[CRIU] [PATCH 4/9] vdso: Remap runtime vdso copy to safe place

[Cyrill Gorcunov]

Runtime vdso need to be kept in some safe place when all
self-vmas are unmapped. So we reserve space for it in restorer
blob area and then remap it into. It's quite important to do
a remap here rather than data copy because otherwise pfn
of vdso disappear and in future we won't be able to detect
vdso are on dumping stage.

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 arch/arm/include/asm/vdso.h |  1 +
 arch/arm/vdso-pie.c         |  5 +++++
 arch/x86/include/asm/vdso.h |  1 +
 arch/x86/vdso-pie.c         | 16 ++++++++++++++++
 cr-restore.c                | 30 +++++++++++++++++++++++++++---
 include/restorer.h          |  5 +++++
 pie/restorer.c              | 18 ++++++++++++++++++
 7 files changed, 73 insertions(+), 3 deletions(-)

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