Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

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On 12/02/2021 21:19, Justin Forbes wrote:
> On Fri, Feb 12, 2021 at 10:21 AM Ben Cotton <bcotton@xxxxxxxxxx> wrote:
>>
>> https://fedoraproject.org/wiki/Changes/Power4kPageSize
>>
>> == Summary ==
>>
>> On ppc64le, the kernel is currently compiled for 64k page size.
>>
>> This change proposes using the more common 4k page size.
>>
>> Some HPC workloads may be disadvantaged slightly.  Workstation users
>> are likely to encounter fewer bugs.
>>
>> Some things, like the AMD Radeon GPU drivers, firmware or related
>> code, appear to be completely non-functional on the 64k page size.
>> Insufficient upstream developers are testing such issues on this
>> architecture.
> 
> Just as there are many things that expect the 64K page size.  I am not
> doing this.
> 
> Justin

Can you please identify some of the things that expect 64k?

If the GPU drivers don't work that makes it a complete non-starter for
many workstation users, or they have to compile their own kernels or
obtain custom kernels from another user.
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