# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1243861973 -3600
# Node ID bd39df93a29e015e93b708639756661c3419b602
# Parent 84c1f7c46444eaa33fc14fc519ebfc5f11098903
libxc: export xc_map_m2p() so that it can be called outside.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@xxxxxxxxx>
---
tools/libxc/xc_domain_save.c | 10 ++++++----
tools/libxc/xenguest.h | 13 +++++++++++++
2 files changed, 19 insertions(+), 4 deletions(-)
diff -r 84c1f7c46444 -r bd39df93a29e tools/libxc/xc_domain_save.c
--- a/tools/libxc/xc_domain_save.c Mon Jun 01 14:08:58 2009 +0100
+++ b/tools/libxc/xc_domain_save.c Mon Jun 01 14:12:53 2009 +0100
@@ -510,9 +510,10 @@ static int canonicalize_pagetable(unsign
return race;
}
-static xen_pfn_t *xc_map_m2p(int xc_handle,
+xen_pfn_t *xc_map_m2p(int xc_handle,
unsigned long max_mfn,
- int prot)
+ int prot,
+ unsigned long *mfn0)
{
struct xen_machphys_mfn_list xmml;
privcmd_mmap_entry_t *entries;
@@ -561,7 +562,8 @@ static xen_pfn_t *xc_map_m2p(int xc_hand
goto err2;
}
- m2p_mfn0 = entries[0].mfn;
+ if (mfn0)
+ *mfn0 = entries[0].mfn;
err2:
free(entries);
@@ -949,7 +951,7 @@ int xc_domain_save(int xc_handle, int io
}
/* Setup the mfn_to_pfn table mapping */
- if ( !(live_m2p = xc_map_m2p(xc_handle, max_mfn, PROT_READ)) )
+ if ( !(live_m2p = xc_map_m2p(xc_handle, max_mfn, PROT_READ, &m2p_mfn0)) )
{
ERROR("Failed to map live M2P table");
goto out;
diff -r 84c1f7c46444 -r bd39df93a29e tools/libxc/xenguest.h
--- a/tools/libxc/xenguest.h Mon Jun 01 14:08:58 2009 +0100
+++ b/tools/libxc/xenguest.h Mon Jun 01 14:12:53 2009 +0100
@@ -163,4 +163,17 @@ int xc_query_page_offline_status(int xc,
int xc_query_page_offline_status(int xc, unsigned long start,
unsigned long end, uint32_t *status);
+
+/**
+ * This function map m2p table
+ * @parm xc_handle a handle to an open hypervisor interface
+ * @parm max_mfn the max pfn
+ * @parm prot the flags to map, such as read/write etc
+ * @parm mfn0 return the first mfn, can be NULL
+ * @return mapped m2p table on success, NULL on failure
+ */
+xen_pfn_t *xc_map_m2p(int xc_handle,
+ unsigned long max_mfn,
+ int prot,
+ unsigned long *mfn0);
#endif /* XENGUEST_H */
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