diff options
| author | Gavin Shan <gshan@redhat.com> | 2020-01-21 16:56:59 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-14 16:33:26 -0500 |
| commit | 5b63ffb30b8148f87e3585f916772adf76e05765 (patch) | |
| tree | 3e2beba6dc50067f6e095fe0300132f4b7568055 /virt/kvm/arm | |
| parent | 0e0310adf2207cc175fb86833b0e61b8237edb25 (diff) | |
KVM: arm/arm64: Fix young bit from mmu notifier
commit cf2d23e0bac9f6b5cd1cba8898f5f05ead40e530 upstream.
kvm_test_age_hva() is called upon mmu_notifier_test_young(), but wrong
address range has been passed to handle_hva_to_gpa(). With the wrong
address range, no young bits will be checked in handle_hva_to_gpa().
It means zero is always returned from mmu_notifier_test_young().
This fixes the issue by passing correct address range to the underly
function handle_hva_to_gpa(), so that the hardware young (access) bit
will be visited.
Fixes: 35307b9a5f7e ("arm/arm64: KVM: Implement Stage-2 page aging")
Signed-off-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200121055659.19560-1-gshan@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt/kvm/arm')
| -rw-r--r-- | virt/kvm/arm/mmu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c index bf330b493c1e..a5bc10d30618 100644 --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -1925,7 +1925,8 @@ int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) if (!kvm->arch.pgd) return 0; trace_kvm_test_age_hva(hva); - return handle_hva_to_gpa(kvm, hva, hva, kvm_test_age_hva_handler, NULL); + return handle_hva_to_gpa(kvm, hva, hva + PAGE_SIZE, + kvm_test_age_hva_handler, NULL); } void kvm_mmu_free_memory_caches(struct kvm_vcpu *vcpu) |