Messages in this thread | | | Subject | Re: kernel (64bit) 4GB memory support | From | Rudolf Usselmann <> | Date | Sun, 12 Dec 2004 11:12:15 +0700 |
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On Sun, 2004-12-12 at 00:47, Jeff Garzik wrote: ... > All 2.6 kernels work with 64bit and >4GB memory, on my configurations > (x86-64, ia64, and alpha). > > It is a mistake to assume that all 64bit and/or >4GB is broken. > > > (Tiger K8W, dual Opteron) > > Ok, we finally get a bit of useful information. > > Are you CERTAIN that you are booting a 64bit kernel? > Is your memory PC1600, PC2100, or PC2700? > Is your memory installed in matched pairs? > Is all your memory ECC registered? > Is your BIOS at the latest version?
Hi Jeff,
"yes" to all of the above. I am 100% certain this is not a hardware problem. I have paired simms and with a 32 bit kernel can use the entire 4GB. I also have run memtest86 ...
> Once we get through the hardware issues, now it is time to do a binary > search of 2.6 kernels, to see which one works for you. If no 2.6 > kernels work for you, then give 2.4 kernels a try. > > Jeff
I have previously reported this bug to the list (about a week ago). I am greatfull for every response and am willing to investigate everything.
Previously I was running Fedora Core 2 32BIT with the 2.6.9 kernel and never had problems with 4GB. After finally upgrading to 64 bit I can't use 4GB memory anymore.
# ver_linux
Linux cpu10 2.6.9RU1.1 #11 SMP Sun Dec 5 11:42:18 ICT 2004 x86_64 x86_64 x86_64 GNU/Linux
Gnu C 3.4.2 Gnu make 3.80 binutils 2.15.92.0.2 util-linux 2.12a mount 2.12a module-init-tools 3.1-pre5 e2fsprogs 1.35 reiserfsprogs line reiser4progs line pcmcia-cs 3.2.7 quota-tools 3.12. PPP 2.4.2 nfs-utils 1.0.6 Linux C Library 2.3.3 Dynamic linker (ldd) 2.3.3 Procps 3.2.3 Net-tools 1.60 Kbd 1.12 Sh-utils 5.2.1 Modules Loaded autofs4 nfs lockd sunrpc binfmt_misc dm_mod button battery ac nvidia ipv6 ohci_hcd uhci_hcd ehci_hcd hw_random snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc gameport snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore floppy
The attached boot log shows the kernel panic ....
Kind Regards, rudi
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