IOUserClient size limit?

• Subject: IOUserClient size limit?
• From: "Duane Murphy" <email@hidden>
• Date: Mon, 10 Nov 2008 15:05:50 -0700
• Delivered-to: email@hidden
• Delivered-to: email@hidden

I am seeing a kIOReturnIPCError form an IOUserClient down call (i.e.
from my app into the kernel) when I have a structure that is over 4K
(4096) bytes in size.

Is this a hard limit? Can I change this limit? I have some I/O through
the user client that I would like to take a larger buffer (16K).

Thanks for any tips,

 ...Duane

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