powerpc/fadump: skip parameter area allocation when fadump is disabled

[Sourabh Jain]

On 07/10/25 15:58, Hari Bathini wrote:
>
>
> On 07/10/25 1:10 pm, Sourabh Jain wrote:
>> Fadump allocates memory to pass additional kernel command-line argument
>> to the fadump kernel. However, this allocation is not needed when fadump
>> is disabled. So avoid allocating memory for the additional parameter
>> area in such cases.
>>
>
> This needs the fixes tag...
>
> Fixes: f4892c68ecc1 ("powerpc/fadump: allocate memory for additional 
> parameters early")
>
> Otherwise, looks good to me.
>
> Reviewed-by: Hari Bathini <hbathini at linux.ibm.com>

Thanks for the review, Hari. I have sent v2 with the fixes tag.
https://lore.kernel.org/all/20251008032934.262683-1-sourabhjain@linux.ibm.com/

>
>> Cc: Hari Bathini <hbathini at linux.ibm.com>
>> Cc: Madhavan Srinivasan <maddy at linux.ibm.com>
>> Cc: Michael Ellerman <mpe at ellerman.id.au>
>> Signed-off-by: Sourabh Jain <sourabhjain at linux.ibm.com>
>> ---
>>   arch/powerpc/kernel/fadump.c | 3 +++
>>   1 file changed, 3 insertions(+)
>>
>> diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
>> index 5782e743fd27..4ebc333dd786 100644
>> --- a/arch/powerpc/kernel/fadump.c
>> +++ b/arch/powerpc/kernel/fadump.c
>> @@ -1747,6 +1747,9 @@ void __init fadump_setup_param_area(void)
>>   {
>>       phys_addr_t range_start, range_end;
>>   +    if (!fw_dump.fadump_enabled)
>> +        return;
>> +
>>       if (!fw_dump.param_area_supported || fw_dump.dump_active)
>>           return;
>
>