svn commit: r326809 - head/sys/dev/cardbus

[Alexey Dokuchaev]

On Thu, Dec 14, 2017 at 12:48:17AM +0700, Eugene Grosbein wrote:
> ...
> I don't understand why you want to backout that. It changed nothing for
> amd64.  An i386 is still vulnerable to double faults just because of a
> network packet processing path can overflow kstack for the GENERIC kernel.

The reason (or shall I say concern) was raised by kib@, as quoted:

> Plain workstation use, like X11+browser+editor+some other programs easily
> allocates 1000+ threads.  It was still possible to use 32bit x86 for that,
> of course in max memory config without PAE, and without ZFS.  Add some
> load that involves network, for instance torrent client, to establish the
> pressure on KVA.
> I am almost sure that users would get troubles now.

I'm a plain workstation user with X11+browser+torrent+quake2+you-name-it
apps, PAE-less, ZFS-less, and I don't want to get troubles due to r326758.

./danfe