Merge branch 'linus' into core/generic-dma-coherent

Conflicts:

	arch/x86/Kconfig

Signed-off-by: Ingo Molnar <mingo@elte.hu>

15 files changed, 167 insertions, 163 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index eb530b4128ba..2ed88122be93 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -565,6 +565,7 @@ bool "s390 guest support (EXPERIMENTAL)"
         depends on 64BIT && EXPERIMENTAL
         select VIRTIO
         select VIRTIO_RING
+        select VIRTIO_CONSOLE
         help
           Select this option if you want to run the kernel under s390 linux
 endmenu
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 288ad490a6dd..569079ec4ff0 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -197,7 +197,7 @@ void __kprobes arch_arm_kprobe(struct kprobe *p)
         args.new = BREAKPOINT_INSTRUCTION;
 
         kcb->kprobe_status = KPROBE_SWAP_INST;
-        stop_machine_run(swap_instruction, &args, NR_CPUS);
+        stop_machine(swap_instruction, &args, NULL);
         kcb->kprobe_status = status;
 }
 
@@ -212,7 +212,7 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
         args.new = p->opcode;
 
         kcb->kprobe_status = KPROBE_SWAP_INST;
-        stop_machine_run(swap_instruction, &args, NR_CPUS);
+        stop_machine(swap_instruction, &args, NULL);
         kcb->kprobe_status = status;
 }
 
@@ -270,7 +270,6 @@ static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
         __ctl_store(kcb->kprobe_saved_ctl, 9, 11);
 }
 
-/* Called with kretprobe_lock held */
 void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
                                         struct pt_regs *regs)
 {
@@ -332,7 +331,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
                  * No kprobe at this address. The fault has not been
                  * caused by a kprobe breakpoint. The race of breakpoint
                  * vs. kprobe remove does not exist because on s390 we
-                 * use stop_machine_run to arm/disarm the breakpoints.
+                 * use stop_machine to arm/disarm the breakpoints.
                  */
                 goto no_kprobe;
 
@@ -377,8 +376,7 @@ static int __kprobes trampoline_probe_handler(struct kprobe *p,
         unsigned long trampoline_address = (unsigned long)&kretprobe_trampoline;
 
         INIT_HLIST_HEAD(&empty_rp);
-        spin_lock_irqsave(&kretprobe_lock, flags);
-        head = kretprobe_inst_table_head(current);
+        kretprobe_hash_lock(current, &head, &flags);
 
         /*
          * It is possible to have multiple instances associated with a given
@@ -417,7 +415,7 @@ static int __kprobes trampoline_probe_handler(struct kprobe *p,
         regs->psw.addr = orig_ret_address | PSW_ADDR_AMODE;
 
         reset_current_kprobe();
-        spin_unlock_irqrestore(&kretprobe_lock, flags);
+        kretprobe_hash_unlock(current, &flags);
         preempt_enable_no_resched();
 
         hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) {
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 85defd01d293..9839767d0842 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -142,7 +142,7 @@ static void default_idle(void)
 void cpu_idle(void)
 {
         for (;;) {
-                tick_nohz_stop_sched_tick();
+                tick_nohz_stop_sched_tick(1);
                 while (!need_resched())
                         default_idle();
                 tick_nohz_restart_sched_tick();
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index b358e18273b0..62122bad1e33 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -54,6 +54,7 @@
 #include <asm/sections.h>
 #include <asm/ebcdic.h>
 #include <asm/compat.h>
+#include <asm/kvm_virtio.h>
 
 long psw_kernel_bits    = (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_PRIMARY |
                            PSW_MASK_MCHECK | PSW_DEFAULT_KEY);
@@ -766,7 +767,8 @@ setup_arch(char **cmdline_p)
                 printk("We are running under VM (64 bit mode)\n");
         else if (MACHINE_IS_KVM) {
                 printk("We are running under KVM (64 bit mode)\n");
-                add_preferred_console("ttyS", 1, NULL);
+                add_preferred_console("hvc", 0, NULL);
+                s390_virtio_console_init();
         } else
                 printk("We are running native (64 bit mode)\n");
 #endif /* CONFIG_64BIT */
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index b6781030cfbd..b795b3e24afd 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -864,7 +864,8 @@ int setup_profiling_timer(unsigned int multiplier)
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static ssize_t cpu_configure_show(struct sys_device *dev, char *buf)
+static ssize_t cpu_configure_show(struct sys_device *dev,
+                                struct sysdev_attribute *attr, char *buf)
 {
         ssize_t count;
 
@@ -874,8 +875,9 @@ static ssize_t cpu_configure_show(struct sys_device *dev, char *buf)
         return count;
 }
 
-static ssize_t cpu_configure_store(struct sys_device *dev, const char *buf,
-                                   size_t count)
+static ssize_t cpu_configure_store(struct sys_device *dev,
+                                  struct sysdev_attribute *attr,
+                                  const char *buf, size_t count)
 {
         int cpu = dev->id;
         int val, rc;
@@ -922,7 +924,8 @@ out:
 static SYSDEV_ATTR(configure, 0644, cpu_configure_show, cpu_configure_store);
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static ssize_t cpu_polarization_show(struct sys_device *dev, char *buf)
+static ssize_t cpu_polarization_show(struct sys_device *dev,
+                                     struct sysdev_attribute *attr, char *buf)
 {
         int cpu = dev->id;
         ssize_t count;
@@ -950,7 +953,8 @@ static ssize_t cpu_polarization_show(struct sys_device *dev, char *buf)
 }
 static SYSDEV_ATTR(polarization, 0444, cpu_polarization_show, NULL);
 
-static ssize_t show_cpu_address(struct sys_device *dev, char *buf)
+static ssize_t show_cpu_address(struct sys_device *dev,
+                                struct sysdev_attribute *attr, char *buf)
 {
         return sprintf(buf, "%d\n", __cpu_logical_map[dev->id]);
 }
@@ -970,7 +974,8 @@ static struct attribute_group cpu_common_attr_group = {
         .attrs = cpu_common_attrs,
 };
 
-static ssize_t show_capability(struct sys_device *dev, char *buf)
+static ssize_t show_capability(struct sys_device *dev,
+                                struct sysdev_attribute *attr, char *buf)
 {
         unsigned int capability;
         int rc;
@@ -982,7 +987,8 @@ static ssize_t show_capability(struct sys_device *dev, char *buf)
 }
 static SYSDEV_ATTR(capability, 0444, show_capability, NULL);
 
-static ssize_t show_idle_count(struct sys_device *dev, char *buf)
+static ssize_t show_idle_count(struct sys_device *dev,
+                                struct sysdev_attribute *attr, char *buf)
 {
         struct s390_idle_data *idle;
         unsigned long long idle_count;
@@ -995,7 +1001,8 @@ static ssize_t show_idle_count(struct sys_device *dev, char *buf)
 }
 static SYSDEV_ATTR(idle_count, 0444, show_idle_count, NULL);
 
-static ssize_t show_idle_time(struct sys_device *dev, char *buf)
+static ssize_t show_idle_time(struct sys_device *dev,
+                                struct sysdev_attribute *attr, char *buf)
 {
         struct s390_idle_data *idle;
         unsigned long long new_time;
@@ -1112,7 +1119,9 @@ out:
         return rc;
 }
 
-static ssize_t __ref rescan_store(struct sys_device *dev, const char *buf,
+static ssize_t __ref rescan_store(struct sys_device *dev,
+                                  struct sysdev_attribute *attr,
+                                  const char *buf,
                                   size_t count)
 {
         int rc;
@@ -1123,7 +1132,9 @@ static ssize_t __ref rescan_store(struct sys_device *dev, const char *buf,
 static SYSDEV_ATTR(rescan, 0200, NULL, rescan_store);
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static ssize_t dispatching_show(struct sys_device *dev, char *buf)
+static ssize_t dispatching_show(struct sys_device *dev,
+                                struct sysdev_attribute *attr,
+                                char *buf)
 {
         ssize_t count;
 
@@ -1133,8 +1144,9 @@ static ssize_t dispatching_show(struct sys_device *dev, char *buf)
         return count;
 }
 
-static ssize_t dispatching_store(struct sys_device *dev, const char *buf,
-                                 size_t count)
+static ssize_t dispatching_store(struct sys_device *dev,
+                                 struct sysdev_attribute *attr,
+                                 const char *buf, size_t count)
 {
         int val, rc;
         char delim;
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index f2cede3947b2..ab70d9bd9261 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -1100,7 +1100,9 @@ static inline struct etr_aib *etr_aib_from_dev(struct sys_device *dev)
                 return etr_port1_online ? &etr_port1 : NULL;
 }
 
-static ssize_t etr_online_show(struct sys_device *dev, char *buf)
+static ssize_t etr_online_show(struct sys_device *dev,
+                                struct sysdev_attribute *attr,
+                                char *buf)
 {
         unsigned int online;
 
@@ -1109,7 +1111,8 @@ static ssize_t etr_online_show(struct sys_device *dev, char *buf)
 }
 
 static ssize_t etr_online_store(struct sys_device *dev,
-                              const char *buf, size_t count)
+                                struct sysdev_attribute *attr,
+                                const char *buf, size_t count)
 {
         unsigned int value;
 
@@ -1136,7 +1139,9 @@ static ssize_t etr_online_store(struct sys_device *dev,
 
 static SYSDEV_ATTR(online, 0600, etr_online_show, etr_online_store);
 
-static ssize_t etr_stepping_control_show(struct sys_device *dev, char *buf)
+static ssize_t etr_stepping_control_show(struct sys_device *dev,
+                                        struct sysdev_attribute *attr,
+                                        char *buf)
 {
         return sprintf(buf, "%i\n", (dev == &etr_port0_dev) ?
                        etr_eacr.e0 : etr_eacr.e1);
@@ -1144,7 +1149,8 @@ static ssize_t etr_stepping_control_show(struct sys_device *dev, char *buf)
 
 static SYSDEV_ATTR(stepping_control, 0400, etr_stepping_control_show, NULL);
 
-static ssize_t etr_mode_code_show(struct sys_device *dev, char *buf)
+static ssize_t etr_mode_code_show(struct sys_device *dev,
+                                struct sysdev_attribute *attr, char *buf)
 {
         if (!etr_port0_online && !etr_port1_online)
                 /* Status word is not uptodate if both ports are offline. */
@@ -1155,7 +1161,8 @@ static ssize_t etr_mode_code_show(struct sys_device *dev, char *buf)
 
 static SYSDEV_ATTR(state_code, 0400, etr_mode_code_show, NULL);
 
-static ssize_t etr_untuned_show(struct sys_device *dev, char *buf)
+static ssize_t etr_untuned_show(struct sys_device *dev,
+                                struct sysdev_attribute *attr, char *buf)
 {
         struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1166,7 +1173,8 @@ static ssize_t etr_untuned_show(struct sys_device *dev, char *buf)
 
 static SYSDEV_ATTR(untuned, 0400, etr_untuned_show, NULL);
 
-static ssize_t etr_network_id_show(struct sys_device *dev, char *buf)
+static ssize_t etr_network_id_show(struct sys_device *dev,
+                                struct sysdev_attribute *attr, char *buf)
 {
         struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1177,7 +1185,8 @@ static ssize_t etr_network_id_show(struct sys_device *dev, char *buf)
 
 static SYSDEV_ATTR(network, 0400, etr_network_id_show, NULL);
 
-static ssize_t etr_id_show(struct sys_device *dev, char *buf)
+static ssize_t etr_id_show(struct sys_device *dev,
+                        struct sysdev_attribute *attr, char *buf)
 {
         struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1188,7 +1197,8 @@ static ssize_t etr_id_show(struct sys_device *dev, char *buf)
 
 static SYSDEV_ATTR(id, 0400, etr_id_show, NULL);
 
-static ssize_t etr_port_number_show(struct sys_device *dev, char *buf)
+static ssize_t etr_port_number_show(struct sys_device *dev,
+                        struct sysdev_attribute *attr, char *buf)
 {
         struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1199,7 +1209,8 @@ static ssize_t etr_port_number_show(struct sys_device *dev, char *buf)
 
 static SYSDEV_ATTR(port, 0400, etr_port_number_show, NULL);
 
-static ssize_t etr_coupled_show(struct sys_device *dev, char *buf)
+static ssize_t etr_coupled_show(struct sys_device *dev,
+                        struct sysdev_attribute *attr, char *buf)
 {
         struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1210,7 +1221,8 @@ static ssize_t etr_coupled_show(struct sys_device *dev, char *buf)
 
 static SYSDEV_ATTR(coupled, 0400, etr_coupled_show, NULL);
 
-static ssize_t etr_local_time_show(struct sys_device *dev, char *buf)
+static ssize_t etr_local_time_show(struct sys_device *dev,
+                        struct sysdev_attribute *attr, char *buf)
 {
         struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1221,7 +1233,8 @@ static ssize_t etr_local_time_show(struct sys_device *dev, char *buf)
 
 static SYSDEV_ATTR(local_time, 0400, etr_local_time_show, NULL);
 
-static ssize_t etr_utc_offset_show(struct sys_device *dev, char *buf)
+static ssize_t etr_utc_offset_show(struct sys_device *dev,
+                        struct sysdev_attribute *attr, char *buf)
 {
         struct etr_aib *aib = etr_aib_from_dev(dev);
 
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 212d618b0095..632b13e10053 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -9,7 +9,6 @@
 #include <linux/device.h>
 #include <linux/bootmem.h>
 #include <linux/sched.h>
-#include <linux/kthread.h>
 #include <linux/workqueue.h>
 #include <linux/cpu.h>
 #include <linux/smp.h>
@@ -230,20 +229,9 @@ void arch_update_cpu_topology(void)
         }
 }
 
-static int topology_kthread(void *data)
-{
-        arch_reinit_sched_domains();
-        return 0;
-}
-
 static void topology_work_fn(struct work_struct *work)
 {
-        /* We can't call arch_reinit_sched_domains() from a multi-threaded
-         * workqueue context since it may deadlock in case of cpu hotplug.
-         * So we have to create a kernel thread in order to call
-         * arch_reinit_sched_domains().
-         */
-        kthread_run(topology_kthread, NULL, "topology_update");
+        arch_reinit_sched_domains();
 }
 
 void topology_schedule_update(void)
diff --git a/arch/s390/kvm/gaccess.h b/arch/s390/kvm/gaccess.h
index 4e0633c413f3..ed60f3a74a85 100644
--- a/arch/s390/kvm/gaccess.h
+++ b/arch/s390/kvm/gaccess.h
@@ -18,11 +18,11 @@
 #include <asm/uaccess.h>
 
 static inline void __user *__guestaddr_to_user(struct kvm_vcpu *vcpu,
-                                               u64 guestaddr)
+                                               unsigned long guestaddr)
 {
-        u64 prefix  = vcpu->arch.sie_block->prefix;
-        u64 origin  = vcpu->kvm->arch.guest_origin;
-        u64 memsize = vcpu->kvm->arch.guest_memsize;
+        unsigned long prefix  = vcpu->arch.sie_block->prefix;
+        unsigned long origin  = vcpu->kvm->arch.guest_origin;
+        unsigned long memsize = vcpu->kvm->arch.guest_memsize;
 
         if (guestaddr < 2 * PAGE_SIZE)
                 guestaddr += prefix;
@@ -37,7 +37,7 @@ static inline void __user *__guestaddr_to_user(struct kvm_vcpu *vcpu,
         return (void __user *) guestaddr;
 }
 
-static inline int get_guest_u64(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int get_guest_u64(struct kvm_vcpu *vcpu, unsigned long guestaddr,
                                 u64 *result)
 {
         void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -47,10 +47,10 @@ static inline int get_guest_u64(struct kvm_vcpu *vcpu, u64 guestaddr,
         if (IS_ERR((void __force *) uptr))
                 return PTR_ERR((void __force *) uptr);
 
-        return get_user(*result, (u64 __user *) uptr);
+        return get_user(*result, (unsigned long __user *) uptr);
 }
 
-static inline int get_guest_u32(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int get_guest_u32(struct kvm_vcpu *vcpu, unsigned long guestaddr,
                                 u32 *result)
 {
         void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -63,7 +63,7 @@ static inline int get_guest_u32(struct kvm_vcpu *vcpu, u64 guestaddr,
         return get_user(*result, (u32 __user *) uptr);
 }
 
-static inline int get_guest_u16(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int get_guest_u16(struct kvm_vcpu *vcpu, unsigned long guestaddr,
                                 u16 *result)
 {
         void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -76,7 +76,7 @@ static inline int get_guest_u16(struct kvm_vcpu *vcpu, u64 guestaddr,
         return get_user(*result, (u16 __user *) uptr);
 }
 
-static inline int get_guest_u8(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int get_guest_u8(struct kvm_vcpu *vcpu, unsigned long guestaddr,
                                u8 *result)
 {
         void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -87,7 +87,7 @@ static inline int get_guest_u8(struct kvm_vcpu *vcpu, u64 guestaddr,
         return get_user(*result, (u8 __user *) uptr);
 }
 
-static inline int put_guest_u64(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int put_guest_u64(struct kvm_vcpu *vcpu, unsigned long guestaddr,
                                 u64 value)
 {
         void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -100,7 +100,7 @@ static inline int put_guest_u64(struct kvm_vcpu *vcpu, u64 guestaddr,
         return put_user(value, (u64 __user *) uptr);
 }
 
-static inline int put_guest_u32(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int put_guest_u32(struct kvm_vcpu *vcpu, unsigned long guestaddr,
                                 u32 value)
 {
         void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -113,7 +113,7 @@ static inline int put_guest_u32(struct kvm_vcpu *vcpu, u64 guestaddr,
         return put_user(value, (u32 __user *) uptr);
 }
 
-static inline int put_guest_u16(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int put_guest_u16(struct kvm_vcpu *vcpu, unsigned long guestaddr,
                                 u16 value)
 {
         void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -126,7 +126,7 @@ static inline int put_guest_u16(struct kvm_vcpu *vcpu, u64 guestaddr,
         return put_user(value, (u16 __user *) uptr);
 }
 
-static inline int put_guest_u8(struct kvm_vcpu *vcpu, u64 guestaddr,
+static inline int put_guest_u8(struct kvm_vcpu *vcpu, unsigned long guestaddr,
                                u8 value)
 {
         void __user *uptr = __guestaddr_to_user(vcpu, guestaddr);
@@ -138,7 +138,8 @@ static inline int put_guest_u8(struct kvm_vcpu *vcpu, u64 guestaddr,
 }
 
 
-static inline int __copy_to_guest_slow(struct kvm_vcpu *vcpu, u64 guestdest,
+static inline int __copy_to_guest_slow(struct kvm_vcpu *vcpu,
+                                       unsigned long guestdest,
                                        const void *from, unsigned long n)
 {
         int rc;
@@ -153,12 +154,12 @@ static inline int __copy_to_guest_slow(struct kvm_vcpu *vcpu, u64 guestdest,
         return 0;
 }
 
-static inline int copy_to_guest(struct kvm_vcpu *vcpu, u64 guestdest,
+static inline int copy_to_guest(struct kvm_vcpu *vcpu, unsigned long guestdest,
                                 const void *from, unsigned long n)
 {
-        u64 prefix  = vcpu->arch.sie_block->prefix;
-        u64 origin  = vcpu->kvm->arch.guest_origin;
-        u64 memsize = vcpu->kvm->arch.guest_memsize;
+        unsigned long prefix  = vcpu->arch.sie_block->prefix;
+        unsigned long origin  = vcpu->kvm->arch.guest_origin;
+        unsigned long memsize = vcpu->kvm->arch.guest_memsize;
 
         if ((guestdest < 2 * PAGE_SIZE) && (guestdest + n > 2 * PAGE_SIZE))
                 goto slowpath;
@@ -189,7 +190,8 @@ slowpath:
 }
 
 static inline int __copy_from_guest_slow(struct kvm_vcpu *vcpu, void *to,
-                                         u64 guestsrc, unsigned long n)
+                                         unsigned long guestsrc,
+                                         unsigned long n)
 {
         int rc;
         unsigned long i;
@@ -204,11 +206,11 @@ static inline int __copy_from_guest_slow(struct kvm_vcpu *vcpu, void *to,
 }
 
 static inline int copy_from_guest(struct kvm_vcpu *vcpu, void *to,
-                                  u64 guestsrc, unsigned long n)
+                                  unsigned long guestsrc, unsigned long n)
 {
-        u64 prefix  = vcpu->arch.sie_block->prefix;
-        u64 origin  = vcpu->kvm->arch.guest_origin;
-        u64 memsize = vcpu->kvm->arch.guest_memsize;
+        unsigned long prefix  = vcpu->arch.sie_block->prefix;
+        unsigned long origin  = vcpu->kvm->arch.guest_origin;
+        unsigned long memsize = vcpu->kvm->arch.guest_memsize;
 
         if ((guestsrc < 2 * PAGE_SIZE) && (guestsrc + n > 2 * PAGE_SIZE))
                 goto slowpath;
@@ -238,11 +240,12 @@ slowpath:
         return __copy_from_guest_slow(vcpu, to, guestsrc, n);
 }
 
-static inline int copy_to_guest_absolute(struct kvm_vcpu *vcpu, u64 guestdest,
+static inline int copy_to_guest_absolute(struct kvm_vcpu *vcpu,
+                                         unsigned long guestdest,
                                          const void *from, unsigned long n)
 {
-        u64 origin  = vcpu->kvm->arch.guest_origin;
-        u64 memsize = vcpu->kvm->arch.guest_memsize;
+        unsigned long origin  = vcpu->kvm->arch.guest_origin;
+        unsigned long memsize = vcpu->kvm->arch.guest_memsize;
 
         if (guestdest + n > memsize)
                 return -EFAULT;
@@ -256,10 +259,11 @@ static inline int copy_to_guest_absolute(struct kvm_vcpu *vcpu, u64 guestdest,
 }
 
 static inline int copy_from_guest_absolute(struct kvm_vcpu *vcpu, void *to,
-                                           u64 guestsrc, unsigned long n)
+                                           unsigned long guestsrc,
+                                           unsigned long n)
 {
-        u64 origin  = vcpu->kvm->arch.guest_origin;
-        u64 memsize = vcpu->kvm->arch.guest_memsize;
+        unsigned long origin  = vcpu->kvm->arch.guest_origin;
+        unsigned long memsize = vcpu->kvm->arch.guest_memsize;
 
         if (guestsrc + n > memsize)
                 return -EFAULT;
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index 47a0b642174c..61236102203e 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -20,7 +20,7 @@
 #include "kvm-s390.h"
 #include "gaccess.h"
 
-static int handle_lctg(struct kvm_vcpu *vcpu)
+static int handle_lctlg(struct kvm_vcpu *vcpu)
 {
         int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4;
         int reg3 = vcpu->arch.sie_block->ipa & 0x000f;
@@ -30,7 +30,7 @@ static int handle_lctg(struct kvm_vcpu *vcpu)
         u64 useraddr;
         int reg, rc;
 
-        vcpu->stat.instruction_lctg++;
+        vcpu->stat.instruction_lctlg++;
         if ((vcpu->arch.sie_block->ipb & 0xff) != 0x2f)
                 return -ENOTSUPP;
 
@@ -38,9 +38,12 @@ static int handle_lctg(struct kvm_vcpu *vcpu)
         if (base2)
                 useraddr += vcpu->arch.guest_gprs[base2];
 
+        if (useraddr & 7)
+                return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
         reg = reg1;
 
-        VCPU_EVENT(vcpu, 5, "lctg r1:%x, r3:%x,b2:%x,d2:%x", reg1, reg3, base2,
+        VCPU_EVENT(vcpu, 5, "lctlg r1:%x, r3:%x,b2:%x,d2:%x", reg1, reg3, base2,
                    disp2);
 
         do {
@@ -74,6 +77,9 @@ static int handle_lctl(struct kvm_vcpu *vcpu)
         if (base2)
                 useraddr += vcpu->arch.guest_gprs[base2];
 
+        if (useraddr & 3)
+                return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
         VCPU_EVENT(vcpu, 5, "lctl r1:%x, r3:%x,b2:%x,d2:%x", reg1, reg3, base2,
                    disp2);
 
@@ -99,7 +105,7 @@ static intercept_handler_t instruction_handlers[256] = {
         [0xae] = kvm_s390_handle_sigp,
         [0xb2] = kvm_s390_handle_priv,
         [0xb7] = handle_lctl,
-        [0xeb] = handle_lctg,
+        [0xeb] = handle_lctlg,
 };
 
 static int handle_noop(struct kvm_vcpu *vcpu)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 84a7fed4cd4e..2960702b4824 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -13,6 +13,7 @@
 #include <asm/lowcore.h>
 #include <asm/uaccess.h>
 #include <linux/kvm_host.h>
+#include <linux/signal.h>
 #include "kvm-s390.h"
 #include "gaccess.h"
 
@@ -31,7 +32,7 @@ static int psw_interrupts_disabled(struct kvm_vcpu *vcpu)
 }
 
 static int __interrupt_is_deliverable(struct kvm_vcpu *vcpu,
-                                      struct interrupt_info *inti)
+                                      struct kvm_s390_interrupt_info *inti)
 {
         switch (inti->type) {
         case KVM_S390_INT_EMERGENCY:
@@ -91,7 +92,7 @@ static void __set_cpuflag(struct kvm_vcpu *vcpu, u32 flag)
 }
 
 static void __set_intercept_indicator(struct kvm_vcpu *vcpu,
-                                      struct interrupt_info *inti)
+                                      struct kvm_s390_interrupt_info *inti)
 {
         switch (inti->type) {
         case KVM_S390_INT_EMERGENCY:
@@ -111,7 +112,7 @@ static void __set_intercept_indicator(struct kvm_vcpu *vcpu,
 }
 
 static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
-                                   struct interrupt_info *inti)
+                                   struct kvm_s390_interrupt_info *inti)
 {
         const unsigned short table[] = { 2, 4, 4, 6 };
         int rc, exception = 0;
@@ -246,15 +247,10 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
         default:
                 BUG();
         }
-
         if (exception) {
-                VCPU_EVENT(vcpu, 1, "%s", "program exception while delivering"
-                           " interrupt");
-                kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
-                if (inti->type == KVM_S390_PROGRAM_INT) {
-                        printk(KERN_WARNING "kvm: recursive program check\n");
-                        BUG();
-                }
+                printk("kvm: The guest lowcore is not mapped during interrupt "
+                        "delivery, killing userspace\n");
+                do_exit(SIGKILL);
         }
 }
 
@@ -277,22 +273,19 @@ static int __try_deliver_ckc_interrupt(struct kvm_vcpu *vcpu)
                 __LC_EXT_NEW_PSW, sizeof(psw_t));
         if (rc == -EFAULT)
                 exception = 1;
-
         if (exception) {
-                VCPU_EVENT(vcpu, 1, "%s", "program exception while delivering" \
-                           " ckc interrupt");
-                kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
-                return 0;
+                printk("kvm: The guest lowcore is not mapped during interrupt "
+                        "delivery, killing userspace\n");
+                do_exit(SIGKILL);
         }
-
         return 1;
 }
 
 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
 {
-        struct local_interrupt *li = &vcpu->arch.local_int;
-        struct float_interrupt *fi = vcpu->arch.local_int.float_int;
-        struct interrupt_info  *inti;
+        struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
+        struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int;
+        struct kvm_s390_interrupt_info  *inti;
         int rc = 0;
 
         if (atomic_read(&li->active)) {
@@ -408,9 +401,9 @@ void kvm_s390_idle_wakeup(unsigned long data)
 
 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
 {
-        struct local_interrupt *li = &vcpu->arch.local_int;
-        struct float_interrupt *fi = vcpu->arch.local_int.float_int;
-        struct interrupt_info  *n, *inti = NULL;
+        struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
+        struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int;
+        struct kvm_s390_interrupt_info  *n, *inti = NULL;
         int deliver;
 
         __reset_intercept_indicators(vcpu);
@@ -465,8 +458,8 @@ void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
 
 int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
 {
-        struct local_interrupt *li = &vcpu->arch.local_int;
-        struct interrupt_info *inti;
+        struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
+        struct kvm_s390_interrupt_info *inti;
 
         inti = kzalloc(sizeof(*inti), GFP_KERNEL);
         if (!inti)
@@ -487,9 +480,9 @@ int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
 int kvm_s390_inject_vm(struct kvm *kvm,
                        struct kvm_s390_interrupt *s390int)
 {
-        struct local_interrupt *li;
-        struct float_interrupt *fi;
-        struct interrupt_info *inti;
+        struct kvm_s390_local_interrupt *li;
+        struct kvm_s390_float_interrupt *fi;
+        struct kvm_s390_interrupt_info *inti;
         int sigcpu;
 
         inti = kzalloc(sizeof(*inti), GFP_KERNEL);
@@ -544,8 +537,8 @@ int kvm_s390_inject_vm(struct kvm *kvm,
 int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
                          struct kvm_s390_interrupt *s390int)
 {
-        struct local_interrupt *li;
-        struct interrupt_info *inti;
+        struct kvm_s390_local_interrupt *li;
+        struct kvm_s390_interrupt_info *inti;
 
         inti = kzalloc(sizeof(*inti), GFP_KERNEL);
         if (!inti)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 6558b09ff579..8b00eb2ddf57 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -39,7 +39,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
         { "exit_instruction", VCPU_STAT(exit_instruction) },
         { "exit_program_interruption", VCPU_STAT(exit_program_interruption) },
         { "exit_instr_and_program_int", VCPU_STAT(exit_instr_and_program) },
-        { "instruction_lctg", VCPU_STAT(instruction_lctg) },
+        { "instruction_lctlg", VCPU_STAT(instruction_lctlg) },
         { "instruction_lctl", VCPU_STAT(instruction_lctl) },
         { "deliver_emergency_signal", VCPU_STAT(deliver_emergency_signal) },
         { "deliver_service_signal", VCPU_STAT(deliver_service_signal) },
@@ -79,10 +79,6 @@ void kvm_arch_hardware_disable(void *garbage)
 {
 }
 
-void decache_vcpus_on_cpu(int cpu)
-{
-}
-
 int kvm_arch_hardware_setup(void)
 {
         return 0;
@@ -116,7 +112,12 @@ long kvm_arch_dev_ioctl(struct file *filp,
 
 int kvm_dev_ioctl_check_extension(long ext)
 {
-        return 0;
+        switch (ext) {
+        case KVM_CAP_USER_MEMORY:
+                return 1;
+        default:
+                return 0;
+        }
 }
 
 /* Section: vm related */
@@ -198,6 +199,7 @@ out_nokvm:
 void kvm_arch_destroy_vm(struct kvm *kvm)
 {
         debug_unregister(kvm->arch.dbf);
+        kvm_free_physmem(kvm);
         free_page((unsigned long)(kvm->arch.sca));
         kfree(kvm);
         module_put(THIS_MODULE);
@@ -250,11 +252,16 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu)
         vcpu->arch.sie_block->gbea = 1;
 }
 
+/* The current code can have up to 256 pages for virtio */
+#define VIRTIODESCSPACE (256ul * 4096ul)
+
 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 {
         atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH);
-        vcpu->arch.sie_block->gmslm = 0xffffffffffUL;
-        vcpu->arch.sie_block->gmsor = 0x000000000000;
+        vcpu->arch.sie_block->gmslm = vcpu->kvm->arch.guest_memsize +
+                                      vcpu->kvm->arch.guest_origin +
+                                      VIRTIODESCSPACE - 1ul;
+        vcpu->arch.sie_block->gmsor = vcpu->kvm->arch.guest_origin;
         vcpu->arch.sie_block->ecb   = 2;
         vcpu->arch.sie_block->eca   = 0xC1002001U;
         setup_timer(&vcpu->arch.ckc_timer, kvm_s390_idle_wakeup,
@@ -273,7 +280,8 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
         if (!vcpu)
                 goto out_nomem;
 
-        vcpu->arch.sie_block = (struct sie_block *) get_zeroed_page(GFP_KERNEL);
+        vcpu->arch.sie_block = (struct kvm_s390_sie_block *)
+                                        get_zeroed_page(GFP_KERNEL);
 
         if (!vcpu->arch.sie_block)
                 goto out_free_cpu;
@@ -672,6 +680,10 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
         return 0;
 }
 
+void kvm_arch_flush_shadow(struct kvm *kvm)
+{
+}
+
 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
 {
         return gfn;
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index c02286c6a931..2e2d2ffb6a07 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -199,7 +199,7 @@ out:
 
 static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
 {
-        struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
+        struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
         int cpus = 0;
         int n;
 
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 0a236acfb5f6..170392687ce0 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -43,9 +43,10 @@
 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
 
 
-static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr, u64 *reg)
+static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
+                        unsigned long *reg)
 {
-        struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
+        struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
         int rc;
 
         if (cpu_addr >= KVM_MAX_VCPUS)
@@ -71,9 +72,9 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr, u64 *reg)
 
 static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
 {
-        struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
-        struct local_interrupt *li;
-        struct interrupt_info *inti;
+        struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
+        struct kvm_s390_local_interrupt *li;
+        struct kvm_s390_interrupt_info *inti;
         int rc;
 
         if (cpu_addr >= KVM_MAX_VCPUS)
@@ -108,9 +109,9 @@ unlock:
 
 static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int store)
 {
-        struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
-        struct local_interrupt *li;
-        struct interrupt_info *inti;
+        struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
+        struct kvm_s390_local_interrupt *li;
+        struct kvm_s390_interrupt_info *inti;
         int rc;
 
         if (cpu_addr >= KVM_MAX_VCPUS)
@@ -167,11 +168,11 @@ static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter)
 }
 
 static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
-                             u64 *reg)
+                             unsigned long *reg)
 {
-        struct float_interrupt *fi = &vcpu->kvm->arch.float_int;
-        struct local_interrupt *li;
-        struct interrupt_info *inti;
+        struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
+        struct kvm_s390_local_interrupt *li;
+        struct kvm_s390_interrupt_info *inti;
         int rc;
         u8 tmp;
 
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index f4b6124fdb75..f28c43d2f61d 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -72,7 +72,8 @@ void arch_release_hugepage(struct page *page)
         page[1].index = 0;
 }
 
-pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+                        unsigned long addr, unsigned long sz)
 {
         pgd_t *pgdp;
         pud_t *pudp;
@@ -119,6 +120,11 @@ int pmd_huge(pmd_t pmd)
         return !!(pmd_val(pmd) & _SEGMENT_ENTRY_LARGE);
 }
 
+int pud_huge(pud_t pud)
+{
+        return 0;
+}
+
 struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
                              pmd_t *pmdp, int write)
 {
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 388cc7420055..4993b0f594eb 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -42,38 +42,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((__aligned__(PAGE_SIZE)));
 char  empty_zero_page[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE)));
 
-void show_mem(void)
-{
-        unsigned long i, total = 0, reserved = 0;
-        unsigned long shared = 0, cached = 0;
-        unsigned long flags;
-        struct page *page;
-        pg_data_t *pgdat;
-
-        printk("Mem-info:\n");
-        show_free_areas();
-        for_each_online_pgdat(pgdat) {
-                pgdat_resize_lock(pgdat, &flags);
-                for (i = 0; i < pgdat->node_spanned_pages; i++) {
-                        if (!pfn_valid(pgdat->node_start_pfn + i))
-                                continue;
-                        page = pfn_to_page(pgdat->node_start_pfn + i);
-                        total++;
-                        if (PageReserved(page))
-                                reserved++;
-                        else if (PageSwapCache(page))
-                                cached++;
-                        else if (page_count(page))
-                                shared += page_count(page) - 1;
-                }
-                pgdat_resize_unlock(pgdat, &flags);
-        }
-        printk("%ld pages of RAM\n", total);
-        printk("%ld reserved pages\n", reserved);
-        printk("%ld pages shared\n", shared);
-        printk("%ld pages swap cached\n", cached);
-}
-
 /*
  * paging_init() sets up the page tables
  */