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SubjectRe: [PATCH 1/4] Pte drop ptep_get_and_clear paravirt op.patch
Jeremy Fitzhardinge wrote:
> Zachary Amsden wrote:
>> In shadow mode hypervisors, ptep_get_and_clear achieves the desired
>> purpose of keeping the shadows in sync by issuing a native_get_and_clear,
>> followed by a call to pte_update, which indicates the PTE has been
>> modified.
>> Direct mode hypervisors (Xen) have no need for this anyway, and will trap
>> the update using writable pagetables.
>> This means no hypervisor makes use of ptep_get_and_clear; there is no
>> reason to have it in the paravirt-ops structure. Change confusing
>> terminology about raw vs. native functions into consistent use of
>> native_pte_xxx for operations which do not invoke paravirt-ops.
> Looks OK to me. Are you going to put this into the pvops queue?
> Acked-by: Jeremy Fitzhardinge <>

Yes, the rest are still undergoing feedback. I'll kick this in and
fixup the damage it causes.

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