From owner-freebsd-emulation@FreeBSD.ORG  Wed Apr 14 17:31:43 2010
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Date: Wed, 14 Apr 2010 12:13:07 -0500
From: Alan Cox <alc@cs.rice.edu>
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Cc: Alan Cox <alc@cs.rice.edu>
Subject: VirtualBox and kmem_alloc_attr()
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I have added a new kernel interface for allocating kernel virtual 
memory, kmem_alloc_attr(), that should make a proper implementation of 
VirtualBox's function rtR0MemObjNativeAllocLow() easy.  
kmem_alloc_attr() is now supported by HEAD, 8-STABLE, and 7-STABLE.

Regards,
Alan