KVM: s390: Use kvm_release_page_dirty() to unpin "struct page" memory

Use kvm_release_page_dirty() when unpinning guest pages, as the pfn was
retrieved via pin_guest_page(), i.e. is guaranteed to be backed by struct
page memory.  This will allow dropping kvm_release_pfn_dirty() and
friends.

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: <20241010182427.1434605-81-seanjc@google.com>

diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index 763a070f595572592a1431a1565f044ca511b3e1..e1fdf83879cf12f7079455fba356d66a287770f7 100644 (file)
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -670,7 +670,7 @@ static int pin_guest_page(struct kvm *kvm, gpa_t gpa, hpa_t *hpa)
 /* Unpins a page previously pinned via pin_guest_page, marking it as dirty. */
 static void unpin_guest_page(struct kvm *kvm, gpa_t gpa, hpa_t hpa)
 {
-       kvm_release_pfn_dirty(hpa >> PAGE_SHIFT);
+       kvm_release_page_dirty(pfn_to_page(hpa >> PAGE_SHIFT));
        /* mark the page always as dirty for migration */
        mark_page_dirty(kvm, gpa_to_gfn(gpa));
 }