[PATCH v6 06/14] xen: Move the hvm_start_info C representation from libxc to public/xen.h

[Anthony PERARD <anthony.perard@citrix.com>]

Instead of having several representation of hvm_start_info in C, define
it in public/xen.h so both libxc and hvmloader can use it.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>

---
Changes in V6:
- move C representation to public/arch-x86/hvm/start_info.h instead of
  public/xen.h

Change in V5:
- remove packed attribute.

New in V4.
---
 tools/libxc/include/xc_dom.h                 | 31 ----------------
 tools/libxc/xc_dom_x86.c                     |  1 +
 xen/include/public/arch-x86/hvm/start_info.h | 53 ++++++++++++++++++++++++++++
 3 files changed, 54 insertions(+), 31 deletions(-)
 create mode 100644 xen/include/public/arch-x86/hvm/start_info.h

diff --git a/tools/libxc/include/xc_dom.h b/tools/libxc/include/xc_dom.h
index 0629971..de7dca9 100644
--- a/tools/libxc/include/xc_dom.h
+++ b/tools/libxc/include/xc_dom.h
@@ -219,37 +219,6 @@ struct xc_dom_image {
     struct xc_hvm_firmware_module smbios_module;
 };
 
-#if defined(__i386__) || defined(__x86_64__)
-/* C representation of the x86/HVM start info layout.
- *
- * The canonical definition of this layout resides in public/xen.h, this
- * is just a way to represent the layout described there using C types.
- *
- * NB: the packed attribute is not really needed, but it helps us enforce
- * the fact this this is just a representation, and it might indeed
- * be required in the future if there are alignment changes.
- */
-struct hvm_start_info {
-    uint32_t magic;             /* Contains the magic value 0x336ec578       */
-                                /* ("xEn3" with the 0x80 bit of the "E" set).*/
-    uint32_t version;           /* Version of this structure.                */
-    uint32_t flags;             /* SIF_xxx flags.                            */
-    uint32_t nr_modules;        /* Number of modules passed to the kernel.   */
-    uint64_t modlist_paddr;     /* Physical address of an array of           */
-                                /* hvm_modlist_entry.                        */
-    uint64_t cmdline_paddr;     /* Physical address of the command line.     */
-    uint64_t rsdp_paddr;        /* Physical address of the RSDP ACPI data    */
-                                /* structure.                                */
-} __attribute__((packed));
-
-struct hvm_modlist_entry {
-    uint64_t paddr;             /* Physical address of the module.           */
-    uint64_t size;              /* Size of the module in bytes.              */
-    uint64_t cmdline_paddr;     /* Physical address of the command line.     */
-    uint64_t reserved;
-} __attribute__((packed));
-#endif /* x86 */
-
 /* --- pluggable kernel loader ------------------------------------- */
 
 struct xc_dom_loader {
diff --git a/tools/libxc/xc_dom_x86.c b/tools/libxc/xc_dom_x86.c
index bc2dbb2..0eab8a7 100644
--- a/tools/libxc/xc_dom_x86.c
+++ b/tools/libxc/xc_dom_x86.c
@@ -32,6 +32,7 @@
 #include <xen/foreign/x86_32.h>
 #include <xen/foreign/x86_64.h>
 #include <xen/hvm/hvm_info_table.h>
+#include <xen/arch-x86/hvm/start_info.h>
 #include <xen/io/protocols.h>
 
 #include "xg_private.h"
diff --git a/xen/include/public/arch-x86/hvm/start_info.h b/xen/include/public/arch-x86/hvm/start_info.h
new file mode 100644
index 0000000..6981187
--- /dev/null
+++ b/xen/include/public/arch-x86/hvm/start_info.h
@@ -0,0 +1,53 @@
+/*
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Copyright (c) 2016, Citrix Systems, Inc.
+ */
+
+#ifndef __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__
+#define __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__
+
+/*
+ * C representation of the x86/HVM start info layout.
+ *
+ * The canonical definition of this layout resides in public/xen.h, this
+ * is just a way to represent the layout described there using C types.
+ *
+ */
+struct hvm_start_info {
+    uint32_t magic;             /* Contains the magic value 0x336ec578       */
+                                /* ("xEn3" with the 0x80 bit of the "E" set).*/
+    uint32_t version;           /* Version of this structure.                */
+    uint32_t flags;             /* SIF_xxx flags.                            */
+    uint32_t nr_modules;        /* Number of modules passed to the kernel.   */
+    uint64_t modlist_paddr;     /* Physical address of an array of           */
+                                /* hvm_modlist_entry.                        */
+    uint64_t cmdline_paddr;     /* Physical address of the command line.     */
+    uint64_t rsdp_paddr;        /* Physical address of the RSDP ACPI data    */
+                                /* structure.                                */
+};
+
+struct hvm_modlist_entry {
+    uint64_t paddr;             /* Physical address of the module.           */
+    uint64_t size;              /* Size of the module in bytes.              */
+    uint64_t cmdline_paddr;     /* Physical address of the command line.     */
+    uint64_t reserved;
+};
+
+#endif /* __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__ */
-- 
Anthony PERARD


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