linux/arch/powerpc/mm
Anton Blanchard de4376c284 powerpc: Preload application text segment instead of TASK_UNMAPPED_BASE
TASK_UNMAPPED_BASE is not used with the new top down mmap layout. We can
reuse this preload slot by loading in the segment at 0x10000000, where almost
all PowerPC binaries are linked at.

On a microbenchmark that bounces a token between two 64bit processes over pipes
and calls gettimeofday each iteration (to access the VDSO), both the 32bit and
64bit context switch rate improves (tested on a 4GHz POWER6):

32bit: 273k/sec -> 283k/sec
64bit: 277k/sec -> 284k/sec

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-08-20 10:12:26 +10:00
..
40x_mmu.c powerpc/40x: Limit allocable DRAM during early mapping 2008-11-13 10:10:56 -05:00
44x_mmu.c powerpc: rework 4xx PTE access and TLB miss 2008-07-09 13:36:17 -04:00
dma-noncoherent.c powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency. 2009-05-27 16:33:59 +10:00
fault.c Move FAULT_FLAG_xyz into handle_mm_fault() callers 2009-06-21 13:08:22 -07:00
fsl_booke_mmu.c powerpc/mm: Tweak PTE bit combination definitions 2009-03-24 13:47:33 +11:00
gup.c powerpc: Use pr_devel() in arch/powerpc/mm/gup.c 2009-07-08 13:50:23 +10:00
hash_low_32.S powerpc/mm: Fix _PAGE_COHERENT support on classic ppc32 HW 2009-02-11 16:07:02 +11:00
hash_low_64.S powerpc: Free a PTE bit on ppc64 with 64K pages 2008-06-30 22:30:53 +10:00
hash_native_64.c powerpc: Add 2.06 tlbie mnemonics 2009-05-21 15:44:21 +10:00
hash_utils_64.c powerpc: Fix crash on CPU hotplug 2009-04-22 14:56:34 +10:00
highmem.c powerpc/mm: Make k(un)map_atomic out of line 2009-06-26 14:37:25 +10:00
hugetlbpage.c mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() 2009-07-27 12:10:38 -07:00
init_32.c powerpc: Minor cleanups of kernel virt address space definitions 2009-05-27 16:32:50 +10:00
init_64.c powerpc: Shield code specific to 64-bit server processors 2009-06-09 16:47:38 +10:00
Makefile powerpc/mm: Make k(un)map_atomic out of line 2009-06-26 14:37:25 +10:00
mem.c powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency. 2009-05-27 16:33:59 +10:00
mmap_64.c powerpc/mm: Rename arch/powerpc/kernel/mmap.c to mmap_64.c 2009-03-24 13:47:33 +11:00
mmu_context_hash32.c powerpc/mm: Split mmu_context handling 2008-12-21 14:21:15 +11:00
mmu_context_hash64.c powerpc/mm: Split mmu_context handling 2008-12-21 14:21:15 +11:00
mmu_context_nohash.c powerpc/mm: Fix SMP issue with MMU context handling code 2009-07-29 23:05:43 -05:00
mmu_decl.h Merge commit 'kumar/kumar-next' into next 2009-01-13 13:59:03 +11:00
numa.c powerpc: Set init_bootmem_done on NUMA platforms as well 2009-06-09 16:43:04 +10:00
pgtable_32.c powerpc: Minor cleanups of kernel virt address space definitions 2009-05-27 16:32:50 +10:00
pgtable_64.c powerpc: Wire up /proc/vmallocinfo to our ioremap() 2009-03-11 17:10:14 +11:00
pgtable.c powerpc: Use pr_devel() in do_dcache_icache_coherency() 2009-07-08 13:50:24 +10:00
ppc_mmu_32.c powerpc/mm: Tweak PTE bit combination definitions 2009-03-24 13:47:33 +11:00
slb_low.S [POWERPC] vmemmap fixes to use smaller pages 2008-05-15 20:49:25 +10:00
slb.c powerpc: Preload application text segment instead of TASK_UNMAPPED_BASE 2009-08-20 10:12:26 +10:00
slice.c powerpc: is_hugepage_only_range() must account for both 4kB and 64kB slices 2009-01-16 16:15:16 +11:00
stab.c powerpc: Change u64/s64 to a long long integer type 2009-01-13 14:47:59 +11:00
subpage-prot.c [POWERPC] Provide a way to protect 4k subpages when using 64k pages 2008-01-24 10:06:01 +11:00
tlb_hash32.c powerpc/mm: Add SMP support to no-hash TLB handling 2008-12-21 14:21:16 +11:00
tlb_hash64.c powerpc: Remove unnecessary semicolons 2009-07-08 13:50:21 +10:00
tlb_nohash_low.S powerpc: fix for long standing bug noticed by gcc 4.4.0 2009-04-23 08:52:16 -05:00
tlb_nohash.c powerpc/mm: Fix compile warning 2009-04-07 22:11:10 -05:00