From: Jeroen Dekkers <jeroen@vrijschrift.org>
To: The development of GRUB 2 <grub-devel@gnu.org>
Subject: Re: 64 Bit Support?
Date: Sun, 17 Jun 2007 23:06:03 +0200 [thread overview]
Message-ID: <87lkeigukk.wl@dekkers.cx> (raw)
In-Reply-To: <3B66B7F1-5535-486E-8AEE-3920F6C9E1A6@gmail.com>
At Sun, 17 Jun 2007 12:29:43 -0700,
Andrei E. Warkentin wrote:
> Heh, UEFI x64 runs in long mode, and it has no problems doing things
> like that. To linearly map the first 4GB you need a whole of 24KB
> worth of page tables (using 2m pages). And the code to enter long
> mode directly from RM is pretty trivial. RM->16PM->LM.
But UEFI doesn't need to be booted by a BIOS. We actually want to
install the GRUB2 core into the gap that exists between the partition
table and the first partition that usually starts on the second
head. This gap is 62 sectors, or 31KB. Just a bit more than your
page tables.
Jeroen Dekkers
prev parent reply other threads:[~2007-06-17 21:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070616160553.C62C1BFD7@mail.lfs-matrix.net>
2007-06-17 23:11 ` 64 Bit Support? David Broadfoot
2007-06-17 0:16 ` Jeroen Dekkers
2007-06-17 9:26 ` Robert Millan
2007-06-17 9:37 ` Stefan Reinauer
2007-06-17 11:03 ` Jeroen Dekkers
2007-06-17 11:24 ` Stefan Reinauer
2007-06-17 17:47 ` Constantine Kousoulos
2007-06-17 19:34 ` Andrei E. Warkentin
2007-06-17 19:29 ` Andrei E. Warkentin
2007-06-17 21:06 ` Jeroen Dekkers [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87lkeigukk.wl@dekkers.cx \
--to=jeroen@vrijschrift.org \
--cc=grub-devel@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.