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KVM: PPC: Remove extra get_page() to fix page refcount leak

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Don't manually do get_page() when patching dcbz, as gfn_to_page() gifts
the caller a reference.  I.e. doing get_page() will leak the page due to
not putting all references.

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: <20241010182427.1434605-74-seanjc@google.com>
This commit is contained in:
Sean Christopherson 2024-10-10 11:24:15 -07:00 committed by Paolo Bonzini
parent 7e8f1aa59d
commit 17b7dbaf18
1 changed files with 0 additions and 1 deletions
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arch/powerpc/kvm/book3s_pr.c
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@ -652,7 +652,6 @@ static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
hpage_offset &= ~0xFFFULL;
hpage_offset /= 4;
get_page(hpage);
page = kmap_atomic(hpage);
/* patch dcbz into reserved instruction, so we trap */