Comment 50 for bug 378240

@Boris Derzhavets

Device /dev/xen/evtchn is at the moment loaded by udevd here as well. I have this code back from some previous attempts when it did not work (maybe RELEASE-4.0.0). However the other device mentioned in docs /dev/xen/gntdev is still missing here (Ubuntu 9.10 karmic, kernel compiled with CONFIG_XEN_GNTDEV=y CONFIG_XEN_DEV_EVTCHN=y). I know I could create it manually but I want it as designed. Everything seems to work even without this /dev/xen/gntdev.
I will probably remove this module loading from init.d/xend as soon as devices are actually created by udevd here.

I have no such warnings at the moment. Only this ... I hope it's not dangerous.
root@x0:/var/log/xen# dmesg | grep "Modules linked in" -C5
[ 0.012731] CPU: Processor Core ID: 0
[ 0.012757] Performance Events: AMD PMU driver.
[ 0.012803] ------------[ cut here ]------------
[ 0.012833] WARNING: at arch/x86/xen/enlighten.c:731 xen_apic_write+0x15/0x20()
[ 0.012861] Hardware name: System Product Name
[ 0.012886] Modules linked in:
[ 0.012932] Pid: 0, comm: swapper Not tainted 2.6.32.13-xen #1
[ 0.012958] Call Trace:
[ 0.012986] [<ffffffff8105d658>] warn_slowpath_common+0x78/0xb0
[ 0.013013] [<ffffffff8105d69f>] warn_slowpath_null+0xf/0x20
[ 0.013041] [<ffffffff8100b665>] xen_apic_write+0x15/0x20
[ 0.013068] [<ffffffff810214a1>] perf_events_lapic_init+0x31/0x40
[ 0.013096] [<ffffffff818fd312>] init_hw_perf_events+0x34f/0x3ec
[ 0.013123] [<ffffffff818fce1e>] identify_boot_cpu+0x3c/0x3e
[ 0.013150] [<ffffffff818fcf9f>] check_bugs+0x9/0x2d
[ 0.013177] [<ffffffff818f4d7e>] start_kernel+0x3e3/0x3f9
[ 0.013204] [<ffffffff818f433a>] x86_64_start_reservations+0x125/0x129
[ 0.013231] [<ffffffff818f81a1>] xen_start_kernel+0x6a1/0x6a8
[ 0.013262] ---[ end trace a7919e7f17c0a725 ]---