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-rw-r--r--arch/s390/Kbuild1
-rw-r--r--arch/s390/Kconfig2
-rw-r--r--arch/s390/Makefile2
-rw-r--r--arch/s390/include/asm/atomic.h12
-rw-r--r--arch/s390/include/asm/debug.h17
-rw-r--r--arch/s390/include/asm/topology.h6
-rw-r--r--arch/s390/include/asm/uaccess.h2
-rw-r--r--arch/s390/kernel/Makefile1
-rw-r--r--arch/s390/kernel/debug.c32
-rw-r--r--arch/s390/kernel/numa.c (renamed from arch/s390/numa/numa.c)0
-rw-r--r--arch/s390/kernel/process.c18
-rw-r--r--arch/s390/kernel/syscalls/syscall.tbl2
-rw-r--r--arch/s390/kvm/interrupt.c2
-rw-r--r--arch/s390/kvm/kvm-s390.c2
-rw-r--r--arch/s390/kvm/priv.c8
-rw-r--r--arch/s390/lib/test_unwind.c1
-rw-r--r--arch/s390/mm/fault.c16
-rw-r--r--arch/s390/mm/gmap.c31
-rw-r--r--arch/s390/numa/Makefile2
19 files changed, 69 insertions, 88 deletions
diff --git a/arch/s390/Kbuild b/arch/s390/Kbuild
index e63940bb57cd..8b98c501142d 100644
--- a/arch/s390/Kbuild
+++ b/arch/s390/Kbuild
@@ -7,5 +7,4 @@ obj-$(CONFIG_S390_HYPFS_FS) += hypfs/
obj-$(CONFIG_APPLDATA_BASE) += appldata/
obj-y += net/
obj-$(CONFIG_PCI) += pci/
-obj-$(CONFIG_NUMA) += numa/
obj-$(CONFIG_ARCH_HAS_KEXEC_PURGATORY) += purgatory/
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 8c0b52940165..3d86e12e8e3c 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -126,7 +126,6 @@ config S390
select HAVE_ARCH_JUMP_LABEL_RELATIVE
select HAVE_ARCH_KASAN
select HAVE_ARCH_KASAN_VMALLOC
- select CLOCKSOURCE_VALIDATE_LAST_CYCLE
select CPU_NO_EFFICIENT_FFS if !HAVE_MARCH_Z9_109_FEATURES
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_SOFT_DIRTY
@@ -766,6 +765,7 @@ config VFIO_AP
def_tristate n
prompt "VFIO support for AP devices"
depends on S390_AP_IOMMU && VFIO_MDEV_DEVICE && KVM
+ depends on ZCRYPT
help
This driver grants access to Adjunct Processor (AP) devices
via the VFIO mediated device interface.
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 8dfa2cf1f05c..ba94b03c8b2f 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -27,7 +27,7 @@ KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2
KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY
KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float
KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables
-KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-option,-ffreestanding)
+KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding
KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member)
KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g)
KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,))
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index cae473a7b6f7..11c5952e1afa 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -45,7 +45,11 @@ static inline int atomic_fetch_add(int i, atomic_t *v)
static inline void atomic_add(int i, atomic_t *v)
{
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
- if (__builtin_constant_p(i) && (i > -129) && (i < 128)) {
+ /*
+ * Order of conditions is important to circumvent gcc 10 bug:
+ * https://gcc.gnu.org/pipermail/gcc-patches/2020-July/549318.html
+ */
+ if ((i > -129) && (i < 128) && __builtin_constant_p(i)) {
__atomic_add_const(i, &v->counter);
return;
}
@@ -112,7 +116,11 @@ static inline s64 atomic64_fetch_add(s64 i, atomic64_t *v)
static inline void atomic64_add(s64 i, atomic64_t *v)
{
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
- if (__builtin_constant_p(i) && (i > -129) && (i < 128)) {
+ /*
+ * Order of conditions is important to circumvent gcc 10 bug:
+ * https://gcc.gnu.org/pipermail/gcc-patches/2020-July/549318.html
+ */
+ if ((i > -129) && (i < 128) && __builtin_constant_p(i)) {
__atomic64_add_const(i, (long *)&v->counter);
return;
}
diff --git a/arch/s390/include/asm/debug.h b/arch/s390/include/asm/debug.h
index 17a26261f288..c1b82bcc017c 100644
--- a/arch/s390/include/asm/debug.h
+++ b/arch/s390/include/asm/debug.h
@@ -2,7 +2,7 @@
/*
* S/390 debug facility
*
- * Copyright IBM Corp. 1999, 2000
+ * Copyright IBM Corp. 1999, 2020
*/
#ifndef DEBUG_H
#define DEBUG_H
@@ -26,19 +26,14 @@
#define DEBUG_DATA(entry) (char *)(entry + 1) /* data is stored behind */
/* the entry information */
-#define __DEBUG_FEATURE_VERSION 2 /* version of debug feature */
+#define __DEBUG_FEATURE_VERSION 3 /* version of debug feature */
struct __debug_entry {
- union {
- struct {
- unsigned long clock : 52;
- unsigned long exception : 1;
- unsigned long level : 3;
- unsigned long cpuid : 8;
- } fields;
- unsigned long stck;
- } id;
+ unsigned long clock : 60;
+ unsigned long exception : 1;
+ unsigned long level : 3;
void *caller;
+ unsigned short cpu;
} __packed;
typedef struct __debug_entry debug_entry_t;
diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
index fbb507504a3b..3a0ac0c7a9a3 100644
--- a/arch/s390/include/asm/topology.h
+++ b/arch/s390/include/asm/topology.h
@@ -86,12 +86,6 @@ static inline const struct cpumask *cpumask_of_node(int node)
#define pcibus_to_node(bus) __pcibus_to_node(bus)
-#define node_distance(a, b) __node_distance(a, b)
-static inline int __node_distance(int a, int b)
-{
- return 0;
-}
-
#else /* !CONFIG_NUMA */
#define numa_node_id numa_node_id
diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
index 324438889fe1..f09444d6aeab 100644
--- a/arch/s390/include/asm/uaccess.h
+++ b/arch/s390/include/asm/uaccess.h
@@ -32,7 +32,7 @@
#define USER_DS_SACF (3)
#define get_fs() (current->thread.mm_segment)
-#define segment_eq(a,b) (((a) & 2) == ((b) & 2))
+#define uaccess_kernel() ((get_fs() & 2) == KERNEL_DS)
void set_fs(mm_segment_t fs);
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index a8f136943deb..efca70970761 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -49,6 +49,7 @@ CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE)
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o
+obj-$(CONFIG_NUMA) += numa.o
obj-$(CONFIG_AUDIT) += audit.o
compat-obj-$(CONFIG_AUDIT) += compat_audit.o
obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index beb4b44a11d1..b6619ae9a3e0 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -2,7 +2,7 @@
/*
* S/390 debug facility
*
- * Copyright IBM Corp. 1999, 2012
+ * Copyright IBM Corp. 1999, 2020
*
* Author(s): Michael Holzheu (holzheu@de.ibm.com),
* Holger Smolinski (Holger.Smolinski@de.ibm.com)
@@ -433,7 +433,7 @@ static int debug_format_entry(file_private_info_t *p_info)
act_entry = (debug_entry_t *) ((char *)id_snap->areas[p_info->act_area]
[p_info->act_page] + p_info->act_entry);
- if (act_entry->id.stck == 0LL)
+ if (act_entry->clock == 0LL)
goto out; /* empty entry */
if (view->header_proc)
len += view->header_proc(id_snap, view, p_info->act_area,
@@ -829,12 +829,17 @@ static inline debug_entry_t *get_active_entry(debug_info_t *id)
static inline void debug_finish_entry(debug_info_t *id, debug_entry_t *active,
int level, int exception)
{
- active->id.stck = get_tod_clock_fast() -
- *(unsigned long long *) &tod_clock_base[1];
- active->id.fields.cpuid = smp_processor_id();
+ unsigned char clk[STORE_CLOCK_EXT_SIZE];
+ unsigned long timestamp;
+
+ get_tod_clock_ext(clk);
+ timestamp = *(unsigned long *) &clk[0] >> 4;
+ timestamp -= TOD_UNIX_EPOCH >> 12;
+ active->clock = timestamp;
+ active->cpu = smp_processor_id();
active->caller = __builtin_return_address(0);
- active->id.fields.exception = exception;
- active->id.fields.level = level;
+ active->exception = exception;
+ active->level = level;
proceed_active_entry(id);
if (exception)
proceed_active_area(id);
@@ -1398,25 +1403,24 @@ static int debug_hex_ascii_format_fn(debug_info_t *id, struct debug_view *view,
int debug_dflt_header_fn(debug_info_t *id, struct debug_view *view,
int area, debug_entry_t *entry, char *out_buf)
{
- unsigned long base, sec, usec;
+ unsigned long sec, usec;
unsigned long caller;
unsigned int level;
char *except_str;
int rc = 0;
- level = entry->id.fields.level;
- base = (*(unsigned long *) &tod_clock_base[0]) >> 4;
- sec = (entry->id.stck >> 12) + base - (TOD_UNIX_EPOCH >> 12);
+ level = entry->level;
+ sec = entry->clock;
usec = do_div(sec, USEC_PER_SEC);
- if (entry->id.fields.exception)
+ if (entry->exception)
except_str = "*";
else
except_str = "-";
caller = (unsigned long) entry->caller;
- rc += sprintf(out_buf, "%02i %011ld:%06lu %1u %1s %02i %pK ",
+ rc += sprintf(out_buf, "%02i %011ld:%06lu %1u %1s %04u %pK ",
area, sec, usec, level, except_str,
- entry->id.fields.cpuid, (void *)caller);
+ entry->cpu, (void *)caller);
return rc;
}
EXPORT_SYMBOL(debug_dflt_header_fn);
diff --git a/arch/s390/numa/numa.c b/arch/s390/kernel/numa.c
index 51c5a9f6e525..51c5a9f6e525 100644
--- a/arch/s390/numa/numa.c
+++ b/arch/s390/kernel/numa.c
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index b06dec1267d0..ec801d3bbb37 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -160,24 +160,6 @@ asmlinkage void execve_tail(void)
asm volatile("sfpc %0" : : "d" (0));
}
-/*
- * fill in the FPU structure for a core dump.
- */
-int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs)
-{
- save_fpu_regs();
- fpregs->fpc = current->thread.fpu.fpc;
- fpregs->pad = 0;
- if (MACHINE_HAS_VX)
- convert_vx_to_fp((freg_t *)&fpregs->fprs,
- current->thread.fpu.vxrs);
- else
- memcpy(&fpregs->fprs, current->thread.fpu.fprs,
- sizeof(fpregs->fprs));
- return 1;
-}
-EXPORT_SYMBOL(dump_fpu);
-
unsigned long get_wchan(struct task_struct *p)
{
struct unwind_state state;
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index f1fda4375526..10456bc936fb 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -138,7 +138,7 @@
146 common writev sys_writev compat_sys_writev
147 common getsid sys_getsid sys_getsid
148 common fdatasync sys_fdatasync sys_fdatasync
-149 common _sysctl sys_sysctl compat_sys_sysctl
+149 common _sysctl - -
150 common mlock sys_mlock sys_mlock
151 common munlock sys_munlock sys_munlock
152 common mlockall sys_mlockall sys_mlockall
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 1608fd99bbee..2f177298c663 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -2768,7 +2768,7 @@ static struct page *get_map_page(struct kvm *kvm, u64 uaddr)
struct page *page = NULL;
mmap_read_lock(kvm->mm);
- get_user_pages_remote(NULL, kvm->mm, uaddr, 1, FOLL_WRITE,
+ get_user_pages_remote(kvm->mm, uaddr, 1, FOLL_WRITE,
&page, NULL, NULL);
mmap_read_unlock(kvm->mm);
return page;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 66da278a67fb..6b74b92c1a58 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1892,7 +1892,7 @@ static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args)
r = set_guest_storage_key(current->mm, hva, keys[i], 0);
if (r) {
- r = fixup_user_fault(current, current->mm, hva,
+ r = fixup_user_fault(current->mm, hva,
FAULT_FLAG_WRITE, &unlocked);
if (r)
break;
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 2f721a923b54..cd74989ce0b0 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -273,7 +273,7 @@ retry:
rc = get_guest_storage_key(current->mm, vmaddr, &key);
if (rc) {
- rc = fixup_user_fault(current, current->mm, vmaddr,
+ rc = fixup_user_fault(current->mm, vmaddr,
FAULT_FLAG_WRITE, &unlocked);
if (!rc) {
mmap_read_unlock(current->mm);
@@ -319,7 +319,7 @@ retry:
mmap_read_lock(current->mm);
rc = reset_guest_reference_bit(current->mm, vmaddr);
if (rc < 0) {
- rc = fixup_user_fault(current, current->mm, vmaddr,
+ rc = fixup_user_fault(current->mm, vmaddr,
FAULT_FLAG_WRITE, &unlocked);
if (!rc) {
mmap_read_unlock(current->mm);
@@ -390,7 +390,7 @@ static int handle_sske(struct kvm_vcpu *vcpu)
m3 & SSKE_MC);
if (rc < 0) {
- rc = fixup_user_fault(current, current->mm, vmaddr,
+ rc = fixup_user_fault(current->mm, vmaddr,
FAULT_FLAG_WRITE, &unlocked);
rc = !rc ? -EAGAIN : rc;
}
@@ -1094,7 +1094,7 @@ static int handle_pfmf(struct kvm_vcpu *vcpu)
rc = cond_set_guest_storage_key(current->mm, vmaddr,
key, NULL, nq, mr, mc);
if (rc < 0) {
- rc = fixup_user_fault(current, current->mm, vmaddr,
+ rc = fixup_user_fault(current->mm, vmaddr,
FAULT_FLAG_WRITE, &unlocked);
rc = !rc ? -EAGAIN : rc;
}
diff --git a/arch/s390/lib/test_unwind.c b/arch/s390/lib/test_unwind.c
index eb382ceaa116..7c988994931f 100644
--- a/arch/s390/lib/test_unwind.c
+++ b/arch/s390/lib/test_unwind.c
@@ -64,6 +64,7 @@ static noinline int test_unwind(struct task_struct *task, struct pt_regs *regs,
break;
if (state.reliable && !addr) {
pr_err("unwind state reliable but addr is 0\n");
+ kfree(bt);
return -EINVAL;
}
sprint_symbol(sym, addr);
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index aebf9183bedd..4c8c063bce5b 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -476,7 +476,7 @@ retry:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags, regs);
if (fault_signal_pending(fault, regs)) {
fault = VM_FAULT_SIGNAL;
if (flags & FAULT_FLAG_RETRY_NOWAIT)
@@ -486,21 +486,7 @@ retry:
if (unlikely(fault & VM_FAULT_ERROR))
goto out_up;
- /*
- * Major/minor page fault accounting is only done on the
- * initial attempt. If we go through a retry, it is extremely
- * likely that the page will be found in page cache at that point.
- */
if (flags & FAULT_FLAG_ALLOW_RETRY) {
- if (fault & VM_FAULT_MAJOR) {
- tsk->maj_flt++;
- perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
- regs, address);
- } else {
- tsk->min_flt++;
- perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,
- regs, address);
- }
if (fault & VM_FAULT_RETRY) {
if (IS_ENABLED(CONFIG_PGSTE) && gmap &&
(flags & FAULT_FLAG_RETRY_NOWAIT)) {
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c
index 190357ff86b3..373542ca1113 100644
--- a/arch/s390/mm/gmap.c
+++ b/arch/s390/mm/gmap.c
@@ -649,7 +649,7 @@ retry:
rc = vmaddr;
goto out_up;
}
- if (fixup_user_fault(current, gmap->mm, vmaddr, fault_flags,
+ if (fixup_user_fault(gmap->mm, vmaddr, fault_flags,
&unlocked)) {
rc = -EFAULT;
goto out_up;
@@ -879,7 +879,7 @@ static int gmap_pte_op_fixup(struct gmap *gmap, unsigned long gaddr,
BUG_ON(gmap_is_shadow(gmap));
fault_flags = (prot == PROT_WRITE) ? FAULT_FLAG_WRITE : 0;
- if (fixup_user_fault(current, mm, vmaddr, fault_flags, &unlocked))
+ if (fixup_user_fault(mm, vmaddr, fault_flags, &unlocked))
return -EFAULT;
if (unlocked)
/* lost mmap_lock, caller has to retry __gmap_translate */
@@ -2485,23 +2485,36 @@ void gmap_sync_dirty_log_pmd(struct gmap *gmap, unsigned long bitmap[4],
}
EXPORT_SYMBOL_GPL(gmap_sync_dirty_log_pmd);
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+static int thp_split_walk_pmd_entry(pmd_t *pmd, unsigned long addr,
+ unsigned long end, struct mm_walk *walk)
+{
+ struct vm_area_struct *vma = walk->vma;
+
+ split_huge_pmd(vma, pmd, addr);
+ return 0;
+}
+
+static const struct mm_walk_ops thp_split_walk_ops = {
+ .pmd_entry = thp_split_walk_pmd_entry,
+};
+
static inline void thp_split_mm(struct mm_struct *mm)
{
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
struct vm_area_struct *vma;
- unsigned long addr;
for (vma = mm->mmap; vma != NULL; vma = vma->vm_next) {
- for (addr = vma->vm_start;
- addr < vma->vm_end;
- addr += PAGE_SIZE)
- follow_page(vma, addr, FOLL_SPLIT);
vma->vm_flags &= ~VM_HUGEPAGE;
vma->vm_flags |= VM_NOHUGEPAGE;
+ walk_page_vma(vma, &thp_split_walk_ops, NULL);
}
mm->def_flags |= VM_NOHUGEPAGE;
-#endif
}
+#else
+static inline void thp_split_mm(struct mm_struct *mm)
+{
+}
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
/*
* Remove all empty zero pages from the mapping for lazy refaulting
diff --git a/arch/s390/numa/Makefile b/arch/s390/numa/Makefile
deleted file mode 100644
index c89d26f4f77d..000000000000
--- a/arch/s390/numa/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-obj-y += numa.o