On 10/12/2015 07:23 PM, Alex Williamson wrote:
Also, although you think the long option will set the bar high
enough it probably will not satisfy anyone. It is annoying enough, that
I would just carry a patch to remove it the silly requirement.
And the the people who believe
all user mode DMA is evil won't be satisfied either.
I find that many users blindly follow howtos and only sometimes do they
question the options if they sound scary enough. So yeah, I would
intend to make the option upstream sound scary enough for people to
think twice about using it and maybe even read the description. That
still doesn't prevent pasting it into modprobe.d and forgetting about
it.
I think we need to allow for packages to work with this. I.e. drop
files into config directories rather than require editing of config
files. I think this is mostly workable via modprobe.d.
(for our own use case, we don't require the extreme performance of many
L2/L3 dpdk apps so we'll work with regular iommued vfio for bare-metal
installations and ship prebuilt virtual machine images for clouds, so it
doesn't matter that much to me).
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