Merge tag 's390-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Add clang 10 build support.

 - Fix BUG() implementation to contain precise bug address, which is
   relevant for kprobes.

 - Make ftraced function appear in a stacktrace.

 - Minor perf improvements and refactoring.

 - Possible deadlock and recovery fixes in pci code.

* tag 's390-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: fix __EMIT_BUG() macro
  s390/ftrace: generate traced function stack frame
  s390: adjust -mpacked-stack support check for clang 10
  s390/jump_label: use "i" constraint for clang
  s390/cpum_sf: Use DIV_ROUND_UP
  s390/cpum_sf: Use kzalloc and minor changes
  s390/cpum_sf: Convert debug trace to common layout
  s390/pci: Fix possible deadlock in recover_store()
  s390/pci: Recover handle in clp_set_pci_fn()

3 files changed, 11 insertions, 11 deletions

diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h
index a2b11ac00f60..7725f8006fdf 100644
--- a/arch/s390/include/asm/bug.h
+++ b/arch/s390/include/asm/bug.h
@@ -10,15 +10,14 @@
 
 #define __EMIT_BUG(x) do {					\
 	asm_inline volatile(					\
-		"0:	j	0b+2\n"				\
-		"1:\n"						\
+		"0:	mc	0,0\n"				\
 		".section .rodata.str,\"aMS\",@progbits,1\n"	\
-		"2:	.asciz	\""__FILE__"\"\n"		\
+		"1:	.asciz	\""__FILE__"\"\n"		\
 		".previous\n"					\
 		".section __bug_table,\"awM\",@progbits,%2\n"	\
-		"3:	.long	1b-3b,2b-3b\n"			\
+		"2:	.long	0b-2b,1b-2b\n"			\
 		"	.short	%0,%1\n"			\
-		"	.org	3b+%2\n"			\
+		"	.org	2b+%2\n"			\
 		".previous\n"					\
 		: : "i" (__LINE__),				\
 		    "i" (x),					\
@@ -29,12 +28,11 @@
 
 #define __EMIT_BUG(x) do {					\
 	asm_inline volatile(					\
-		"0:	j	0b+2\n"				\
-		"1:\n"						\
+		"0:	mc	0,0\n"				\
 		".section __bug_table,\"awM\",@progbits,%1\n"	\
-		"2:	.long	1b-2b\n"			\
+		"1:	.long	0b-1b\n"			\
 		"	.short	%0\n"				\
-		"	.org	2b+%1\n"			\
+		"	.org	1b+%1\n"			\
 		".previous\n"					\
 		: : "i" (x),					\
 		    "i" (sizeof(struct bug_entry)));		\
diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h
index 39f747d63758..dcb1bba4f406 100644
--- a/arch/s390/include/asm/jump_label.h
+++ b/arch/s390/include/asm/jump_label.h
@@ -10,7 +10,9 @@
 #define JUMP_LABEL_NOP_SIZE 6
 #define JUMP_LABEL_NOP_OFFSET 2
 
-#if __GNUC__ < 9
+#ifdef CONFIG_CC_IS_CLANG
+#define JUMP_LABEL_STATIC_KEY_CONSTRAINT "i"
+#elif __GNUC__ < 9
 #define JUMP_LABEL_STATIC_KEY_CONSTRAINT "X"
 #else
 #define JUMP_LABEL_STATIC_KEY_CONSTRAINT "jdd"
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 3a06c264ea53..b05187ce5dbd 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -180,7 +180,7 @@ void zpci_remove_reserved_devices(void);
 /* CLP */
 int clp_scan_pci_devices(void);
 int clp_rescan_pci_devices(void);
-int clp_rescan_pci_devices_simple(void);
+int clp_rescan_pci_devices_simple(u32 *fid);
 int clp_add_pci_device(u32, u32, int);
 int clp_enable_fh(struct zpci_dev *, u8);
 int clp_disable_fh(struct zpci_dev *);