009..9b5f8016841 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>> index a73b1aa132f..2fc992992cf 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>> index 7d40671fd43..868d12af04b 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>> index a9fd9ecff5a..13450f47438 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>> index 5873da4245c..e1af4976fc4 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>> index cdee7737983..a2511ba197c 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> diff --git a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>> index 24c28803ee7..fdf66bb4429 100644
>> --- a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>> +++ b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>   {{ if need_new_kbranch == "n": }}
>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>   
>> +{{ if qemuarch != "arm": }}
>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP support? (y/n)" default:"y"}}
>>   {{ if smp == "y": }}
>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>> -- 
>> 2.12.0
>>
>

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Andre McCurdy]

On Tue, May 30, 2017 at 1:12 PM, Alejandro Hernandez
<alejandro.hernandez@linux.intel.com> wrote:
> Hey Leo,
>
> Nope, this change only applies to qemuARM, the other ARM based BSPs are
> based on > ARMv6
>
> Alejandro
>
>
> On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
>>
>> Alex,
>>
>> is this change only applies to qemu arm? I wonder if the native arm arch
>> needs a similar series.
>>
>> Leo
>>
>> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
>>>
>>> The SMP kernel config presents issues on qemuarm because:
>>>
>>> CONFIG_SMP=y
>>> Dependencies Missing:
>>>    - CPU_V6K or CPU_V7:
>>>      These are selected by setting:
>>>      CONFIG_ARCH_MULTI_V7=y
>>>      or
>>>      CONFIG_ARCH_MULTI_V6=y
>>>
>>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
>>> incompatible with CONFIG_SMP.

Maybe time to think (again) about updating OE's qemu ARM builds to ARMv7.

>>> This patch fixes the script, and avoids offering SMP to the user
>>> when the created BSP is based on QEMU + ARM.
>>>
>>
>>
>>> [YOCTO #11426]
>>>
>>> Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
>>> ---
>>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>> | 1 +
>>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>> | 1 +
>>>
>>> .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend | 1
>>> +
>>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>> | 1 +
>>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>> | 1 +
>>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>> | 1 +
>>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>> | 1 +
>>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>> | 1 +
>>>   .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>> | 1 +
>>>   9 files changed, 9 insertions(+)
>>>
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>> index 7e3ce5ba12d..11105ebcc26 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>> index 81392ce38ac..ad77a662682 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>> index 29ad17b2009..9b5f8016841 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>> index a73b1aa132f..2fc992992cf 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>> index 7d40671fd43..868d12af04b 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>> index a9fd9ecff5a..13450f47438 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>> index 5873da4245c..e1af4976fc4 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>> index cdee7737983..a2511ba197c 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> diff --git
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>> index 24c28803ee7..fdf66bb4429 100644
>>> ---
>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>> +++
>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>   {{ if need_new_kbranch == "n": }}
>>>   KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>   +{{ if qemuarch != "arm": }}
>>>   {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>> support? (y/n)" default:"y"}}
>>>   {{ if smp == "y": }}
>>>   KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>> --
>>> 2.12.0
>>>
>>
>
> --
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Alejandro Hernandez]

Hey Andy,


On 05/30/2017 05:32 PM, Andre McCurdy wrote:
> On Tue, May 30, 2017 at 1:12 PM, Alejandro Hernandez
> <alejandro.hernandez@linux.intel.com> wrote:
>> Hey Leo,
>>
>> Nope, this change only applies to qemuARM, the other ARM based BSPs are
>> based on > ARMv6
>>
>> Alejandro
>>
>>
>> On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
>>> Alex,
>>>
>>> is this change only applies to qemu arm? I wonder if the native arm arch
>>> needs a similar series.
>>>
>>> Leo
>>>
>>> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
>>>> The SMP kernel config presents issues on qemuarm because:
>>>>
>>>> CONFIG_SMP=y
>>>> Dependencies Missing:
>>>>     - CPU_V6K or CPU_V7:
>>>>       These are selected by setting:
>>>>       CONFIG_ARCH_MULTI_V7=y
>>>>       or
>>>>       CONFIG_ARCH_MULTI_V6=y
>>>>
>>>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
>>>> incompatible with CONFIG_SMP.
> Maybe time to think (again) about updating OE's qemu ARM builds to ARMv7.
I believe qemu has deep issues with newer ARMs, and thats why it's been 
kept like that.
>
>>>> This patch fixes the script, and avoids offering SMP to the user
>>>> when the created BSP is based on QEMU + ARM.
>>>>
>>>
>>>> [YOCTO #11426]
>>>>
>>>> Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
>>>> ---
>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>> | 1 +
>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>> | 1 +
>>>>
>>>> .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend | 1
>>>> +
>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>> | 1 +
>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>> | 1 +
>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>> | 1 +
>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>> | 1 +
>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>> | 1 +
>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>> | 1 +
>>>>    9 files changed, 9 insertions(+)
>>>>
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>> index 7e3ce5ba12d..11105ebcc26 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>> index 81392ce38ac..ad77a662682 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>> index 29ad17b2009..9b5f8016841 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>> index a73b1aa132f..2fc992992cf 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>> index 7d40671fd43..868d12af04b 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>> index a9fd9ecff5a..13450f47438 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>> index 5873da4245c..e1af4976fc4 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>> index cdee7737983..a2511ba197c 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> diff --git
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>> index 24c28803ee7..fdf66bb4429 100644
>>>> ---
>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>> +++
>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>    {{ if need_new_kbranch == "n": }}
>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>    +{{ if qemuarch != "arm": }}
>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>> support? (y/n)" default:"y"}}
>>>>    {{ if smp == "y": }}
>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>> --
>>>> 2.12.0
>>>>
>> --
>> _______________________________________________
>> yocto mailing list
>> yocto@yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/yocto

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Andre McCurdy]

On Tue, May 30, 2017 at 3:52 PM, Alejandro Hernandez
<alejandro.hernandez@linux.intel.com> wrote:
> Hey Andy,
> On 05/30/2017 05:32 PM, Andre McCurdy wrote:
>> On Tue, May 30, 2017 at 1:12 PM, Alejandro Hernandez
>> <alejandro.hernandez@linux.intel.com> wrote:
>>>
>>> Hey Leo,
>>>
>>> Nope, this change only applies to qemuARM, the other ARM based BSPs are
>>> based on > ARMv6
>>>
>>> Alejandro
>>>
>>> On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
>>>>
>>>> Alex,
>>>>
>>>> is this change only applies to qemu arm? I wonder if the native arm arch
>>>> needs a similar series.
>>>>
>>>> Leo
>>>>
>>>> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
>>>>>
>>>>> The SMP kernel config presents issues on qemuarm because:
>>>>>
>>>>> CONFIG_SMP=y
>>>>> Dependencies Missing:
>>>>>     - CPU_V6K or CPU_V7:
>>>>>       These are selected by setting:
>>>>>       CONFIG_ARCH_MULTI_V7=y
>>>>>       or
>>>>>       CONFIG_ARCH_MULTI_V6=y
>>>>>
>>>>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
>>>>> incompatible with CONFIG_SMP.
>>
>> Maybe time to think (again) about updating OE's qemu ARM builds to ARMv7.
>
> I believe qemu has deep issues with newer ARMs, and thats why it's been kept
> like that.

I think the stated reason is that since almost no real world
ARMv4/ARMv5 based projects track new releases of OE, the ARM qemu
targets are held back to ensure that ARMv4/ARMv5 continue to get some
test coverage (the fear being that if these targets don't get tested
via the OE qemuarm builds they won't get tested at all).

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Bruce Ashfield]

[-- Attachment #1: Type: text/plain, Size: 12197 bytes --]

On Tue, May 30, 2017 at 6:52 PM, Alejandro Hernandez <
alejandro.hernandez@linux.intel.com> wrote:

> Hey Andy,
>
>
> On 05/30/2017 05:32 PM, Andre McCurdy wrote:
>
>> On Tue, May 30, 2017 at 1:12 PM, Alejandro Hernandez
>> <alejandro.hernandez@linux.intel.com> wrote:
>>
>>> Hey Leo,
>>>
>>> Nope, this change only applies to qemuARM, the other ARM based BSPs are
>>> based on > ARMv6
>>>
>>> Alejandro
>>>
>>>
>>> On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
>>>
>>>> Alex,
>>>>
>>>> is this change only applies to qemu arm? I wonder if the native arm arch
>>>> needs a similar series.
>>>>
>>>> Leo
>>>>
>>>> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
>>>>
>>>>> The SMP kernel config presents issues on qemuarm because:
>>>>>
>>>>> CONFIG_SMP=y
>>>>> Dependencies Missing:
>>>>>     - CPU_V6K or CPU_V7:
>>>>>       These are selected by setting:
>>>>>       CONFIG_ARCH_MULTI_V7=y
>>>>>       or
>>>>>       CONFIG_ARCH_MULTI_V6=y
>>>>>
>>>>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
>>>>> incompatible with CONFIG_SMP.
>>>>>
>>>> Maybe time to think (again) about updating OE's qemu ARM builds to
>> ARMv7.
>>
> I believe qemu has deep issues with newer ARMs, and thats why it's been
> kept like that.


Qemu itself should be fine with the newer ARMs .. but we've just targeted a
lowest common
denominator (and simple) ARM arch for this target. Since the primary goal
isn't testing the ISA or arch
specifics via qemuarm/qemuarm64 (rather, sanity, base arch support, etc).

That being said, as long as a newer platform/board was chosen that had full
disk support
(something that the qemuarma9 lacks), then it is feasible to do an update
to something
newer. Alternatively, we could keep the platform the same and update the
CPU definition .. but
there's not a huge value in that.

But if we did bring in something newer, we'd have to drop the existing
qemuarm and document that
we aren't doing any coverage on the older ARM arches.

Bruce


>
>
>> This patch fixes the script, and avoids offering SMP to the user
>>>>> when the created BSP is based on QEMU + ARM.
>>>>>
>>>>>
>>>> [YOCTO #11426]
>>>>>
>>>>> Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.int
>>>>> el.com>
>>>>> ---
>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>>> | 1 +
>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_
>>>>> 4.1.bbappend
>>>>> | 1 +
>>>>>
>>>>> .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>>> | 1
>>>>> +
>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_
>>>>> 4.4.bbappend
>>>>> | 1 +
>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_
>>>>> 4.8.bbappend
>>>>> | 1 +
>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>>> | 1 +
>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>>> | 1 +
>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>>> | 1 +
>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>>> | 1 +
>>>>>    9 files changed, 9 insertions(+)
>>>>>
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-dev.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-dev.bbappend
>>>>> index 7e3ce5ba12d..11105ebcc26 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-dev.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-dev.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.1.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.1.bbappend
>>>>> index 81392ce38ac..ad77a662682 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.1.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.1.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.10.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.10.bbappend
>>>>> index 29ad17b2009..9b5f8016841 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.10.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.10.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.4.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.4.bbappend
>>>>> index a73b1aa132f..2fc992992cf 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.4.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.4.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.8.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.8.bbappend
>>>>> index 7d40671fd43..868d12af04b 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.8.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto-tiny_4.8.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.1.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.1.bbappend
>>>>> index a9fd9ecff5a..13450f47438 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.1.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.1.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.10.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.10.bbappend
>>>>> index 5873da4245c..e1af4976fc4 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.10.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.10.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.4.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.4.bbappend
>>>>> index cdee7737983..a2511ba197c 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.4.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.4.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> diff --git
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.8.bbappend
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.8.bbappend
>>>>> index 24c28803ee7..fdf66bb4429 100644
>>>>> ---
>>>>> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.8.bbappend
>>>>> +++
>>>>> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/
>>>>> linux/linux-yocto_4.8.bbappend
>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>    +{{ if qemuarch != "arm": }}
>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like SMP
>>>>> support? (y/n)" default:"y"}}
>>>>>    {{ if smp == "y": }}
>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>> --
>>>>> 2.12.0
>>>>>
>>>>> --
>>> _______________________________________________
>>> yocto mailing list
>>> yocto@yoctoproject.org
>>> https://lists.yoctoproject.org/listinfo/yocto
>>>
>>
> --
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>



-- 
"Thou shalt not follow the NULL pointer, for chaos and madness await thee
at its end"

[-- Attachment #2: Type: text/html, Size: 15594 bytes --]

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Andre McCurdy]

On Tue, May 30, 2017 at 6:15 PM, Bruce Ashfield
<bruce.ashfield@gmail.com> wrote:
> On Tue, May 30, 2017 at 6:52 PM, Alejandro Hernandez
> <alejandro.hernandez@linux.intel.com> wrote:
>> On 05/30/2017 05:32 PM, Andre McCurdy wrote:
>>> On Tue, May 30, 2017 at 1:12 PM, Alejandro Hernandez
>>> <alejandro.hernandez@linux.intel.com> wrote:
>>>>
>>>> Hey Leo,
>>>>
>>>> Nope, this change only applies to qemuARM, the other ARM based BSPs are
>>>> based on > ARMv6
>>>>
>>>> Alejandro
>>>>
>>>>
>>>> On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
>>>>>
>>>>> Alex,
>>>>>
>>>>> is this change only applies to qemu arm? I wonder if the native arm
>>>>> arch
>>>>> needs a similar series.
>>>>>
>>>>> Leo
>>>>>
>>>>> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
>>>>>>
>>>>>> The SMP kernel config presents issues on qemuarm because:
>>>>>>
>>>>>> CONFIG_SMP=y
>>>>>> Dependencies Missing:
>>>>>>     - CPU_V6K or CPU_V7:
>>>>>>       These are selected by setting:
>>>>>>       CONFIG_ARCH_MULTI_V7=y
>>>>>>       or
>>>>>>       CONFIG_ARCH_MULTI_V6=y
>>>>>>
>>>>>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
>>>>>> incompatible with CONFIG_SMP.
>>>
>>> Maybe time to think (again) about updating OE's qemu ARM builds to ARMv7.
>>
>> I believe qemu has deep issues with newer ARMs, and thats why it's been
>> kept like that.
>
> Qemu itself should be fine with the newer ARMs .. but we've just targeted a
> lowest common
> denominator (and simple) ARM arch for this target. Since the primary goal
> isn't testing the ISA or arch
> specifics via qemuarm/qemuarm64 (rather, sanity, base arch support, etc).
>
> That being said, as long as a newer platform/board was chosen that had full
> disk support
> (something that the qemuarma9 lacks), then it is feasible to do an update to
> something
> newer. Alternatively, we could keep the platform the same and update the CPU
> definition .. but
> there's not a huge value in that.

Keeping the existing platform but updating the CPU would have the
advantage that qemuarm could then share binaries and sstate with real
world ARM targets.

It would also be a step towards defining an official "generic ARMv7"
tuning target within OE, which could be used as the default
DEFAULTTUNE for all ARMv7 targets.

> But if we did bring in something newer, we'd have to drop the existing
> qemuarm and document that
> we aren't doing any coverage on the older ARM arches.
>
> Bruce
>

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Khem Raj]

[-- Attachment #1: Type: text/plain, Size: 13168 bytes --]

On Tue, May 30, 2017 at 6:15 PM, Bruce Ashfield <bruce.ashfield@gmail.com>
wrote:
>
>
> On Tue, May 30, 2017 at 6:52 PM, Alejandro Hernandez
> <alejandro.hernandez@linux.intel.com> wrote:
>>
>> Hey Andy,
>>
>>
>> On 05/30/2017 05:32 PM, Andre McCurdy wrote:
>>>
>>> On Tue, May 30, 2017 at 1:12 PM, Alejandro Hernandez
>>> <alejandro.hernandez@linux.intel.com> wrote:
>>>>
>>>> Hey Leo,
>>>>
>>>> Nope, this change only applies to qemuARM, the other ARM based BSPs are
>>>> based on > ARMv6
>>>>
>>>> Alejandro
>>>>
>>>>
>>>> On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
>>>>>
>>>>> Alex,
>>>>>
>>>>> is this change only applies to qemu arm? I wonder if the native arm
>>>>> arch
>>>>> needs a similar series.
>>>>>
>>>>> Leo
>>>>>
>>>>> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
>>>>>>
>>>>>> The SMP kernel config presents issues on qemuarm because:
>>>>>>
>>>>>> CONFIG_SMP=y
>>>>>> Dependencies Missing:
>>>>>>     - CPU_V6K or CPU_V7:
>>>>>>       These are selected by setting:
>>>>>>       CONFIG_ARCH_MULTI_V7=y
>>>>>>       or
>>>>>>       CONFIG_ARCH_MULTI_V6=y
>>>>>>
>>>>>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
>>>>>> incompatible with CONFIG_SMP.
>>>
>>> Maybe time to think (again) about updating OE's qemu ARM builds to
ARMv7.
>>
>> I believe qemu has deep issues with newer ARMs, and thats why it's been
>> kept like that.
>
>
> Qemu itself should be fine with the newer ARMs .. but we've just targeted
a
> lowest common
> denominator (and simple) ARM arch for this target. Since the primary goal
> isn't testing the ISA or arch
> specifics via qemuarm/qemuarm64 (rather, sanity, base arch support, etc).
>

I think it will be more effective if we tested most used configuration
instead, it would help a larger community. GCC 7 also dropped armv5 ( the t
variants are still supported )

I would think keep the name qemuarm but use armv7 based machine to emulate
would be an option I am sure meta Linaro has some work on this that can be
used in oe core


> That being said, as long as a newer platform/board was chosen that had
full
> disk support
> (something that the qemuarma9 lacks), then it is feasible to do an update
to
> something
> newer. Alternatively, we could keep the platform the same and update the
CPU
> definition .. but
> there's not a huge value in that.
>
> But if we did bring in something newer, we'd have to drop the existing
> qemuarm and document that
> we aren't doing any coverage on the older ARM arches.
>
> Bruce
>
>>
>>
>>>
>>>>>> This patch fixes the script, and avoids offering SMP to the user
>>>>>> when the created BSP is based on QEMU + ARM.
>>>>>>
>>>>>
>>>>>> [YOCTO #11426]
>>>>>>
>>>>>> Signed-off-by: Alejandro Hernandez
>>>>>> <alejandro.hernandez@linux.intel.com>
>>>>>> ---
>>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>>>> | 1 +
>>>>>>
>>>>>>
.../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>>>> | 1 +
>>>>>>
>>>>>>
>>>>>>
.../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend | 1
>>>>>> +
>>>>>>
>>>>>>
.../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>>>> | 1 +
>>>>>>
>>>>>>
.../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>>>> | 1 +
>>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>>>> | 1 +
>>>>>>
.../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>>>> | 1 +
>>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>>>> | 1 +
>>>>>>    .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>>>> | 1 +
>>>>>>    9 files changed, 9 insertions(+)
>>>>>>
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>>>> index 7e3ce5ba12d..11105ebcc26 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
>>>>>> SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>>>> index 81392ce38ac..ad77a662682 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>>>> index 29ad17b2009..9b5f8016841 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>>>> index a73b1aa132f..2fc992992cf 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>>>> index 7d40671fd43..868d12af04b 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you need SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>>>> index a9fd9ecff5a..13450f47438 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
>>>>>> SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>>>> index 5873da4245c..e1af4976fc4 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
>>>>>> SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>>>> index cdee7737983..a2511ba197c 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
>>>>>> SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> diff --git
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>>>> index 24c28803ee7..fdf66bb4429 100644
>>>>>> ---
>>>>>>
>>>>>>
a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>>>> +++
>>>>>>
>>>>>>
b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
>>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
>>>>>>    {{ if need_new_kbranch == "n": }}
>>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
>>>>>>    +{{ if qemuarch != "arm": }}
>>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
>>>>>> SMP
>>>>>> support? (y/n)" default:"y"}}
>>>>>>    {{ if smp == "y": }}
>>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
>>>>>> --
>>>>>> 2.12.0
>>>>>>
>>>> --
>>>> _______________________________________________
>>>> yocto mailing list
>>>> yocto@yoctoproject.org
>>>> https://lists.yoctoproject.org/listinfo/yocto
>>
>>
>> --
>> _______________________________________________
>> yocto mailing list
>> yocto@yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/yocto
>
>
>
>
> --
> "Thou shalt not follow the NULL pointer, for chaos and madness await thee
at
> its end"
>
> --
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>

[-- Attachment #2: Type: text/html, Size: 21272 bytes --]

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Alejandro Hernandez]

[-- Attachment #1: Type: text/plain, Size: 14570 bytes --]

On 05/31/2017 01:46 PM, Khem Raj wrote:
>
>
> On Tue, May 30, 2017 at 6:15 PM, Bruce Ashfield 
> <bruce.ashfield@gmail.com <mailto:bruce.ashfield@gmail.com>> wrote:
> >
> >
> > On Tue, May 30, 2017 at 6:52 PM, Alejandro Hernandez
> > <alejandro.hernandez@linux.intel.com 
> <mailto:alejandro.hernandez@linux.intel.com>> wrote:
> >>
> >> Hey Andy,
> >>
> >>
> >> On 05/30/2017 05:32 PM, Andre McCurdy wrote:
> >>>
> >>> On Tue, May 30, 2017 at 1:12 PM, Alejandro Hernandez
> >>> <alejandro.hernandez@linux.intel.com 
> <mailto:alejandro.hernandez@linux.intel.com>> wrote:
> >>>>
> >>>> Hey Leo,
> >>>>
> >>>> Nope, this change only applies to qemuARM, the other ARM based 
> BSPs are
> >>>> based on > ARMv6
> >>>>
> >>>> Alejandro
> >>>>
> >>>>
> >>>> On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
> >>>>>
> >>>>> Alex,
> >>>>>
> >>>>> is this change only applies to qemu arm? I wonder if the native arm
> >>>>> arch
> >>>>> needs a similar series.
> >>>>>
> >>>>> Leo
> >>>>>
> >>>>> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
> >>>>>>
> >>>>>> The SMP kernel config presents issues on qemuarm because:
> >>>>>>
> >>>>>> CONFIG_SMP=y
> >>>>>> Dependencies Missing:
> >>>>>>     - CPU_V6K or CPU_V7:
> >>>>>>       These are selected by setting:
> >>>>>>       CONFIG_ARCH_MULTI_V7=y
> >>>>>>       or
> >>>>>>       CONFIG_ARCH_MULTI_V6=y
> >>>>>>
> >>>>>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
> >>>>>> incompatible with CONFIG_SMP.
> >>>
> >>> Maybe time to think (again) about updating OE's qemu ARM builds to 
> ARMv7.
> >>
> >> I believe qemu has deep issues with newer ARMs, and thats why it's been
> >> kept like that.
> >
> >
> > Qemu itself should be fine with the newer ARMs .. but we've just 
> targeted a
> > lowest common
> > denominator (and simple) ARM arch for this target. Since the primary 
> goal
> > isn't testing the ISA or arch
> > specifics via qemuarm/qemuarm64 (rather, sanity, base arch support, 
> etc).
> >
>
> I think it will be more effective if we tested most used configuration 
> instead, it would help a larger community. GCC 7 also dropped armv5 ( 
> the t variants are still supported )
>
> I would think keep the name qemuarm but use armv7 based machine to 
> emulate would be an option I am sure meta Linaro has some work on this 
> that can be used in oe core
>
>
I would also assume they've got some work on this, it'd be nice to 
contact them and see if this can be done, although I asked on IRC 
several times to see what people thoughts were on if we should upgrade 
and I practically got no feedback.

> > That being said, as long as a newer platform/board was chosen that 
> had full
> > disk support
> > (something that the qemuarma9 lacks), then it is feasible to do an 
> update to
> > something
> > newer. Alternatively, we could keep the platform the same and update 
> the CPU
> > definition .. but
> > there's not a huge value in that.
> >
> > But if we did bring in something newer, we'd have to drop the existing
> > qemuarm and document that
> > we aren't doing any coverage on the older ARM arches.
> >
> > Bruce
> >
> >>
> >>
> >>>
> >>>>>> This patch fixes the script, and avoids offering SMP to the user
> >>>>>> when the created BSP is based on QEMU + ARM.
> >>>>>>
> >>>>>
> >>>>>> [YOCTO #11426]
> >>>>>>
> >>>>>> Signed-off-by: Alejandro Hernandez
> >>>>>> <alejandro.hernandez@linux.intel.com 
> <mailto:alejandro.hernandez@linux.intel.com>>
> >>>>>> ---
> >>>>>> .../target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
> >>>>>> | 1 +
> >>>>>>
> >>>>>> 
> .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
> >>>>>> | 1 +
> >>>>>>
> >>>>>>
> >>>>>> 
> .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend 
> | 1
> >>>>>> +
> >>>>>>
> >>>>>> 
> .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
> >>>>>> | 1 +
> >>>>>>
> >>>>>> 
> .../target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
> >>>>>> | 1 +
> >>>>>> .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
> >>>>>> | 1 +
> >>>>>> .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
> >>>>>> | 1 +
> >>>>>> .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
> >>>>>> | 1 +
> >>>>>> .../target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
> >>>>>> | 1 +
> >>>>>>    9 files changed, 9 insertions(+)
> >>>>>>
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
> >>>>>> index 7e3ce5ba12d..11105ebcc26 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-dev.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
> >>>>>> SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
> >>>>>> index 81392ce38ac..ad77a662682 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.1.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you 
> need SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
> >>>>>> index 29ad17b2009..9b5f8016841 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.10.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you 
> need SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
> >>>>>> index a73b1aa132f..2fc992992cf 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.4.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you 
> need SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
> >>>>>> index 7d40671fd43..868d12af04b 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto-tiny_4.8.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Do you 
> need SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
> >>>>>> index a9fd9ecff5a..13450f47438 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.1.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
> >>>>>> SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
> >>>>>> index 5873da4245c..e1af4976fc4 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.10.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
> >>>>>> SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
> >>>>>> index cdee7737983..a2511ba197c 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.4.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
> >>>>>> SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> diff --git
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
> >>>>>> index 24c28803ee7..fdf66bb4429 100644
> >>>>>> ---
> >>>>>>
> >>>>>> 
> a/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
> >>>>>> +++
> >>>>>>
> >>>>>> 
> b/scripts/lib/bsp/substrate/target/arch/qemu/recipes-kernel/linux/linux-yocto_4.8.bbappend
> >>>>>> @@ -45,6 +45,7 @@ COMPATIBLE_MACHINE_{{=machine}} = "{{=machine}}"
> >>>>>>    {{ if need_new_kbranch == "n": }}
> >>>>>>    KBRANCH_{{=machine}}  = "{{=existing_kbranch}}"
> >>>>>>    +{{ if qemuarch != "arm": }}
> >>>>>>    {{ input type:"boolean" name:"smp" prio:"30" msg:"Would you like
> >>>>>> SMP
> >>>>>> support? (y/n)" default:"y"}}
> >>>>>>    {{ if smp == "y": }}
> >>>>>>    KERNEL_FEATURES_append_{{=machine}} += " cfg/smp.scc"
> >>>>>> --
> >>>>>> 2.12.0
> >>>>>>
> >>>> --
> >>>> _______________________________________________
> >>>> yocto mailing list
> >>>> yocto@yoctoproject.org <mailto:yocto@yoctoproject.org>
> >>>> https://lists.yoctoproject.org/listinfo/yocto
> >>
> >>
> >> --
> >> _______________________________________________
> >> yocto mailing list
> >> yocto@yoctoproject.org <mailto:yocto@yoctoproject.org>
> >> https://lists.yoctoproject.org/listinfo/yocto
> >
> >
> >
> >
> > --
> > "Thou shalt not follow the NULL pointer, for chaos and madness await 
> thee at
> > its end"
> >
> > --
> > _______________________________________________
> > yocto mailing list
> > yocto@yoctoproject.org <mailto:yocto@yoctoproject.org>
> > https://lists.yoctoproject.org/listinfo/yocto
> >


[-- Attachment #2: Type: text/html, Size: 24778 bytes --]

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[Khem Raj]

On Wed, May 31, 2017 at 5:41 PM, Alejandro Hernandez
<alejandro.hernandez@linux.intel.com> wrote:
> On 05/31/2017 01:46 PM, Khem Raj wrote:
>
>
>
> On Tue, May 30, 2017 at 6:15 PM, Bruce Ashfield <bruce.ashfield@gmail.com>
> wrote:
>>
>>
>> On Tue, May 30, 2017 at 6:52 PM, Alejandro Hernandez
>> <alejandro.hernandez@linux.intel.com> wrote:
>>>
>>> Hey Andy,
>>>
>>>
>>> On 05/30/2017 05:32 PM, Andre McCurdy wrote:
>>>>
>>>> On Tue, May 30, 2017 at 1:12 PM, Alejandro Hernandez
>>>> <alejandro.hernandez@linux.intel.com> wrote:
>>>>>
>>>>> Hey Leo,
>>>>>
>>>>> Nope, this change only applies to qemuARM, the other ARM based BSPs are
>>>>> based on > ARMv6
>>>>>
>>>>> Alejandro
>>>>>
>>>>>
>>>>> On 05/30/2017 02:59 PM, Leonardo Sandoval wrote:
>>>>>>
>>>>>> Alex,
>>>>>>
>>>>>> is this change only applies to qemu arm? I wonder if the native arm
>>>>>> arch
>>>>>> needs a similar series.
>>>>>>
>>>>>> Leo
>>>>>>
>>>>>> On Tue, 2017-05-30 at 11:44 -0700, Alejandro Hernandez wrote:
>>>>>>>
>>>>>>> The SMP kernel config presents issues on qemuarm because:
>>>>>>>
>>>>>>> CONFIG_SMP=y
>>>>>>> Dependencies Missing:
>>>>>>>     - CPU_V6K or CPU_V7:
>>>>>>>       These are selected by setting:
>>>>>>>       CONFIG_ARCH_MULTI_V7=y
>>>>>>>       or
>>>>>>>       CONFIG_ARCH_MULTI_V6=y
>>>>>>>
>>>>>>> But our QEMU + ARM BSPs are based on armv4/v5 hence they are
>>>>>>> incompatible with CONFIG_SMP.
>>>>
>>>> Maybe time to think (again) about updating OE's qemu ARM builds to
>>>> ARMv7.
>>>
>>> I believe qemu has deep issues with newer ARMs, and thats why it's been
>>> kept like that.
>>
>>
>> Qemu itself should be fine with the newer ARMs .. but we've just targeted
>> a
>> lowest common
>> denominator (and simple) ARM arch for this target. Since the primary goal
>> isn't testing the ISA or arch
>> specifics via qemuarm/qemuarm64 (rather, sanity, base arch support, etc).
>>
>
> I think it will be more effective if we tested most used configuration
> instead, it would help a larger community. GCC 7 also dropped armv5 ( the t
> variants are still supported )
>
> I would think keep the name qemuarm but use armv7 based machine to emulate
> would be an option I am sure meta Linaro has some work on this that can be
> used in oe core
>
>
> I would also assume they've got some work on this, it'd be nice to contact
> them and see if this can be done, although I asked on IRC several times to
> see what people thoughts were on if we should upgrade and I practically got
> no feedback.

http://git.linaro.org/openembedded/meta-linaro.git/tree/meta-aarch64/conf/machine

http://git.linaro.org/openembedded/meta-linaro.git/tree/meta-linaro/conf/machine

looks at genericarm* conf files.

Re: [PATCH] yocto-bsp: Fix QEMUARM based bsps to not offer SMP support

[gmane]

On 2017-05-31 21:20, Andre McCurdy wrote:
> 
> Keeping the existing platform but updating the CPU would have the
> advantage that qemuarm could then share binaries and sstate with real
> world ARM targets.
> 
> It would also be a step towards defining an official "generic ARMv7"
> tuning target within OE, which could be used as the default
> DEFAULTTUNE for all ARMv7 targets.
> 

I would highly appreciate a "generic ARMv7" target!

What I usually use on various boards is:

*) DEFAULTTUNE = "armv7a-neon"
    include conf/machine/include/arm/arch-armv7a.inc
*) same rootfs binay for all boards
*) a kernel starting from a multi_v7_defconfig
*) a different device tree for each board
*) a different u-boot for each board

I even got such a kernel/rootfs to work with the qemu which comes with 
the Yocto project with some ancient Yocto version by hacking the qemu 
run script [1][2]. This uses the versatile expressa qemu target and uses 
a device tree. I did not try, but nowadays runqemu is in Python and 
something like this should be possible as well. Like this the same 
binaries could run on qemu and on various boards.

[1] 
https://github.com/RobertBerger/poky/blob/2015-03-20-dizzy%2B/scripts/runqemu
[2] 
https://github.com/RobertBerger/poky/blob/2015-03-20-dizzy%2B/scripts/runqemu-internal