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Olivier Boukili

2007-Dec-27 00:51 UTC

[Xen-users] Problem compiling with vSMP cpu architecture support

hello,

I''ve been having trouble enabling the scaleMP vSMP architecture support
(my cpu is an intel core 2 duo "conroe" e6750) with a xen-patched
linux
kernel.
Everytime I compile the kernel, gcc complains about smp_processor_id()
being undeclared (and thus, ultimately fail when linking).
Enabling PC-compatible subarch type solves it.

here''s the fail log:
>In file included from include/linux/irqflags.h:47,
>                 from include/asm/system.h:266,
>                 from include/linux/spinlock.h:58,
>                 from include/linux/module.h:10,
>                 from init/version.c:11:
>include/asm/mach-xen/asm/irqflags.h: In function
''raw_local_irq_disable'':
>include/asm/mach-xen/asm/irqflags.h:43: warning: implicit declaration
of function ''smp_processor_id''>  LD      init/built-in.o
>  LD      .tmp_vmlinux1
>arch/x86_64/kernel/built-in.o: In function
`alternative_instructions'':
>(.init.text+0x19e0): undefined reference to `smp_processor_id''
>arch/x86_64/kernel/built-in.o: In function
`alternative_instructions'':
>(.init.text+0x19f9): undefined reference to `smp_processor_id''
>arch/x86_64/kernel/built-in.o: In function `check_nmi_watchdog'':
>(.init.text+0x2a25): undefined reference to `smp_processor_id''
>arch/x86_64/kernel/built-in.o: In function `check_nmi_watchdog'':
>(.init.text+0x2a3f): undefined reference to `smp_processor_id''
>arch/x86_64/kernel/built-in.o: In function `nmi_cpu_busy'':
>nmi.c:(.init.text+0x2bc3): undefined reference to
`smp_processor_id''
>arch/x86_64/kernel/built-in.o:nmi.c:(.init.text+0x2bdd): more undefined
references to >`smp_processor_id'' follow>make: *** [.tmp_vmlinux1] Error 1
>zsh: exit 2     make 
I tried with vanilla kernels 2.6.20 and 2.6.22-1, xen-patched (as well
as with the gentoo xen-sources 2.6.20-xen-r6 ebuild) but to no avail.
Googling a little led me to this article:
http://lists.xensource.com/archives/html/xen-ia64-devel/2005-12/msg00164.html
but I''m afraid I don"t have the brains to fully understand it.

Any help/guidelines would be appreciated, thanks,

-Oliver


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rargh

2007-Dec-27 01:07 UTC

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[Xen-users] Problem compiling with vSMP cpu architecture support

(hoping my first email wasn''t successfully sent, disregard it if it
was)

hello,

I''ve been having trouble enabling the scaleMP vSMP architecture support
(my cpu is an intel core 2 duo "conroe" e6750) with a xen-patched
linux
kernel.
Everytime I compile the kernel, gcc complains about smp_processor_id()
being undeclared (and thus, ultimately fail when linking).
Enabling PC-compatible subarch type solves it.
here''s the fail log:


In file included from include/linux/irqflags.h:47,
                 from include/asm/system.h:266,
                 from include/linux/spinlock.h:58,
                 from include/linux/module.h:10,
                 from init/version.c:11:
include/asm/mach-xen/asm/irqflags.h: In function
''raw_local_irq_disable'':
include/asm/mach-xen/asm/irqflags.h:43: warning: implicit declaration of
function ''smp_processor_id''
  LD      init/built-in.o
  LD      .tmp_vmlinux1
arch/x86_64/kernel/built-in.o: In function `alternative_instructions'':
(.init.text+0x19e0): undefined reference to `smp_processor_id''
arch/x86_64/kernel/built-in.o: In function `alternative_instructions'':
(.init.text+0x19f9): undefined reference to `smp_processor_id''
arch/x86_64/kernel/built-in.o: In function `check_nmi_watchdog'':
(.init.text+0x2a25): undefined reference to `smp_processor_id''
arch/x86_64/kernel/built-in.o: In function `check_nmi_watchdog'':
(.init.text+0x2a3f): undefined reference to `smp_processor_id''
arch/x86_64/kernel/built-in.o: In function `nmi_cpu_busy'':
nmi.c:(.init.text+0x2bc3): undefined reference to `smp_processor_id''
arch/x86_64/kernel/built-in.o:nmi.c:(.init.text+0x2bdd): more undefined
references to `smp_processor_id'' follow
make: *** [.tmp_vmlinux1] Error 1
zsh: exit 2     make



I tried with vanilla kernels 2.6.20 and 2.6.22-1, xen-patched (as well
as with the gentoo xen-sources 2.6.20-xen-r6 ebuild) but to no avail.

Any help/guidelines would be appreciated, thanks,

-Oliver



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Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Mark Williamson

2008-Jan-04 17:42 UTC

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Re: [Xen-users] Problem compiling with vSMP cpu architecture support

I''m not familiar with ScaleMP / vSMP but it seems like it''s a
different
machine type, with a different architecture for large scale SMP systems, 
right?

This sounds like infrastructure that Xen itself would need to support, since 
Xen is responsible for many of the lowlevel details of the underlying system.  
Simply compiling the infrastructure into the guest would not suffice to make 
Xen work right on that architecture.

Furthermore, it looks like the ScaleMP architecture patches are incompatible 
with the Xen patches, which is causing your compile error.  However, given 
there are likely to be deeper problems with this approach I''m not sure
that
getting the compilation to work would solve your problem...

Out of interest, does Xen itself actually boot on this system?

Cheers,
Mark
> hello,
>
> I''ve been having trouble enabling the scaleMP vSMP architecture
support
> (my cpu is an intel core 2 duo "conroe" e6750) with a xen-patched
linux
> kernel.
> Everytime I compile the kernel, gcc complains about smp_processor_id()
> being undeclared (and thus, ultimately fail when linking).
> Enabling PC-compatible subarch type solves it.
> here''s the fail log:
>
>
> In file included from include/linux/irqflags.h:47,
>                  from include/asm/system.h:266,
>                  from include/linux/spinlock.h:58,
>                  from include/linux/module.h:10,
>                  from init/version.c:11:
> include/asm/mach-xen/asm/irqflags.h: In function
''raw_local_irq_disable'':
> include/asm/mach-xen/asm/irqflags.h:43: warning: implicit declaration of
> function ''smp_processor_id''
>   LD      init/built-in.o
>   LD      .tmp_vmlinux1
> arch/x86_64/kernel/built-in.o: In function
`alternative_instructions'':
> (.init.text+0x19e0): undefined reference to `smp_processor_id''
> arch/x86_64/kernel/built-in.o: In function
`alternative_instructions'':
> (.init.text+0x19f9): undefined reference to `smp_processor_id''
> arch/x86_64/kernel/built-in.o: In function `check_nmi_watchdog'':
> (.init.text+0x2a25): undefined reference to `smp_processor_id''
> arch/x86_64/kernel/built-in.o: In function `check_nmi_watchdog'':
> (.init.text+0x2a3f): undefined reference to `smp_processor_id''
> arch/x86_64/kernel/built-in.o: In function `nmi_cpu_busy'':
> nmi.c:(.init.text+0x2bc3): undefined reference to
`smp_processor_id''
> arch/x86_64/kernel/built-in.o:nmi.c:(.init.text+0x2bdd): more undefined
> references to `smp_processor_id'' follow
> make: *** [.tmp_vmlinux1] Error 1
> zsh: exit 2     make
>
>
>
> I tried with vanilla kernels 2.6.20 and 2.6.22-1, xen-patched (as well
> as with the gentoo xen-sources 2.6.20-xen-r6 ebuild) but to no avail.
>
> Any help/guidelines would be appreciated, thanks,
>
> -Oliver
>
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users


-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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rargh

2008-Jan-14 20:06 UTC

head link

Re: [Xen-users] Problem compiling with vSMP cpu architecture support

> I''m not familiar with ScaleMP / vSMP but it seems like
it''s a different
> machine type, with a different architecture for large scale SMP systems, 
> right?
About right, except it also fully supports amd64/em64t.
> This sounds like infrastructure that Xen itself would need to support,
since
> Xen is responsible for many of the lowlevel details of the underlying
system.
> Simply compiling the infrastructure into the guest would not suffice to
make
> Xen work right on that architecture.
Well, guess I''m lucky I still haven''t ordered all those
machines...I''ll
just have to wait then.
> Furthermore, it looks like the ScaleMP architecture patches are
incompatible
> with the Xen patches, which is causing your compile error.  However, given 
> there are likely to be deeper problems with this approach I''m not
sure that
> getting the compilation to work would solve your problem...
> 
> Out of interest, does Xen itself actually boot on this system?

Since vSMP fully supports, in my case, em64t, and since I''ve compiled
the xen kernel for a generic amd64 architecture, yes it does -for a
single machine cluster, infortunately not what I intended in the first
place-.

Thanks for you answers,

-Oliver.

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Xen users - Dec 2007 - Problem compiling with vSMP cpu architecture support

[Xen-users] Problem compiling with vSMP cpu architecture support

[Xen-users] Problem compiling with vSMP cpu architecture support

Re: [Xen-users] Problem compiling with vSMP cpu architecture support

Re: [Xen-users] Problem compiling with vSMP cpu architecture support