Re: [PATCH v1 04/13] KVM: x86/mmu: Factor out logic to atomically install a new page table

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On Tue, Jan 4, 2022 at 2:32 AM Peter Xu <peterx@xxxxxxxxxx> wrote:
>
> On Mon, Dec 13, 2021 at 10:59:09PM +0000, David Matlack wrote:
> > +/*
> > + * tdp_mmu_install_sp_atomic - Atomically replace the given spte with an
> > + * spte pointing to the provided page table.
> > + *
> > + * @kvm: kvm instance
> > + * @iter: a tdp_iter instance currently on the SPTE that should be set
> > + * @sp: The new TDP page table to install.
> > + * @account_nx: True if this page table is being installed to split a
> > + *              non-executable huge page.
> > + *
> > + * Returns: True if the new page table was installed. False if spte being
> > + *          replaced changed, causing the atomic compare-exchange to fail.
> > + *          If this function returns false the sp will be freed before
>
> s/will/will not/?

Good catch. This comment is leftover from the RFC patch where it did
free the sp.

>
> > + *          returning.
> > + */
>
> --
> Peter Xu
>



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