Re: [PATCH v2 5/7] hw/arm/sbsa-ref: Restrict SBSA-ref board to 64-bit build

[Philippe Mathieu-Daudé]

On 1/31/21 1:31 PM, Philippe Mathieu-Daudé wrote:
> On 1/31/21 11:59 AM, Philippe Mathieu-Daudé wrote:
>> The SBSA-ref board only use CPUs available in the 64-bit build,
>> it is pointless to have it available in the 32-bit build.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
>> ---
>> Cc: Radoslaw Biernacki <rad@semihalf.com>
>> Cc: Leif Lindholm <leif@nuviainc.com>
>> ---
>>  hw/arm/meson.build | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/hw/arm/meson.build b/hw/arm/meson.build
>> index be39117b9b6..059ff7382f2 100644
>> --- a/hw/arm/meson.build
>> +++ b/hw/arm/meson.build
>> @@ -22,7 +22,7 @@
>>  arm_ss.add(when: 'CONFIG_TOSA', if_true: files('tosa.c'))
>>  arm_ss.add(when: 'CONFIG_Z2', if_true: files('z2.c'))
>>  arm_ss.add(when: 'CONFIG_REALVIEW', if_true: files('realview.c'))
>> -arm_ss.add(when: 'CONFIG_SBSA_REF', if_true: files('sbsa-ref.c'))
>> +arm_ss.add(when: ['CONFIG_SBSA_REF', 'TARGET_AARCH64'], if_true: 
>> files('sbsa-ref.c'))
> 
> Please disregard this patch, it shows that my other patch
> "meson: Introduce target-specific Kconfig" is incorrect:
> https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg07989.html
> Probably because per docs/devel/kconfig.rst "devices are usually
> ``default y`` if and only if they have at least one ``depends on``".

The problem is the XLNX_ZYNQMP_ARM was incorrectly selected,
enabling AARCH64, pulling in CONFIG_SBSA_REF on 32-bit.
https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg08014.html

With this change there is no problem (and this patch is not necessary):

 config XLNX_ZYNQMP_ARM
     bool
-    default y if TCG && ARM
+    default y if TCG && AARCH64

Regards,

Phil.