From: Cyrill Gorcunov <gorcunov@gmail.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Rakib Mullick <rakib.mullick@gmail.com>,
Ingo Molnar <mingo@elte.hu>,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
Yinghai Lu <yhlu.kernel@gmail.com>,
"Maciej W. Rozycki" <macro@linux-mips.org>
Subject: Re: [PATCH] x86,APIC: Detect lapic_is_integrated() once - use on and on.
Date: Sat, 23 May 2009 00:21:54 +0400 [thread overview]
Message-ID: <20090522202154.GG5354@lenovo> (raw)
In-Reply-To: <4A170713.402@zytor.com>
[H. Peter Anvin - Fri, May 22, 2009 at 01:12:03PM -0700]
| Cyrill Gorcunov wrote:
| >
| > Hi Rakib,
| >
| > actually this change could be dangerous. I don't
| > remember if I saw mixed configuration at all but
| > I would not be that sure that we will never met it.
| >
| > Peter? Ingo? Yinghai? Maciej?
| >
|
| That seems unlikely in the extreme. To the best of my knowledge, only
| 486s ever used the external APICs.
|
| -hpa
|
It was about a half year ago (need googling to be precise :)
but I was reported about Xeon processor which identify itself
as having "external" apic. So I hardly believe if real external
device with ICC bus were used.
-- Cyrill
next prev parent reply other threads:[~2009-05-22 20:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-22 13:31 [PATCH] x86,APIC: Detect lapic_is_integrated() once - use on and on Rakib Mullick
2009-05-22 20:02 ` Cyrill Gorcunov
2009-05-22 20:12 ` H. Peter Anvin
2009-05-22 20:21 ` Cyrill Gorcunov [this message]
2009-05-22 20:23 ` H. Peter Anvin
2009-05-22 20:30 ` Cyrill Gorcunov
2009-05-22 20:35 ` Cyrill Gorcunov
2009-05-22 20:59 ` H. Peter Anvin
2009-05-22 22:18 ` Maciej W. Rozycki
2009-05-23 13:07 ` Cyrill Gorcunov
2009-05-22 20:33 ` Thomas Gleixner
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