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linux/include/asm-generic
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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
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asm-offsets.h
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asm-prototypes.h
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atomic64.h
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atomic-instrumented.h
asm-generic, atomic-instrumented: Use generic instrumented.h
2020-03-21 09:41:42 +01:00
atomic-long.h
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atomic.h
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audit_change_attr.h
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audit_dir_write.h
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audit_read.h
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audit_signal.h
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audit_write.h
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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
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bug.h
bug: Annotate WARN/BUG/stackfail as noinstr safe
2020-06-11 15:14:36 +02:00
bugs.h
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cache.h
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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
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cmpxchg.h
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compat.h
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current.h
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delay.h
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device.h
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div64.h
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dma-contiguous.h
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dma-mapping.h
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dma.h
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early_ioremap.h
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emergency-restart.h
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error-injection.h
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exec.h
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export.h
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extable.h
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fb.h
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fixmap.h
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flat.h
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ftrace.h
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futex.h
generic arch_futex_atomic_op_inuser() doesn't need access_ok()
2020-03-27 23:58:55 -04:00
getorder.h
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gpio.h
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hardirq.h
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hugetlb.h
mm: Allow arches to provide ptep_get()
2020-06-20 22:14:53 +10:00
hw_irq.h
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hyperv-tlfs.h
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2020-06-03 15:13:47 -07:00
ide_iops.h
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int-ll64.h
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io.h
mm: introduce include/linux/pgtable.h
2020-06-09 09:39:13 -07:00
ioctl.h
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iomap.h
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irq_regs.h
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irq_work.h
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irq.h
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irqflags.h
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Kbuild
arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>
2020-04-23 10:50:26 +09:00
kdebug.h
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kmap_types.h
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kprobes.h
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kvm_para.h
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linkage.h
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local64.h
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local.h
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mcs_spinlock.h
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memory_model.h
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mm_hooks.h
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mm-arch-hooks.h
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mmiowb_types.h
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mmiowb.h
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mmu_context.h
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mmu.h
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module.h
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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
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page.h
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param.h
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parport.h
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pci_iomap.h
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pci.h
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percpu.h
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pgalloc.h
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pgtable_uffd.h
userfaultfd: wp: add pmd_swp_*uffd_wp() helpers
2020-04-07 10:43:39 -07:00
pgtable-nop4d.h
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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
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qrwlock_types.h
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qrwlock.h
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qspinlock_types.h
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qspinlock.h
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resource.h
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seccomp.h
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sections.h
vmlinux.lds.h: Create section for protection against instrumentation
2020-05-19 15:47:20 +02:00
serial.h
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set_memory.h
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shmparam.h
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signal.h
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simd.h
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spinlock.h
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statfs.h
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string.h
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switch_to.h
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syscall.h
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syscalls.h
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termios-base.h
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termios.h
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timex.h
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tlb.h
mm/vma: replace all remaining open encodings with is_vm_hugetlb_page()
2020-04-07 10:43:37 -07:00
tlbflush.h
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topology.h
include/asm-generic/topology.h: guard cpumask_of_node() macro argument
2020-05-28 11:35:41 -07:00
trace_clock.h
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uaccess.h
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unaligned.h
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user.h
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vermagic.h
arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>
2020-04-23 10:50:26 +09:00
vga.h
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vmlinux.lds.h
vmlinux.lds.h: Create section for protection against instrumentation
2020-05-19 15:47:20 +02:00
vtime.h
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word-at-a-time.h
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xor.h
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