Reviewed-by: Yan Zhao <yan.y.zhao@xxxxxxxxx>
On Fri, Mar 10, 2023 at 04:22:39PM -0800, Sean Christopherson wrote:
> Use an "unsigned long" instead of an "int" when iterating over the gfns
> in a memslot. The number of pages in the memslot is tracked as an
> "unsigned long", e.g. KVMGT could theoretically break if a KVM memslot
> larger than 16TiB were deleted (2^32 * 4KiB).
>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/gvt/kvmgt.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
> index 90997cc385b4..68be66395598 100644
> --- a/drivers/gpu/drm/i915/gvt/kvmgt.c
> +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
> @@ -1634,7 +1634,7 @@ static void kvmgt_page_track_flush_slot(struct kvm *kvm,
> struct kvm_memory_slot *slot,
> struct kvm_page_track_notifier_node *node)
> {
> - int i;
> + unsigned long i;
> gfn_t gfn;
> struct intel_vgpu *info =
> container_of(node, struct intel_vgpu, track_node);
> --
> 2.40.0.rc1.284.g88254d51c5-goog
>
