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Do not prefetch GFNs that have memory protections applied. Signed-off-by: Nicolas Saenz Julienne Signed-off-by: Paolo Bonzini Link: https://patch.msgid.link/20260918135030.171564-25-pbonzini@redhat.com Signed-off-by: Paolo Bonzini --- arch/x86/kvm/mmu/mmu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 6348669bf882..f689e4890e42 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -3240,6 +3240,11 @@ static bool kvm_mmu_prefetch_sptes(struct kvm_vcpu *vcpu, gfn_t gfn, u64 *sptep, return false; for (i = 0; i < nr_pages; i++, gfn++, sptep++) { + if (kvm_get_vm_memory_attributes(vcpu->kvm, gfn)) { + kvm_release_page_clean(pages[i]); + continue; + } + mmu_set_spte(vcpu, slot, sptep, access, gfn, page_to_pfn(pages[i]), NULL); -- 2.52.0