xen: restore vcpu_info mapping

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If we're using vcpu_info mapping, then make sure its restored on all
processors before relasing them from stop_machine.

The only complication is that if this fails, we can't continue because
we've already made assumptions that the mapping is available (baked in
calls to the _direct versions of the functions, for example).

Fortunately this can only happen with a 32-bit hypervisor, which may
possibly run out of mapping space.  On a 64-bit hypervisor, this is a
non-issue.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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This commit is contained in:

Jeremy Fitzhardinge 2008-05-31 01:33:02 +01:00 • committed by Ingo Molnar

parent e2426cf85f

commit 9c7a794209

3 changed files with 33 additions and 2 deletions

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30

arch/x86/xen/enlighten.c

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4

arch/x86/xen/suspend.c

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1

arch/x86/xen/xen-ops.h

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