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Yinghai Lu 087d7e56de x86: Fix MSI-X initialization by using online_mask for x2apic target_cpus 
found a system where x2apic reports an MSI-X irq initialization
failure:

[  302.859446] igbvf 0000:81:10.4: enabling device (0000 -> 0002)
[  302.874369] igbvf 0000:81:10.4: using 64bit DMA mask
[  302.879023] igbvf 0000:81:10.4: using 64bit consistent DMA mask
[  302.894386] igbvf 0000:81:10.4: enabling bus mastering
[  302.898171] igbvf 0000:81:10.4: setting latency timer to 64
[  302.914050] reserve_memtype added 0xefb08000-0xefb0c000, track uncached-minus, req uncached-minus, ret uncached-minus
[  302.933839] reserve_memtype added 0xefb28000-0xefb29000, track uncached-minus, req uncached-minus, ret uncached-minus
[  302.940367]   alloc irq_desc for 265 on node 4
[  302.956874]   alloc kstat_irqs on node 4
[  302.959452] alloc irq_2_iommu on node 0
[  302.974328] igbvf 0000:81:10.4: irq 265 for MSI/MSI-X
[  302.977778]   alloc irq_desc for 266 on node 4
[  302.980347]   alloc kstat_irqs on node 4
[  302.995312] free_memtype request 0xefb28000-0xefb29000
[  302.998816] igbvf 0000:81:10.4: Failed to initialize MSI-X interrupts.

... it turns out that when trying to enable MSI-X,
__assign_irq_vector(new, cfg_new, apic->target_cpus()) can not
get vector because for x2apic target-cpus returns cpumask_of(0)

Update that to online_mask like xapic.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <4A785AFF.3050902@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-08-08 17:04:58 +02:00
..
boot x86: fix usage of bios intcall() 2009-07-04 12:56:32 -07:00
configs Merge branch 'x86-kbuild-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-10 15:30:41 -07:00
crypto crypto: aes-ni - Remove CRYPTO_TFM_REQ_MAY_SLEEP from fpu template 2009-06-18 19:44:01 +08:00
ia32 Merge branch 'core/signal' into perfcounters/core 2009-04-30 21:16:49 +02:00
include/asm Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-08-04 15:28:59 -07:00
kernel x86: Fix MSI-X initialization by using online_mask for x2apic target_cpus 2009-08-08 17:04:58 +02:00
kvm KVM: shut up uninit compiler warning in paging_tmpl.h 2009-06-28 14:10:32 +03:00
lguest lguest: update commentry 2009-07-30 16:03:46 +09:30
lib x86, msr: execute on the correct CPU subset 2009-08-03 14:48:13 -07:00
math-emu Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2 2009-03-27 17:28:43 +01:00
mm Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-08-04 15:28:59 -07:00
oprofile x86/oprofile: rename kernel parameter for architectural perfmon to arch_perfmon 2009-07-10 05:22:50 +02:00
pci x86/pci: insert ioapic resource before assigning unassigned resources 2009-07-10 13:03:14 -07:00
power x86: Fix resume from suspend when CONFIG_CC_STACKPROTECTOR 2009-07-08 13:20:13 +02:00
vdso gcov: enable GCOV_PROFILE_ALL for x86_64 2009-06-18 13:03:58 -07:00
video
xen Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-10 16:16:27 -07:00
Kbuild x86: standardize Kbuild rules 2009-04-16 18:09:02 +02:00
Kconfig intel-iommu: Restore DMAR_BROKEN_GFX_WA option for broken graphics drivers 2009-07-04 10:59:46 +01:00
Kconfig.cpu Revert "x86, bts: reenable ptrace branch trace support" 2009-06-11 00:32:00 +02:00
Kconfig.debug kmemcheck: make kconfig accessible for other architectures 2009-06-15 15:49:17 +02:00
Makefile kmemcheck: add the kmemcheck core 2009-06-13 15:37:30 +02:00
Makefile_32.cpu