Christophe Leroy 481e980a7c mm: Allow arches to provide ptep_get() ... Since commit 9e343b467c ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses") it is not possible anymore to use READ_ONCE() to access complex page table entries like the one defined for powerpc 8xx with 16k size pages. Define a ptep_get() helper that architectures can override instead of performing a READ_ONCE() on the page table entry pointer. Fixes: 9e343b467c ("READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Will Deacon <will@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/087fa12b6e920e32315136b998aa834f99242695.1592225558.git.christophe.leroy@csgroup.eu		2020-06-20 22:14:53 +10:00
..
bitops	asm-generic, kcsan: Add KCSAN instrumentation for bitops	2020-03-21 09:41:46 +01:00
vdso	lib/vdso: Avoid highres update if clocksource is not VDSO capable	2020-02-17 20:12:17 +01:00
asm-offsets.h
asm-prototypes.h
atomic64.h
atomic-instrumented.h	asm-generic, atomic-instrumented: Use generic instrumented.h	2020-03-21 09:41:42 +01:00
atomic-long.h	asm-generic/atomic: Use __always_inline for pure wrappers	2020-01-07 07:47:23 -08:00
atomic.h
audit_change_attr.h
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h
barrier.h	locking/barriers: Use '__unqual_scalar_typeof' for load-acquire macros	2020-04-16 12:28:34 +01:00
bitops.h	asm-generic/bitops: Update stale comment	2020-03-06 11:06:19 +01:00
bitsperlong.h
bug.h	bug: Annotate WARN/BUG/stackfail as noinstr safe	2020-06-11 15:14:36 +02:00
bugs.h
cache.h
cacheflush.h	asm-generic: add a flush_icache_user_range stub	2020-06-08 11:05:58 -07:00
checksum.h	take the dummy csum_and_copy_from_user() into net/checksum.h	2020-05-29 16:11:50 -04:00
cmpxchg-local.h
cmpxchg.h
compat.h
current.h
delay.h
device.h
div64.h
dma-contiguous.h
dma-mapping.h
dma.h
early_ioremap.h
emergency-restart.h
error-injection.h
exec.h
export.h	export.h: reduce __ksymtab_strings string duplication by using "MS" section flags	2019-12-16 10:35:33 +01:00
extable.h
fb.h
fixmap.h
flat.h
ftrace.h
futex.h	generic arch_futex_atomic_op_inuser() doesn't need access_ok()	2020-03-27 23:58:55 -04:00
getorder.h
gpio.h	gpio: Avoid kernel.h inclusion where it's possible	2020-02-10 12:58:36 +01:00
hardirq.h
hugetlb.h	mm: Allow arches to provide ptep_get()	2020-06-20 22:14:53 +10:00
hw_irq.h
hyperv-tlfs.h	ARM:	2020-06-03 15:13:47 -07:00
ide_iops.h
int-ll64.h
io.h	mm: introduce include/linux/pgtable.h	2020-06-09 09:39:13 -07:00
ioctl.h
iomap.h	remove ioremap_nocache and devm_ioremap_nocache	2020-01-06 09:45:59 +01:00
irq_regs.h
irq_work.h
irq.h
irqflags.h
Kbuild	arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>	2020-04-23 10:50:26 +09:00
kdebug.h
kmap_types.h
kprobes.h
kvm_para.h
linkage.h
local64.h
local.h
mcs_spinlock.h
memory_model.h
mm_hooks.h	mm: remove arch_bprm_mm_init() hook	2020-01-23 10:41:16 -08:00
mm-arch-hooks.h
mmiowb_types.h
mmiowb.h
mmu_context.h
mmu.h
module.h
mshyperv.h	x86/Hyper-V: Report crash data in die() when panic_on_oops is set	2020-04-11 17:19:07 +01:00
msi.h
page.h
param.h
parport.h
pci_iomap.h
pci.h
percpu.h	percpu: fix __percpu annotation in asm-generic	2020-01-31 11:15:59 -08:00
pgalloc.h
pgtable_uffd.h	userfaultfd: wp: add pmd_swp_*uffd_wp() helpers	2020-04-07 10:43:39 -07:00
pgtable-nop4d.h
pgtable-nopmd.h	mm: consolidate pte_index() and pte_offset_*() definitions	2020-06-09 09:39:14 -07:00
pgtable-nopud.h	mm: consolidate pte_index() and pte_offset_*() definitions	2020-06-09 09:39:14 -07:00
preempt.h
qrwlock_types.h
qrwlock.h
qspinlock_types.h
qspinlock.h
resource.h
seccomp.h
sections.h	vmlinux.lds.h: Create section for protection against instrumentation	2020-05-19 15:47:20 +02:00
serial.h
set_memory.h
shmparam.h
signal.h
simd.h
spinlock.h
statfs.h
string.h
switch_to.h
syscall.h
syscalls.h
termios-base.h
termios.h
timex.h
tlb.h	mm/vma: replace all remaining open encodings with is_vm_hugetlb_page()	2020-04-07 10:43:37 -07:00
tlbflush.h
topology.h	include/asm-generic/topology.h: guard cpumask_of_node() macro argument	2020-05-28 11:35:41 -07:00
trace_clock.h
uaccess.h
unaligned.h
user.h
vermagic.h	arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>	2020-04-23 10:50:26 +09:00
vga.h
vmlinux.lds.h	vmlinux.lds.h: Create section for protection against instrumentation	2020-05-19 15:47:20 +02:00
vtime.h
word-at-a-time.h
xor.h