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KVM: Drop APIs that manipulate "struct page" via pfns

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Remove all kvm_{release,set}_pfn_*() APIs now that all users are gone.

No functional change intended.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20241010182427.1434605-85-seanjc@google.com>
This commit is contained in:
Sean Christopherson 2024-10-10 11:24:26 -07:00 committed by Paolo Bonzini
parent 2362506f7c
commit 93b7da404f
2 changed files with 0 additions and 60 deletions
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5
include/linux/kvm_host.h
View File

@ -1274,11 +1274,6 @@ static inline kvm_pfn_t kvm_faultin_pfn(struct kvm_vcpu *vcpu, gfn_t gfn,
write ? FOLL_WRITE : 0, writable, refcounted_page);
}
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);
int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
int len);
int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);

55
virt/kvm/kvm_main.c
View File

@ -3164,61 +3164,6 @@ void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map)
}
EXPORT_SYMBOL_GPL(kvm_vcpu_unmap);
void kvm_release_pfn_clean(kvm_pfn_t pfn)
{
struct page *page;
if (is_error_noslot_pfn(pfn))
return;
page = kvm_pfn_to_refcounted_page(pfn);
if (!page)
return;
kvm_release_page_clean(page);
}
EXPORT_SYMBOL_GPL(kvm_release_pfn_clean);
void kvm_release_pfn_dirty(kvm_pfn_t pfn)
{
struct page *page;
if (is_error_noslot_pfn(pfn))
return;
page = kvm_pfn_to_refcounted_page(pfn);
if (!page)
return;
kvm_release_page_dirty(page);
}
EXPORT_SYMBOL_GPL(kvm_release_pfn_dirty);
/*
* Note, checking for an error/noslot pfn is the caller's responsibility when
* directly marking a page dirty/accessed. Unlike the "release" helpers, the
* "set" helpers are not to be used when the pfn might point at garbage.
*/
void kvm_set_pfn_dirty(kvm_pfn_t pfn)
{
if (WARN_ON(is_error_noslot_pfn(pfn)))
return;
if (pfn_valid(pfn))
kvm_set_page_dirty(pfn_to_page(pfn));
}
EXPORT_SYMBOL_GPL(kvm_set_pfn_dirty);
void kvm_set_pfn_accessed(kvm_pfn_t pfn)
{
if (WARN_ON(is_error_noslot_pfn(pfn)))
return;
if (pfn_valid(pfn))
kvm_set_page_accessed(pfn_to_page(pfn));
}
EXPORT_SYMBOL_GPL(kvm_set_pfn_accessed);
static int next_segment(unsigned long len, int offset)
{
if (len > PAGE_SIZE - offset)