x86/irq: mark NUMA_MIGRATE_IRQ_DESC broken
authorYinghai Lu <yinghai@kernel.org>
Thu, 16 Apr 2009 01:39:13 +0000 (18:39 -0700)
committerIngo Molnar <mingo@elte.hu>
Fri, 17 Apr 2009 01:20:01 +0000 (03:20 +0200)
commitca713c2ab0eea3458962983e4a7e13430ea479b8
tree4bd77472e09216dcb0911efcdf1c5e8ed6ab6748
parent6ec3cfeca04622e3d80c9270191cd7f5f88214af
x86/irq: mark NUMA_MIGRATE_IRQ_DESC broken

It causes crash on system with lots of cards with MSI-X
when irq_balancer enabled...

The patches fixing it were both complex and fragile, according
to Eric they were also doing quite dangerous things to the
hardware.

Instead we now have patches that solve this problem via static
NUMA node mappings - not dynamic allocation and balancing.

The patches are much simpler than this method but are still too
large outside of the merge window, so we mark the dynamic balancer
as broken for now, and queue up the new approach for v2.6.31.

[ Impact: deactivate broken kernel feature ]

Reported-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
LKML-Reference: <49E68C41.4020801@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/Kconfig