Users of xc_get_pfn_type_batch may want to sanity check the data
returned by Xen. Add a simple helper for this purpose.
Signed-off-by: Olaf Hering <o...@aepfle.de>
v02:
- rename xc_is_known_page_type to sr_is_known_page_type
- move from ctrl/xc_private.h to saverestore/common.h (jgross)
---
tools/libs/saverestore/common.h | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/tools/libs/saverestore/common.h b/tools/libs/saverestore/common.h
index ca2eb47a4f..c9cc4206e5 100644
--- a/tools/libs/saverestore/common.h
+++ b/tools/libs/saverestore/common.h
@@ -467,6 +467,39 @@ int populate_pfns(struct xc_sr_context *ctx, unsigned int
count,
/* Handle a STATIC_DATA_END record. */
int handle_static_data_end(struct xc_sr_context *ctx);
+/* Sanitiy check for types returned by Xen */
+static inline bool sr_is_known_page_type(xen_pfn_t type)
+{
+ bool ret;
+
+ switch (type)
+ {
+ case XEN_DOMCTL_PFINFO_NOTAB:
+
+ case XEN_DOMCTL_PFINFO_L1TAB:
+ case XEN_DOMCTL_PFINFO_L1TAB | XEN_DOMCTL_PFINFO_LPINTAB:
+
+ case XEN_DOMCTL_PFINFO_L2TAB:
+ case XEN_DOMCTL_PFINFO_L2TAB | XEN_DOMCTL_PFINFO_LPINTAB:
+
+ case XEN_DOMCTL_PFINFO_L3TAB:
+ case XEN_DOMCTL_PFINFO_L3TAB | XEN_DOMCTL_PFINFO_LPINTAB:
+
+ case XEN_DOMCTL_PFINFO_L4TAB:
+ case XEN_DOMCTL_PFINFO_L4TAB | XEN_DOMCTL_PFINFO_LPINTAB:
+
+ case XEN_DOMCTL_PFINFO_XTAB:
+ case XEN_DOMCTL_PFINFO_XALLOC:
+ case XEN_DOMCTL_PFINFO_BROKEN:
+ ret = true;
+ break;
+ default:
+ ret = false;
+ break;
+ }
+ return ret;
+}
+
#endif
/*
* Local variables:
