[PATCH 01/11] kexec_file: allow archs to handle special regions while locating memory hole

Hari Bathini hbathini at linux.ibm.com
Mon Jun 29 02:00:35 EDT 2020

On 28/06/20 7:58 am, piliu wrote:
> Hi Hari,
> If in [4/11],  get_exclude_memory_ranges() turns out to be unnecessary
> ,then this patch is abundant either. As my understanding, memblock has
> already helped to achieved the purpose that get_exclude_memory_ranges()
> wants.

As mentioned in the other patch, there is a need for @exclude_ranges as crashkernel
region is likely to have an overlap with regions like opal, rtas..

But yeah.. the weak function should have been kexec_locate_mem_hole() instead
of kexec_add_buffer(). Will take care of that in v2.

> On 06/27/2020 03:04 AM, Hari Bathini wrote:
>> Some archs can have special memory regions, within the given memory
>> range, which can't be used for the buffer in a kexec segment. As
>> kexec_add_buffer() function is being called from generic code as well,
>> add weak arch_kexec_add_buffer definition for archs to override & take
>> care of special regions before trying to locate a memory hole.
>> Signed-off-by: Hari Bathini <hbathini at linux.ibm.com>


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