Commit 464af6fc authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

KVM: x86: check for nEPT/nNPT in slow flush hypercalls 



Checking is_guest_mode(vcpu) is incorrect, because translate_nested_gpa()
is only valid if an L2 guest is running *with nested EPT/NPT enabled*.
Instead use the same condition as translate_nested_gpa() itself.

Cc: stable@vger.kernel.org
Reviewed-by: default avatarSean Christopherson <seanjc@google.com>
Fixes: aee73823 ("KVM: x86: Prepare kvm_hv_flush_tlb() to handle L2's GPAs", 2022-11-18)
Link: https://patch.msgid.link/20260503200905.106077-1-pbonzini@redhat.com/


Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 39f1c201

arch/x86/kvm/hyperv.c

+1 −1
Original line number Diff line number Diff line
@@ -2040,7 +2040,7 @@ static u64 kvm_hv_flush_tlb(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc) 
	 * flush).  Translate the address here so the memory can be uniformly

	 * read with kvm_read_guest().

	 */

	if (!hc->fast && is_guest_mode(vcpu)) {

	if (!hc->fast && mmu_is_nested(vcpu)) {

		hc->ingpa = translate_nested_gpa(vcpu, hc->ingpa, 0, NULL);

		if (unlikely(hc->ingpa == INVALID_GPA))

			return HV_STATUS_INVALID_HYPERCALL_INPUT;