From: Jeremy Fitzhardinge <jeremy@xensource.com>
Date: Tue, 16 Oct 2007 18:51:30 +0000 (-0700)
Subject: xen: add batch completion callbacks
X-Git-Tag: v2.6.24-rc1~478^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=91e0c5f3dad47838cb2ecc1865ce789a0b7182b1;p=pandora-kernel.git

xen: add batch completion callbacks

This adds a mechanism to register a callback function to be called once
a batch of hypercalls has been issued.  This is typically used to unlock
things which must remain locked until the hypercall has taken place.

[ Stable folks: pre-req for 2.6.23 bugfix "xen: deal with stale cr3
  values when unpinning pagetables" ]

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Stable Kernel <stable@kernel.org>
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