Re: [PATCH] genirq/debugfs: add new config option for trigger interrupt from userspace
From: Marc Zyngier
Date: Fri Feb 28 2020 - 11:37:21 EST
Hi Joe,
On 2020-02-28 05:42, Joe Jin wrote:
commit 536e2e34bd00 ("genirq/debugfs: Triggering of interrupts from
userspace") is allowed developer inject interrupts via irq debugfs,
which
is very useful during development phase, but on a production system,
this
is very dangerous, add new config option, developers can enable it as
needed instead of enabling it by default when irq debugfs is enabled.
I don't really mind the patch (although it could be more elegant), but
in
general I object to most debugfs options being set on a production
kernel.
There is way too much information in most debugfs backends to be
comfortable
with it, and you can find things like page table dumps, for example...
M.
--
Jazz is not dead. It just smells funny...