s390-tools/s390-tools-sles15sp2-07-zipl-define-__section-macro-and-make-use-of-it.patch

Subject: [PATCH] [FEAT VS1804] zipl: define __section macro and make use of it
From: Marc Hartmayer <mhartmay@linux.ibm.com>

Summary:     genprotimg: Introduce new tool for the creation of PV images
Description: genprotimg takes a kernel, host-key documents, optionally an
             initrd, optionally a file with the kernel command line, and it
             generates a single, loadable image file. The image consists of a
             concatenation of a plain text boot loader, the encrypted
             components for kernel, initrd, and cmdline, and the
             integrity-protected PV header, containing metadata necessary for
             running the guest in PV mode. It's possible to use this image file
             as a kernel for zIPL or for a direct kernel boot using QEMU.
Upstream-ID: 154734efc7ffeb1e51dd2be62561a364fdc6117c
Problem-ID:  VS1804

Upstream-Description:

             zipl: define __section macro and make use of it

             Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
             Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
             Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>


Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
---
 include/lib/zt_common.h  |    1 +
 zipl/boot/eckd2dump_mv.c |    8 ++++----
 zipl/boot/eckd2dump_sv.c |    5 +++--
 zipl/boot/fba2dump.c     |    4 ++--
 zipl/boot/stage2.c       |    4 +++-
 zipl/boot/stage2dump.c   |    5 +++--
 zipl/boot/stage2dump.h   |    3 +--
 zipl/boot/tape2dump.c    |    4 +++-
 8 files changed, 20 insertions(+), 14 deletions(-)

--- a/include/lib/zt_common.h
+++ b/include/lib/zt_common.h
@@ -31,6 +31,7 @@
 #define __packed __attribute__((packed))
 #define __aligned(x) __attribute__((aligned(x)))
 #define __may_alias __attribute__((may_alias))
+#define __section(x) __attribute__((__section__(#x)))
 
 typedef unsigned long long	u64;
 typedef signed long long	s64;
--- a/zipl/boot/eckd2dump_mv.c
+++ b/zipl/boot/eckd2dump_mv.c
@@ -9,6 +9,8 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include "lib/zt_common.h"
+
 #include "eckd2dump.h"
 #include "error.h"
 #include "stage2dump.h"
@@ -19,8 +21,7 @@
 /*
  * Magic number at start of dump record
  */
-uint64_t magic __attribute__((section(".stage2.head")))
-	= 0x584d554c54363401ULL; /* XMULT64, version 1 */
+uint64_t __section(.stage2.head) magic = 0x584d554c54363401ULL; /* XMULT64, version 1 */
 
 /*
  * Parameter format for ECKD MV dumper (13 bytes):
@@ -59,8 +60,7 @@ struct mvdump_parm_table {
 			(MAX_DUMP_VOLUMES * (sizeof(struct mvdump_param) + 1))];
 } __packed;
 
-static struct mvdump_parm_table mvdump_table
-	__attribute__((section(".eckd2dump_mv.tail")));
+static struct mvdump_parm_table __section(.eckd2dump_mv.tail) mvdump_table;
 
 static int volnr_current;
 
--- a/zipl/boot/eckd2dump_sv.c
+++ b/zipl/boot/eckd2dump_sv.c
@@ -9,6 +9,8 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include "lib/zt_common.h"
+
 #include "eckd2dump.h"
 #include "error.h"
 #include "stage2dump.h"
@@ -16,8 +18,7 @@
 /*
  * Magic number at start of dump record
  */
-uint64_t magic __attribute__((section(".stage2.head"))) =
-	0x5845434b44363401ULL; /* "XECKD64", version 1 */
+uint64_t __section(.stage2.head) magic = 0x5845434b44363401ULL; /* "XECKD64", version 1 */
 
 /*
  * ECKD parameter block passed by zipl
--- a/zipl/boot/fba2dump.c
+++ b/zipl/boot/fba2dump.c
@@ -9,6 +9,7 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include "lib/zt_common.h"
 #include "error.h"
 #include "fba.h"
 #include "stage2dump.h"
@@ -20,8 +21,7 @@
 /*
  * Magic number at start of dump record
  */
-uint64_t magic __attribute__((section(".stage2.head")))
-	= 0x5844464241363401ULL; /* XDFBA64, version 1 */
+uint64_t __section(.stage2.head) magic = 0x5844464241363401ULL; /* XDFBA64, version 1 */
 
 /*
  * FBA dump device partition specification
--- a/zipl/boot/stage2.c
+++ b/zipl/boot/stage2.c
@@ -9,6 +9,8 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include "lib/zt_common.h"
+
 #include "error.h"
 #include "libc.h"
 #include "menu.h"
@@ -141,4 +143,4 @@ void panic_notify(unsigned long UNUSED(r
 {
 }
 
-uint64_t stage2_head __attribute__((section(".stage2.head")));
+uint64_t __section(.stage2.head) stage2_head;
--- a/zipl/boot/stage2dump.c
+++ b/zipl/boot/stage2dump.c
@@ -11,6 +11,8 @@
 
 #include <stdarg.h>
 
+#include "lib/zt_common.h"
+
 #include "error.h"
 #include "sclp.h"
 #include "stage2dump.h"
@@ -34,8 +36,7 @@ struct ipib_info {
 /*
  * Tail parameters
  */
-struct stage2dump_parm_tail parm_tail
-	__attribute__ ((section(".stage2dump.tail"))) = {
+struct stage2dump_parm_tail parm_tail = {
 	.mem_upper_limit = 0xffffffffffffffffULL,
 };
 
--- a/zipl/boot/stage2dump.h
+++ b/zipl/boot/stage2dump.h
@@ -28,8 +28,7 @@ struct stage2dump_parm_tail {
 	uint64_t	mem_upper_limit;
 } __packed;
 
-extern struct stage2dump_parm_tail parm_tail
-	__attribute__ ((section(".stage2dump.tail")));
+extern struct stage2dump_parm_tail __section(.stage2dump.tail) parm_tail;
 
 /*
  * S390 dump format defines
--- a/zipl/boot/tape2dump.c
+++ b/zipl/boot/tape2dump.c
@@ -9,6 +9,8 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include "lib/zt_common.h"
+
 #include "cio.h"
 #include "error.h"
 #include "libc.h"
@@ -33,7 +35,7 @@ struct tape_head {
 	uint64_t	ccw2;
 } __packed;
 
-struct tape_head tape_head __attribute__((section(".stage2.head"))) = {
+struct tape_head __section(.stage2.head) tape_head = {
 	.psw	= 0x0008000080002018ULL, /* Start code at 0x2018 */
 	.ccw1	= 0x0700000060000001ULL, /* Rewind ccw */
 	.ccw2	= 0x0200200020003000ULL, /* CCW to load dump tool to 0x2000 */