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UPSTREAM: KVM: Get rid of kvm_get_pfn()

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

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210726153552.1535838-7-maz@kernel.org
(cherry picked from commit 36c3ce6c0d)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 198418208
Change-Id: I8cda22ef8cb326ea4b7eb5fa39c1037d37467cf9
This commit is contained in:
Marc Zyngier
2021-07-26 16:35:52 +01:00
committed by Will Deacon
parent bcca459a63
commit 41ddd2df53
2 changed files with 1 additions and 9 deletions
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1
include/linux/kvm_host.h
View File

@@ -727,7 +727,6 @@ 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,

9
virt/kvm/kvm_main.c
View File

@@ -1937,7 +1937,7 @@ 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.
@@ -2330,13 +2330,6 @@ 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)