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i2som-imx-linux/include/asm-generic
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Chintan Pandya a34806961b ioremap: Update pgtable free interfaces with addr 
commit 785a19f9d1 upstream.

The following kernel panic was observed on ARM64 platform due to a stale
TLB entry.

 1. ioremap with 4K size, a valid pte page table is set.
 2. iounmap it, its pte entry is set to 0.
 3. ioremap the same address with 2M size, update its pmd entry with
    a new value.
 4. CPU may hit an exception because the old pmd entry is still in TLB,
    which leads to a kernel panic.

Commit b6bdb7517c ("mm/vmalloc: add interfaces to free unmapped page
table") has addressed this panic by falling to pte mappings in the above
case on ARM64.

To support pmd mappings in all cases, TLB purge needs to be performed
in this case on ARM64.

Add a new arg, 'addr', to pud_free_pmd_page() and pmd_free_pte_page()
so that TLB purge can be added later in seprate patches.

[toshi.kani@hpe.com: merge changes, rewrite patch description]
Fixes: 28ee90fe60 ("x86/mm: implement free pmd/pte page interfaces")
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: mhocko@suse.com
Cc: akpm@linux-foundation.org
Cc: hpa@zytor.com
Cc: linux-mm@kvack.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: Will Deacon <will.deacon@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: stable@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20180627141348.21777-3-toshi.kani@hpe.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-17 21:01:11 +02:00
..
bitops
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
4level-fixup.h
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5level-fixup.h
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2017-11-02 11:10:55 +01:00
asm-offsets.h
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asm-prototypes.h
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2017-11-02 11:10:55 +01:00
atomic64.h
locking/atomic: Fix atomic_set_release() for 'funny' architectures
2017-08-10 12:28:54 +02:00
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
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bitops.h
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bitsperlong.h
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bug.h
bug.h: work around GCC PR82365 in BUG()
2018-05-30 07:52:00 +02:00
bugs.h
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cache.h
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cacheflush.h
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checksum.h
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clkdev.h
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cmpxchg-local.h
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cmpxchg.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.h
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2017-11-02 11:10:55 +01:00
early_ioremap.h
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2017-11-02 11:10:55 +01:00
emergency-restart.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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ftrace.h
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futex.h
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getorder.h
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gpio.h
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hardirq.h
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hugetlb.h
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hw_irq.h
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ide_iops.h
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int-ll64.h
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io.h
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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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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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2017-11-02 11:10:55 +01:00
mm_hooks.h
arch, mm: Allow arch_dup_mmap() to fail
2017-12-29 17:53:43 +01:00
mm-arch-hooks.h
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mmu_context.h
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mmu.h
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module.h
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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-nop4d-hack.h
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pgtable-nop4d.h
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pgtable-nopmd.h
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pgtable-nopud.h
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pgtable.h
ioremap: Update pgtable free interfaces with addr
2018-08-17 21:01:11 +02:00
preempt.h
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ptrace.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
locking: Remove spin_unlock_wait() generic definitions
2017-08-17 08:08:58 -07:00
resource.h
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rwsem.h
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seccomp.h
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sections.h
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segment.h
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serial.h
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set_memory.h
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signal.h
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simd.h
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sizes.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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2017-11-02 11:10:55 +01:00
tlb.h
mm: fix MADV_[FREE|DONTNEED] TLB flush miss problem
2017-08-10 15:54:07 -07:00
tlbflush.h
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topology.h
cpumask: fix spurious cpumask_of_node() on non-NUMA multi-node configs
2017-08-28 16:13:16 -07:00
trace_clock.h
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uaccess.h
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unaligned.h
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unistd.h
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user.h
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vga.h
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vmlinux.lds.h
earlycon: Use a pointer table to fix __earlycon_table stride
2018-05-01 12:58:24 -07:00
vtime.h
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word-at-a-time.h
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xor.h
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