Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Martin Schwidefsky:
 "There is one larger patch for the AP bus code to make it work with the
  longer reset periods of the latest crypto cards.

  A new default configuration, a naming cleanup for SMP and a few fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/kdump: fix compile for !SMP
  s390/kdump: fix nosmt kernel parameter
  s390: new default configuration
  s390/smp: cleanup core vs. cpu in the SCLP interface
  s390/smp: fix sigp cpu detection loop
  s390/zcrypt: Fixed reset and interrupt handling of AP queues
  s390/kdump: fix REGSET_VX_LOW vector register ELF notes
  s390/bpf: Fix backward jumps

arch/s390/configs/default_defconfig

@@ -17,13 +17,15 @@ CONFIG_CGROUP_FREEZER=y
 CONFIG_CGROUP_DEVICE=y
 CONFIG_CPUSETS=y
 CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
 CONFIG_CGROUP_PERF=y
 CONFIG_CFS_BANDWIDTH=y
 CONFIG_RT_GROUP_SCHED=y
 CONFIG_BLK_CGROUP=y
+CONFIG_NAMESPACES=y
 CONFIG_SCHED_AUTOGROUP=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_EXPERT=y
+CONFIG_BPF_SYSCALL=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
 CONFIG_OPROFILE=m
@@ -44,6 +46,7 @@ CONFIG_SOLARIS_X86_PARTITION=y
 CONFIG_UNIXWARE_DISKLABEL=y
 CONFIG_CFQ_GROUP_IOSCHED=y
 CONFIG_DEFAULT_DEADLINE=y
+CONFIG_LIVEPATCH=y
 CONFIG_MARCH_Z196=y
 CONFIG_TUNE_ZEC12=y
 CONFIG_NR_CPUS=256
@@ -242,9 +245,9 @@ CONFIG_NF_CONNTRACK_IPV4=m
 # CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
 CONFIG_NF_TABLES_IPV4=m
 CONFIG_NFT_CHAIN_ROUTE_IPV4=m
-CONFIG_NFT_CHAIN_NAT_IPV4=m
 CONFIG_NF_TABLES_ARP=m
 CONFIG_NF_NAT_IPV4=m
+CONFIG_NFT_CHAIN_NAT_IPV4=m
 CONFIG_IP_NF_IPTABLES=m
 CONFIG_IP_NF_MATCH_AH=m
 CONFIG_IP_NF_MATCH_ECN=m
@@ -264,8 +267,8 @@ CONFIG_IP_NF_ARP_MANGLE=m
 CONFIG_NF_CONNTRACK_IPV6=m
 CONFIG_NF_TABLES_IPV6=m
 CONFIG_NFT_CHAIN_ROUTE_IPV6=m
-CONFIG_NFT_CHAIN_NAT_IPV6=m
 CONFIG_NF_NAT_IPV6=m
+CONFIG_NFT_CHAIN_NAT_IPV6=m
 CONFIG_IP6_NF_IPTABLES=m
 CONFIG_IP6_NF_MATCH_AH=m
 CONFIG_IP6_NF_MATCH_EUI64=m
@@ -353,7 +356,6 @@ CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_OSD=m
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_SIZE=32768
-CONFIG_BLK_DEV_XIP=y
 CONFIG_CDROM_PKTCDVD=m
 CONFIG_ATA_OVER_ETH=m
 CONFIG_VIRTIO_BLK=y
@@ -458,7 +460,6 @@ CONFIG_EXT2_FS=y
 CONFIG_EXT2_FS_XATTR=y
 CONFIG_EXT2_FS_POSIX_ACL=y
 CONFIG_EXT2_FS_SECURITY=y
-CONFIG_EXT2_FS_XIP=y
 CONFIG_EXT3_FS=y
 # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
 CONFIG_EXT3_FS_POSIX_ACL=y
@@ -544,7 +545,6 @@ CONFIG_FRAME_WARN=1024
 CONFIG_READABLE_ASM=y
 CONFIG_UNUSED_SYMBOLS=y
 CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_PAGEALLOC=y
 CONFIG_DEBUG_OBJECTS=y
 CONFIG_DEBUG_OBJECTS_SELFTEST=y
@@ -558,6 +558,7 @@ CONFIG_SLUB_STATS=y
 CONFIG_DEBUG_STACK_USAGE=y
 CONFIG_DEBUG_VM=y
 CONFIG_DEBUG_VM_RB=y
+CONFIG_DEBUG_MEMORY_INIT=y
 CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
 CONFIG_DEBUG_PER_CPU_MAPS=y
 CONFIG_DEBUG_SHIRQ=y
@@ -575,7 +576,6 @@ CONFIG_DEBUG_LIST=y
 CONFIG_DEBUG_SG=y
 CONFIG_DEBUG_NOTIFIERS=y
 CONFIG_DEBUG_CREDENTIALS=y
-CONFIG_PROVE_RCU=y
 CONFIG_RCU_TORTURE_TEST=m
 CONFIG_RCU_CPU_STALL_TIMEOUT=300
 CONFIG_NOTIFIER_ERROR_INJECTION=m
@@ -611,7 +611,6 @@ CONFIG_TEST_BPF=m
 # CONFIG_STRICT_DEVMEM is not set
 CONFIG_S390_PTDUMP=y
 CONFIG_ENCRYPTED_KEYS=m
-CONFIG_KEYS_DEBUG_PROC_KEYS=y
 CONFIG_SECURITY=y
 CONFIG_SECURITY_NETWORK=y
 CONFIG_SECURITY_SELINUX=y

arch/s390/configs/gcov_defconfig

@@ -17,11 +17,13 @@ CONFIG_CGROUP_FREEZER=y
 CONFIG_CGROUP_DEVICE=y
 CONFIG_CPUSETS=y
 CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
 CONFIG_CGROUP_PERF=y
 CONFIG_BLK_CGROUP=y
+CONFIG_NAMESPACES=y
 CONFIG_SCHED_AUTOGROUP=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_EXPERT=y
+CONFIG_BPF_SYSCALL=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
 CONFIG_OPROFILE=m
@@ -240,9 +242,9 @@ CONFIG_NF_CONNTRACK_IPV4=m
 # CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
 CONFIG_NF_TABLES_IPV4=m
 CONFIG_NFT_CHAIN_ROUTE_IPV4=m
-CONFIG_NFT_CHAIN_NAT_IPV4=m
 CONFIG_NF_TABLES_ARP=m
 CONFIG_NF_NAT_IPV4=m
+CONFIG_NFT_CHAIN_NAT_IPV4=m
 CONFIG_IP_NF_IPTABLES=m
 CONFIG_IP_NF_MATCH_AH=m
 CONFIG_IP_NF_MATCH_ECN=m
@@ -262,8 +264,8 @@ CONFIG_IP_NF_ARP_MANGLE=m
 CONFIG_NF_CONNTRACK_IPV6=m
 CONFIG_NF_TABLES_IPV6=m
 CONFIG_NFT_CHAIN_ROUTE_IPV6=m
-CONFIG_NFT_CHAIN_NAT_IPV6=m
 CONFIG_NF_NAT_IPV6=m
+CONFIG_NFT_CHAIN_NAT_IPV6=m
 CONFIG_IP6_NF_IPTABLES=m
 CONFIG_IP6_NF_MATCH_AH=m
 CONFIG_IP6_NF_MATCH_EUI64=m
@@ -350,7 +352,6 @@ CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_OSD=m
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_SIZE=32768
-CONFIG_BLK_DEV_XIP=y
 CONFIG_CDROM_PKTCDVD=m
 CONFIG_ATA_OVER_ETH=m
 CONFIG_VIRTIO_BLK=y
@@ -455,7 +456,6 @@ CONFIG_EXT2_FS=y
 CONFIG_EXT2_FS_XATTR=y
 CONFIG_EXT2_FS_POSIX_ACL=y
 CONFIG_EXT2_FS_SECURITY=y
-CONFIG_EXT2_FS_XIP=y
 CONFIG_EXT3_FS=y
 # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
 CONFIG_EXT3_FS_POSIX_ACL=y
@@ -538,7 +538,7 @@ CONFIG_DEBUG_INFO=y
 CONFIG_FRAME_WARN=1024
 CONFIG_UNUSED_SYMBOLS=y
 CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
+CONFIG_DEBUG_MEMORY_INIT=y
 CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
 CONFIG_PANIC_ON_OOPS=y
 CONFIG_TIMER_STATS=y
@@ -558,7 +558,6 @@ CONFIG_ATOMIC64_SELFTEST=y
 # CONFIG_STRICT_DEVMEM is not set
 CONFIG_S390_PTDUMP=y
 CONFIG_ENCRYPTED_KEYS=m
-CONFIG_KEYS_DEBUG_PROC_KEYS=y
 CONFIG_SECURITY=y
 CONFIG_SECURITY_NETWORK=y
 CONFIG_SECURITY_SELINUX=y

arch/s390/configs/performance_defconfig

@@ -17,11 +17,13 @@ CONFIG_CGROUP_FREEZER=y
 CONFIG_CGROUP_DEVICE=y
 CONFIG_CPUSETS=y
 CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
 CONFIG_CGROUP_PERF=y
 CONFIG_BLK_CGROUP=y
+CONFIG_NAMESPACES=y
 CONFIG_SCHED_AUTOGROUP=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_EXPERT=y
+CONFIG_BPF_SYSCALL=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
 CONFIG_OPROFILE=m
@@ -42,9 +44,10 @@ CONFIG_SOLARIS_X86_PARTITION=y
 CONFIG_UNIXWARE_DISKLABEL=y
 CONFIG_CFQ_GROUP_IOSCHED=y
 CONFIG_DEFAULT_DEADLINE=y
+CONFIG_LIVEPATCH=y
 CONFIG_MARCH_Z196=y
 CONFIG_TUNE_ZEC12=y
-CONFIG_NR_CPUS=256
+CONFIG_NR_CPUS=512
 CONFIG_HZ_100=y
 CONFIG_MEMORY_HOTPLUG=y
 CONFIG_MEMORY_HOTREMOVE=y
@@ -238,9 +241,9 @@ CONFIG_NF_CONNTRACK_IPV4=m
 # CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
 CONFIG_NF_TABLES_IPV4=m
 CONFIG_NFT_CHAIN_ROUTE_IPV4=m
-CONFIG_NFT_CHAIN_NAT_IPV4=m
 CONFIG_NF_TABLES_ARP=m
 CONFIG_NF_NAT_IPV4=m
+CONFIG_NFT_CHAIN_NAT_IPV4=m
 CONFIG_IP_NF_IPTABLES=m
 CONFIG_IP_NF_MATCH_AH=m
 CONFIG_IP_NF_MATCH_ECN=m
@@ -260,8 +263,8 @@ CONFIG_IP_NF_ARP_MANGLE=m
 CONFIG_NF_CONNTRACK_IPV6=m
 CONFIG_NF_TABLES_IPV6=m
 CONFIG_NFT_CHAIN_ROUTE_IPV6=m
-CONFIG_NFT_CHAIN_NAT_IPV6=m
 CONFIG_NF_NAT_IPV6=m
+CONFIG_NFT_CHAIN_NAT_IPV6=m
 CONFIG_IP6_NF_IPTABLES=m
 CONFIG_IP6_NF_MATCH_AH=m
 CONFIG_IP6_NF_MATCH_EUI64=m
@@ -348,7 +351,6 @@ CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_OSD=m
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_SIZE=32768
-CONFIG_BLK_DEV_XIP=y
 CONFIG_CDROM_PKTCDVD=m
 CONFIG_ATA_OVER_ETH=m
 CONFIG_VIRTIO_BLK=y
@@ -453,7 +455,6 @@ CONFIG_EXT2_FS=y
 CONFIG_EXT2_FS_XATTR=y
 CONFIG_EXT2_FS_POSIX_ACL=y
 CONFIG_EXT2_FS_SECURITY=y
-CONFIG_EXT2_FS_XIP=y
 CONFIG_EXT3_FS=y
 # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
 CONFIG_EXT3_FS_POSIX_ACL=y
@@ -536,7 +537,7 @@ CONFIG_DEBUG_INFO=y
 CONFIG_FRAME_WARN=1024
 CONFIG_UNUSED_SYMBOLS=y
 CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
+CONFIG_DEBUG_MEMORY_INIT=y
 CONFIG_PANIC_ON_OOPS=y
 CONFIG_TIMER_STATS=y
 CONFIG_RCU_TORTURE_TEST=m
@@ -553,7 +554,6 @@ CONFIG_ATOMIC64_SELFTEST=y
 # CONFIG_STRICT_DEVMEM is not set
 CONFIG_S390_PTDUMP=y
 CONFIG_ENCRYPTED_KEYS=m
-CONFIG_KEYS_DEBUG_PROC_KEYS=y
 CONFIG_SECURITY=y
 CONFIG_SECURITY_NETWORK=y
 CONFIG_SECURITY_SELINUX=y

arch/s390/defconfig

@@ -8,7 +8,6 @@ CONFIG_TASKSTATS=y
 CONFIG_TASK_DELAY_ACCT=y
 CONFIG_TASK_XACCT=y
 CONFIG_TASK_IO_ACCOUNTING=y
-CONFIG_RCU_FAST_NO_HZ=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_CGROUPS=y
@@ -31,9 +30,11 @@ CONFIG_JUMP_LABEL=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODVERSIONS=y
+CONFIG_BLK_DEV_INTEGRITY=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_IBM_PARTITION=y
 CONFIG_DEFAULT_DEADLINE=y
+CONFIG_LIVEPATCH=y
 CONFIG_MARCH_Z196=y
 CONFIG_NR_CPUS=256
 CONFIG_HZ_100=y
@@ -41,7 +42,6 @@ CONFIG_MEMORY_HOTPLUG=y
 CONFIG_MEMORY_HOTREMOVE=y
 CONFIG_KSM=y
 CONFIG_TRANSPARENT_HUGEPAGE=y
-CONFIG_CMA=y
 CONFIG_CRASH_DUMP=y
 CONFIG_BINFMT_MISC=m
 CONFIG_HIBERNATION=y
@@ -125,6 +125,7 @@ CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_PAGEALLOC=y
 CONFIG_DETECT_HUNG_TASK=y
+CONFIG_PANIC_ON_OOPS=y
 CONFIG_TIMER_STATS=y
 CONFIG_DEBUG_RT_MUTEXES=y
 CONFIG_PROVE_LOCKING=y
@@ -135,12 +136,16 @@ CONFIG_DEBUG_LIST=y
 CONFIG_DEBUG_PI_LIST=y
 CONFIG_DEBUG_SG=y
 CONFIG_DEBUG_NOTIFIERS=y
-CONFIG_PROVE_RCU=y
 CONFIG_RCU_CPU_STALL_TIMEOUT=60
+# CONFIG_RCU_CPU_STALL_INFO is not set
 CONFIG_RCU_TRACE=y
 CONFIG_LATENCYTOP=y
 CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
+CONFIG_TRACER_SNAPSHOT=y
+CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y
+CONFIG_STACK_TRACER=y
 CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_UPROBE_EVENT=y
 CONFIG_KPROBES_SANITY_TEST=y
 # CONFIG_STRICT_DEVMEM is not set
 CONFIG_S390_PTDUMP=y
@@ -187,6 +192,7 @@ CONFIG_CRYPTO_ZLIB=m
 CONFIG_CRYPTO_LZO=m
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
+CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_ZCRYPT=m
 CONFIG_CRYPTO_SHA1_S390=m
 CONFIG_CRYPTO_SHA256_S390=m

arch/s390/include/asm/cpu.h

@@ -8,8 +8,6 @@
 #ifndef _ASM_S390_CPU_H
 #define _ASM_S390_CPU_H
 
-#define MAX_CPU_ADDRESS 255
-
 #ifndef __ASSEMBLY__
 
 #include <linux/types.h>

arch/s390/include/asm/ipl.h

@@ -94,7 +94,6 @@ struct dump_save_areas {
 };
 
 extern struct dump_save_areas dump_save_areas;
-struct save_area_ext *dump_save_area_create(int cpu);
 
 extern void do_reipl(void);
 extern void do_halt(void);

arch/s390/include/asm/sclp.h

@@ -11,6 +11,7 @@
 #include <asm/cpu.h>
 
 #define SCLP_CHP_INFO_MASK_SIZE		32
+#define SCLP_MAX_CORES			256
 
 struct sclp_chp_info {
 	u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
@@ -26,7 +27,7 @@ struct sclp_ipl_info {
 	char loadparm[LOADPARM_LEN];
 };
 
-struct sclp_cpu_entry {
+struct sclp_core_entry {
 	u8 core_id;
 	u8 reserved0[2];
 	u8 : 3;
@@ -38,12 +39,11 @@ struct sclp_cpu_entry {
 	u8 reserved1;
 } __attribute__((packed));
 
-struct sclp_cpu_info {
+struct sclp_core_info {
 	unsigned int configured;
 	unsigned int standby;
 	unsigned int combined;
-	int has_cpu_type;
-	struct sclp_cpu_entry cpu[MAX_CPU_ADDRESS + 1];
+	struct sclp_core_entry core[SCLP_MAX_CORES];
 };
 
 struct sclp_info {
@@ -51,7 +51,7 @@ struct sclp_info {
 	unsigned char has_vt220 : 1;
 	unsigned char has_siif : 1;
 	unsigned char has_sigpif : 1;
-	unsigned char has_cpu_type : 1;
+	unsigned char has_core_type : 1;
 	unsigned char has_sprp : 1;
 	unsigned int ibc;
 	unsigned int mtid;
@@ -60,15 +60,15 @@ struct sclp_info {
 	unsigned long long rzm;
 	unsigned long long rnmax;
 	unsigned long long hamax;
-	unsigned int max_cpu;
+	unsigned int max_cores;
 	unsigned long hsa_size;
 	unsigned long long facilities;
 };
 extern struct sclp_info sclp;
 
-int sclp_get_cpu_info(struct sclp_cpu_info *info);
-int sclp_cpu_configure(u8 cpu);
-int sclp_cpu_deconfigure(u8 cpu);
+int sclp_get_core_info(struct sclp_core_info *info);
+int sclp_core_configure(u8 core);
+int sclp_core_deconfigure(u8 core);
 int sclp_sdias_blk_count(void);
 int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
 int sclp_chp_configure(struct chp_id chpid);

arch/s390/include/asm/smp.h

@@ -29,6 +29,7 @@ extern void smp_call_ipl_cpu(void (*func)(void *), void *);
 
 extern int smp_find_processor_id(u16 address);
 extern int smp_store_status(int cpu);
+extern void smp_save_dump_cpus(void);
 extern int smp_vcpu_scheduled(int cpu);
 extern void smp_yield_cpu(int cpu);
 extern void smp_cpu_set_polarization(int cpu, int val);
@@ -54,6 +55,7 @@ static inline int smp_store_status(int cpu) { return 0; }
 static inline int smp_vcpu_scheduled(int cpu) { return 1; }
 static inline void smp_yield_cpu(int cpu) { }
 static inline void smp_fill_possible_mask(void) { }
+static inline void smp_save_dump_cpus(void) { }
 
 #endif /* CONFIG_SMP */
 

arch/s390/kernel/base.S

@@ -78,15 +78,20 @@ s390_base_pgm_handler_fn:
 #
 # Calls diag 308 subcode 1 and continues execution
 #
-# The following conditions must be ensured before calling this function:
-# * Prefix register = 0
-# * Lowcore protection is disabled
-#
 ENTRY(diag308_reset)
 	larl	%r4,.Lctlregs		# Save control registers
 	stctg	%c0,%c15,0(%r4)
+	lg	%r2,0(%r4)		# Disable lowcore protection
+	nilh	%r2,0xefff
+	larl	%r4,.Lctlreg0
+	stg	%r2,0(%r4)
+	lctlg	%c0,%c0,0(%r4)
 	larl	%r4,.Lfpctl		# Floating point control register
 	stfpc	0(%r4)
+	larl	%r4,.Lprefix		# Save prefix register
+	stpx	0(%r4)
+	larl	%r4,.Lprefix_zero	# Set prefix register to 0
+	spx	0(%r4)
 	larl	%r4,.Lcontinue_psw	# Save PSW flags
 	epsw	%r2,%r3
 	stm	%r2,%r3,0(%r4)
@@ -106,6 +111,8 @@ ENTRY(diag308_reset)
 	lctlg	%c0,%c15,0(%r4)
 	larl	%r4,.Lfpctl		# Restore floating point ctl register
 	lfpc	0(%r4)
+	larl	%r4,.Lprefix		# Restore prefix register
+	spx	0(%r4)
 	larl	%r4,.Lcontinue_psw	# Restore PSW flags
 	lpswe	0(%r4)
 .Lcontinue:
@@ -122,10 +129,16 @@ ENTRY(diag308_reset)
 
 	.section .bss
 .align 8
+.Lctlreg0:
+	.quad	0
 .Lctlregs:
 	.rept	16
 	.quad	0
 	.endr
 .Lfpctl:
 	.long	0
+.Lprefix:
+	.long	0
+.Lprefix_zero:
+	.long	0
 	.previous

arch/s390/kernel/crash_dump.c

@@ -44,31 +44,6 @@ static struct memblock_type oldmem_type = {
 
 struct dump_save_areas dump_save_areas;
 
-/*
- * Allocate and add a save area for a CPU
- */
-struct save_area_ext *dump_save_area_create(int cpu)
-{
-	struct save_area_ext **save_areas, *save_area;
-
-	save_area = kmalloc(sizeof(*save_area), GFP_KERNEL);
-	if (!save_area)
-		return NULL;
-	if (cpu + 1 > dump_save_areas.count) {
-		dump_save_areas.count = cpu + 1;
-		save_areas = krealloc(dump_save_areas.areas,
-				      dump_save_areas.count * sizeof(void *),
-				      GFP_KERNEL | __GFP_ZERO);
-		if (!save_areas) {
-			kfree(save_area);
-			return NULL;
-		}
-		dump_save_areas.areas = save_areas;
-	}
-	dump_save_areas.areas[cpu] = save_area;
-	return save_area;
-}
-
 /*
  * Return physical address for virtual address
  */
@@ -416,7 +391,7 @@ static void *nt_s390_vx_low(void *ptr, __vector128 *vx_regs)
 	ptr += len;
 	/* Copy lower halves of SIMD registers 0-15 */
 	for (i = 0; i < 16; i++) {
-		memcpy(ptr, &vx_regs[i], 8);
+		memcpy(ptr, &vx_regs[i].u[2], 8);
 		ptr += 8;
 	}
 	return ptr;

arch/s390/kernel/setup.c

@@ -868,6 +868,11 @@ void __init setup_arch(char **cmdline_p)
 
 	check_initrd();
 	reserve_crashkernel();
+	/*
+	 * Be aware that smp_save_dump_cpus() triggers a system reset.
+	 * Therefore CPU and device initialization should be done afterwards.
+	 */
+	smp_save_dump_cpus();
 
 	setup_resources();
 	setup_vmcoreinfo();

arch/s390/kernel/smp.c

@@ -31,6 +31,7 @@
 #include <linux/cpu.h>
 #include <linux/slab.h>
 #include <linux/crash_dump.h>
+#include <linux/memblock.h>
 #include <asm/asm-offsets.h>
 #include <asm/switch_to.h>
 #include <asm/facility.h>
@@ -69,7 +70,7 @@ struct pcpu {
 	u16 address;			/* physical cpu address */
 };
 
-static u8 boot_cpu_type;
+static u8 boot_core_type;
 static struct pcpu pcpu_devices[NR_CPUS];
 
 unsigned int smp_cpu_mt_shift;
@@ -531,15 +532,12 @@ EXPORT_SYMBOL(smp_ctl_clear_bit);
 
 #ifdef CONFIG_CRASH_DUMP
 
-static inline void __smp_store_cpu_state(int cpu, u16 address, int is_boot_cpu)
+static void __smp_store_cpu_state(struct save_area_ext *sa_ext, u16 address,
+				  int is_boot_cpu)
 {
-	void *lc = pcpu_devices[0].lowcore;
-	struct save_area_ext *sa_ext;
+	void *lc = (void *)(unsigned long) store_prefix();
 	unsigned long vx_sa;
 
-	sa_ext = dump_save_area_create(cpu);
-	if (!sa_ext)
-		panic("could not allocate memory for save area\n");
 	if (is_boot_cpu) {
 		/* Copy the registers of the boot CPU. */
 		copy_oldmem_page(1, (void *) &sa_ext->sa, sizeof(sa_ext->sa),
@@ -554,14 +552,33 @@ static inline void __smp_store_cpu_state(int cpu, u16 address, int is_boot_cpu)
 	if (!MACHINE_HAS_VX)
 		return;
 	/* Get the VX registers */
-	vx_sa = __get_free_page(GFP_KERNEL);
+	vx_sa = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
 	if (!vx_sa)
 		panic("could not allocate memory for VX save area\n");
 	__pcpu_sigp_relax(address, SIGP_STORE_ADDITIONAL_STATUS, vx_sa, NULL);
 	memcpy(sa_ext->vx_regs, (void *) vx_sa, sizeof(sa_ext->vx_regs));
-	free_page(vx_sa);
+	memblock_free(vx_sa, PAGE_SIZE);
 }
 
+int smp_store_status(int cpu)
+{
+	unsigned long vx_sa;
+	struct pcpu *pcpu;
+
+	pcpu = pcpu_devices + cpu;
+	if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
+			      0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
+		return -EIO;
+	if (!MACHINE_HAS_VX)
+		return 0;
+	vx_sa = __pa(pcpu->lowcore->vector_save_area_addr);
+	__pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,
+			  vx_sa, NULL);
+	return 0;
+}
+
+#endif /* CONFIG_CRASH_DUMP */
+
 /*
  * Collect CPU state of the previous, crashed system.
  * There are four cases:
@@ -589,10 +606,12 @@ static inline void __smp_store_cpu_state(int cpu, u16 address, int is_boot_cpu)
  *    old system. The ELF sections are picked up by the crash_dump code
  *    via elfcorehdr_addr.
  */
-static void __init smp_store_cpu_states(struct sclp_cpu_info *info)
+void __init smp_save_dump_cpus(void)
 {
-	unsigned int cpu, address, i, j;
-	int is_boot_cpu;
+#ifdef CONFIG_CRASH_DUMP
+	int addr, cpu, boot_cpu_addr, max_cpu_addr;
+	struct save_area_ext *sa_ext;
+	bool is_boot_cpu;
 
 	if (is_kdump_kernel())
 		/* Previous system stored the CPU states. Nothing to do. */
@@ -602,42 +621,36 @@ static void __init smp_store_cpu_states(struct sclp_cpu_info *info)
 		return;
 	/* Set multi-threading state to the previous system. */
 	pcpu_set_smt(sclp.mtid_prev);
-	/* Collect CPU states. */
-	cpu = 0;
-	for (i = 0; i < info->configured; i++) {
-		/* Skip CPUs with different CPU type. */
-		if (info->has_cpu_type && info->cpu[i].type != boot_cpu_type)
+	max_cpu_addr = SCLP_MAX_CORES << sclp.mtid_prev;
+	for (cpu = 0, addr = 0; addr <= max_cpu_addr; addr++) {
+		if (__pcpu_sigp_relax(addr, SIGP_SENSE, 0, NULL) ==
+		    SIGP_CC_NOT_OPERATIONAL)
 			continue;
-		for (j = 0; j <= smp_cpu_mtid; j++, cpu++) {
-			address = (info->cpu[i].core_id << smp_cpu_mt_shift) + j;
-			is_boot_cpu = (address == pcpu_devices[0].address);
-			if (is_boot_cpu && !OLDMEM_BASE)
-				/* Skip boot CPU for standard zfcp dump. */
-				continue;
-			/* Get state for this CPu. */
-			__smp_store_cpu_state(cpu, address, is_boot_cpu);
-		}
+		cpu += 1;
 	}
-}
-
-int smp_store_status(int cpu)
-{
-	unsigned long vx_sa;
-	struct pcpu *pcpu;
-
-	pcpu = pcpu_devices + cpu;
-	if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
-			      0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
-		return -EIO;
-	if (!MACHINE_HAS_VX)
-		return 0;
-	vx_sa = __pa(pcpu->lowcore->vector_save_area_addr);
-	__pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,
-			  vx_sa, NULL);
-	return 0;
-}
-
+	dump_save_areas.areas = (void *)memblock_alloc(sizeof(void *) * cpu, 8);
+	dump_save_areas.count = cpu;
+	boot_cpu_addr = stap();
+	for (cpu = 0, addr = 0; addr <= max_cpu_addr; addr++) {
+		if (__pcpu_sigp_relax(addr, SIGP_SENSE, 0, NULL) ==
+		    SIGP_CC_NOT_OPERATIONAL)
+			continue;
+		sa_ext = (void *) memblock_alloc(sizeof(*sa_ext), 8);
+		dump_save_areas.areas[cpu] = sa_ext;
+		if (!sa_ext)
+			panic("could not allocate memory for save area\n");
+		is_boot_cpu = (addr == boot_cpu_addr);
+		cpu += 1;
+		if (is_boot_cpu && !OLDMEM_BASE)
+			/* Skip boot CPU for standard zfcp dump. */
+			continue;
+		/* Get state for this CPU. */
+		__smp_store_cpu_state(sa_ext, addr, is_boot_cpu);
+	}
+	diag308_reset();
+	pcpu_set_smt(0);
 #endif /* CONFIG_CRASH_DUMP */
+}
 
 void smp_cpu_set_polarization(int cpu, int val)
 {
@@ -649,21 +662,22 @@ int smp_cpu_get_polarization(int cpu)
 	return pcpu_devices[cpu].polarization;
 }
 
-static struct sclp_cpu_info *smp_get_cpu_info(void)
+static struct sclp_core_info *smp_get_core_info(void)
 {
 	static int use_sigp_detection;
-	struct sclp_cpu_info *info;
+	struct sclp_core_info *info;
 	int address;
 
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
-	if (info && (use_sigp_detection || sclp_get_cpu_info(info))) {
+	if (info && (use_sigp_detection || sclp_get_core_info(info))) {
 		use_sigp_detection = 1;
-		for (address = 0; address <= MAX_CPU_ADDRESS;
+		for (address = 0;
+		     address < (SCLP_MAX_CORES << smp_cpu_mt_shift);
 		     address += (1U << smp_cpu_mt_shift)) {
 			if (__pcpu_sigp_relax(address, SIGP_SENSE, 0, NULL) ==
 			    SIGP_CC_NOT_OPERATIONAL)
 				continue;
-			info->cpu[info->configured].core_id =
+			info->core[info->configured].core_id =
 				address >> smp_cpu_mt_shift;
 			info->configured++;
 		}
@@ -674,7 +688,7 @@ static struct sclp_cpu_info *smp_get_cpu_info(void)
 
 static int smp_add_present_cpu(int cpu);
 
-static int __smp_rescan_cpus(struct sclp_cpu_info *info, int sysfs_add)
+static int __smp_rescan_cpus(struct sclp_core_info *info, int sysfs_add)
 {
 	struct pcpu *pcpu;
 	cpumask_t avail;
@@ -685,9 +699,9 @@ static int __smp_rescan_cpus(struct sclp_cpu_info *info, int sysfs_add)
 	cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
 	cpu = cpumask_first(&avail);
 	for (i = 0; (i < info->combined) && (cpu < nr_cpu_ids); i++) {
-		if (info->has_cpu_type && info->cpu[i].type != boot_cpu_type)
+		if (sclp.has_core_type && info->core[i].type != boot_core_type)
 			continue;
-		address = info->cpu[i].core_id << smp_cpu_mt_shift;
+		address = info->core[i].core_id << smp_cpu_mt_shift;
 		for (j = 0; j <= smp_cpu_mtid; j++) {
 			if (pcpu_find_address(cpu_present_mask, address + j))
 				continue;
@@ -713,41 +727,37 @@ static int __smp_rescan_cpus(struct sclp_cpu_info *info, int sysfs_add)
 static void __init smp_detect_cpus(void)
 {
 	unsigned int cpu, mtid, c_cpus, s_cpus;
-	struct sclp_cpu_info *info;
+	struct sclp_core_info *info;
 	u16 address;
 
 	/* Get CPU information */
-	info = smp_get_cpu_info();
+	info = smp_get_core_info();
 	if (!info)
 		panic("smp_detect_cpus failed to allocate memory\n");
 
 	/* Find boot CPU type */
-	if (info->has_cpu_type) {
+	if (sclp.has_core_type) {
 		address = stap();
 		for (cpu = 0; cpu < info->combined; cpu++)
-			if (info->cpu[cpu].core_id == address) {
+			if (info->core[cpu].core_id == address) {
 				/* The boot cpu dictates the cpu type. */
-				boot_cpu_type = info->cpu[cpu].type;
+				boot_core_type = info->core[cpu].type;
 				break;
 			}
 		if (cpu >= info->combined)
 			panic("Could not find boot CPU type");
 	}
 
-#ifdef CONFIG_CRASH_DUMP
-	/* Collect CPU state of previous system */
-	smp_store_cpu_states(info);
-#endif
-
 	/* Set multi-threading state for the current system */
-	mtid = boot_cpu_type ? sclp.mtid : sclp.mtid_cp;
+	mtid = boot_core_type ? sclp.mtid : sclp.mtid_cp;
 	mtid = (mtid < smp_max_threads) ? mtid : smp_max_threads - 1;
 	pcpu_set_smt(mtid);
 
 	/* Print number of CPUs */
 	c_cpus = s_cpus = 0;
 	for (cpu = 0; cpu < info->combined; cpu++) {
-		if (info->has_cpu_type && info->cpu[cpu].type != boot_cpu_type)
+		if (sclp.has_core_type &&
+		    info->core[cpu].type != boot_core_type)
 			continue;
 		if (cpu < info->configured)
 			c_cpus += smp_cpu_mtid + 1;
@@ -884,7 +894,7 @@ void __init smp_fill_possible_mask(void)
 
 	sclp_max = max(sclp.mtid, sclp.mtid_cp) + 1;
 	sclp_max = min(smp_max_threads, sclp_max);
-	sclp_max = sclp.max_cpu * sclp_max ?: nr_cpu_ids;
+	sclp_max = sclp.max_cores * sclp_max ?: nr_cpu_ids;
 	possible = setup_possible_cpus ?: nr_cpu_ids;
 	possible = min(possible, sclp_max);
 	for (cpu = 0; cpu < possible && cpu < nr_cpu_ids; cpu++)
@@ -977,7 +987,7 @@ static ssize_t cpu_configure_store(struct device *dev,
 	case 0:
 		if (pcpu->state != CPU_STATE_CONFIGURED)
 			break;
-		rc = sclp_cpu_deconfigure(pcpu->address >> smp_cpu_mt_shift);
+		rc = sclp_core_deconfigure(pcpu->address >> smp_cpu_mt_shift);
 		if (rc)
 			break;
 		for (i = 0; i <= smp_cpu_mtid; i++) {
@@ -992,7 +1002,7 @@ static ssize_t cpu_configure_store(struct device *dev,
 	case 1:
 		if (pcpu->state != CPU_STATE_STANDBY)
 			break;
-		rc = sclp_cpu_configure(pcpu->address >> smp_cpu_mt_shift);
+		rc = sclp_core_configure(pcpu->address >> smp_cpu_mt_shift);
 		if (rc)
 			break;
 		for (i = 0; i <= smp_cpu_mtid; i++) {
@@ -1107,10 +1117,10 @@ out:
 
 int __ref smp_rescan_cpus(void)
 {
-	struct sclp_cpu_info *info;
+	struct sclp_core_info *info;
 	int nr;
 
-	info = smp_get_cpu_info();
+	info = smp_get_core_info();
 	if (!info)
 		return -ENOMEM;
 	get_online_cpus();

arch/s390/net/bpf_jit_comp.c

@@ -250,7 +250,7 @@ static inline void reg_set_seen(struct bpf_jit *jit, u32 b1)
 ({								\
 	/* Branch instruction needs 6 bytes */			\
 	int rel = (addrs[i + off + 1] - (addrs[i + 1] - 6)) / 2;\
-	_EMIT6(op1 | reg(b1, b2) << 16 | rel, op2 | mask);	\
+	_EMIT6(op1 | reg(b1, b2) << 16 | (rel & 0xffff), op2 | mask);	\
 	REG_SET_SEEN(b1);					\
 	REG_SET_SEEN(b2);					\
 })

drivers/s390/char/sclp_cmd.c

@@ -92,8 +92,8 @@ struct read_cpu_info_sccb {
 	u8	reserved[4096 - 16];
 } __attribute__((packed, aligned(PAGE_SIZE)));
 
-static void sclp_fill_cpu_info(struct sclp_cpu_info *info,
-			       struct read_cpu_info_sccb *sccb)
+static void sclp_fill_core_info(struct sclp_core_info *info,
+				struct read_cpu_info_sccb *sccb)
 {
 	char *page = (char *) sccb;
 
@@ -101,12 +101,11 @@ static void sclp_fill_cpu_info(struct sclp_cpu_info *info,
 	info->configured = sccb->nr_configured;
 	info->standby = sccb->nr_standby;
 	info->combined = sccb->nr_configured + sccb->nr_standby;
-	info->has_cpu_type = sclp.has_cpu_type;
-	memcpy(&info->cpu, page + sccb->offset_configured,
-	       info->combined * sizeof(struct sclp_cpu_entry));
+	memcpy(&info->core, page + sccb->offset_configured,
+	       info->combined * sizeof(struct sclp_core_entry));
 }
 
-int sclp_get_cpu_info(struct sclp_cpu_info *info)
+int sclp_get_core_info(struct sclp_core_info *info)
 {
 	int rc;
 	struct read_cpu_info_sccb *sccb;
@@ -127,7 +126,7 @@ int sclp_get_cpu_info(struct sclp_cpu_info *info)
 		rc = -EIO;
 		goto out;
 	}
-	sclp_fill_cpu_info(info, sccb);
+	sclp_fill_core_info(info, sccb);
 out:
 	free_page((unsigned long) sccb);
 	return rc;
@@ -137,7 +136,7 @@ struct cpu_configure_sccb {
 	struct sccb_header header;
 } __attribute__((packed, aligned(8)));
 
-static int do_cpu_configure(sclp_cmdw_t cmd)
+static int do_core_configure(sclp_cmdw_t cmd)
 {
 	struct cpu_configure_sccb *sccb;
 	int rc;
@@ -171,14 +170,14 @@ out:
 	return rc;
 }
 
-int sclp_cpu_configure(u8 cpu)
+int sclp_core_configure(u8 core)
 {
-	return do_cpu_configure(SCLP_CMDW_CONFIGURE_CPU | cpu << 8);
+	return do_core_configure(SCLP_CMDW_CONFIGURE_CPU | core << 8);
 }
 
-int sclp_cpu_deconfigure(u8 cpu)
+int sclp_core_deconfigure(u8 core)
 {
-	return do_cpu_configure(SCLP_CMDW_DECONFIGURE_CPU | cpu << 8);
+	return do_core_configure(SCLP_CMDW_DECONFIGURE_CPU | core << 8);
 }
 
 #ifdef CONFIG_MEMORY_HOTPLUG

drivers/s390/char/sclp_early.c

@@ -98,7 +98,7 @@ static int __init sclp_read_info_early(struct read_info_sccb *sccb)
 
 static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
 {
-	struct sclp_cpu_entry *cpue;
+	struct sclp_core_entry *cpue;
 	u16 boot_cpu_address, cpu;
 
 	if (sclp_read_info_early(sccb))
@@ -106,7 +106,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
 
 	sclp.facilities = sccb->facilities;
 	sclp.has_sprp = !!(sccb->fac84 & 0x02);
-	sclp.has_cpu_type = !!(sccb->fac84 & 0x01);
+	sclp.has_core_type = !!(sccb->fac84 & 0x01);
 	if (sccb->fac85 & 0x02)
 		S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
 	sclp.rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;
@@ -116,11 +116,11 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
 
 	if (!sccb->hcpua) {
 		if (MACHINE_IS_VM)
-			sclp.max_cpu = 64;
+			sclp.max_cores = 64;
 		else
-			sclp.max_cpu = sccb->ncpurl;
+			sclp.max_cores = sccb->ncpurl;
 	} else {
-		sclp.max_cpu = sccb->hcpua + 1;
+		sclp.max_cores = sccb->hcpua + 1;
 	}
 
 	boot_cpu_address = stap();

drivers/s390/char/zcore.c

@@ -154,7 +154,7 @@ static int __init init_cpu_info(enum arch_id arch)
 
 	/* get info for boot cpu from lowcore, stored in the HSA */
 
-	sa_ext = dump_save_area_create(0);
+	sa_ext = dump_save_areas.areas[0];
 	if (!sa_ext)
 		return -ENOMEM;
 	if (memcpy_hsa_kernel(&sa_ext->sa, sys_info.sa_base,

drivers/s390/crypto/ap_bus.h

@@ -32,11 +32,13 @@
 
 #define AP_DEVICES 64		/* Number of AP devices. */
 #define AP_DOMAINS 256		/* Number of AP domains. */
-#define AP_MAX_RESET 90		/* Maximum number of resets. */
 #define AP_RESET_TIMEOUT (HZ*0.7)	/* Time in ticks for reset timeouts. */
 #define AP_CONFIG_TIME 30	/* Time in seconds between AP bus rescans. */
 #define AP_POLL_TIME 1		/* Time in ticks between receive polls. */
 
+#define AP_POLL_IMMEDIATELY	1 /* continue running poll tasklet */
+#define AP_POLL_AFTER_TIMEOUT	2 /* run poll tasklet again after timout */
+
 extern int ap_domain_index;
 
 /**
@@ -135,6 +137,14 @@ static inline int ap_test_bit(unsigned int *ptr, unsigned int nr)
 #define AP_RESET_IGNORE	0	/* request timeout will be ignored */
 #define AP_RESET_ARMED	1	/* request timeout timer is active */
 #define AP_RESET_DO	2	/* AP reset required */
+#define AP_RESET_IN_PROGRESS	3	/* AP reset in progress */
+
+/*
+ * AP interrupt states
+ */
+#define AP_INTR_DISABLED	0	/* AP interrupt disabled */
+#define AP_INTR_ENABLED		1	/* AP interrupt enabled */
+#define AP_INTR_IN_PROGRESS	3	/* AP interrupt in progress */
 
 struct ap_device;
 struct ap_message;
@@ -168,6 +178,7 @@ struct ap_device {
 	struct timer_list timeout;	/* Timer for request timeouts. */
 	int reset;			/* Reset required after req. timeout. */
 
+	int interrupt;			/* indicate if interrupts are enabled */
 	int queue_count;		/* # messages currently on AP queue. */
 
 	struct list_head pendingq;	/* List of message sent to AP queue. */

drivers/s390/crypto/zcrypt_cex4.c

@@ -39,7 +39,7 @@
  * But the maximum time limit managed by the stomper code is set to 60sec.
  * Hence we have to wait at least that time period.
  */
-#define CEX4_CLEANUP_TIME	(61*HZ)
+#define CEX4_CLEANUP_TIME	(900*HZ)
 
 static struct ap_device_id zcrypt_cex4_ids[] = {
 	{ AP_DEVICE(AP_DEVICE_TYPE_CEX4)  },