[PATCH 5/5] KVM: Get rid of kvm_get_pfn()
Paolo Bonzini
pbonzini at redhat.com
Sun Jul 18 23:31:45 PDT 2021
On 17/07/21 11:55, Marc Zyngier wrote:
> Nobody is using kvm_get_pfn() anymore. Get rid of it.
>
> Signed-off-by: Marc Zyngier <maz at kernel.org>
> ---
> include/linux/kvm_host.h | 1 -
> virt/kvm/kvm_main.c | 9 +--------
> 2 files changed, 1 insertion(+), 9 deletions(-)
>
> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index ae7735b490b4..9818d271c2a1 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -824,7 +824,6 @@ void kvm_release_pfn_clean(kvm_pfn_t pfn);
> void kvm_release_pfn_dirty(kvm_pfn_t pfn);
> void kvm_set_pfn_dirty(kvm_pfn_t pfn);
> void kvm_set_pfn_accessed(kvm_pfn_t pfn);
> -void kvm_get_pfn(kvm_pfn_t pfn);
>
> void kvm_release_pfn(kvm_pfn_t pfn, bool dirty, struct gfn_to_pfn_cache *cache);
> int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index 2e410a8a6a67..0284418c4400 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -2215,7 +2215,7 @@ static int hva_to_pfn_remapped(struct vm_area_struct *vma,
> * Get a reference here because callers of *hva_to_pfn* and
> * *gfn_to_pfn* ultimately call kvm_release_pfn_clean on the
> * returned pfn. This is only needed if the VMA has VM_MIXEDMAP
> - * set, but the kvm_get_pfn/kvm_release_pfn_clean pair will
> + * set, but the kvm_try_get_pfn/kvm_release_pfn_clean pair will
> * simply do nothing for reserved pfns.
> *
> * Whoever called remap_pfn_range is also going to call e.g.
> @@ -2612,13 +2612,6 @@ void kvm_set_pfn_accessed(kvm_pfn_t pfn)
> }
> EXPORT_SYMBOL_GPL(kvm_set_pfn_accessed);
>
> -void kvm_get_pfn(kvm_pfn_t pfn)
> -{
> - if (!kvm_is_reserved_pfn(pfn))
> - get_page(pfn_to_page(pfn));
> -}
> -EXPORT_SYMBOL_GPL(kvm_get_pfn);
> -
> static int next_segment(unsigned long len, int offset)
> {
> if (len > PAGE_SIZE - offset)
>
Acked-by: Paolo Bonzini <pbonzini at redhat.com>
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