From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: "Li, Aubrey" <aubrey.li@linux.intel.com>,
Ingo Molnar <mingo@kernel.org>,
hpa@zytor.com, linux-kernel@vger.kernel.org,
torvalds@linux-foundation.org, rostedt@goodmis.org,
tglx@linutronix.de, linux-tip-commits@vger.kernel.org,
Adam Williamson <awilliam@redhat.com>
Subject: Re: [tip:x86/reboot] [PATCH] x86: Try the BIOS reboot method before the PCI reboot method
Date: Sun, 6 Apr 2014 18:40:23 +0100 [thread overview]
Message-ID: <20140406184023.1e31412d@alan.etchedpixels.co.uk> (raw)
In-Reply-To: <20140404151359.GB12370@srcf.ucam.org>
On Fri, 4 Apr 2014 16:13:59 +0100
Matthew Garrett <mjg59@srcf.ucam.org> wrote:
> On Fri, Apr 04, 2014 at 09:38:57PM +0800, Li, Aubrey wrote:
>
> > I don't think there is enough justification to revert the patch. We
> > introduce EFI into the default list, we didn't see any reason to remove
> > it out so far.
>
> We should be using the EFI method, yes. But it seems that CF9 isn't
> safe, so we should drop that.
>
Windows does not use CF9 and there are known, documented cases where CF9
will not work reliably. That includes reliable reboot on some Baytrail
systems. (Erratum VLT60 and VLT62).
So we really shouldn't be doing 0xCF9 except as a last resort if we are
still alive and have been through the official reboot methods.
Alan
next prev parent reply other threads:[~2014-04-06 17:40 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-03 6:14 [BUG] x86: reboot doesn't reboot Steven Rostedt
[not found] ` <070BEF4AC20468458C22969097656CD91163106C@shsmsx102.ccr.corp.intel.com>
2014-04-03 6:30 ` FW: " Li, Aubrey
2014-04-03 12:09 ` Steven Rostedt
2014-04-03 13:41 ` Steven Rostedt
2014-04-03 13:45 ` Matthew Garrett
2014-04-03 14:10 ` H. Peter Anvin
2014-04-03 14:47 ` Steven Rostedt
2014-04-03 14:50 ` Matthew Garrett
2014-04-03 15:14 ` Steven Rostedt
2014-04-03 15:17 ` Steven Rostedt
2014-04-03 15:20 ` H. Peter Anvin
2014-04-03 15:21 ` H. Peter Anvin
2014-04-03 15:39 ` Steven Rostedt
2014-04-03 15:58 ` H. Peter Anvin
2014-04-03 16:13 ` Steven Rostedt
2014-04-03 23:23 ` Li, Aubrey
2014-04-03 23:40 ` Steven Rostedt
2014-04-03 23:52 ` Li, Aubrey
2014-04-04 0:12 ` H. Peter Anvin
2014-04-04 1:27 ` Li, Aubrey
2014-04-04 1:40 ` H. Peter Anvin
2014-04-04 6:13 ` Ingo Molnar
2014-04-04 12:34 ` H. Peter Anvin
2014-04-04 15:12 ` Matthew Garrett
2014-04-04 15:13 ` H. Peter Anvin
2014-04-04 15:36 ` Matthew Garrett
2014-04-04 15:39 ` H. Peter Anvin
2014-04-04 15:46 ` Matthew Garrett
2014-04-04 16:01 ` Steven Rostedt
2014-04-04 17:34 ` Ingo Molnar
2014-04-04 17:37 ` H. Peter Anvin
2014-04-04 17:44 ` Ingo Molnar
2014-04-04 18:00 ` Matthew Garrett
2014-04-04 15:38 ` Linus Torvalds
2014-04-04 15:45 ` Matthew Garrett
2014-04-04 15:54 ` Tobias Klausmann
2014-04-04 16:09 ` Linus Torvalds
2014-04-04 16:21 ` Matthew Garrett
2014-04-04 18:19 ` Linus Torvalds
2014-04-28 6:02 ` Yuhong Bao
2014-04-04 16:31 ` H. Peter Anvin
[not found] ` <cbb97256-9323-4d67-8523-061972e07ecc@email.android.com>
2014-04-04 17:01 ` H. Peter Anvin
2014-04-04 17:40 ` Ingo Molnar
2014-04-04 18:26 ` Linus Torvalds
2014-04-04 2:16 ` Steven Rostedt
2014-04-04 2:43 ` Li, Aubrey
2014-04-03 15:35 ` Steven Rostedt
2014-04-04 6:41 ` [PATCH] x86: Try the BIOS reboot method before the PCI reboot method Ingo Molnar
2014-04-04 7:53 ` [PATCH] x86: Don't do the BIOS and PCI 0xCF9 reboot methods by default Ingo Molnar
2014-04-04 7:54 ` [tip:x86/reboot] [PATCH] x86: Try the BIOS reboot method before the PCI reboot method tip-bot for Ingo Molnar
2014-04-04 8:00 ` Ingo Molnar
2014-04-04 12:37 ` H. Peter Anvin
2014-04-04 13:30 ` Steven Rostedt
2014-04-04 13:38 ` Li, Aubrey
2014-04-04 15:09 ` Adam Williamson
2014-04-04 15:13 ` Matthew Garrett
2014-04-04 15:28 ` H. Peter Anvin
2014-04-06 17:40 ` One Thousand Gnomes [this message]
2014-04-06 18:40 ` H. Peter Anvin
2014-04-07 8:00 ` Li, Aubrey
2014-04-07 21:03 ` H. Peter Anvin
2014-04-07 22:04 ` Adam Williamson
2014-04-07 22:09 ` H. Peter Anvin
2014-04-07 23:12 ` Adam Williamson
2014-04-09 20:50 ` H. Peter Anvin
2014-04-04 17:48 ` Ingo Molnar
2014-04-04 19:12 ` Linus Torvalds
2014-04-07 15:42 ` Steven Rostedt
2014-04-14 11:22 ` [tip:x86/urgent] " tip-bot for Ingo Molnar
2014-04-14 11:27 ` Ingo Molnar
2014-04-14 16:04 ` Steven Rostedt
2014-04-16 7:40 ` [tip:x86/urgent] x86: Remove the PCI reboot method from the default chain tip-bot for Ingo Molnar
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