From: "H. Peter Anvin" <hpa@kernel.org>
To: Bernhard Walle <bwalle@suse.de>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org, kexec@lists.infradead.org
Subject: Re: [PATCH] Always use 64 bit addresses for the firmware memory map
Date: Wed, 12 Nov 2008 15:35:49 -0800 [thread overview]
Message-ID: <491B6855.1080609@kernel.org> (raw)
In-Reply-To: <20081112221106.5d9d7801@kopernikus.site>
Bernhard Walle wrote:
> * H. Peter Anvin [2008-11-12 11:59]:
>> I want to make sure, though, that we don't just end up pushing the
>> truncation further down in the code.
>
> Well, I think that interface should export the BIOS memmap as provided.
> Since E820 does provide 64 bit addresses, that should get exported.
>
> It should even possible to kexec a PAE kernel from a non PAE kernel ...
> I didn't test, but it could work. But only if the E820 map is correctly
> written in the zero page, which is only the case if we get it correctly.
>
That's fine, but we do have to check that we don't truncate elsewhere.
-hpa
next prev parent reply other threads:[~2008-11-12 23:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-12 19:44 [PATCH] Always use 64 bit addresses for the firmware memory map Bernhard Walle
2008-11-12 19:59 ` H. Peter Anvin
2008-11-12 21:11 ` Bernhard Walle
2008-11-12 23:35 ` H. Peter Anvin [this message]
2008-11-13 8:04 ` Bernhard Walle
2008-11-12 20:16 ` Jeremy Fitzhardinge
2008-11-12 23:34 ` H. Peter Anvin
2008-11-13 0:32 ` Jeremy Fitzhardinge
2008-11-13 1:16 ` H. Peter Anvin
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