Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next

This merges in the ppc-kvm topic branch of the powerpc tree to get
two patches which are prerequisites for the following patch series,
plus another patch which touches both powerpc and KVM code.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

27 files changed, 130 insertions, 187 deletions

diff --git a/arch/s390/include/asm/alternative.h b/arch/s390/include/asm/alternative.h
index 6c268f6a51d3..a72002056b54 100644
--- a/arch/s390/include/asm/alternative.h
+++ b/arch/s390/include/asm/alternative.h
@@ -15,14 +15,9 @@ struct alt_instr {
 	u8  replacementlen;	/* length of new instruction */
 } __packed;
 
-#ifdef CONFIG_ALTERNATIVES
-extern void apply_alternative_instructions(void);
-extern void apply_alternatives(struct alt_instr *start, struct alt_instr *end);
-#else
-static inline void apply_alternative_instructions(void) {};
-static inline void apply_alternatives(struct alt_instr *start,
-				      struct alt_instr *end) {};
-#endif
+void apply_alternative_instructions(void);
+void apply_alternatives(struct alt_instr *start, struct alt_instr *end);
+
 /*
  * |661:       |662:	  |6620      |663:
  * +-----------+---------------------+
@@ -109,7 +104,6 @@ static inline void apply_alternatives(struct alt_instr *start,
 	b_altinstr(num)":\n\t" altinstr "\n" e_altinstr(num) ":\n"	\
 	INSTR_LEN_SANITY_CHECK(altinstr_len(num))
 
-#ifdef CONFIG_ALTERNATIVES
 /* alternative assembly primitive: */
 #define ALTERNATIVE(oldinstr, altinstr, facility) \
 	".pushsection .altinstr_replacement, \"ax\"\n"			\
@@ -130,14 +124,6 @@ static inline void apply_alternatives(struct alt_instr *start,
 	ALTINSTR_ENTRY(facility1, 1)					\
 	ALTINSTR_ENTRY(facility2, 2)					\
 	".popsection\n"
-#else
-/* Alternative instructions are disabled, let's put just oldinstr in */
-#define ALTERNATIVE(oldinstr, altinstr, facility) \
-	oldinstr "\n"
-
-#define ALTERNATIVE_2(oldinstr, altinstr1, facility1, altinstr2, facility2) \
-	oldinstr "\n"
-#endif
 
 /*
  * Alternative instructions for different CPU types or capabilities.
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index 1b60eb3676d5..5e6a63641a5f 100644
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -263,7 +263,6 @@ typedef struct compat_siginfo {
 #define si_overrun	_sifields._timer._overrun
 
 #define COMPAT_OFF_T_MAX	0x7fffffff
-#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL
 
 /*
  * A pointer passed in from user mode. This should not
diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h
index 05480e4cc5ca..dd08db491b89 100644
--- a/arch/s390/include/asm/cpu_mf.h
+++ b/arch/s390/include/asm/cpu_mf.h
@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * CPU-measurement facilities
  *
  *  Copyright IBM Corp. 2012
  *  Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
  *	       Jan Glauber <jang@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
  */
 #ifndef _ASM_S390_CPU_MF_H
 #define _ASM_S390_CPU_MF_H
@@ -144,6 +141,12 @@ struct hws_trailer_entry {
 	unsigned long long progusage2;	 /*				      */
 } __packed;
 
+/* Load program parameter */
+static inline void lpp(void *pp)
+{
+	asm volatile(".insn s,0xb2800000,0(%0)\n":: "a" (pp) : "memory");
+}
+
 /* Query counter information */
 static inline int qctri(struct cpumf_ctr_info *info)
 {
@@ -167,7 +170,7 @@ static inline int lcctl(u64 ctl)
 		"	.insn	s,0xb2840000,%1\n"
 		"	ipm	%0\n"
 		"	srl	%0,28\n"
-		: "=d" (cc) : "m" (ctl) : "cc");
+		: "=d" (cc) : "Q" (ctl) : "cc");
 	return cc;
 }
 
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 9a3cb3983c01..1a61b1b997f2 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -194,13 +194,14 @@ struct arch_elf_state {
 #define CORE_DUMP_USE_REGSET
 #define ELF_EXEC_PAGESIZE	PAGE_SIZE
 
-/*
- * This is the base location for PIE (ET_DYN with INTERP) loads. On
- * 64-bit, this is raised to 4GB to leave the entire 32-bit address
- * space open for things that want to use the area for 32-bit pointers.
- */
-#define ELF_ET_DYN_BASE		(is_compat_task() ? 0x000400000UL : \
-						    0x100000000UL)
+/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+   use of this is to invoke "./ld.so someprog" to test out a new version of
+   the loader.  We need to make sure that it is out of the way of the program
+   that it will "exec", and that there is sufficient room for the brk. 64-bit
+   tasks are aligned to 4GB. */
+#define ELF_ET_DYN_BASE (is_compat_task() ? \
+				(STACK_TOP / 3 * 2) : \
+				(STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))
 
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports. */
diff --git a/arch/s390/include/asm/futex.h b/arch/s390/include/asm/futex.h
index 9b5a3469fed9..5e97a4353147 100644
--- a/arch/s390/include/asm/futex.h
+++ b/arch/s390/include/asm/futex.h
@@ -26,9 +26,9 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
 		u32 __user *uaddr)
 {
 	int oldval = 0, newval, ret;
+	mm_segment_t old_fs;
 
-	load_kernel_asce();
-
+	old_fs = enable_sacf_uaccess();
 	pagefault_disable();
 	switch (op) {
 	case FUTEX_OP_SET:
@@ -55,6 +55,7 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
 		ret = -ENOSYS;
 	}
 	pagefault_enable();
+	disable_sacf_uaccess(old_fs);
 
 	if (!ret)
 		*oval = oldval;
@@ -65,9 +66,10 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
 static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 						u32 oldval, u32 newval)
 {
+	mm_segment_t old_fs;
 	int ret;
 
-	load_kernel_asce();
+	old_fs = enable_sacf_uaccess();
 	asm volatile(
 		"   sacf 256\n"
 		"0: cs   %1,%4,0(%5)\n"
@@ -77,6 +79,7 @@ static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 		: "=d" (ret), "+d" (oldval), "=m" (*uaddr)
 		: "0" (-EFAULT), "d" (newval), "a" (uaddr), "m" (*uaddr)
 		: "cc", "memory");
+	disable_sacf_uaccess(old_fs);
 	*uval = oldval;
 	return ret;
 }
diff --git a/arch/s390/include/asm/kprobes.h b/arch/s390/include/asm/kprobes.h
index 921391f2341e..13de80cf741c 100644
--- a/arch/s390/include/asm/kprobes.h
+++ b/arch/s390/include/asm/kprobes.h
@@ -1,22 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 #ifndef _ASM_S390_KPROBES_H
 #define _ASM_S390_KPROBES_H
 /*
  *  Kernel Probes (KProbes)
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
  * Copyright IBM Corp. 2002, 2006
  *
  * 2002-Oct	Created by Vamsi Krishna S <vamsi_krishna@in.ibm.com> Kernel
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index f3a9b5a445b6..e14f381757f6 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * definition for kernel virtual machines on s390
  *
  * Copyright IBM Corp. 2008, 2009
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
- *
  *    Author(s): Carsten Otte <cotte@de.ibm.com>
  */
 
diff --git a/arch/s390/include/asm/kvm_para.h b/arch/s390/include/asm/kvm_para.h
index 41393052ac57..74eeec9c0a80 100644
--- a/arch/s390/include/asm/kvm_para.h
+++ b/arch/s390/include/asm/kvm_para.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * definition for paravirtual devices on s390
  *
  * Copyright IBM Corp. 2008
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
- *
  *    Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
  */
 /*
@@ -20,8 +17,6 @@
  *
  * Copyright IBM Corp. 2007,2008
  * Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.
  */
 #ifndef __S390_KVM_PARA_H
 #define __S390_KVM_PARA_H
diff --git a/arch/s390/include/asm/livepatch.h b/arch/s390/include/asm/livepatch.h
index 6de5c6cb0061..672f95b12d40 100644
--- a/arch/s390/include/asm/livepatch.h
+++ b/arch/s390/include/asm/livepatch.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * livepatch.h - s390-specific Kernel Live Patching Core
  *
@@ -7,13 +8,6 @@
  *	      Jiri Slaby
  */
 
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- */
-
 #ifndef ASM_LIVEPATCH_H
 #define ASM_LIVEPATCH_H
 
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 9eb36a1592c7..ec6592e8ba36 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -115,33 +115,28 @@ struct lowcore {
 	/* Address space pointer. */
 	__u64	kernel_asce;			/* 0x0378 */
 	__u64	user_asce;			/* 0x0380 */
+	__u64	vdso_asce;			/* 0x0388 */
 
 	/*
 	 * The lpp and current_pid fields form a
 	 * 64-bit value that is set as program
 	 * parameter with the LPP instruction.
 	 */
-	__u32	lpp;				/* 0x0388 */
-	__u32	current_pid;			/* 0x038c */
+	__u32	lpp;				/* 0x0390 */
+	__u32	current_pid;			/* 0x0394 */
 
 	/* SMP info area */
-	__u32	cpu_nr;				/* 0x0390 */
-	__u32	softirq_pending;		/* 0x0394 */
-	__u64	percpu_offset;			/* 0x0398 */
-	__u64	vdso_per_cpu_data;		/* 0x03a0 */
-	__u64	machine_flags;			/* 0x03a8 */
-	__u32	preempt_count;			/* 0x03b0 */
-	__u8	pad_0x03b4[0x03b8-0x03b4];	/* 0x03b4 */
-	__u64	gmap;				/* 0x03b8 */
-	__u32	spinlock_lockval;		/* 0x03c0 */
-	__u32	spinlock_index;			/* 0x03c4 */
-	__u32	fpu_flags;			/* 0x03c8 */
-	__u8	pad_0x03cc[0x0400-0x03cc];	/* 0x03cc */
-
-	/* Per cpu primary space access list */
-	__u32	paste[16];			/* 0x0400 */
-
-	__u8	pad_0x04c0[0x0e00-0x0440];	/* 0x0440 */
+	__u32	cpu_nr;				/* 0x0398 */
+	__u32	softirq_pending;		/* 0x039c */
+	__u32	preempt_count;			/* 0x03a0 */
+	__u32	spinlock_lockval;		/* 0x03a4 */
+	__u32	spinlock_index;			/* 0x03a8 */
+	__u32	fpu_flags;			/* 0x03ac */
+	__u64	percpu_offset;			/* 0x03b0 */
+	__u64	vdso_per_cpu_data;		/* 0x03b8 */
+	__u64	machine_flags;			/* 0x03c0 */
+	__u64	gmap;				/* 0x03c8 */
+	__u8	pad_0x03d0[0x0e00-0x03d0];	/* 0x03d0 */
 
 	/*
 	 * 0xe00 contains the address of the IPL Parameter Information
@@ -193,14 +188,14 @@ extern struct lowcore *lowcore_ptr[];
 
 static inline void set_prefix(__u32 address)
 {
-	asm volatile("spx %0" : : "m" (address) : "memory");
+	asm volatile("spx %0" : : "Q" (address) : "memory");
 }
 
 static inline __u32 store_prefix(void)
 {
 	__u32 address;
 
-	asm volatile("stpx %0" : "=m" (address));
+	asm volatile("stpx %0" : "=Q" (address));
 	return address;
 }
 
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index cf4c1cb17dcd..65154eaa3714 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -28,7 +28,7 @@ static inline int init_new_context(struct task_struct *tsk,
 #ifdef CONFIG_PGSTE
 	mm->context.alloc_pgste = page_table_allocate_pgste ||
 		test_thread_flag(TIF_PGSTE) ||
-		current->mm->context.alloc_pgste;
+		(current->mm && current->mm->context.alloc_pgste);
 	mm->context.has_pgste = 0;
 	mm->context.use_skey = 0;
 	mm->context.use_cmma = 0;
@@ -73,41 +73,38 @@ static inline int init_new_context(struct task_struct *tsk,
 static inline void set_user_asce(struct mm_struct *mm)
 {
 	S390_lowcore.user_asce = mm->context.asce;
-	if (current->thread.mm_segment.ar4)
-		__ctl_load(S390_lowcore.user_asce, 7, 7);
-	set_cpu_flag(CIF_ASCE_PRIMARY);
+	__ctl_load(S390_lowcore.user_asce, 1, 1);
+	clear_cpu_flag(CIF_ASCE_PRIMARY);
 }
 
 static inline void clear_user_asce(void)
 {
 	S390_lowcore.user_asce = S390_lowcore.kernel_asce;
-
-	__ctl_load(S390_lowcore.user_asce, 1, 1);
-	__ctl_load(S390_lowcore.user_asce, 7, 7);
-}
-
-static inline void load_kernel_asce(void)
-{
-	unsigned long asce;
-
-	__ctl_store(asce, 1, 1);
-	if (asce != S390_lowcore.kernel_asce)
-		__ctl_load(S390_lowcore.kernel_asce, 1, 1);
+	__ctl_load(S390_lowcore.kernel_asce, 1, 1);
 	set_cpu_flag(CIF_ASCE_PRIMARY);
 }
 
+mm_segment_t enable_sacf_uaccess(void);
+void disable_sacf_uaccess(mm_segment_t old_fs);
+
 static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 			     struct task_struct *tsk)
 {
 	int cpu = smp_processor_id();
 
-	S390_lowcore.user_asce = next->context.asce;
 	if (prev == next)
 		return;
+	S390_lowcore.user_asce = next->context.asce;
 	cpumask_set_cpu(cpu, &next->context.cpu_attach_mask);
-	/* Clear old ASCE by loading the kernel ASCE. */
-	__ctl_load(S390_lowcore.kernel_asce, 1, 1);
-	__ctl_load(S390_lowcore.kernel_asce, 7, 7);
+	/* Clear previous user-ASCE from CR1 and CR7 */
+	if (!test_cpu_flag(CIF_ASCE_PRIMARY)) {
+		__ctl_load(S390_lowcore.kernel_asce, 1, 1);
+		set_cpu_flag(CIF_ASCE_PRIMARY);
+	}
+	if (test_cpu_flag(CIF_ASCE_SECONDARY)) {
+		__ctl_load(S390_lowcore.vdso_asce, 7, 7);
+		clear_cpu_flag(CIF_ASCE_SECONDARY);
+	}
 	cpumask_clear_cpu(cpu, &prev->context.cpu_attach_mask);
 }
 
@@ -117,7 +114,6 @@ static inline void finish_arch_post_lock_switch(void)
 	struct task_struct *tsk = current;
 	struct mm_struct *mm = tsk->mm;
 
-	load_kernel_asce();
 	if (mm) {
 		preempt_disable();
 		while (atomic_read(&mm->context.flush_count))
diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h
index 79aa6421fedb..d6c9d1e0dc2d 100644
--- a/arch/s390/include/asm/perf_event.h
+++ b/arch/s390/include/asm/perf_event.h
@@ -64,27 +64,10 @@ struct perf_sf_sde_regs {
 #define REG_OVERFLOW		1
 #define OVERFLOW_REG(hwc)	((hwc)->extra_reg.config)
 #define SFB_ALLOC_REG(hwc)	((hwc)->extra_reg.alloc)
-#define RAWSAMPLE_REG(hwc)	((hwc)->config)
 #define TEAR_REG(hwc)		((hwc)->last_tag)
 #define SAMPL_RATE(hwc)		((hwc)->event_base)
 #define SAMPL_FLAGS(hwc)	((hwc)->config_base)
 #define SAMPL_DIAG_MODE(hwc)	(SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE)
 #define SDB_FULL_BLOCKS(hwc)	(SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS)
 
-/* Structure for sampling data entries to be passed as perf raw sample data
- * to user space.  Note that raw sample data must be aligned and, thus, might
- * be padded with zeros.
- */
-struct sf_raw_sample {
-#define SF_RAW_SAMPLE_BASIC	PERF_CPUM_SF_BASIC_MODE
-#define SF_RAW_SAMPLE_DIAG	PERF_CPUM_SF_DIAG_MODE
-	u64			format;
-	u32			 size;	  /* Size of sf_raw_sample */
-	u16			bsdes;	  /* Basic-sampling data entry size */
-	u16			dsdes;	  /* Diagnostic-sampling data entry size */
-	struct hws_basic_entry	basic;	  /* Basic-sampling data entry */
-	struct hws_diag_entry	 diag;	  /* Diagnostic-sampling data entry */
-	u8		    padding[];	  /* Padding to next multiple of 8 */
-} __packed;
-
 #endif /* _ASM_S390_PERF_EVENT_H */
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index d7fe9838084d..57d7bc92e0b8 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -709,7 +709,7 @@ static inline unsigned long pmd_pfn(pmd_t pmd)
 	return (pmd_val(pmd) & origin_mask) >> PAGE_SHIFT;
 }
 
-#define __HAVE_ARCH_PMD_WRITE
+#define pmd_write pmd_write
 static inline int pmd_write(pmd_t pmd)
 {
 	return (pmd_val(pmd) & _SEGMENT_ENTRY_WRITE) != 0;
@@ -1264,6 +1264,12 @@ static inline pud_t pud_mkwrite(pud_t pud)
 	return pud;
 }
 
+#define pud_write pud_write
+static inline int pud_write(pud_t pud)
+{
+	return (pud_val(pud) & _REGION3_ENTRY_WRITE) != 0;
+}
+
 static inline pud_t pud_mkclean(pud_t pud)
 {
 	if (pud_large(pud)) {
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index f25bfe888933..bfbfad482289 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -109,9 +109,7 @@ extern void execve_tail(void);
 
 #define HAVE_ARCH_PICK_MMAP_LAYOUT
 
-typedef struct {
-        __u32 ar4;
-} mm_segment_t;
+typedef unsigned int mm_segment_t;
 
 /*
  * Thread structure
@@ -247,7 +245,7 @@ static inline unsigned short stap(void)
 {
 	unsigned short cpu_address;
 
-	asm volatile("stap %0" : "=m" (cpu_address));
+	asm volatile("stap %0" : "=Q" (cpu_address));
 	return cpu_address;
 }
 
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 2f84e77f1f1b..a3788dafc0e1 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -13,10 +13,12 @@
 #define PIF_SYSCALL		0	/* inside a system call */
 #define PIF_PER_TRAP		1	/* deliver sigtrap on return to user */
 #define PIF_SYSCALL_RESTART	2	/* restart the current system call */
+#define PIF_GUEST_FAULT		3	/* indicates program check in sie64a */
 
 #define _PIF_SYSCALL		_BITUL(PIF_SYSCALL)
 #define _PIF_PER_TRAP		_BITUL(PIF_PER_TRAP)
 #define _PIF_SYSCALL_RESTART	_BITUL(PIF_SYSCALL_RESTART)
+#define _PIF_GUEST_FAULT	_BITUL(PIF_GUEST_FAULT)
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 8bc87dcb10eb..2eb0c8a7b664 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -36,7 +36,7 @@
 #define MACHINE_FLAG_SCC	_BITUL(17)
 
 #define LPP_MAGIC		_BITUL(31)
-#define LPP_PFAULT_PID_MASK	_AC(0xffffffff, UL)
+#define LPP_PID_MASK		_AC(0xffffffff, UL)
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 6bc941be6921..96f9a9151fde 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Access to user system call parameters and results
  *
  *  Copyright IBM Corp. 2008
  *  Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
  */
 
 #ifndef _ASM_SYSCALL_H
diff --git a/arch/s390/include/asm/sysinfo.h b/arch/s390/include/asm/sysinfo.h
index a702cb9d4269..25057c118d56 100644
--- a/arch/s390/include/asm/sysinfo.h
+++ b/arch/s390/include/asm/sysinfo.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * definition for store system information stsi
  *
  * Copyright IBM Corp. 2001, 2008
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
- *
  *    Author(s): Ulrich Weigand <weigand@de.ibm.com>
  *		 Christian Borntraeger <borntraeger@de.ibm.com>
  */
diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
index 1807229b292f..cca406fdbe51 100644
--- a/arch/s390/include/asm/topology.h
+++ b/arch/s390/include/asm/topology.h
@@ -53,6 +53,7 @@ const struct cpumask *cpu_coregroup_mask(int cpu);
 static inline void topology_init_early(void) { }
 static inline void topology_schedule_update(void) { }
 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
+static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
 static inline void topology_expect_change(void) { }
 
 #endif /* CONFIG_SCHED_TOPOLOGY */
diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
index cdd0f0d999e2..ad6b91013a05 100644
--- a/arch/s390/include/asm/uaccess.h
+++ b/arch/s390/include/asm/uaccess.h
@@ -16,7 +16,7 @@
 #include <asm/processor.h>
 #include <asm/ctl_reg.h>
 #include <asm/extable.h>
-
+#include <asm/facility.h>
 
 /*
  * The fs value determines whether argument validity checking should be
@@ -26,27 +26,16 @@
  * For historical reasons, these macros are grossly misnamed.
  */
 
-#define MAKE_MM_SEG(a)  ((mm_segment_t) { (a) })
-
-
-#define KERNEL_DS       MAKE_MM_SEG(0)
-#define USER_DS         MAKE_MM_SEG(1)
+#define KERNEL_DS	(0)
+#define KERNEL_DS_SACF	(1)
+#define USER_DS		(2)
+#define USER_DS_SACF	(3)
 
 #define get_ds()        (KERNEL_DS)
 #define get_fs()        (current->thread.mm_segment)
-#define segment_eq(a,b) ((a).ar4 == (b).ar4)
+#define segment_eq(a,b) (((a) & 2) == ((b) & 2))
 
-static inline void set_fs(mm_segment_t fs)
-{
-	current->thread.mm_segment = fs;
-	if (uaccess_kernel()) {
-		set_cpu_flag(CIF_ASCE_SECONDARY);
-		__ctl_load(S390_lowcore.kernel_asce, 7, 7);
-	} else {
-		clear_cpu_flag(CIF_ASCE_SECONDARY);
-		__ctl_load(S390_lowcore.user_asce, 7, 7);
-	}
-}
+void set_fs(mm_segment_t fs);
 
 static inline int __range_ok(unsigned long addr, unsigned long size)
 {
@@ -95,7 +84,7 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n);
 
 static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size)
 {
-	unsigned long spec = 0x810000UL;
+	unsigned long spec = 0x010000UL;
 	int rc;
 
 	switch (size) {
@@ -125,7 +114,7 @@ static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size)
 
 static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size)
 {
-	unsigned long spec = 0x81UL;
+	unsigned long spec = 0x01UL;
 	int rc;
 
 	switch (size) {
diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h
index ae6261ef97d5..169d7604eb80 100644
--- a/arch/s390/include/asm/vdso.h
+++ b/arch/s390/include/asm/vdso.h
@@ -46,6 +46,7 @@ struct vdso_per_cpu_data {
 };
 
 extern struct vdso_data *vdso_data;
+extern struct vdso_data boot_vdso_data;
 
 void vdso_alloc_boot_cpu(struct lowcore *lowcore);
 int vdso_alloc_per_cpu(struct lowcore *lowcore);
diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h
index 9ad172dcd912..38535a57fef8 100644
--- a/arch/s390/include/uapi/asm/kvm.h
+++ b/arch/s390/include/uapi/asm/kvm.h
@@ -6,10 +6,6 @@
  *
  * Copyright IBM Corp. 2008
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
- *
  *    Author(s): Carsten Otte <cotte@de.ibm.com>
  *               Christian Borntraeger <borntraeger@de.ibm.com>
  */
diff --git a/arch/s390/include/uapi/asm/kvm_para.h b/arch/s390/include/uapi/asm/kvm_para.h
index 0dc86b3a7cb0..b9ab584adf43 100644
--- a/arch/s390/include/uapi/asm/kvm_para.h
+++ b/arch/s390/include/uapi/asm/kvm_para.h
@@ -4,9 +4,5 @@
  *
  * Copyright IBM Corp. 2008
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
- *
  *    Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
  */
diff --git a/arch/s390/include/uapi/asm/kvm_perf.h b/arch/s390/include/uapi/asm/kvm_perf.h
index c36c97ffdc6f..84606b8cc49e 100644
--- a/arch/s390/include/uapi/asm/kvm_perf.h
+++ b/arch/s390/include/uapi/asm/kvm_perf.h
@@ -4,10 +4,6 @@
  *
  * Copyright 2014 IBM Corp.
  * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
  */
 
 #ifndef __LINUX_KVM_PERF_S390_H
diff --git a/arch/s390/include/uapi/asm/perf_regs.h b/arch/s390/include/uapi/asm/perf_regs.h
new file mode 100644
index 000000000000..7c8564f98205
--- /dev/null
+++ b/arch/s390/include/uapi/asm/perf_regs.h
@@ -0,0 +1,43 @@
+#ifndef _ASM_S390_PERF_REGS_H
+#define _ASM_S390_PERF_REGS_H
+
+enum perf_event_s390_regs {
+	PERF_REG_S390_R0,
+	PERF_REG_S390_R1,
+	PERF_REG_S390_R2,
+	PERF_REG_S390_R3,
+	PERF_REG_S390_R4,
+	PERF_REG_S390_R5,
+	PERF_REG_S390_R6,
+	PERF_REG_S390_R7,
+	PERF_REG_S390_R8,
+	PERF_REG_S390_R9,
+	PERF_REG_S390_R10,
+	PERF_REG_S390_R11,
+	PERF_REG_S390_R12,
+	PERF_REG_S390_R13,
+	PERF_REG_S390_R14,
+	PERF_REG_S390_R15,
+	PERF_REG_S390_FP0,
+	PERF_REG_S390_FP1,
+	PERF_REG_S390_FP2,
+	PERF_REG_S390_FP3,
+	PERF_REG_S390_FP4,
+	PERF_REG_S390_FP5,
+	PERF_REG_S390_FP6,
+	PERF_REG_S390_FP7,
+	PERF_REG_S390_FP8,
+	PERF_REG_S390_FP9,
+	PERF_REG_S390_FP10,
+	PERF_REG_S390_FP11,
+	PERF_REG_S390_FP12,
+	PERF_REG_S390_FP13,
+	PERF_REG_S390_FP14,
+	PERF_REG_S390_FP15,
+	PERF_REG_S390_MASK,
+	PERF_REG_S390_PC,
+
+	PERF_REG_S390_MAX
+};
+
+#endif /* _ASM_S390_PERF_REGS_H */
diff --git a/arch/s390/include/uapi/asm/virtio-ccw.h b/arch/s390/include/uapi/asm/virtio-ccw.h
index 967aad390105..3a77833c74dc 100644
--- a/arch/s390/include/uapi/asm/virtio-ccw.h
+++ b/arch/s390/include/uapi/asm/virtio-ccw.h
@@ -4,10 +4,6 @@
  *
  * Copyright IBM Corp. 2013
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2 only)
- * as published by the Free Software Foundation.
- *
  *  Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
  */
 #ifndef __KVM_VIRTIO_CCW_H
diff --git a/arch/s390/include/uapi/asm/zcrypt.h b/arch/s390/include/uapi/asm/zcrypt.h
index 137ef473584e..d568307321fc 100644
--- a/arch/s390/include/uapi/asm/zcrypt.h
+++ b/arch/s390/include/uapi/asm/zcrypt.h
@@ -9,20 +9,6 @@
  *	       Eric Rossman (edrossma@us.ibm.com)
  *
  *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #ifndef __ASM_S390_ZCRYPT_H