[RFC PATCH v6 70/92] kvm: x86: filter out access rights only when tracked by the introspection tool

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It should complete the commit fd34a9518173 ("kvm: x86: consult the page tracking from kvm_mmu_get_page() and __direct_map()")

Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
 arch/x86/kvm/mmu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 65b6acba82da..fd64cf1115da 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2660,6 +2660,9 @@ static void clear_sp_write_flooding_count(u64 *spte)
 static unsigned int kvm_mmu_page_track_acc(struct kvm_vcpu *vcpu, gfn_t gfn,
 					   unsigned int acc)
 {
+	if (!kvmi_tracked_gfn(vcpu, gfn))
+		return acc;
+
 	if (kvm_page_track_is_active(vcpu, gfn, KVM_PAGE_TRACK_PREREAD))
 		acc &= ~ACC_USER_MASK;
 	if (kvm_page_track_is_active(vcpu, gfn, KVM_PAGE_TRACK_PREWRITE) ||



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