[dpdk-dev] [PATCH] igb_uio: MSI IRQ mode, irq enable/disable refactored

[Stephen Hemminger]

On Mon, 21 Aug 2017 19:33:45 +0200
Markus Theil <markus.theil at tu-ilmenau.de> wrote:

> This patch adds MSI IRQ mode and in a way, that should
> also work on older kernel versions. The base for my patch
> was an attempt to do this in cf705bc36c which was later reverted in
> d8ee82745a. Compilation was tested on Linux 3.2, 4.10 and 4.12.
> 
> MSI(X) setup was already using pci_alloc_irq_vectors before,
> but calls to pci_free_irq_vectors were missing and added.
> 
> Signed-off-by: Markus Theil <markus.theil at tu-ilmenau.de>

I wonder if DPDK should only N-1 Long Term Stable kernel.org kernels?
That would mean 4.4.83 or later now, and 4.9 or later starting with 18.XX releases.

If enterprise distro's want to backport more, that is their prerogative but upstream
DPDK shouldn't have to worry about it. The current mess with KNI especially is out
of hand.