linux-kernel - Re: [BUG] x86: reboot doesn't reboot

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 4 Apr 2014 11:19:26 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	"Li, Aubrey" <aubrey.li@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [BUG] x86: reboot doesn't reboot

On Fri, Apr 4, 2014 at 9:21 AM, Matthew Garrett <mjg59@...f.ucam.org> wrote:
>
> Because Windows doesn't use CF9 but machines reboot anyway. That
> shouldn't be a controversial point of view.

No, that's not a controversial view.

But it's not the case for us, and I haven't seen a patch to make us
work more like Windows, so for *us*, and in this universe (rather than
some make-believe one), the fact that we need to use pci to reboot is
simply a fact. Including, very much, on "production hardware".

So I repeat: I'd love to fix whatever it is that we do that is
different and triggers problems (particularly on Dell, but there are
certainly other vendors too). But in the absense of that (and I
haven't actually seen a serious patch for it), denying that reboot=pci
is sometimes the right thing - regardless of "production" hardware or
not is not valid. That's what I reacted to.

               Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/