KVM: x86/mmu: fix determination of max NPT mapping level for private …

…pages The `if (req_max_level)` test was meant ignore req_max_level if PG_LEVEL_NONE was returned. Hence, this function should return max_level instead of the ignored req_max_level. This is only a latent issue for now, since guest_memfd does not support large pages. Signed-off-by: Ackerley Tng <[email protected]> Message-ID: <[email protected]> Fixes: f32fb32 ("KVM: x86: Add hook for determining max NPT mapping level") Signed-off-by: Paolo Bonzini <[email protected]>
wafgo · Aug 1, 2024 · aca0ec9 · aca0ec9
1 parent 66a644c
commit aca0ec9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
@@ -4335,7 +4335,7 @@ static u8 kvm_max_private_mapping_level(struct kvm *kvm, kvm_pfn_t pfn,
 	if (req_max_level)
 		max_level = min(max_level, req_max_level);
 
-	return req_max_level;
+	return max_level;
 }
 
 static int kvm_faultin_pfn_private(struct kvm_vcpu *vcpu,