Re: [PATCH bpf 4/4] bpf: use __vmalloc_node_range() with VM_TRY_HUGE_VMAP for bpf_prog_pack

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> On Mar 30, 2022, at 5:00 PM, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> 
> On Wed, Mar 30 2022 at 15:56, Song Liu wrote:
>> We cannot yet savely enable HAVE_ARCH_HUGE_VMAP for all vmalloc in X86_64.
>> Let bpf_prog_pack to call __vmalloc_node_range() with VM_TRY_HUGE_VMAP
>> directly.
> 
> Again, this changelog lacks any form of reasoning and justification.
> 
> Aside of that there is absolutely nothing x86_64 specific in the patch.
> 
> You might know all the details behind this change today, but will you be
> able to make sense of the above half a year from now?
> 
> Even if you can, then anyone else is left in the dark.
> 
> Thanks,
> 
>        tglx


I will provide more information in the next version.

Thanks,
Song



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