Messages in this thread | | | From | (Eric W. Biederman) | Subject | Re: [patch] x86_64, irq: check remote IRR bit before migrating level triggered irq | Date | Fri, 18 May 2007 12:01:37 -0600 |
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"Yinghai Lu" <yhlu.kernel@gmail.com> writes:
> Eric, > > ioapic_level irq is limited, So if we keep vector number not changed > when imgration to other cpus. It that could help.
We can solve the problem without doing that, and keeping the same vector number during migration keeps x86 from scaling. Personally I would prefer to disallow irq migration.
> it will need modify a little with assign_irq_vector and > irq_complete_move/smp_irq_move_cleanup_interrupt. because it assume > vector must be changed.
Yes it does.
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