Re: [PATCH v15 17/21] KVM: arm64: nv: Handle VNCR_EL2-triggered faults backed by guest_memfd

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On Thu, 17 Jul 2025 17:27:27 +0100,
Fuad Tabba <tabba@xxxxxxxxxx> wrote:
> 
> Handle faults for memslots backed by guest_memfd in arm64 nested
> virtualization triggerred by VNCR_EL2.
> 
> * Introduce is_gmem output parameter to kvm_translate_vncr(), indicating
>   whether the faulted memory slot is backed by guest_memfd.
> 
> * Dispatch faults backed by guest_memfd to kvm_gmem_get_pfn().
> 
> * Update kvm_handle_vncr_abort() to handle potential guest_memfd errors.
>   Some of the guest_memfd errors need to be handled by userspace,
>   instead of attempting to (implicitly) retry by returning to the guest.
> 
> Suggested-by: Marc Zyngier <maz@xxxxxxxxxx>
> Signed-off-by: Fuad Tabba <tabba@xxxxxxxxxx>

Reviewed-by: Marc Zyngier <maz@xxxxxxxxxx>

	M.

-- 
Jazz isn't dead. It just smells funny.




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