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snocer
n00b
Joined: 02 Dec 2007
Posts: 6
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 Posted: Sun Dec 02, 2007 11:43 pm Post subject: [Solved]Error in "linux-2.6.20-xen-r6" with enable |
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Hi!
make works fine for kernel-config without PAE enabled. After enabling PAE-Support compile failed with following Error:
| Quote: |
CC arch/i386/kernel/time-xen.o
In file included from /usr/src/linux-2.6.20-xen-r6/arch/i386/kernel/time-xen.c:39:
/usr/src/linux-2.6.20-xen-r6/include/linux/interrupt.h: In Funktion »save_flags«:
/usr/src/linux-2.6.20-xen-r6/include/linux/interrupt.h:212: Warnung: Implizite Deklaration der Funktion »raw_local_save_flags«
/usr/src/linux-2.6.20-xen-r6/arch/i386/kernel/time-xen.c: Auf höchster Ebene:
/usr/src/linux-2.6.20-xen-r6/arch/i386/kernel/time-xen.c:1000: Fehler: Redefinition von »raw_safe_halt«
include2/asm/paravirt.h:208: Fehler: Vorherige Definition von »raw_safe_halt« war hier
/usr/src/linux-2.6.20-xen-r6/arch/i386/kernel/time-xen.c:1009: Fehler: Redefinition von »halt«
include2/asm/paravirt.h:213: Fehler: Vorherige Definition von »halt« war hier
make[2]: *** [arch/i386/kernel/time-xen.o] Fehler 1
make[1]: *** [arch/i386/kernel] Fehler 2
make: *** [_all] Fehler 2
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Any Idea whats the Problem or which kernel-config flag I have to set/unset? Or is it a Bug?
Aditional:
I dont know exactly IF i have to set CONFIG_PARAVIRT=y for running XEN with PAE Support. With only enabled CONFIG_HIGHMEM4G=y XEN (with enabled PAE) didnt start the Kernel saying there is no PAE Support in Kernel.
Could anyone hlep me?
Greetings
Snocer
Last edited by snocer on Wed Dec 05, 2007 12:03 pm; edited 1 time in total |
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snocer
n00b
Joined: 02 Dec 2007
Posts: 6
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| Posted: Mon Dec 03, 2007 9:45 am Post subject: Option in Kernel-Config to set for PAE ? |
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Hi!
I found a Bug-Report https://bugs.gentoo.org/show_bug.cgi?id=197071 that seems to be the same Problem.
The current Fix is: | Quote: |
Turn of Paravirtulization support (CONFIG_PARAVIRT), it is not used by Xen in
this version of the kernel. I need to disable that option completely, there is
actually nothing in 2.6.20 that uses it.
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BUT ... if PARAVIRT is not needed for XEN ... What option is needed in kernel-Config to enable PAE Support?
PAE is (correct me if its wrong) "Physical Address Extension" so using the HIGHMEM option should enable it i think. But _ONLY_ HIGHMEM seems not to enable PAE. 
Any Help?
Thanks in advance
Snocer |
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snocer
n00b
Joined: 02 Dec 2007
Posts: 6
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| Posted: Wed Dec 05, 2007 12:12 pm Post subject: [solved] |
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Hi...
It's my poor English i think ... You don't understand me - right 
Problem ist solved.
I found elsewhere that CONFIG_HIGHMEN4G=y should also enable CONFIG_X86_PAE. But in fact, thats wrong for Gentoo kernel source-2.6.20-xen.
Only setting CONFIG_HIGHMEN64G=y enables PAE in kernel.
PARAVIRT is not needed for Xen and therefor disabled.
Thanks for "reading" 
Snocer |
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gerard27
Advocate
Joined: 04 Jan 2004
Posts: 2377
Location: Netherlands
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| Posted: Wed Dec 05, 2007 7:07 pm Post subject: |
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Thanks for posting.
Might prove helpful to me shortly.
I intend to give xen a try.
Gerard.
_________________
To install Gentoo I use sysrescuecd.Based on Gentoo,has firefox to browse Gentoo docs and mc to browse (and edit) files.
The same disk can be used for 32 and 64 bit installs.
You can follow the Handbook verbatim.
http://www.sysresccd.org/Download |
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