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From: Ingo Molnar <mingo@elte.hu>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Pavel Machek <pavel@ucw.cz>, Tejun Heo <tj@kernel.org>,
	"Ahmed S. Darwish" <darwish.07@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, X86-ML <x86@kernel.org>,
	Tony Luck <tony.luck@intel.com>, Dave Jones <davej@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Randy Dunlap <rdunlap@xenotime.net>,
	Willy Tarreau <wtarreau@hera.kernel.org>,
	Willy Tarreau <w@1wt.eu>, Dirk Hohndel <hohndel@infradead.org>,
	Dirk.Hohndel@intel.com, IDE-ML <linux-ide@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Fr?d?ric Weisbecker <fweisbec@gmail.com>,
	Borislav Petkov <bp@alien8.de>,
	Arjan van de Ven <arjan@infradead.org>
Subject: Re: [PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk upon panic
Date: Thu, 3 Feb 2011 18:57:21 +0100	[thread overview]
Message-ID: <20110203175721.GB8785@elte.hu> (raw)
In-Reply-To: <4D4AC996.4070307@zytor.com>


* H. Peter Anvin <hpa@zytor.com> wrote:

> On 02/03/2011 06:36 AM, Pavel Machek wrote:
> > 
> > Could we read the log area, first, verify it contains signature, write
> > it back?
> > 								Pavel
> 
> Yes, but that doesn't guarantee no data corruption caused by handing
> over from one driver to another.

Waiting a few seconds? Is there any sufficiently high number of X where waiting X 
seconds would make it safe to touch the hardware? (i.e. it would guarantee that 
pending commands are flushed, etc.)

Thanks,

	Ingo

  reply	other threads:[~2011-02-03 17:58 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-25 13:47 Ahmed S. Darwish
2011-01-25 13:51 ` [PATCH -next 1/2][RFC] x86: Saveoops: Switch to real-mode and call BIOS Ahmed S. Darwish
2011-01-25 17:26   ` H. Peter Anvin
2011-01-25 13:53 ` [PATCH -next 2/2][RFC] x86: Saveoops: Reserve low memory and register code Ahmed S. Darwish
2011-01-25 17:29   ` H. Peter Anvin
2011-01-26  9:04     ` Ahmed S. Darwish
2011-01-25 14:09 ` [PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk upon panic Ingo Molnar
2011-01-25 15:08   ` Tejun Heo
2011-01-25 17:33     ` H. Peter Anvin
2011-01-26 11:44       ` Ahmed S. Darwish
2011-02-03 14:36     ` Pavel Machek
2011-02-03 15:28       ` H. Peter Anvin
2011-02-03 17:57         ` Ingo Molnar [this message]
2011-02-03 21:07           ` H. Peter Anvin
2011-01-25 15:36   ` Ahmed S. Darwish
2011-01-25 16:02     ` James Bottomley
2011-01-25 17:05       ` Ahmed S. Darwish
2011-01-25 17:20         ` James Bottomley
2011-01-25 22:10         ` Mark Lord
2011-01-25 22:16           ` Randy Dunlap
2011-01-25 22:45             ` Jeff Garzik
2011-01-25 22:58               ` H. Peter Anvin
2011-01-26  0:26                 ` Jeff Garzik
2011-01-31  2:59                 ` Rusty Russell
2011-01-31 10:45                   ` Ingo Molnar
2011-01-25 17:32     ` Tony Luck
2011-01-25 17:36       ` H. Peter Anvin
2011-01-25 19:04       ` Jeff Garzik
2011-01-25 14:49 ` Tejun Heo
2011-01-28  7:59   ` Jan Ceuleers
2011-01-25 20:25 ` Linus Torvalds
     [not found]   ` <20110126124954.GC24527@laptop>
2011-01-26 23:07     ` Luck, Tony
     [not found]       ` <20110126231620.GA14807@redhat.com>
     [not found]         ` <987664A83D2D224EAE907B061CE93D53019438EB02@orsmsx505.amr.corp.intel.com>
     [not found]           ` <20110126233033.GB14807@redhat.com>
     [not found]             ` <987664A83D2D224EAE907B061CE93D53019438EBB6@orsmsx505.amr.corp.intel.com>
     [not found]               ` <4D40F7F1.3020509@zytor.com>
     [not found]                 ` <20110127120039.GD20279@elte.hu>
2011-01-27 18:35                   ` Luck, Tony
     [not found]                   ` <4D4197CB.9070201@zytor.com>
     [not found]                     ` <20110127162429.GB26437@elte.hu>
2011-01-27 18:56                       ` Luck, Tony
     [not found]     ` <20110127021338.GA20334@redhat.com>
     [not found]       ` <4D40F81E.1030009@zytor.com>
     [not found]         ` <20110127052639.GA16289@laptop>
     [not found]           ` <m1sjweyeax.fsf@fess.ebiederm.org>
2011-02-02 11:13             ` Ahmed S. Darwish

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