From: "H. Peter Anvin" <hpa@zytor.com>
To: "Li, Aubrey" <aubrey.li@linux.intel.com>,
Matthew Garrett <mjg59@srcf.ucam.org>
Cc: "H. Peter Anvin" <hpa@linux.intel.com>,
"alan@linux.intel.com" <alan@linux.intel.com>,
linux-kernel@vger.kernel.org, Len.Brown@intel.com,
Adam Williamson <awilliam@redhat.com>
Subject: Re: [patch] x86: Introduce BOOT_EFI and BOOT_CF9 into the reboot sequence loop
Date: Sat, 01 Mar 2014 16:33:15 -0800 [thread overview]
Message-ID: <53127C4B.1060505@zytor.com> (raw)
In-Reply-To: <53127AA7.8040700@linux.intel.com>
On 03/01/2014 04:26 PM, Li, Aubrey wrote:
>>
>> On March 1, 2014 12:21:39 PM PST, Matthew Garrett <mjg59@srcf.ucam.org> wrote:
>>> if we've hit the keyboard controller and ACPI twice, and the system is still alive, and
>>> if we have standard PCI ports,
>
>>> it doesn't seem like poking them is likely to make anything actively
> worse.
>>
> This is exactly what I'm trying to express. thanks Matt. It doesn't make
> anything worse, it makes reboot working on some systems.
>
> On 2014/3/2 4:26, H. Peter Anvin wrote:
>> True... trying cf9_cond with low priority probably makes sense.
>
> I'm not asking CF9 only, I'm asking all of the known method in reboot.c.
> So, BIOS is appliable as well with the same logic and with low priority,
> isn't it?
>
The problem comes in when a method doesn't just not work, but hangs the
machine. BIOS *WILL* hang the machine if it doesn't work. CF9 has been
known to hang the machine.
-hpa
next prev parent reply other threads:[~2014-03-02 0:33 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-28 4:11 [patch] x86: Introduce BOOT_EFI and BOOT_CF9 into the reboot sequence loop Li, Aubrey
2014-02-28 4:56 ` Matthew Garrett
2014-02-28 5:22 ` Li, Aubrey
2014-02-28 5:56 ` Matthew Garrett
2014-02-28 6:07 ` Li, Aubrey
2014-02-28 6:12 ` Matthew Garrett
2014-02-28 6:20 ` Li, Aubrey
2014-02-28 6:23 ` Matthew Garrett
2014-02-28 6:39 ` Li, Aubrey
2014-02-28 6:44 ` Matthew Garrett
2014-02-28 6:54 ` Li, Aubrey
2014-02-28 17:47 ` H. Peter Anvin
2014-02-28 22:11 ` Li, Aubrey
2014-02-28 22:16 ` Adam Williamson
2014-03-01 17:10 ` Li, Aubrey
2014-03-01 17:22 ` Matthew Garrett
2014-03-01 17:31 ` Li, Aubrey
2014-03-01 18:19 ` Matthew Garrett
2014-03-01 19:01 ` Matthew Garrett
2014-03-02 0:15 ` Li, Aubrey
2014-03-01 20:06 ` H. Peter Anvin
2014-03-01 20:21 ` Matthew Garrett
2014-03-01 20:26 ` H. Peter Anvin
2014-03-02 0:26 ` Li, Aubrey
2014-03-02 0:33 ` H. Peter Anvin [this message]
2014-03-02 1:47 ` Li, Aubrey
2014-03-02 2:07 ` H. Peter Anvin
2014-03-02 2:20 ` Li, Aubrey
2014-03-02 2:23 ` Matthew Garrett
2014-03-02 2:35 ` H. Peter Anvin
2014-03-02 10:39 ` Li, Aubrey
2014-03-02 16:52 ` H. Peter Anvin
2014-03-02 22:13 ` Li, Aubrey
2014-03-02 22:26 ` Matthew Garrett
2014-03-02 22:45 ` Li, Aubrey
2014-03-02 23:11 ` Matthew Garrett
2014-03-02 23:23 ` Li, Aubrey
2014-03-03 0:07 ` Matthew Garrett
2014-03-03 0:18 ` H. Peter Anvin
2014-03-03 1:36 ` Li, Aubrey
2014-03-03 1:47 ` H. Peter Anvin
2014-03-03 1:49 ` Li, Aubrey
2014-03-03 22:11 ` Li, Aubrey
2014-03-02 23:57 ` H. Peter Anvin
2014-03-05 23:39 ` [tip:x86/reboot] x86, reboot: Add EFI and CF9 reboot methods into the default list tip-bot for Li, Aubrey
2014-03-05 23:45 ` [tip:x86/reboot] x86, reboot: Only use CF9_COND automatically, not CF9 tip-bot for H. Peter Anvin
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