-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 El 2007-07-04 a las 14:28 +0200, Carlos E. R. escribió:
Subject: Re: [opensuse] Kernel only see 3 of 4GB
a primeros de junio.
Por ejemplo, éste: ] Date: Fri, 8 Jun 2007 17:18:53 +0200 ] From: Philipp Thomas ] Subject: Re: [opensuse] Kernel only see 3 of 4GB ] ] * Kai Ponte (kai@) [20070604 16:16]: ] ] > Turns out, the motherboard on these laptops (which may be similar to ] > yours) only can address something like 3.2G. ] ] Folks, how many times does this need to be repeated? The BIOS *has* to ] reserve some address space below 4 GiB for I/O puposes, e.g. 32 bit PCI ] devices. RAM in that range is not accessable. Therefore some BIOSs offer ] theoption to remap that RAM to above the 4GB threshold. In order to ] access thisremapped RAM, you either need a 64bit kernel (if you're using ] a processorthat supports AMD64/EM64T) or a 32bit kernel with PAE enabled ] (i.e.kernel-bigsmp). ] ] Philipp Es lo que algunas bios llaman "memory hole" y tienen una opción para remapearla. Pero muchas placas no pueden, sobre todo en portátiles: y la gente se da cuenta ahora que la memoria es "barata" y el vista necesita dos gigas para ir "decente", y piensan en comprar cuatro para volar. Y una vez remapeada, el kernel tiene que estar preparado para poder accesarla (tanto en cpus de 32 como de 64 bits). - -- Saludos Carlos E.R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Made with pgp4pine 1.76 iD8DBQFGi5QYtTMYHG2NR9URAkwfAJ0XZbzH09mtWAV/5P6fW+ShfFHCXwCeICD2 NhCkGxpzIUQ2HrGVieRsEL4= =9e3v -----END PGP SIGNATURE-----