Re: [PATCH v2] iommu/iova: change IOVA_MAG_SIZE to 127 to save memory

[Joerg Roedel]

On Sun, Jul 03, 2022 at 07:44:50PM +0800, Feng Tang wrote:
> kmalloc will round up the request size to power of 2, and current
> iova_magazine's size is 1032 (1024+8) bytes, so each instance
> allocated will get 2048 bytes from kmalloc, causing around 1KB
> waste.
> 
> Change IOVA_MAG_SIZE from 128 to 127 to make size of 'iova_magazine'
> 1024 bytes so that no memory will be wasted.
> 
> Signed-off-by: Feng Tang <feng.tang@xxxxxxxxx>
> Acked-by: Robin Murphy <robin.murphy@xxxxxxx>

Applied, thanks.