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android_kernel_xiaomi_sm8450/arch/s390/include/asm
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Gerald Schaefer 582b4e5540 s390/mm: fix panic in gup_fast on large pud 
On s390 there currently is no implementation of pud_write(). That was ok
as long as we had our own implementation of get_user_pages_fast() which
checked for pud protection by testing the bit directly w/o using
pud_write(). The other callers of pud_write() are not reachable on s390.

After commit 1a42010cdc ("s390/mm: convert to the generic
get_user_pages_fast code") we use the generic get_user_pages_fast(), which
does call pud_write() in pud_access_permitted() for FOLL_WRITE access on
a large pud. Without an s390 specific pud_write(), the generic version is
called, which contains a BUG() statement to remind us that we don't have a
proper implementation. This results in a kernel panic.

Fix this by providing an implementation of pud_write().

Cc: <stable@vger.kernel.org> # 5.2+
Fixes: 1a42010cdc ("s390/mm: convert to the generic get_user_pages_fast code")
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-04 11:18:03 +01:00
..
fpu
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
airq.h
s390/airq: use DMA memory for adapter interrupts
2019-06-15 12:25:05 +02:00
alternative-asm.h
s390: add assembler macros for CPU alternatives
2018-03-28 08:38:27 +02:00
alternative.h
s390/alternatives: make use of asm_inline
2019-10-31 17:20:51 +01:00
ap.h
s390/zcrypt: Fix wrong dispatching for control domain CPRBs
2019-05-28 14:49:38 +02:00
appldata.h
s390/appldata: pass parameter list pointer to appldata_asm
2018-10-09 11:20:50 +02:00
archrandom.h
s390x: Mark archrandom.h functions __must_check
2020-01-25 12:18:51 -05:00
asm-prototypes.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
atomic_ops.h
s390/atomic,bitops: mark function(s) __always_inline
2019-10-04 16:37:33 +02:00
atomic.h
locking/atomic, s390: Use s64 for atomic64
2019-06-03 12:32:56 +02:00
barrier.h
s390: add optimized array_index_mask_nospec
2018-02-05 07:51:41 +01:00
bitops.h
kasan: support instrumented bitops combined with generic bitops
2019-11-07 13:15:39 +11:00
boot_data.h
s390/ipl: read IPL report at early boot
2019-04-26 12:34:05 +02:00
bug.h
s390: fix __EMIT_BUG() macro
2020-01-22 13:05:35 +01:00
bugs.h
s390: add a few more SPDX identifiers
2017-12-05 07:51:09 +01:00
cache.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ccwdev.h
s390/cio: add basic protected virtualization support
2019-06-15 12:25:00 +02:00
ccwgroup.h
s390/ccwgroup: add get_ccwgroupdev_by_busid()
2018-10-08 09:09:59 +02:00
checksum.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
chpid.h
s390/cio: rename struct channel_path_desc
2018-03-26 16:13:11 +02:00
cio.h
s390/cio: move struct node_descriptor to cio.h
2019-06-19 17:54:27 +02:00
clp.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cmb.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cmpxchg.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat.h
compat: provide compat_ptr() on all architectures
2020-01-03 09:32:51 +01:00
cpacf.h
s390: mark __cpacf_query() as __always_inline
2019-10-04 16:37:33 +02:00
cpcmd.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cpu_mcf.h
s390/cpum_cf_diag: Add support for s390 counter facility diagnostic trace
2019-02-22 09:19:56 +01:00
cpu_mf-insn.h
s390/cpu_mf: add store cpu counter multiple instruction support
2019-02-22 09:19:52 +01:00
cpu_mf.h
s390/cpum_sf: Replace function name in debug statements
2019-11-30 10:52:46 +01:00
cpu.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cpufeature.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cputime.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crw.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
css_chars.h
s390/cio: sanitize css_general_characteristics definition
2018-06-12 15:14:05 +02:00
ctl_reg.h
s390/early: move control registers setup in C code
2019-11-20 12:58:12 +01:00
current.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.h
docs: s390: unify and update s390dbf kdocs at debug.c
2019-07-05 13:42:22 +02:00
delay.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
diag.h
s390/kernel: introduce .dma sections
2019-04-29 10:47:10 +02:00
dis.h
s390/tools: generate header files in arch/s390/include/generated/
2018-01-23 07:36:53 +01:00
dma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dwarf.h
s390/vdso: revise CFI annotations of vDSO functions
2017-12-13 10:51:36 +01:00
eadm.h
s390/eadm: fix CONFIG_BLOCK include dependency
2018-02-02 10:47:14 +01:00
ebcdic.h
s390: fix clang -Wpointer-sign warnigns in boot code
2019-05-03 17:17:58 +02:00
elf.h
s390: report new CPU capabilities
2019-04-25 15:34:10 +02:00
exec.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
extable.h
s390/kernel: introduce .dma sections
2019-04-29 10:47:10 +02:00
extmem.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
facility.h
s390: fix stfle zero padding
2019-06-19 17:54:27 +02:00
fcx.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ftrace.h
s390/ftrace: use HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
2019-05-02 13:54:11 +02:00
futex.h
s390: remove all code using the access register mode
2017-11-14 11:01:47 +01:00
gmap.h
s390/mm: use refcount_t for refcount
2019-08-21 12:41:43 +02:00
hardirq.h
softirq/s390: Move default mutators of overwritten softirq mask to s390
2018-05-14 11:25:28 +02:00
hugetlb.h
s390/mm: fix -Wunused-but-set-variable warnings
2019-10-04 16:37:33 +02:00
hw_irq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
idals.h
s390/idal: use struct_size() in kmalloc()
2019-06-04 15:03:18 +02:00
idle.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
io.h
arch: rely on asm-generic/io.h for default ioremap_* definitions
2019-11-11 21:18:19 +01:00
ipl.h
s390/kernel: introduce .dma sections
2019-04-29 10:47:10 +02:00
irq.h
s390/pci: gather statistics for floating vs directed irqs
2019-04-29 10:47:01 +02:00
irqflags.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
isc.h
KVM: s390: add gib_alert_irq_handler()
2019-02-05 14:29:23 +01:00
itcw.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
jump_label.h
s390/jump_label: use "i" constraint for clang
2020-01-22 13:05:35 +01:00
kasan.h
s390/kasan: add option for 4-level paging support
2018-10-09 11:21:29 +02:00
Kbuild
asm-generic: Make dma-contiguous.h a mandatory include/asm header
2020-02-04 11:38:59 +01:00
kdebug.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kexec.h
s390/kernel: build a relocatable kernel
2019-04-29 10:47:10 +02:00
kprobes.h
s390: support KPROBES_ON_FTRACE
2020-01-30 13:07:55 +01:00
kvm_host.h
Merge tag 'kvm-s390-next-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
2020-02-05 16:15:05 +01:00
kvm_para.h
KVM: Introduce paravirtualization hints and KVM_HINTS_DEDICATED
2018-03-06 18:40:44 +01:00
linkage.h
s390/kernel: introduce .dma sections
2019-04-29 10:47:10 +02:00
livepatch.h
livepatch: Remove klp_check_compiler_support()
2019-05-10 17:53:29 -04:00
lowcore.h
s390: fix clang -Wpointer-sign warnigns in boot code
2019-05-03 17:17:58 +02:00
mem_detect.h
s390/mem_detect: provide single get_mem_detect_end
2019-08-26 12:51:18 +02:00
mem_encrypt.h
s390/mm: Remove sev_active() function
2019-08-09 22:52:11 +10:00
mmu_context.h
s390/vdso: correct vdso mapping for compat tasks
2019-01-11 17:12:02 +01:00
mmu.h
s390/vdso: avoid 64-bit vdso mapping for compat tasks
2018-09-20 13:20:29 +02:00
mmzone.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nmi.h
arch: replace _BITUL() in kernel-space headers with BIT()
2019-07-16 19:23:22 -07:00
nospec-branch.h
s390: correct nospec auto detection init order
2018-04-11 17:46:00 +02:00
nospec-insn.h
s390/nospec: rename assembler generated expoline thunks
2019-05-02 13:54:11 +02:00
numa.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
os_info.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page-states.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page.h
s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range
2020-02-17 18:01:57 +01:00
pci_clp.h
PCI: Add PCI_STD_NUM_BARS for the number of standard BARs
2019-10-14 10:22:26 -05:00
pci_debug.h
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
pci_dma.h
s390: move s390_pci_dma_ops to asm/pci_dma.h
2018-01-10 16:41:19 +01:00
pci_insn.h
s390: fix setting of mio addressing control
2019-07-11 20:40:02 +02:00
pci_io.h
s390/pci: move io address mapping code to pci_insn.c
2019-04-29 10:47:01 +02:00
pci.h
s390/pci: Recover handle in clp_set_pci_fn()
2020-01-22 13:05:34 +01:00
percpu.h
s390: enforce CONFIG_SMP
2019-06-07 10:09:37 +02:00
perf_event.h
s390: implement perf_arch_fetch_caller_regs
2019-11-30 10:52:44 +01:00
pgalloc.h
s390/mm: add mm_pxd_folded() checks to pxd_free()
2019-10-31 17:20:54 +01:00
pgtable.h
s390/mm: fix panic in gup_fast on large pud
2020-03-04 11:18:03 +01:00
pkey.h
s390/pkey: pkey cleanup: narrow in-kernel API, fix some variable types
2019-08-21 12:58:53 +02:00
pnet.h
s390/net: move pnet constants
2019-02-07 18:06:18 -08:00
preempt.h
sched/rt, s390: Use CONFIG_PREEMPTION
2019-12-08 14:37:35 +01:00
processor.h
s390: remove obsolete ieee_emulation_warnings
2020-02-19 13:51:46 +01:00
ptrace.h
arch: replace _BITUL() in kernel-space headers with BIT()
2019-07-16 19:23:22 -07:00
purgatory.h
s390/purgatory: Remove duplicate variable definitions
2018-07-06 08:47:51 +02:00
qdio.h
s390/qdio: fill SBALEs with absolute addresses
2020-02-19 17:26:32 +01:00
runtime_instr.h
s390/runtime instrumentation: provide uapi header file
2018-02-02 10:47:15 +01:00
schid.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sclp.h
s390/ipl: Fix detection of has_secure attribute
2019-07-11 20:40:02 +02:00
scsw.h
s390: fix comment for scsw_cmd_is_valid_sctl
2018-02-22 15:31:24 +01:00
seccomp.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sections.h
locking/lockdep: check for freed initmem in static_obj()
2019-04-29 10:47:10 +02:00
serial.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
set_memory.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
setup.h
s390/boot: add dfltcc= kernel command line parameter
2020-01-31 10:30:40 -08:00
shmparam.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
signal.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sigp.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
smp.h
s390: enforce CONFIG_HOTPLUG_CPU
2019-06-07 10:09:42 +02:00
sparsemem.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
spinlock_types.h
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
spinlock.h
s390/alternatives: make use of asm_inline
2019-10-31 17:20:51 +01:00
stacktrace.h
s390: fix register clobbering in CALL_ON_STACK
2019-11-30 10:52:47 +01:00
stp.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
string.h
s390/kasan: provide uninstrumented __strlen
2019-08-21 12:58:52 +02:00
switch_to.h
s390: always save and restore all registers on context switch
2017-12-05 07:51:08 +01:00
syscall_wrapper.h
s390: syscall_wrapper: avoid clang warning
2019-04-11 13:36:51 +02:00
syscall.h
Merge tag 'audit-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2019-05-07 19:06:04 -07:00
sysinfo.h
s390/sysinfo: add and display licensed internal code identifier
2018-02-02 10:47:15 +01:00
termios.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
thread_info.h
arch: replace _BITUL() in kernel-space headers with BIT()
2019-07-16 19:23:22 -07:00
timex.h
s390/time: Fix clk type in get_tod_clock
2020-02-11 20:15:42 +01:00
tlb.h
s390/tlb: Convert to generic mmu_gather
2019-04-03 10:32:57 +02:00
tlbflush.h
s390: enforce CONFIG_SMP
2019-06-07 10:09:37 +02:00
topology.h
s390/topology: fix compile error in file arch/s390/kernel/smp.c
2017-11-20 08:51:01 +01:00
uaccess.h
s390/uaccess: avoid (false positive) compiler warnings
2019-10-11 12:27:25 +02:00
unistd.h
s390: wire up clone3 system call
2019-07-23 10:45:53 +02:00
unwind.h
s390/unwind: start unwinding from reliable state
2019-11-30 10:52:48 +01:00
uprobes.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
user.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
uv.h
s390/uv: use EOPNOTSUPP instead of ENOTSUPP
2019-12-11 19:53:24 +01:00
vdso.h
s390/vdso: fix getcpu
2019-11-30 10:52:44 +01:00
vga.h
s390: add a few more SPDX identifiers
2017-12-05 07:51:09 +01:00
vmalloc.h
mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h>
2019-12-10 10:12:55 +01:00
vmlinux.lds.h
s390: introduce .boot.preserved.data section
2019-04-10 17:47:09 +02:00
vtime.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vtimer.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vx-insn.h
s390: add alignment hints to vector load and store
2019-02-07 11:57:10 +01:00
xor.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00