linux-kernel - Re: [RFC PATCH 00/16] KVM: arm64: Add "struct kvm_page

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Message-ID: <aKegF0XyrDF1Z5w4@linux.dev>
Date: Thu, 21 Aug 2025 15:39:19 -0700
From: Oliver Upton <oliver.upton@...ux.dev>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Marc Zyngier <maz@...nel.org>, linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev, linux-kernel@...r.kernel.org,
	James Houghton <jthoughton@...gle.com>
Subject: Re: [RFC PATCH 00/16] KVM: arm64: Add "struct kvm_page_fault"

On Thu, Aug 21, 2025 at 02:00:26PM -0700, Sean Christopherson wrote:
> Add an arm64 version of "struct kvm_page_fault" to (hopefully) tidy up
> the abort path, and to pave the way for things like KVM Userfault[*] that
> want to consume kvm_page_fault in arch-neutral code.
> 
> This is essentially one giant nop of code shuffling.
> 
> RFC as this is only compile-tested.  I didn't want to spend time testing
> until I got feedback on whether or not y'all are amenable to the general idea.

I appreciate the improved scoping around things like mmap lock, so this
seems like a net-win in terms of readability. Just want to clarify the
way this gets consumed from arch-neutral code and actually read in
detail.

Thanks,
Oliver