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1<?xml version="1.0" encoding="UTF-8"?> 1<?xml version="1.0" encoding="UTF-8"?>
2<!DOCTYPE guide SYSTEM "/dtd/guide.dtd"> 2<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
3<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-amd64-faq.xml,v 1.16 2006/06/17 07:04:43 fox2mike Exp $ --> 3<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-amd64-faq.xml,v 1.17 2006/09/18 06:53:41 nightmorph Exp $ -->
4 4
5<guide link="/doc/en/gentoo-amd64-faq.xml"> 5<guide link="/doc/en/gentoo-amd64-faq.xml">
6<title>Gentoo Linux/AMD64 Frequently Asked Questions</title> 6<title>Gentoo Linux/AMD64 Frequently Asked Questions</title>
7 7
8<author title="Editor"> 8<author title="Editor">
36<body> 36<body>
37 37
38<p> 38<p>
39This document contains the most commonly asked questions about Gentoo/AMD64. We 39This document contains the most commonly asked questions about Gentoo/AMD64. We
40intend to help and provide useful information about Gentoo/AMD64. Some of these 40intend to help and provide useful information about Gentoo/AMD64. Some of these
41questions can be found in forums, irc, or mailing lists. If you have suggestions 41questions can be found in forums, IRC, or mailing lists. If you have suggestions
42or questions about this FAQ, you are welcome to send an e-mail to the authors 42or questions about this FAQ, you are welcome to send an e-mail to the authors
43explaining the problem. 43explaining the problem.
44</p> 44</p>
45 45
46</body> 46</body>
51 51
52<ul> 52<ul>
53 <li><uri link="#cflags">What CFLAGS should I use for AMD64/EM64T?</uri></li> 53 <li><uri link="#cflags">What CFLAGS should I use for AMD64/EM64T?</uri></li>
54 <li><uri link="#kernel">What kernel should I use?</uri></li> 54 <li><uri link="#kernel">What kernel should I use?</uri></li>
55 <li> 55 <li>
56 <uri link="#perfup">Will I have a performance upgrade if I use 64-bit 56 <uri link="#perfup">Will I have a performance upgrade if I use a 64-bit
57 system instead of 32-bit?</uri> 57 system instead of 32-bit?</uri>
58 </li> 58 </li>
59 <li> 59 <li>
60 <uri link="#emul32">How do I get 32-bit emulation for my system?</uri> 60 <uri link="#emul32">How do I get 32-bit emulation for my system?</uri>
61 </li> 61 </li>
77<ul> 77<ul>
78 <li> 78 <li>
79 <uri link="#videobindrivers">Will my binary NVIDIA/ATI drivers work?</uri> 79 <uri link="#videobindrivers">Will my binary NVIDIA/ATI drivers work?</uri>
80 </li> 80 </li>
81 <li> 81 <li>
82 <uri link="#coolnquiet">How do I use Cool'n'Quiet/Powernow features?</uri> 82 <uri link="#coolnquiet">How do I use Cool'n'Quiet/PowerNow features?</uri>
83 </li> 83 </li>
84</ul> 84</ul>
85 85
86</body> 86</body>
87</section> 87</section>
138<body> 138<body>
139 139
140<p> 140<p>
141You should use simple <c>CFLAGS</c> to avoid future problems with your system. 141You should use simple <c>CFLAGS</c> to avoid future problems with your system.
142For example, you should use <c>CFLAGS="-march=k8 -O2 -pipe"</c> for Athlon64 or 142For example, you should use <c>CFLAGS="-march=k8 -O2 -pipe"</c> for Athlon64 or
143Opteron and <c>CFLAGS="-march=nocona -O2 -pipe"</c> for a EM64T processor. If 143Opteron and <c>CFLAGS="-march=nocona -O2 -pipe"</c> for an EM64T processor. If
144you plan to use a 32-bit chroot, you should use <c>CFLAGS="-march=athlon-xp 144you plan to use a 32-bit chroot, you should use <c>CFLAGS="-march=athlon-xp -O2
145-O2 -pipe -msse2"</c> for a AMD64 processor; for a EM64T, you should use 145-pipe -msse2"</c> for an AMD64 processor; for an EM64T, you should use
146<c>CFLAGS="-march=pentium4 -O2 -pipe"</c> <e>inside the chroot</e>. 146<c>CFLAGS="-march=pentium4 -O2 -pipe"</c> <e>inside the chroot</e>.
147</p> 147</p>
148 148
149<note> 149<note>
150<c>-march=k8</c> is the same as <c>-march=athlon64</c> and 150<c>-march=k8</c> is the same as <c>-march=athlon64</c> and
178</warn> 178</warn>
179 179
180</body> 180</body>
181</section> 181</section>
182<section id="perfup"> 182<section id="perfup">
183<title>Will I have a performance upgrade if I use 64-bit system instead of 32-bit?</title> 183<title>Will I have a performance upgrade if I use a64-bit system instead of 32-bit?</title>
184<body> 184<body>
185 185
186<p> 186<p>
187That is a difficult question to answer. In some cases, you will experience a 187That is a difficult question to answer. In some cases, you will experience a
188performance improvement, in other cases you will not. For everyday use, there 188performance improvement, in other cases you will not. For everyday use, there
273 273
274<p> 274<p>
275Reiser4 is not available from any kernel offered by the Gentoo Kernel project, 275Reiser4 is not available from any kernel offered by the Gentoo Kernel project,
276thus neither AMD64 team supports it. The answer is no. 276thus neither AMD64 team supports it. The answer is no.
277</p> 277</p>
278
278</body> 279</body>
279</section> 280</section>
280</chapter> 281</chapter>
281 282
282<chapter> 283<chapter>
294</p> 295</p>
295 296
296</body> 297</body>
297</section> 298</section>
298<section id="coolnquiet"> 299<section id="coolnquiet">
299<title>How do I use Cool'n'Quiet/Powernow features?</title> 300<title>How do I use Cool'n'Quiet/PowerNow features?</title>
300<body> 301<body>
301 302
302<p> 303<p>
303You have to compile your kernel with support for these features. You just need 304You have to compile your kernel with support for these features. You just need
304to enable the features below: 305to enable the features below:
305</p> 306</p>
306 307
307<pre caption="Kernel options for Cool'n'Quiet/Powernow"> 308<pre caption="Kernel options for Cool'n'Quiet/PowerNow">
308Power management options ---&gt; 309Power management options ---&gt;
309 [*] Power Management support 310 [*] Power Management support
310CPU Frequency scaling ---&gt; 311CPU Frequency scaling ---&gt;
311 [*] CPU Frequency scaling 312 [*] CPU Frequency scaling
312 [*] CPU frequency table helpers 313 [*] CPU frequency table helpers
344 345
345<p> 346<p>
346Yes. To get Flash working, you need a 32-bit browser like <c>mozilla-bin</c>, 347Yes. To get Flash working, you need a 32-bit browser like <c>mozilla-bin</c>,
347<c>mozilla-firefox-bin</c> or <c>opera</c> because Macromedia doesn't provide a 348<c>mozilla-firefox-bin</c> or <c>opera</c> because Macromedia doesn't provide a
34864-bit version. After emerging the -bin-package of your favorite browser, 34964-bit version. After emerging the -bin-package of your favorite browser,
349install flash by doing <c>emerge netscape-flash</c>. 350install Flash by doing <c>emerge netscape-flash</c>.
350</p> 351</p>
351 352
352</body> 353</body>
353</section> 354</section>
354<section id="OOo"> 355<section id="OOo">
355<title>Can I get OpenOffice.org working?</title> 356<title>Can I get OpenOffice.org working?</title>
356<body> 357<body>
357 358
358<p> 359<p>
359OpenOffice 1.x and 2.0.x do not build on 64-bit systems, so you have to use the 360OpenOffice 1.x and 2.0.x do not build on 64-bit systems, so you have to use the
36032-bit binary version, available in portage as <c>openoffice-bin</c>. 36132-bit binary version, available in Portage as <c>openoffice-bin</c>.
361</p> 362</p>
362 363
363</body> 364</body>
364</section> 365</section>
365<section id="java"> 366<section id="java">

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