[PATCH v3 1/2] powerpc/fadump: allocate memory for additional parameters early

[Sourabh Jain]

Hello Christophe,

On 17/01/25 17:43, Christophe Leroy wrote:
>
>
> Le 13/11/2024 à 08:06, Sourabh Jain a écrit :
>> From: Hari Bathini <hbathini at linux.ibm.com>
>>
>> Memory for passing additional parameters to fadump capture kernel
>> is allocated during subsys_initcall level, using memblock. But
>> as slab is already available by this time, allocation happens via
>> the buddy allocator. This may work for radix MMU but is likely to
>> fail in most cases for hash MMU as hash MMU needs this memory in
>> the first memory block for it to be accessible in real mode in the
>> capture kernel (second boot). So, allocate memory for additional
>> parameters area as soon as MMU mode is obvious.
>>
>> Fixes: 683eab94da75 ("powerpc/fadump: setup additional parameters for 
>> dump capture kernel")
>> Reported-by: Venkat Rao Bagalkote <venkat88 at linux.vnet.ibm.com>
>> Closes: 
>> https://lore.kernel.org/lkml/a70e4064-a040-447b-8556-1fd02f19383d@linux.vnet.ibm.com/T/#u
>> Cc: Mahesh Salgaonkar <mahesh at linux.ibm.com>
>> Cc: Michael Ellerman <mpe at ellerman.id.au>
>> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list at gmail.com>
>> Signed-off-by: Hari Bathini <hbathini at linux.ibm.com>
>> Signed-off-by: Sourabh Jain <sourabhjain at linux.ibm.com>
>
> Version v2 of this series was applied.
>
> If needed, can you rebase this patch ?
>
Sorry, I didn't get that. Rebase on top of which tree/branch?

FYI, there was no functional change from v2 to v3. Only a
"Reviewed-by" tag was added.

Thanks,
Sourabh Jain