On Fri, Nov 04, 2016 at 11:24:00AM +0000, Eric Auger wrote:
> Fix the size check within start_pfn and limit_pfn.
>
> Signed-off-by: Eric Auger <eric.au...@redhat.com>
>
> ---
>
> the issue was observed when playing with 1 page iova domain with
> higher iova reserved.
> ---
> drivers/iommu/iova.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c
> index e23001b..ee29dbf 100644
> --- a/drivers/iommu/iova.c
> +++ b/drivers/iommu/iova.c
> @@ -147,7 +147,7 @@ static int __alloc_and_insert_iova_range(struct
> iova_domain *iovad,
> if (!curr) {
> if (size_aligned)
> pad_size = iova_get_pad_size(size, limit_pfn);
> - if ((iovad->start_pfn + size + pad_size) > limit_pfn) {
> + if ((iovad->start_pfn + size + pad_size - 1) > limit_pfn) {
A >= check is more readable here.
Joerg
