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941711a3a0
linux/arch/powerpc/mm
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Aneesh Kumar K.V 941711a3a0 powerpc/mm/hash: Use context ids 1-4 for the kernel 
Currently we use the top 4 context ids (0x7fffc-0x7ffff) for the kernel.
Kernel VSIDs are built using these top context values and effective the
segement ID. In subsequent patches we want to increase the max effective
address to 512TB. We will achieve that by increasing the effective
segment IDs there by increasing virtual address range.

We will be switching to a 68bit virtual address in the following patch.
But platforms like Power4 and Power5 only support a 65 bit virtual
address. We will handle that by limiting the context bits to 16 instead
of 19 on those platforms. That means the max context id will have a
different value on different platforms.

So that we don't have to deal with the kernel context ids changing
between different platforms, move the kernel context ids down to use
context ids 1-4.

We can't use segment 0 of context-id 0, because that maps to VSID 0,
which we want to keep as invalid, so we avoid context-id 0 entirely.
Similarly we can't use the last segment of the maximum context, so we
avoid it too.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Switch from 0-3 to 1-4 so VSID=0 remains invalid]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-03-31 23:09:59 +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
copro_fault.c powerpc/mm: Update PROTFAULT handling in the page fault path 2017-02-15 20:02:39 +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: Move mmap_sem unlocking in do_page_fault() 2017-03-21 22:09:18 +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 powerpc/32: Remove Mac-on-Linux/rtlinux hooks 2017-03-21 22:09:26 +11:00
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: Move copy_mm_to_paca to paca.c 2017-03-31 23:09:54 +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/mm/nohash: MM_SLICE is only used by book3s 64 2017-03-31 23:09:47 +11:00
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/hugetlb: Filter out hugepage size not supported by page table layout 2017-03-31 23:09:50 +11:00
icswx_pid.c
icswx.c powerpc: Fix typo "CONFIG_ICSWX_PID" 2013-04-18 13:03:54 +10:00
icswx.h
init_32.c powerpc/32: Add missing \n and switch to pr_warn() 2016-09-13 17:37:11 +10:00
init_64.c powerpc/mm: Remove checks that TASK_SIZE_USER64 is too small 2017-03-31 23:09:55 +11:00
init-common.c Merge branch 'topic/ppc-kvm' into next 2017-02-14 17:18:29 +11:00
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
mem.c powerpc/pseries: Automatically resize HPT for memory hot add/remove 2017-02-10 13:28:02 +11:00
mmap.c sched/headers: Prepare for new header dependencies before moving more code to <linux/sched/mm.h> 2017-03-02 08:42:30 +01:00
mmu_context_book3s64.c powerpc/mm/hash: Use context ids 1-4 for the kernel 2017-03-31 23:09:59 +11:00
mmu_context_hash32.c powerpc: Remove power3 from comments 2014-07-28 14:10:26 +10:00
mmu_context_iommu.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
mmu_context_nohash.c powerpc/mm/nohash: MM_SLICE is only used by book3s 64 2017-03-31 23:09:47 +11:00
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: Drop GPL from of_node_to_nid() export to match other arches 2017-02-10 13:28:05 +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 Merge branch 'topic/ppc-kvm' into next 2017-02-14 17:18:29 +11:00
pgtable-book3e.c powerpc/mm: Make page table size a variable 2016-05-01 18:32:48 +10:00
pgtable-book3s64.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
pgtable-hash64.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
pgtable-radix.c powerpc fixes for 4.11 #3 2017-03-07 10:46:10 -08:00
pgtable.c powerpc/mm: Fix typo in set_pte_at() 2017-02-17 22:16:25 +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_low.S powerpc/mm/hash: Use context ids 1-4 for the kernel 2017-03-31 23:09:59 +11:00
slb.c powerpc/mm: Move copy_mm_to_paca to paca.c 2017-03-31 23:09:54 +11:00
slice.c powerpc/mm/slice: Update slice mask printing to use bitmap printing. 2017-03-31 23:09:56 +11:00
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_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_low.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-radix.c powerpc/mm/radix: rename _PAGE_LARGE to R_PAGE_LARGE 2017-03-31 23:09:49 +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