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From: ebiederm@xmission.com (Eric W. Biederman)
To: "Yinghai Lu" <yhlu.kernel@gmail.com>
Cc: "Jeremy Fitzhardinge" <jeremy@goop.org>, "H. Peter Anvin" <hpa@zytor.com>,
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Date: Sat, 02 Aug 2008 23:35:42 -0700
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	(Yinghai Lu's message of "Sat, 2 Aug 2008 22:58:24 -0700")
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Subject: Re: [PATCH] x86_64: Restore the proper NR_IRQS define so larger systems work.
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"Yinghai Lu" <yhlu.kernel@gmail.com> writes:


> what should xen pv 64 get for NR_IRQS?

Xen pv 64 will work at least as well with a larger definition for
NR_IRQS as it will work with a smaller definition, and since
NR_VECTORS is 256 we always have more irqs with the 32bit definition
we were mistakenly using. 

Xen has 1024 event channels so I expect 1024 would the nice number to
provide there.

Eric