Commit d0ef8d9f authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
Browse files

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: default avatarSean Christopherson <seanjc@google.com>
Tested-by: default avatarDmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-ID: <20241010182427.1434605-81-seanjc@google.com>
parent 06cdaff8

arch/s390/kvm/vsie.c

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

}