Re: [Xen-users] Using Inter Processor Interrupt (IPI) under xen 4.4.1

[Eli240188 <eli240188@xxxxxxxxx>]

Thanks for your informative reply.

I will check it out.

×-22 ×××× 2015, ×××× 16:16, Ian Campbell <ian.campbell@xxxxxxxxxx> ×××/×:

On Wed, 2015-04-22 at 13:28 +0300, ××× ×××××××× wrote:

Hi All,

Im not really sure if its the right mailing list.but i will give it a

try.

I'm trying to check how much time it takes to initialize virtual CPU

cache , for my B.Sc final project.

None of this is really specific to Xen, it's just Linux kernel stuff.
I'd suggest asking your B.Sc advisor to point you towards some Linux
kernel development resources.

[...]

ffffffff8100f800 t xen_smp_cpus_done

ffffffff8100f810 t xen_smp_send_reschedule

ffffffff8100f830 t xen_send_IPI_mask

ffffffff8100f890 t xen_smp_send_call_function_single_ipi

ffffffff8100f8d0 t xen_smp_send_call_function_ipi

ffffffff8100f930 t xen_cpu_die

ffffffff8100fa40 t xen_cpu_disable

Im not sure i can use them, and the bigger problem i don't how and

what library's i should include.

These are kernel symbols, they can only be used from kernel modules
(assuming they are exported), not from applications and/or libraries.

AFAIK Linux has some generic interfaces (which will map to those above
when running under Xen), you almost certainly want to be using those and
not the Xen specific ones. Try looking for similar functions without the
xen_ prefix.

Moreover i tried adding kernel module to this VM

but /lib/modules/2.6.32-73-server/ has no build folder so i cant inmod

my kernel module.

You should look for a development package matching your kernel.

Ian.

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