From: Ingo Molnar <mingo@elte.hu>
To: "Kevin O'Connor" <kevin@koconnor.net>
Cc: Yinghai Lu <yinghai@kernel.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Stefan Reinauer <stepan@coresystems.de>,
linux-kernel@vger.kernel.org, coreboot@coreboot.org,
Jaswinder Singh Rajput <jaswinder@infradead.org>
Subject: Re: MPTable can not be high-memory on Linux
Date: Sun, 22 Feb 2009 23:58:47 +0100 [thread overview]
Message-ID: <20090222225847.GB1649@elte.hu> (raw)
In-Reply-To: <20090222223226.GA3346@morn.localdomain>
* Kevin O'Connor <kevin@koconnor.net> wrote:
> On Sun, Feb 22, 2009 at 01:33:35PM -0800, Yinghai Lu wrote:
> [...]
> > >>> BIOS-e820: 0000000000090000 - 0000000000100000 (reserved)
> > >>> BIOS-e820: 0000000000100000 - 000000003f7f0000 (usable)
> > >>> BIOS-e820: 000000003f7f0000 - 0000000040000000 (reserved)
> [...]
> > >>> found SMP MP-table at [c00f9fc0] 000f9fc0
> [...]
> >
> > that should work for a long time.
> >
> > 0xf9fc0 < 1M is quite < max_low_pfn, so wonder why bootmem could panic.
>
> On this machine the mptable "floating" structure is at
> 0xf9fc0. It points to the rest of the table which is in the
> 0x3f7f0000 area.
>
> Note, that this is on a Coreboot+SeaBIOS machine - so we can
> change the bios. However, the mptable spec does allow for
> part of the table to be high memory.
yes, and i'd prefer if it worked fine even if it's that high.
Ingo
next prev parent reply other threads:[~2009-02-22 22:59 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <499DB40C.1060205@coresystems.de>
[not found] ` <499DB480.1000909@coresystems.de>
[not found] ` <499DB6D8.5040706@coresystems.de>
[not found] ` <499DBDA0.2010606@coresystems.de>
[not found] ` <499DCE79.8020809@coresystems.de>
2009-02-22 15:25 ` Kevin O'Connor
2009-02-22 17:06 ` Rafael J. Wysocki
2009-02-22 21:33 ` Yinghai Lu
2009-02-22 22:32 ` Kevin O'Connor
2009-02-22 22:58 ` Ingo Molnar [this message]
2009-02-23 6:14 ` Yinghai Lu
2009-02-23 6:42 ` Ingo Molnar
2009-02-28 23:41 ` Kevin O'Connor
2009-03-01 3:10 ` Yinghai Lu
2009-03-01 18:04 ` Kevin O'Connor
2009-03-02 3:23 ` [PATCH] x86: ioremap mptable -v2 Yinghai Lu
2009-03-02 10:18 ` Ingo Molnar
2009-03-02 10:19 ` Ingo Molnar
2009-03-02 20:07 ` Yinghai Lu
2009-03-02 20:29 ` Ingo Molnar
2009-03-02 20:46 ` Yinghai Lu
2009-03-02 20:57 ` Ingo Molnar
2009-02-22 17:53 ` MPTable can not be high-memory on Linux Andi Kleen
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