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alistair23-linux/arch/powerpc/mm
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Reza Arbab 4b5d62ca17 powerpc/mm: add radix__remove_section_mapping() 
Tear down and free the four-level page tables of physical mappings
during memory hotremove.

Borrow the basic structure of remove_pagetable() and friends from the
identically-named x86 functions. Reduce the frequency of tlb flushes and
page_table_lock spinlocks by only doing them in the outermost function.
There was some question as to whether the locking is needed at all.
Leave it for now, but we could consider dropping it.

Memory must be offline to be removed, thus not in use. So there
shouldn't be the sort of concurrent page walking activity here that
might prompt us to use RCU.

Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 		2017-01-31 13:54:19 +11:00
..
8xx_mmu.c powerpc/8xx: add CONFIG_PIN_TLB_IMMR 2016-07-09 02:02:48 -05:00
40x_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
44x_mmu.c powerpc: Delete __cpuinit usage from all users 2013-07-01 11:10:36 +10:00
Makefile Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next 2016-12-16 15:05:38 +11:00
copro_fault.c powerpc/mm/coproc: Handle bad address on coproc slb fault 2016-11-22 11:57:08 +11:00
dma-noncoherent.c powerpc: Simplify test in __dma_sync() 2016-03-11 17:20:12 -06:00
dump_hashpagetable.c powerpc/mm: Dump hash table 2016-11-17 17:11:47 +11:00
dump_linuxpagetables.c powerpc/mm: Fix page table dump build on non-Book3S 2016-12-01 16:20:18 +11:00
fault.c powerpc/mm: Fix no execute fault handling on pre-POWER5 2016-11-30 17:19:01 +11:00
fsl_booke_mmu.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
hash64_4k.c powerpc/mm: Fix lazy icache flush on pre-POWER5 2016-11-29 23:59:40 +11:00
hash64_64k.c powerpc/mm: Fix lazy icache flush on pre-POWER5 2016-11-29 23:59:40 +11:00
hash_low_32.S ppc: move exports to definitions 2016-08-07 23:50:09 -04:00
hash_native_64.c Merge branch 'topic/ppc-kvm' into next 2016-11-24 22:14:52 +11:00
hash_utils_64.c powerpc/mm: Fix memory hotplug BUG() on radix 2017-01-17 10:05:43 +11:00
highmem.c sched/preempt, mm/kmap: Explicitly disable/enable preemption in kmap_atomic_* 2015-05-19 08:39:14 +02:00
hugepage-hash64.c powerpc/mm: Move hash table ops to a separate structure 2016-07-21 18:59:09 +10:00
hugetlbpage-book3e.c powerpc/fsl-book3e: Avoid lbarx on e5500 2016-03-03 23:43:05 -06:00
hugetlbpage-hash64.c powerpc/mm: Remove the debug hugepd_ok check 2017-01-23 19:19:28 +11:00
hugetlbpage-radix.c powerpc/mm/hugetlb: Add flush_hugetlb_tlb_range 2016-08-01 11:15:13 +10:00
hugetlbpage.c powerpc/mm: Fix little-endian 4K hugetlb 2017-01-18 11:58:50 +11:00
icswx.c powerpc: Fix typo "CONFIG_ICSWX_PID" 2013-04-18 13:03:54 +10:00
icswx.h powerpc/icswx: Fix race condition with IPI setting ACOP 2012-03-07 17:06:09 +11:00
icswx_pid.c powerpc: Split ICSWX ACOP and PID processing 2011-11-25 14:11:27 +11:00
init-common.c powerpc: Fix pgtable pmd cache init 2017-01-18 11:58:30 +11:00
init_32.c powerpc/32: Add missing \n and switch to pr_warn() 2016-09-13 17:37:11 +10:00
init_64.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mem.c powerpc: Fix build with CONFIG_MEMORY_HOTPLUG on some configs 2016-07-07 16:33:27 +10:00
mmap.c powerpc/mm/radix: Pick the address layout for radix config 2016-05-11 21:53:47 +10:00
mmu_context_book3s64.c powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown 2016-12-02 14:38:34 +11:00
mmu_context_hash32.c powerpc: Remove power3 from comments 2014-07-28 14:10:26 +10:00
mmu_context_iommu.c powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown 2016-12-02 14:38:34 +11:00
mmu_context_nohash.c powerpc/mmu nohash: Convert to hotplug state machine 2016-09-06 18:30:27 +02:00
mmu_decl.h powerpc/8xx: Map IMMR area with 512k page at a fixed address 2016-07-09 02:02:48 -05:00
numa.c powerpc/mm: Allow memory hotplug into an offline node 2017-01-30 16:49:36 +11:00
pgtable-book3e.c powerpc/mm: Make page table size a variable 2016-05-01 18:32:48 +10:00
pgtable-book3s64.c powerpc/mm: add radix__remove_section_mapping() 2017-01-31 13:54:19 +11:00
pgtable-hash64.c powerpc/mm/thp: Abstraction for THP functions 2016-05-11 21:53:57 +10:00
pgtable-radix.c powerpc/mm: add radix__remove_section_mapping() 2017-01-31 13:54:19 +11:00
pgtable.c powerpc/mm: update radix__ptep_set_access_flag to not do full mm tlb flush 2016-11-28 22:44:33 +11:00
pgtable_32.c powerpc: port 64 bits pgtable_cache to 32 bits 2016-12-09 22:48:01 -06:00
pgtable_64.c powerpc/powernv: Initialise nest mmu 2017-01-30 20:24:33 +11:00
ppc_mmu_32.c powerpc32: refactor x_mapped_by_bats() and x_mapped_by_tlbcam() together 2016-03-11 17:18:02 -06:00
slb.c powerpc/mm: Remove long disabled SLB code 2016-04-11 20:30:40 +10:00
slb_low.S powerpc updates for 4.9 2016-10-07 20:19:31 -07:00
slice.c powerpc/mm/radix: Add checks in slice code to catch radix usage 2016-05-11 21:53:46 +10:00
subpage-prot.c powerpc/mm: Return directly after a failed __copy_from_user() in sys_subpage_prot() 2017-01-25 13:34:22 +11:00
tlb-radix.c powerpc updates for 4.10 2016-12-16 09:26:42 -08:00
tlb_hash32.c powerpc/mm: remove flush_tlb_page_nohash 2016-08-01 11:15:13 +10:00
tlb_hash64.c powerpc/mm: Hash abstraction for tlbflush routines 2016-05-01 18:33:08 +10:00
tlb_low_64e.S powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
tlb_nohash.c powerpc/8xx: Implement support of hugepages 2016-12-09 22:49:07 -06:00
tlb_nohash_low.S powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
vphn.c powerpc/vphn: parsing code rewrite 2015-03-18 10:48:59 +11:00
vphn.h powerpc/vphn: parsing code rewrite 2015-03-18 10:48:59 +11:00