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b3c395ef55
linux_dsm_epyc7002/arch/s390/include/asm
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David Hildenbrand b3c395ef55 mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 
In general, non-atomic variants of user access functions must not sleep
if pagefaults are disabled.

Let's update all relevant comments in uaccess code. This also reflects
the might_sleep() checks in might_fault().

Reviewed-and-tested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: David.Laight@ACULAB.COM
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: airlied@linux.ie
Cc: akpm@linux-foundation.org
Cc: benh@kernel.crashing.org
Cc: bigeasy@linutronix.de
Cc: borntraeger@de.ibm.com
Cc: daniel.vetter@intel.com
Cc: heiko.carstens@de.ibm.com
Cc: herbert@gondor.apana.org.au
Cc: hocko@suse.cz
Cc: hughd@google.com
Cc: mst@redhat.com
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: schwidefsky@de.ibm.com
Cc: yang.shi@windriver.com
Link: http://lkml.kernel.org/r/1431359540-32227-4-git-send-email-dahi@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-19 08:39:14 +02:00
..
airq.h
appldata.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
asm-offsets.h
atomic.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
barrier.h arch: Add lightweight memory barriers dma_rmb() and dma_wmb() 2014-12-11 21:15:06 -05:00
bitops.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
bug.h
bugs.h
cache.h
cacheflush.h mm/debug_pagealloc: fix build failure on ppc and some other archs 2015-02-05 13:35:30 -08:00
ccwdev.h s390/cio: fix multiple structure definitions 2014-05-20 08:58:53 +02:00
ccwgroup.h s390: fix new ccwgroup.h kernel-doc warning 2014-05-20 08:58:45 +02:00
checksum.h
chpid.h s390/cio: fix multiple structure definitions 2014-05-20 08:58:53 +02:00
cio.h
clp.h
cmb.h
cmpxchg.h s390/cmpxchg: simplify cmpxchg_double 2015-03-25 11:49:36 +01:00
compat.h
cpcmd.h
cpu_mf.h s390: add SMT support 2015-01-22 12:16:01 +01:00
cpu.h
cputime.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
crw.h
css_chars.h
ctl_reg.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
current.h
debug.h s390/debug: avoid function call for debug_sprintf_* 2014-12-08 09:42:29 +01:00
delay.h
device.h
diag.h
dis.h s390/disassembler: add vector instructions 2014-10-09 09:14:15 +02:00
div64.h
dma-mapping.h s390: Use bool function return values of true/false not 1/0 2015-04-15 12:23:48 +02:00
dma.h
eadm.h
ebcdic.h
elf.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2015-04-14 20:51:44 -07:00
emergency-restart.h
etr.h
exec.h
extmem.h
facility.h
fb.h
fcx.h
ftrace.h s390/ftrace: hotpatch support for function tracing 2015-01-29 09:19:25 +01:00
futex.h s390/uaccess: simplify control register updates 2014-05-20 08:58:46 +02:00
hardirq.h
hugetlb.h
hw_irq.h
idals.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
idle.h s390/idle: convert open coded idle time seqcount 2014-12-08 09:42:32 +01:00
io.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2014-12-11 17:30:55 -08:00
ipl.h s390/kdump: add support for vector extension 2014-10-09 09:14:16 +02:00
irq_regs.h
irq.h s390: fix /proc/interrupts output 2015-03-25 11:41:41 -04:00
irqflags.h s390/kernel: use stnsm 255 instead of stosm 0 2014-12-18 13:37:15 +01:00
isc.h
itcw.h
jump_label.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2015-04-14 20:51:44 -07:00
Kbuild net, lib: kill arch_fast_hash library bits 2014-12-10 15:17:46 -05:00
kdebug.h
kexec.h kexec: allocate the kexec control page with KEXEC_CONTROL_MEMORY_GFP 2015-04-23 16:52:01 +02:00
kmap_types.h
kprobes.h s390/ftrace,kprobes: allow to patch first instruction 2014-10-27 13:27:27 +01:00
kvm_host.h KVM: s390: deliver floating interrupts in order of priority 2015-03-31 21:07:27 +02:00
kvm_para.h
linkage.h
livepatch.h livepatch: add support on s390 2015-03-27 15:05:32 +01:00
local64.h
local.h
lowcore.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
mathemu.h
mman.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
mmu_context.h s390/kvm: remove delayed reallocation of page tables for KVM 2015-04-23 16:55:49 +02:00
mmu.h s390/kvm: remove delayed reallocation of page tables for KVM 2015-04-23 16:55:49 +02:00
module.h
mutex.h
nmi.h s390: add support for vector extension 2014-10-09 09:14:13 +02:00
os_info.h
page.h s390: let the compiler do page clearing 2015-02-26 09:24:49 +01:00
pci_clp.h s390/pci: add some new arch specific pci attributes 2014-05-20 08:58:50 +02:00
pci_debug.h
pci_dma.h
pci_insn.h
pci_io.h s390: add pci_iomap_range 2015-01-21 16:28:49 +10:30
pci.h s390/pci: add locking for fmb access 2015-04-15 12:23:53 +02:00
percpu.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
perf_event.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
pgalloc.h s390/kvm: remove delayed reallocation of page tables for KVM 2015-04-23 16:55:49 +02:00
pgtable.h s390/mm: change swap pte encoding and pgtable cleanup 2015-04-23 16:56:20 +02:00
processor.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
ptrace.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
qdio.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
reset.h s390: add SMT support 2015-01-22 12:16:01 +01:00
runtime_instr.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
rwsem.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
schid.h
sclp.h Fairly small update, but there are some interesting new features. 2015-02-13 09:55:09 -08:00
scsw.h
seccomp.h
sections.h
segment.h
serial.h
setup.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
sfp-machine.h
sfp-util.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
shmparam.h
signal.h
sigp.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2015-02-11 17:42:32 -08:00
smp.h s390: add SMT support 2015-01-22 12:16:01 +01:00
sparsemem.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
spinlock_types.h s390/rwlock: use directed yield for write-locked rwlocks 2014-09-25 10:52:05 +02:00
spinlock.h s390/cmpxchg: use compiler builtins 2014-11-03 13:29:47 +01:00
string.h lib/string.c: remove strnicmp() 2015-02-12 18:54:14 -08:00
switch_to.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
syscall.h s390/syscalls: simplify syscall_get_arch() 2015-03-30 13:26:07 +02:00
sysinfo.h Fairly small update, but there are some interesting new features. 2015-02-13 09:55:09 -08:00
termios.h
thread_info.h Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc 2015-04-15 13:53:55 -07:00
timex.h s390/timex: fix get_tod_clock_ext() inline assembly 2015-01-07 09:52:47 +01:00
tlb.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
tlbflush.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
topology.h s390/topology: convert cpu_topology array to per cpu variable 2015-02-12 09:37:22 +01:00
types.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
uaccess.h mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
unaligned.h
unistd.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
uprobes.h s390/uprobes: architecture backend for uprobes 2014-09-25 10:52:17 +02:00
user.h
vdso.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
vga.h
vtime.h
vtimer.h s390/idle: consolidate idle functions and definitions 2014-10-09 09:14:03 +02:00
xor.h