Commit 36c3ce6c authored by Marc Zyngier's avatar Marc Zyngier
Browse files

KVM: Get rid of kvm_get_pfn() 



Nobody is using kvm_get_pfn() anymore. Get rid of it.

Acked-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210726153552.1535838-7-maz@kernel.org
parent 0fe49630

include/linux/kvm_host.h

+0 −1
Original line number Diff line number Diff line
@@ -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,

virt/kvm/kvm_main.c

+1 −8
Original line number Diff line number Diff line
@@ -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)