From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.62) (envelope-from ) id 1Gxlqk-00023a-PO for garchives@archives.gentoo.org; Fri, 22 Dec 2006 14:58:19 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.8/8.13.8) with SMTP id kBMEt3Jv005271; Fri, 22 Dec 2006 14:55:03 GMT Received: from ender.volumehost.net (adsl-69-154-123-202.dsl.fyvlar.swbell.net [69.154.123.202]) by robin.gentoo.org (8.13.8/8.13.8) with ESMTP id kBMEt1LU010323 for ; Fri, 22 Dec 2006 14:55:02 GMT Received: from localhost (localhost [127.0.0.1]) by ender.volumehost.net (Postfix) with ESMTP id F3C2B14B03 for ; Fri, 22 Dec 2006 14:55:00 +0000 (UTC) X-Virus-Scanned: amavisd-new at volumehost.net Received: from ender.volumehost.net ([127.0.0.1]) by localhost (ender.volumehost.net [127.0.0.1]) (amavisd-new, port 10024) with LMTP id rpAbEMfPuQ3C for ; Fri, 22 Dec 2006 14:54:59 +0000 (UTC) Received: from adsl-69-154-123-205.dsl.fyvlar.swbell.net (adsl-69-154-123-205.dsl.fyvlar.swbell.net [69.154.123.205]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ender.volumehost.net (Postfix) with ESMTP id B2A5F14AB6 for ; Fri, 22 Dec 2006 14:54:59 +0000 (UTC) From: "Boyd Stephen Smith Jr." To: gentoo-amd64@lists.gentoo.org Subject: Re: [gentoo-amd64] Re: Emerging package as both 64 and 32 bit Date: Fri, 22 Dec 2006 08:54:59 -0600 User-Agent: KMail/1.9.5 References: <458B82F1.2080908@gentoo.org> In-Reply-To: <458B82F1.2080908@gentoo.org> X-Eric-Conspiracy: There is no conspiracy Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-amd64@gentoo.org Reply-to: gentoo-amd64@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2235362.VAcYxqN8HI"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200612220854.59448.bss03@volumehost.net> X-Archives-Salt: 9a281474-1344-4a58-a0da-06a7144040b4 X-Archives-Hash: 84c60b0d8f2220c6c9cc1b95b1d17947 --nextPart2235362.VAcYxqN8HI Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Friday 22 December 2006 01:02, Mike Doty wrote=20 about 'Re: [gentoo-amd64] Re: Emerging package as both 64 and 32 bit': > Duncan wrote: > > Simon Stelling posted 45866BE0.20905@gentoo.org, > > > > excerpted below, on Mon, 18 Dec 2006 12:22:24 +0200: > >> Neil Bothwick wrote: > >>> What's wrong with the GRUB source package? > >> No problem, but it's 32bit. > > Indeed... for backward compatibility, amd64/x86_64 boots in 32-bit > > mode. Actually, I /believe/ it boots in 16-bit real mode, just like an > > x86, [...] but AFAIK the difference between compiling 16-bit and 32-bit > > code is simply a few compile-time switches, so it uses a standard > > 32-bit toolchain. > You're referring to real mode(16 bit). the BIOS will load the > bootloader in real mode, the bootloader will switch to protected mode(32 > bit) and if you have the right kernel, it will switch to extended > mode(64 bit) Also, it's technically possible for the bootloader to switch into extended= =20 mode before loading the kernel, but not done (in GRUB, at least) for solid= =20 technical reasons. (IIRC, there's some memory mappings that have to be=20 set up before entering extended mode.) =2D-=20 "If there's one thing we've established over the years, it's that the vast majority of our users don't have the slightest clue what's best for them in terms of package stability." =2D- Gentoo Developer Ciaran McCreesh --nextPart2235362.VAcYxqN8HI Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQBFi/HDq72nDbhDXToRAhl2AJ0TMN8LX8lLsQAFLd9EJq/soYzajgCghegk 5qid9z6MFZLDlbNbBuYr9Oo= =hHA4 -----END PGP SIGNATURE----- --nextPart2235362.VAcYxqN8HI-- -- gentoo-amd64@gentoo.org mailing list