Merge branch 'master' into for-next

Pull linus#master to merge PER_CPU_DEF_ATTRIBUTES and alpha build fix
changes.  As alpha in percpu tree uses 'weak' attribute instead of
inline assembly, there's no need for __used attribute.

Conflicts:
	arch/alpha/include/asm/percpu.h
	arch/mn10300/kernel/vmlinux.lds.S
	include/linux/percpu-defs.h

14 files changed, 141 insertions, 77 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index a14dba0..e577839 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -94,6 +94,7 @@ config S390
 	select HAVE_KVM if 64BIT
 	select HAVE_ARCH_TRACEHOOK
 	select INIT_ALL_POSSIBLE
+	select HAVE_PERF_COUNTERS
 
 source "init/Kconfig"
 
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index d401d56..fcba206 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.30-rc3
-# Thu Apr 23 09:29:52 2009
+# Linux kernel version: 2.6.30
+# Mon Jun 22 11:08:16 2009
 #
 CONFIG_SCHED_MC=y
 CONFIG_MMU=y
@@ -25,6 +25,7 @@ CONFIG_VIRT_CPU_ACCOUNTING=y
 CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
 CONFIG_S390=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+CONFIG_CONSTRUCTORS=y
 
 #
 # General setup
@@ -90,7 +91,6 @@ CONFIG_SYSCTL_SYSCALL=y
 CONFIG_KALLSYMS=y
 # CONFIG_KALLSYMS_ALL is not set
 # CONFIG_KALLSYMS_EXTRA_PASS is not set
-# CONFIG_STRIP_ASM_SYMS is not set
 CONFIG_HOTPLUG=y
 CONFIG_PRINTK=y
 CONFIG_BUG=y
@@ -103,7 +103,14 @@ CONFIG_TIMERFD=y
 CONFIG_EVENTFD=y
 CONFIG_SHMEM=y
 CONFIG_AIO=y
+CONFIG_HAVE_PERF_COUNTERS=y
+
+#
+# Performance Counters
+#
+# CONFIG_PERF_COUNTERS is not set
 CONFIG_VM_EVENT_COUNTERS=y
+# CONFIG_STRIP_ASM_SYMS is not set
 # CONFIG_COMPAT_BRK is not set
 CONFIG_SLAB=y
 # CONFIG_SLUB is not set
@@ -119,6 +126,11 @@ CONFIG_HAVE_KRETPROBES=y
 CONFIG_HAVE_ARCH_TRACEHOOK=y
 CONFIG_USE_GENERIC_SMP_HELPERS=y
 CONFIG_HAVE_DEFAULT_NO_SPIN_MUTEXES=y
+
+#
+# GCOV-based kernel profiling
+#
+# CONFIG_GCOV_KERNEL is not set
 # CONFIG_SLOW_WORK is not set
 # CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
 CONFIG_SLABINFO=y
@@ -150,7 +162,7 @@ CONFIG_DEFAULT_DEADLINE=y
 # CONFIG_DEFAULT_NOOP is not set
 CONFIG_DEFAULT_IOSCHED="deadline"
 CONFIG_PREEMPT_NOTIFIERS=y
-# CONFIG_FREEZER is not set
+CONFIG_FREEZER=y
 
 #
 # Base setup
@@ -199,6 +211,7 @@ CONFIG_ARCH_SPARSEMEM_DEFAULT=y
 CONFIG_ARCH_SELECT_MEMORY_MODEL=y
 CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
 CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
 CONFIG_SELECT_MEMORY_MODEL=y
 # CONFIG_FLATMEM_MANUAL is not set
 # CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -218,9 +231,9 @@ CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_ZONE_DMA_FLAG=1
 CONFIG_BOUNCE=y
 CONFIG_VIRT_TO_BUS=y
-CONFIG_UNEVICTABLE_LRU=y
 CONFIG_HAVE_MLOCK=y
 CONFIG_HAVE_MLOCKED_PAGE_BIT=y
+CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
 
 #
 # I/O subsystem configuration
@@ -257,6 +270,16 @@ CONFIG_KEXEC=y
 # CONFIG_ZFCPDUMP is not set
 CONFIG_S390_GUEST=y
 CONFIG_SECCOMP=y
+
+#
+# Power Management
+#
+CONFIG_PM=y
+# CONFIG_PM_DEBUG is not set
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_PM_SLEEP=y
+CONFIG_HIBERNATION=y
+CONFIG_PM_STD_PARTITION=""
 CONFIG_NET=y
 
 #
@@ -384,6 +407,7 @@ CONFIG_SCTP_HMAC_MD5=y
 # CONFIG_ECONET is not set
 # CONFIG_WAN_ROUTER is not set
 # CONFIG_PHONET is not set
+# CONFIG_IEEE802154 is not set
 CONFIG_NET_SCHED=y
 
 #
@@ -446,6 +470,7 @@ CONFIG_CAN_BCM=m
 # CAN Device Drivers
 #
 CONFIG_CAN_VCAN=m
+# CONFIG_CAN_DEV is not set
 # CONFIG_CAN_DEBUG_DEVICES is not set
 # CONFIG_AF_RXRPC is not set
 # CONFIG_WIMAX is not set
@@ -524,10 +549,6 @@ CONFIG_BLK_DEV_SR=y
 CONFIG_BLK_DEV_SR_VENDOR=y
 CONFIG_CHR_DEV_SG=y
 # CONFIG_CHR_DEV_SCH is not set
-
-#
-# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
-#
 CONFIG_SCSI_MULTI_LUN=y
 CONFIG_SCSI_CONSTANTS=y
 CONFIG_SCSI_LOGGING=y
@@ -578,7 +599,6 @@ CONFIG_DM_MULTIPATH=m
 # CONFIG_DM_DELAY is not set
 # CONFIG_DM_UEVENT is not set
 CONFIG_NETDEVICES=y
-CONFIG_COMPAT_NET_DEV_OPS=y
 # CONFIG_IFB is not set
 CONFIG_DUMMY=m
 CONFIG_BONDING=m
@@ -595,6 +615,7 @@ CONFIG_NET_ETHERNET=y
 # CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
 # CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
 # CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
+# CONFIG_KS8842 is not set
 CONFIG_NETDEV_1000=y
 CONFIG_NETDEV_10000=y
 # CONFIG_TR is not set
@@ -674,6 +695,11 @@ CONFIG_S390_TAPE_34XX=m
 # CONFIG_MONREADER is not set
 CONFIG_MONWRITER=m
 CONFIG_S390_VMUR=m
+
+#
+# PPS support
+#
+# CONFIG_PPS is not set
 # CONFIG_POWER_SUPPLY is not set
 # CONFIG_THERMAL is not set
 # CONFIG_THERMAL_HWMON is not set
@@ -683,6 +709,10 @@ CONFIG_S390_VMUR=m
 # CONFIG_NEW_LEDS is not set
 CONFIG_ACCESSIBILITY=y
 # CONFIG_AUXDISPLAY is not set
+
+#
+# TI VLYNQ
+#
 # CONFIG_STAGING is not set
 
 #
@@ -703,11 +733,12 @@ CONFIG_FS_MBCACHE=y
 # CONFIG_REISERFS_FS is not set
 # CONFIG_JFS_FS is not set
 CONFIG_FS_POSIX_ACL=y
-CONFIG_FILE_LOCKING=y
 # CONFIG_XFS_FS is not set
 # CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
 # CONFIG_BTRFS_FS is not set
+CONFIG_FILE_LOCKING=y
+CONFIG_FSNOTIFY=y
 CONFIG_DNOTIFY=y
 CONFIG_INOTIFY=y
 CONFIG_INOTIFY_USER=y
@@ -865,19 +896,23 @@ CONFIG_DEBUG_MEMORY_INIT=y
 CONFIG_SYSCTL_SYSCALL_CHECK=y
 # CONFIG_DEBUG_PAGEALLOC is not set
 CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FTRACE_SYSCALLS=y
 CONFIG_TRACING_SUPPORT=y
-
-#
-# Tracers
-#
+CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
 # CONFIG_IRQSOFF_TRACER is not set
 # CONFIG_PREEMPT_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
-# CONFIG_CONTEXT_SWITCH_TRACER is not set
-# CONFIG_EVENT_TRACER is not set
+# CONFIG_ENABLE_DEFAULT_TRACERS is not set
+# CONFIG_FTRACE_SYSCALLS is not set
 # CONFIG_BOOT_TRACER is not set
-# CONFIG_TRACE_BRANCH_PROFILING is not set
+CONFIG_BRANCH_PROFILE_NONE=y
+# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
+# CONFIG_PROFILE_ALL_BRANCHES is not set
 # CONFIG_STACK_TRACER is not set
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
@@ -886,6 +921,7 @@ CONFIG_TRACING_SUPPORT=y
 CONFIG_SAMPLES=y
 # CONFIG_SAMPLE_KOBJECT is not set
 # CONFIG_SAMPLE_KPROBES is not set
+# CONFIG_KMEMCHECK is not set
 
 #
 # Security options
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index ec917d4..7a3817a 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -178,7 +178,7 @@ cputime64_to_clock_t(cputime64_t cputime)
 }
 
 struct s390_idle_data {
-	spinlock_t lock;
+	unsigned int sequence;
 	unsigned long long idle_count;
 	unsigned long long idle_enter;
 	unsigned long long idle_time;
diff --git a/arch/s390/include/asm/debug.h b/arch/s390/include/asm/debug.h
index 9450ce6..31ed568 100644
--- a/arch/s390/include/asm/debug.h
+++ b/arch/s390/include/asm/debug.h
@@ -248,14 +248,5 @@ int debug_unregister_view(debug_info_t* id, struct debug_view* view);
 #define PRINT_FATAL(x...) printk ( KERN_DEBUG PRINTK_HEADER x )
 #endif				/* DASD_DEBUG */
 
-#undef DEBUG_MALLOC
-#ifdef DEBUG_MALLOC
-void *b;
-#define kmalloc(x...) (PRINT_INFO(" kmalloc %p\n",b=kmalloc(x)),b)
-#define kfree(x) PRINT_INFO(" kfree %p\n",x);kfree(x)
-#define get_zeroed_page(x...) (PRINT_INFO(" gfp %p\n",b=get_zeroed_page(x)),b)
-#define __get_free_pages(x...) (PRINT_INFO(" gfps %p\n",b=__get_free_pages(x)),b)
-#endif				/* DEBUG_MALLOC */
-
 #endif				/* __KERNEL__ */
 #endif				/* DEBUG_H */
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index a27d0d5..1cd02f6 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -99,7 +99,9 @@ struct kvm_s390_sie_block {
 	__u8	reservedd0[48];		/* 0x00d0 */
 	__u64	gcr[16];		/* 0x0100 */
 	__u64	gbea;			/* 0x0180 */
-	__u8	reserved188[120];	/* 0x0188 */
+	__u8	reserved188[24];	/* 0x0188 */
+	__u32	fac;			/* 0x01a0 */
+	__u8	reserved1a4[92];	/* 0x01a4 */
 } __attribute__((packed));
 
 struct kvm_vcpu_stat {
diff --git a/arch/s390/include/asm/perf_counter.h b/arch/s390/include/asm/perf_counter.h
new file mode 100644
index 0000000..a7205a3
--- /dev/null
+++ b/arch/s390/include/asm/perf_counter.h
@@ -0,0 +1,8 @@
+/*
+ * Performance counter support - s390 specific definitions.
+ *
+ * Copyright 2009 Martin Schwidefsky, IBM Corporation.
+ */
+
+static inline void set_perf_counter_pending(void) {}
+static inline void clear_perf_counter_pending(void) {}
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 402d6dc..79d849f 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -380,7 +380,7 @@ extern int qdio_establish(struct qdio_initialize *);
 extern int qdio_activate(struct ccw_device *);
 
 extern int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
-		   int q_nr, int bufnr, int count);
+		   int q_nr, unsigned int bufnr, unsigned int count);
 extern int qdio_cleanup(struct ccw_device*, int);
 extern int qdio_shutdown(struct ccw_device*, int);
 extern int qdio_free(struct ccw_device *);
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 9bb2f62..86783ef 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -154,39 +154,35 @@ void __kprobes get_instruction_type(struct arch_specific_insn *ainsn)
 
 static int __kprobes swap_instruction(void *aref)
 {
+	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+	unsigned long status = kcb->kprobe_status;
 	struct ins_replace_args *args = aref;
+	int rc;
 
-	return probe_kernel_write(args->ptr, &args->new, sizeof(args->new));
+	kcb->kprobe_status = KPROBE_SWAP_INST;
+	rc = probe_kernel_write(args->ptr, &args->new, sizeof(args->new));
+	kcb->kprobe_status = status;
+	return rc;
 }
 
 void __kprobes arch_arm_kprobe(struct kprobe *p)
 {
-	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
-	unsigned long status = kcb->kprobe_status;
 	struct ins_replace_args args;
 
 	args.ptr = p->addr;
 	args.old = p->opcode;
 	args.new = BREAKPOINT_INSTRUCTION;
-
-	kcb->kprobe_status = KPROBE_SWAP_INST;
 	stop_machine(swap_instruction, &args, NULL);
-	kcb->kprobe_status = status;
 }
 
 void __kprobes arch_disarm_kprobe(struct kprobe *p)
 {
-	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
-	unsigned long status = kcb->kprobe_status;
 	struct ins_replace_args args;
 
 	args.ptr = p->addr;
 	args.old = BREAKPOINT_INSTRUCTION;
 	args.new = p->opcode;
-
-	kcb->kprobe_status = KPROBE_SWAP_INST;
 	stop_machine(swap_instruction, &args, NULL);
-	kcb->kprobe_status = status;
 }
 
 void __kprobes arch_remove_kprobe(struct kprobe *p)
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index fd8e311..2270730 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -856,13 +856,20 @@ static ssize_t show_idle_count(struct sys_device *dev,
 {
 	struct s390_idle_data *idle;
 	unsigned long long idle_count;
+	unsigned int sequence;
 
 	idle = &per_cpu(s390_idle, dev->id);
-	spin_lock(&idle->lock);
+repeat:
+	sequence = idle->sequence;
+	smp_rmb();
+	if (sequence & 1)
+		goto repeat;
 	idle_count = idle->idle_count;
 	if (idle->idle_enter)
 		idle_count++;
-	spin_unlock(&idle->lock);
+	smp_rmb();
+	if (idle->sequence != sequence)
+		goto repeat;
 	return sprintf(buf, "%llu\n", idle_count);
 }
 static SYSDEV_ATTR(idle_count, 0444, show_idle_count, NULL);
@@ -872,15 +879,22 @@ static ssize_t show_idle_time(struct sys_device *dev,
 {
 	struct s390_idle_data *idle;
 	unsigned long long now, idle_time, idle_enter;
+	unsigned int sequence;
 
 	idle = &per_cpu(s390_idle, dev->id);
-	spin_lock(&idle->lock);
 	now = get_clock();
+repeat:
+	sequence = idle->sequence;
+	smp_rmb();
+	if (sequence & 1)
+		goto repeat;
 	idle_time = idle->idle_time;
 	idle_enter = idle->idle_enter;
 	if (idle_enter != 0ULL && idle_enter < now)
 		idle_time += now - idle_enter;
-	spin_unlock(&idle->lock);
+	smp_rmb();
+	if (idle->sequence != sequence)
+		goto repeat;
 	return sprintf(buf, "%llu\n", idle_time >> 12);
 }
 static SYSDEV_ATTR(idle_time_us, 0444, show_idle_time, NULL);
@@ -908,11 +922,7 @@ static int __cpuinit smp_cpu_notify(struct notifier_block *self,
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
 		idle = &per_cpu(s390_idle, cpu);
-		spin_lock_irq(&idle->lock);
-		idle->idle_enter = 0;
-		idle->idle_time = 0;
-		idle->idle_count = 0;
-		spin_unlock_irq(&idle->lock);
+		memset(idle, 0, sizeof(struct s390_idle_data));
 		if (sysfs_create_group(&s->kobj, &cpu_online_attr_group))
 			return NOTIFY_BAD;
 		break;
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 215330a..d4c8e9c 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -36,7 +36,6 @@
 #include <linux/notifier.h>
 #include <linux/clocksource.h>
 #include <linux/clockchips.h>
-#include <linux/bootmem.h>
 #include <asm/uaccess.h>
 #include <asm/delay.h>
 #include <asm/s390_ext.h>
@@ -62,9 +61,6 @@
 
 u64 sched_clock_base_cc = -1;	/* Force to data section. */
 
-static ext_int_info_t ext_int_info_cc;
-static ext_int_info_t ext_int_etr_cc;
-
 static DEFINE_PER_CPU(struct clock_event_device, comparators);
 
 /*
@@ -255,15 +251,11 @@ void __init time_init(void)
 	stp_reset();
 
 	/* request the clock comparator external interrupt */
-	if (register_early_external_interrupt(0x1004,
-					      clock_comparator_interrupt,
-					      &ext_int_info_cc) != 0)
+	if (register_external_interrupt(0x1004, clock_comparator_interrupt))
                 panic("Couldn't request external interrupt 0x1004");
 
 	/* request the timing alert external interrupt */
-	if (register_early_external_interrupt(0x1406,
-					      timing_alert_interrupt,
-					      &ext_int_etr_cc) != 0)
+	if (register_external_interrupt(0x1406, timing_alert_interrupt))
 		panic("Couldn't request external interrupt 0x1406");
 
 	if (clocksource_register(&clocksource_tod) != 0)
@@ -1445,14 +1437,14 @@ static void __init stp_reset(void)
 {
 	int rc;
 
-	stp_page = alloc_bootmem_pages(PAGE_SIZE);
+	stp_page = (void *) get_zeroed_page(GFP_ATOMIC);
 	rc = chsc_sstpc(stp_page, STP_OP_CTRL, 0x0000);
 	if (rc == 0)
 		set_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags);
 	else if (stp_online) {
 		pr_warning("The real or virtual hardware system does "
 			   "not provide an STP interface\n");
-		free_bootmem((unsigned long) stp_page, PAGE_SIZE);
+		free_page((unsigned long) stp_page);
 		stp_page = NULL;
 		stp_online = 0;
 	}
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index c8eb725..c41bb0d 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -25,13 +25,9 @@
 #include <asm/irq_regs.h>
 #include <asm/cputime.h>
 
-static ext_int_info_t ext_int_info_timer;
-
 static DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
 
-DEFINE_PER_CPU(struct s390_idle_data, s390_idle) = {
-	.lock = __SPIN_LOCK_UNLOCKED(s390_idle.lock)
-};
+DEFINE_PER_CPU(struct s390_idle_data, s390_idle);
 
 static inline __u64 get_vtimer(void)
 {
@@ -153,11 +149,13 @@ void vtime_start_cpu(void)
 		vq->elapsed -= vq->idle - S390_lowcore.async_enter_timer;
 	}
 
-	spin_lock(&idle->lock);
+	idle->sequence++;
+	smp_wmb();
 	idle->idle_time += idle_time;
 	idle->idle_enter = 0ULL;
 	idle->idle_count++;
-	spin_unlock(&idle->lock);
+	smp_wmb();
+	idle->sequence++;
 }
 
 void vtime_stop_cpu(void)
@@ -244,15 +242,23 @@ cputime64_t s390_get_idle_time(int cpu)
 {
 	struct s390_idle_data *idle;
 	unsigned long long now, idle_time, idle_enter;
+	unsigned int sequence;
 
 	idle = &per_cpu(s390_idle, cpu);
-	spin_lock(&idle->lock);
+
 	now = get_clock();
+repeat:
+	sequence = idle->sequence;
+	smp_rmb();
+	if (sequence & 1)
+		goto repeat;
 	idle_time = 0;
 	idle_enter = idle->idle_enter;
 	if (idle_enter != 0ULL && idle_enter < now)
 		idle_time = now - idle_enter;
-	spin_unlock(&idle->lock);
+	smp_rmb();
+	if (idle->sequence != sequence)
+		goto repeat;
 	return idle_time;
 }
 
@@ -557,8 +563,7 @@ void init_cpu_vtimer(void)
 void __init vtime_init(void)
 {
 	/* request the cpu timer external interrupt */
-	if (register_early_external_interrupt(0x1005, do_cpu_timer_interrupt,
-					      &ext_int_info_timer) != 0)
+	if (register_external_interrupt(0x1005, do_cpu_timer_interrupt))
 		panic("Couldn't request external interrupt 0x1005");
 
 	/* Enable cpu timer interrupts on the boot cpu. */
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index c18b21d..90d9d1b 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -25,6 +25,7 @@
 #include <asm/lowcore.h>
 #include <asm/pgtable.h>
 #include <asm/nmi.h>
+#include <asm/system.h>
 #include "kvm-s390.h"
 #include "gaccess.h"
 
@@ -69,6 +70,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
 	{ NULL }
 };
 
+static unsigned long long *facilities;
 
 /* Section: not file related */
 void kvm_arch_hardware_enable(void *garbage)
@@ -288,6 +290,7 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 	vcpu->arch.sie_block->gmsor = vcpu->kvm->arch.guest_origin;
 	vcpu->arch.sie_block->ecb   = 2;
 	vcpu->arch.sie_block->eca   = 0xC1002001U;
+	vcpu->arch.sie_block->fac   = (int) (long) facilities;
 	hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
 	tasklet_init(&vcpu->arch.tasklet, kvm_s390_tasklet,
 		     (unsigned long) vcpu);
@@ -739,11 +742,29 @@ gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
 
 static int __init kvm_s390_init(void)
 {
-	return kvm_init(NULL, sizeof(struct kvm_vcpu), THIS_MODULE);
+	int ret;
+	ret = kvm_init(NULL, sizeof(struct kvm_vcpu), THIS_MODULE);
+	if (ret)
+		return ret;
+
+	/*
+	 * guests can ask for up to 255+1 double words, we need a full page
+	 * to hold the maximum amount of facilites. On the other hand, we
+	 * only set facilities that are known to work in KVM.
+	 */
+	facilities = (unsigned long long *) get_zeroed_page(GFP_DMA);
+	if (!facilities) {
+		kvm_exit();
+		return -ENOMEM;
+	}
+	stfle(facilities, 1);
+	facilities[0] &= 0xff00fff3f0700000ULL;
+	return 0;
 }
 
 static void __exit kvm_s390_exit(void)
 {
+	free_page((unsigned long) facilities);
 	kvm_exit();
 }
 
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 93ecd06..d426aac 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -158,7 +158,7 @@ static int handle_stfl(struct kvm_vcpu *vcpu)
 
 	vcpu->stat.instruction_stfl++;
 	/* only pass the facility bits, which we can handle */
-	facility_list &= 0xfe00fff3;
+	facility_list &= 0xff00fff3;
 
 	rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list),
 			   &facility_list, sizeof(facility_list));
diff --git a/arch/s390/power/swsusp_asm64.S b/arch/s390/power/swsusp_asm64.S
index 3c74e7d..76d688d 100644
--- a/arch/s390/power/swsusp_asm64.S
+++ b/arch/s390/power/swsusp_asm64.S
@@ -109,10 +109,11 @@ swsusp_arch_resume:
 	aghi	%r15,-STACK_FRAME_OVERHEAD
 	stg	%r1,__SF_BACKCHAIN(%r15)
 
+#ifdef CONFIG_SMP
 	/* Save boot cpu number */
 	brasl	%r14,smp_get_phys_cpu_id
 	lgr	%r10,%r2
-
+#endif
 	/* Deactivate DAT */
 	stnsm	__SF_EMPTY(%r15),0xfb
 
@@ -177,11 +178,12 @@ swsusp_arch_resume:
 	/* Pointer to save arae */
 	lghi	%r13,0x1000
 
+#ifdef CONFIG_SMP
 	/* Switch CPUs */
 	lgr	%r2,%r10		/* get cpu id */
 	llgf	%r3,0x318(%r13)
 	brasl	%r14,smp_switch_boot_cpu_in_resume
-
+#endif
 	/* Restore prefix register */
 	spx	0x318(%r13)