On 18 April 2016 at 10:39, Alex Shi alex.shi@linaro.org wrote:
This commit (166bdbd2316116 iommu/arm-smmu: Add support for MSI on
SMMUv3) depends on a huge MSI change on 4.2/4.3 which could cause PCI and MSI related driver changes.
Consider the following concern: 1, big effort to backport the MSI domain/list changes. 2, msi_desc struct change would cause MSI related downstream driver rewriting which works on 4.1 kernel. 3, I have no suitable arm64 board in hands, my test relay on Naresh who living in India. So the testing would become unbearable for such big changes.
So I want to skip this commit in the IOMMU backporting. and suggest using LSK 4.4 kernel if someone really want the platform MSI. Any comments?
Seems reasonable to me, it looked like we didn't need to backport all the user changes to get the core infrastructure.