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

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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>
This commit is contained in:
Sean Christopherson 2024-10-10 11:24:22 -07:00 • committed by Paolo Bonzini
parent 06cdaff80e
commit d0ef8d9fbe
1 changed files with 1 additions and 1 deletions
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2
arch/s390/kvm/vsie.c
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@ -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));
}