[gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
Due to issues with some of the software I am wanting to run, when it is run under the AMD64 bit version of Gentoo (one of which is Blender, which I hope will be properly stable soon), I am planning to run x86 Gentoo (With the i686 stage3) on an AMD64 processor. My question is this, If I enabel 64 bit support in the kernel, is that likely to cause any issues with running the 32bit compiled software? V/r RP3(SW) Burling Religious Ministries x4502
Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
On Friday 25 May 2007 02:12:49 [EMAIL PROTECTED] wrote: My question is this, If I enabel 64 bit support in the kernel, You mean run a 64-bit kernel with 32-bit support. There's no such thing as a 32-bit kernel with 64-bit support (at least not in x86-land). is that likely to cause any issues with running the 32bit compiled software? No, it won't, but it's a little bit tricky to set up. You'll want to use an i686 stage3, and set ARCH to x86 or ~x86. Then, you'll have to install a cross compiler (and binutils, IIRC) and cross-compile your kernel. You could always just use a 32-bit kernel. Do you have 3G or more RAM or need to run 64-bit programs? -- Boyd Stephen Smith Jr. ,= ,-_-. =. [EMAIL PROTECTED] ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.org/ \_/ pgp0Ettis9NAS.pgp Description: PGP signature
RE: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
-Original Message- From: Boyd Stephen Smith Jr. [mailto:[EMAIL PROTECTED] Sent: Friday, May 25, 2007 5:07 PM To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo. On Friday 25 May 2007 02:12:49 [EMAIL PROTECTED] wrote: My question is this, If I enabel 64 bit support in the kernel, You mean run a 64-bit kernel with 32-bit support. There's no such thing as a 32-bit kernel with 64-bit support (at least not in x86-land). is that likely to cause any issues with running the 32bit compiled software? No, it won't, but it's a little bit tricky to set up. You'll want to use an i686 stage3, and set ARCH to x86 or ~x86. Then, you'll have to install a cross compiler (and binutils, IIRC) and cross-compile your kernel. You could always just use a 32-bit kernel. Do you have 3G or more RAM or need to run 64-bit programs? So, unless I need the upper memory support, it may be better for me to just not click the flag for 64bit memory support, and move on? This is on a laptop, and it is not a critical system (i.e. it is not going to require that I get those last few dredges of CPU time out of the system). The main things it will be used for until I build my next system is dataprocessing, and Pencil and Paper gaming. I plan to install a couple graphics related apps to mess with and practice with as well. :P I'm not exactly the average user, but I will be using it for average user level work, so it doesn't HAVE to have 64 bit support. :P From what I understand, the processor handles 32 bit emulation just fine. (It was running Windows XP fine until a runin with the emphamous Gentoo GTK installer.) :P I'm not blaming the software though. The Walkthrough, and the readme both warn that it is experimental. ^^;; Then there is the fact that I had just butted a 700MB CD, that loaded a compressed file system into 512MB of ram, and told it to load a GUI, and a GUI driven install system. *shrugs* Live and learn, and kick yourself when you do something stupid. :P ^_^ -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
On Friday 25 May 2007 04:09:00 [EMAIL PROTECTED] wrote: So, unless I need the upper memory support, it may be better for me to just not click the flag for 64bit memory support, and move on? IIRC, that's for PAE, which you definitely shouldn't use unless you have 4G of RAM or greater. Ticking that box doesn't make your kernel 64-bit though, anymore than supporting 64-bit file offsets makes a kernel 64-bit. -- Boyd Stephen Smith Jr. ,= ,-_-. =. [EMAIL PROTECTED] ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.org/ \_/ pgpD5BreX3tMd.pgp Description: PGP signature
RE: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
-Original Message- From: Boyd Stephen Smith Jr. [mailto:[EMAIL PROTECTED] Sent: Friday, May 25, 2007 6:28 PM To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo. On Friday 25 May 2007 04:09:00 [EMAIL PROTECTED] wrote: So, unless I need the upper memory support, it may be better for me to just not click the flag for 64bit memory support, and move on? IIRC, that's for PAE, which you definitely shouldn't use unless you have 4G of RAM or greater. Ticking that box doesn't make your kernel 64-bit though, anymore than supporting 64-bit file offsets makes a kernel 64-bit. What makes the difference between a 64 bit kernel, and a 32 bit kernel? -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
On Friday 25 May 2007 04:53:26 [EMAIL PROTECTED] wrote: What makes the difference between a 64 bit kernel, and a 32 bit kernel? Use of 64-bit machine code [*], particularly instructions that make use of 64-bit native[**] registers[***]. * Defining this is more difficult, since that does not mean instruction requiring 64-bits to represent as many architectures have variable length instructions. ** Native is a difficult term to define, but I'm explicitly excluding the floating-point registers that have been 64-bit or 80-bit from my vague notion of native *** I guess this makes the Cell processor 128-bit? BTW, if the term register doesn't mean anything to you it's the fastest memory in your computer, closer to the ALU (etc.) than L1 cache, very small and expensive that are addressed differently than all other memory. -- Boyd Stephen Smith Jr. ,= ,-_-. =. [EMAIL PROTECTED] ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.org/ \_/ pgpSnyjmncIjE.pgp Description: PGP signature
Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
What makes the difference between a 64 bit kernel, and a 32 bit kernel? Use of 64-bit machine code [*], particularly instructions that make use of 64-bit native[**] registers[***]. Is there any slowdown for the 64-bit set-up when it has to run 32-bit software? Aside from not having the 64-bit Flash for Firefox, are most popular packages in Gentoo portage 64-bit compatible? -- [EMAIL PROTECTED] mailing list
RE: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
-Original Message- From: Denis [mailto:[EMAIL PROTECTED] Sent: Friday, May 25, 2007 9:32 PM To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo. What makes the difference between a 64 bit kernel, and a 32 bit kernel? Use of 64-bit machine code [*], particularly instructions that make use of 64-bit native[**] registers[***]. Is there any slowdown for the 64-bit set-up when it has to run 32-bit software? Aside from not having the 64-bit Flash for Firefox, are most popular packages in Gentoo portage 64-bit compatible? -- A lot of the AMD64 packages are masked as unstable. There are a lot of stable packages, but there are enough unstable ones to be a pain. When things are masked, there is a reason. For instance, the reason that Blender is masked, is because it does messed up things to the save files in the AMD64 version. With any luck, by the time I build my next real machine, many of the issues will be resolved. :P AMD64 is a popular architecture, so it has a lot of people stomping bugs. ^_^ -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
Am Freitag 25 Mai 2007 14:31 schrieb Denis: What makes the difference between a 64 bit kernel, and a 32 bit kernel? Use of 64-bit machine code [*], particularly instructions that make use of 64-bit native[**] registers[***]. Is there any slowdown for the 64-bit set-up when it has to run 32-bit software? Aside from not having the 64-bit Flash for Firefox, are most popular packages in Gentoo portage 64-bit compatible? There is no additional slow down for AMD64 / EM64T since it's (simplified) just a normal 86 with some extra registers and instructions to handle them.* There are some annoyances (for example Google Earth doesn't start at the moment) but I don't miss anything else. And concerning flash: There are ways to work around it (somewhere in the wiki, look for an AMD64-Howto). * simplified pgpqC9Dpd2PEq.pgp Description: PGP signature
RE: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
-Original Message- From: Peter Alfredsen [mailto:[EMAIL PROTECTED] Sent: Friday, May 25, 2007 10:55 PM To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo. On Friday 25 May 2007, [EMAIL PROTECTED] wrote: For instance, the reason that Blender is masked, is because it does messed up things to the save files in the AMD64 version. http://www.blender.org/development/release-logs/blender-244/64-bits-supp ort/ ^Not anymore. Has this migrated it's way to the portage tree yet? I am not in a position to check. ^^;; -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
On Friday 25 May 2007, [EMAIL PROTECTED] wrote: For instance, the reason that Blender is masked, is because it does messed up things to the save files in the AMD64 version. http://www.blender.org/development/release-logs/blender-244/64-bits-support/ ^Not anymore. -- /PA -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
http://www.blender.org/development/release-logs/blender-244/64-bits-supp ort/ ^Not anymore. Has this migrated it's way to the portage tree yet? I am not in a position to check. ^^;; Yes. -- [EMAIL PROTECTED] mailing list
