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

[Thomas Monjalon]

07/11/2018 12:47, Ferruh Yigit:
> On 11/7/2018 10:14 AM, Burakov, Anatoly wrote:
> > 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>
> 
> Tested-by: Ferruh Yigit <ferruh.yigit at intel.com>

Fixes: 223b7f1d5ef6 ("mem: add function for checking memseg IOVA")

Applied, thanks