xen: add batch completion callbacks

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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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Jeremy Fitzhardinge 2007-10-16 11:51:30 -07:00 • committed by Jeremy Fitzhardinge

parent f0d7339427

commit 91e0c5f3da

2 changed files with 29 additions and 3 deletions

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29

arch/x86/xen/multicalls.c

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3

arch/x86/xen/multicalls.h

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