From: Matthew Garrett <mjg59@srcf.ucam.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Huang, Ying" <ying.huang@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andi Kleen <ak@suse.de>,
Chandramouli Narayanan <mouli@linux.intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/3] x86_64 EFI runtime service support
Date: Mon, 20 Aug 2007 21:13:44 +0100 [thread overview]
Message-ID: <20070820201344.GA13059@srcf.ucam.org> (raw)
In-Reply-To: <46C9C9C7.8080506@zytor.com>
On Mon, Aug 20, 2007 at 10:05:11AM -0700, H. Peter Anvin wrote:
> Yinghai Lu wrote:
> >
> > someone told me that EFI PEI will be 32 bit ( for mem etc
> > initialization), and after that will be 64 bit, so the Run time
> > service will be 64 bit only, and it will only support 64 bit OS with
> > EFI. and they have another mode to emulate the legacy BIOS to boot
> > 32bit OS.
> >
>
> That seems unlikely for e.g. the existing Macs already in the field.
In which direction? The existing Macs will boot a 32 (or 16) bit OS
using legacy BIOS emulation. I've no idea if their EFI is 32 or 64 bit,
though.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2007-08-20 20:14 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-13 7:30 [PATCH 0/3] x86_64 EFI runtime service support Huang, Ying
2007-08-15 22:42 ` Andrew Morton
2007-08-16 7:51 ` Huang, Ying
2007-08-16 14:11 ` Andi Kleen
2007-08-17 1:25 ` Huang, Ying
2007-08-17 16:11 ` H. Peter Anvin
2007-08-20 3:20 ` Huang, Ying
2007-08-20 17:12 ` H. Peter Anvin
2007-08-21 1:44 ` Huang, Ying
2007-08-21 3:54 ` H. Peter Anvin
2007-08-21 4:53 ` Huang, Ying
2007-08-21 11:33 ` Andi Kleen
2007-08-21 10:41 ` H. Peter Anvin
2007-08-21 11:45 ` Andi Kleen
2007-08-21 23:58 ` Yinghai Lu
2007-08-22 1:22 ` Andi Kleen
2007-08-22 6:43 ` Yinghai Lu
2007-08-22 11:11 ` Andi Kleen
2007-08-22 14:23 ` huang ying
2007-08-22 16:28 ` H. Peter Anvin
2007-08-23 2:21 ` Huang, Ying
2007-08-23 2:46 ` H. Peter Anvin
2007-08-22 14:41 ` Eric W. Biederman
2007-08-22 16:44 ` H. Peter Anvin
2007-08-22 7:20 ` Yinghai Lu
2007-08-15 23:16 ` Andrew Morton
2007-08-15 23:22 ` H. Peter Anvin
2007-08-16 8:00 ` Huang, Ying
2007-08-16 16:09 ` H. Peter Anvin
2007-08-19 22:27 ` Eric W. Biederman
2007-08-19 22:25 ` Eric W. Biederman
2007-08-19 23:46 ` Yinghai Lu
2007-08-20 17:05 ` H. Peter Anvin
2007-08-20 17:20 ` San Mehat
2007-08-20 20:13 ` Matthew Garrett [this message]
2007-08-20 5:14 ` Huang, Ying
2007-08-16 7:52 ` Huang, Ying
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