linux-kernel - Re: [PATCH v2 1/1] KVM: arm64: Allow cacheable stage 2 mapping using VMA flags

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Date: Wed, 11 Dec 2024 02:58:38 +0000
From: Ankit Agrawal <ankita@...dia.com>
To: Will Deacon <will@...nel.org>
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Subject: Re: [PATCH v2 1/1] KVM: arm64: Allow cacheable stage 2 mapping using
 VMA flags

Thanks Will for taking a look.

>> The device memory such as on the Grace Hopper systems is interchangeable
>> with DDR memory and retains its properties. Allow executable faults
>> on the memory determined as Normal cacheable.
>
> Sorry, but a change this subtle to the arch code is going to need a _much_
> better explanation than the rambling text above.

Understood, I'll work on the text and try to make it coherent.


> I also suspect that you're trying to do too many things in one patch.
> In particular, the changes to execute permission handling absolutely
> need to be discussed as a single patch in the series.
>
> Please can you split this up in to a set of changes with useful commit
> messages so that we can review them?

Yes. I'll take out the execute permission part to a separate patch.


> Jason knows how to do this so you could ask him for help if you're stuck.
> Otherwise, there are plenty of examples of well-written commit messages
> on the mailing list and in the git history.

Ack.