[dpdk-dev] [PATCH] mem: fix DMA mask width sanity check

[Burakov, Anatoly]

On 07-Nov-18 9:44 AM, Alejandro Lucero wrote:
> Current code has different max DMA mask width values for 32 and 64
> bits systems. IOMMU hardware could report a higher supported width
> than current MAX_DMA_MASK_BITS when RTE_ARCH_64 is not defined. This
> is actually true with a 32 bits kernel running in a 64 bits server
> with IOMMU hardware. This could also be a problem with embedded systems
> using an IOMMU designed for 64 bits in a 32 bits system.
> 
> This patch leaves a single max DMA mask width which will make sure the
> mask width is within the range for 64 bits variables used for DMA mask.
> This also will avoid wrong values because any value higher than
> 64 bits is likely wrong.
> 
> Signed-off-by: Alejandro Lucero <alejandro.lucero at netronome.com>
> ---

Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>

-- 
Thanks,
Anatoly