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Re: [Xen-devel] [PATCH v4 1/4] x86/HVM: update the start info structure layout
On 02/16/2016 12:37 PM, Roger Pau Monne wrote:
diff --git a/xen/include/public/xen.h b/xen/include/public/xen.h
index 7b629b1..6ba060f 100644
--- a/xen/include/public/xen.h
+++ b/xen/include/public/xen.h
@@ -787,25 +787,46 @@ typedef struct start_info start_info_t;
/*
* Start of day structure passed to PVH guests in %ebx.
*
- * NOTE: nothing will be loaded at physical address 0, so
- * a 0 value in any of the address fields should be treated
- * as not present.
+ * NOTE: nothing will be loaded at physical address 0, so a 0 value in any
+ * of the address fields should be treated as not present.
+ *
+ * 0 +----------------+
+ * | magic | Contains the magic value HVM_START_MAGIC_VALUE
+ * | | ("xEn3" with the 0x80 bit of the "E" set).
+ * 4 +----------------+
+ * | version | Version of this structure. Current version is 0. New
+ * | | versions are guaranteed to be backwards-compatible.
#define XEN_HVM_START_INFO_VERSION 0
is needed then?
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