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xen: don't use xenstore to save/restore physmap anymore

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If we have a system with xenforeignmemory_map2() implemented
we don't need to save/restore physmap on suspend/restore
anymore. In case we resume a VM without physmap - try to
recreate the physmap during memory region restore phase and
remap map cache entries accordingly. The old code is left
for compatibility reasons.

Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Igor Druzhinin
2017-07-18 14:16:52 -07:00
committed by Stefano Stabellini
parent 5ba3d75645
commit 331b5189d7
3 changed files with 41 additions and 12 deletions
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include/hw/xen/xen_common.h
+1
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@@ -80,6 +80,7 @@ extern xenforeignmemory_handle *xen_fmem;
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 41000
#define XEN_COMPAT_PHYSMAP
static inline void *xenforeignmemory_map2(xenforeignmemory_handle *h,
uint32_t dom, void *addr,
int prot, int flags, size_t pages,