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4348810a24
android_kernel_xiaomi_sm8450/arch/arm/mm
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Russell King 4348810a24 ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence 
Kernel space needs very little in the way of BTC maintanence as most
mappings which are created and destroyed are non-executable, and so
could never enter the instruction stream.

The case which does warrant BTC maintanence is when a module is loaded.
This creates a new executable mapping, but at that point the pages have
not been initialized with code and data, so at that point they contain
unpredictable information.  Invalidating the BTC at this stage serves
little useful purpose.

Before we execute module code, we call flush_icache_range(), which deals
with the BTC maintanence requirements.  This ensures that we have a BTC
maintanence operation before we execute code via the newly created
mapping.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-19 11:44:06 +01:00
..
abort-ev4.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
abort-ev4t.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
abort-ev5t.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
abort-ev5tj.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
abort-ev6.S ARM: v6k: select clear exclusive code seqences according to V6 variants 2011-02-02 21:23:28 +00:00
abort-ev7.S arm: mm: qsd8x50: Fix incorrect permission faults 2010-05-03 11:15:05 -07:00
abort-lv4t.S [ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores. 2006-09-28 20:15:46 +01:00
abort-macro.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
abort-nommu.S [ARM] 5227/1: Add the ENDPROC declarations to the .S files 2008-09-01 12:06:34 +01:00
alignment.c ARM: 6401/1: plug a race in the alignment trap handler 2010-09-23 15:17:04 +01:00
cache-fa.S ARM: 6466/1: implement flush_icache_all for the rest of the CPUs 2010-10-28 13:54:28 +01:00
cache-feroceon-l2.c ARM: fix cache-feroceon-l2 after stack based kmap_atomic() 2010-12-19 12:57:16 -05:00
cache-l2x0.c Merge branch 'misc' into devel 2011-03-16 23:35:25 +00:00
cache-tauros2.c ARM: Add Tauros2 L2 cache controller support 2009-11-27 15:43:21 -05:00
cache-v3.S ARM: 6466/1: implement flush_icache_all for the rest of the CPUs 2010-10-28 13:54:28 +01:00
cache-v4.S ARM: 6466/1: implement flush_icache_all for the rest of the CPUs 2010-10-28 13:54:28 +01:00
cache-v4wb.S Fix common misspellings 2011-03-31 11:26:23 -03:00
cache-v4wt.S Fix common misspellings 2011-03-31 11:26:23 -03:00
cache-v6.S ARM: 6941/1: cache: ensure MVA is cacheline aligned in flush_kern_dcache_area 2011-05-26 12:14:32 +01:00
cache-v7.S ARM: 6941/1: cache: ensure MVA is cacheline aligned in flush_kern_dcache_area 2011-05-26 12:14:32 +01:00
cache-xsc3l2.c ARM: fix cache-xsc3l2 after stack based kmap_atomic() 2010-12-19 12:57:08 -05:00
context.c Revert "ARM: 6944/1: mm: allow ASID 0 to be allocated to tasks" 2011-06-09 10:13:16 +01:00
copypage-fa.c ARM: Gemini: fix compiler error in copypage-fa.c 2010-04-27 12:45:10 +02:00
copypage-feroceon.c ARM: 6164/1: Add kto and kfrom to input operands list. 2010-06-08 19:42:18 +01:00
copypage-v3.c ARM: Pass VMA to copy_user_highpage() implementations 2009-10-05 15:17:45 +01:00
copypage-v4mc.c ARM: 6379/1: Assume new page cache pages have dirty D-cache 2010-09-19 12:17:43 +01:00
copypage-v4wb.c ARM: 6164/1: Add kto and kfrom to input operands list. 2010-06-08 19:42:18 +01:00
copypage-v4wt.c ARM: 6164/1: Add kto and kfrom to input operands list. 2010-06-08 19:42:18 +01:00
copypage-v6.c ARM: 6379/1: Assume new page cache pages have dirty D-cache 2010-09-19 12:17:43 +01:00
copypage-xsc3.c ARM: 6164/1: Add kto and kfrom to input operands list. 2010-06-08 19:42:18 +01:00
copypage-xscale.c ARM: 6379/1: Assume new page cache pages have dirty D-cache 2010-09-19 12:17:43 +01:00
dma-mapping.c Merge branches 'fixes', 'pgt-next' and 'versatile' into devel 2011-03-20 09:32:12 +00:00
extable.c [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
fault-armv.c ARM: pgtable: add pud-level code 2011-02-21 19:24:14 +00:00
fault.c ARM: pgtable: add pud-level code 2011-02-21 19:24:14 +00:00
fault.h [ARM] do_bad_area() always takes current and current->active_mm 2006-09-27 16:13:48 +01:00
flush.c Merge branches 'consolidate', 'ep93xx', 'fixes', 'misc', 'mmci', 'remove' and 'spear' into for-linus 2011-05-23 19:27:40 +01:00
highmem.c ARM: get rid of kmap_high_l1_vipt() 2010-12-19 12:56:46 -05:00
idmap.c ARM: pgtable: add pud-level code 2011-02-21 19:24:14 +00:00
init.c ARM: initrd: disable initrds outside of memory 2011-06-11 00:43:21 +01:00
iomap.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
ioremap.c Revert "ARM: relax ioremap prohibition (309caa9) for -final and -stable" 2010-12-24 09:49:52 +00:00
Kconfig Merge branch 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-03-17 19:08:06 -07:00
Makefile ARM: v6k: introduce CPU_V6K option 2011-02-02 21:23:26 +00:00
mm.h ARM: kill pmd_off() 2011-05-26 19:50:30 +01:00
mmap.c ARM: 6877/1: the ADDR_NO_RANDOMIZE personality flag should be honored with mmap() 2011-04-14 09:15:24 +01:00
mmu.c ARM: 6914/1: sparsemem: fix highmem detection when using SPARSEMEM 2011-05-26 10:23:25 +01:00
nommu.c ARM: Convert platform reservations to use LMB rather than bootmem 2010-07-27 08:48:23 +01:00
pabort-legacy.S ARM: 5727/1: Pass IFSR register to do_PrefetchAbort() 2009-10-02 22:34:32 +01:00
pabort-v6.S ARM: 5727/1: Pass IFSR register to do_PrefetchAbort() 2009-10-02 22:34:32 +01:00
pabort-v7.S ARM: 5727/1: Pass IFSR register to do_PrefetchAbort() 2009-10-02 22:34:32 +01:00
pgd.c Merge branches 'fixes', 'pgt-next' and 'versatile' into devel 2011-03-20 09:32:12 +00:00
proc-arm6_7.S ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
proc-arm7tdmi.S ARM: 6948/1: Fix .size directives for __arm{7,9}tdmi_proc_info 2011-06-06 10:56:10 +01:00
proc-arm9tdmi.S ARM: 6948/1: Fix .size directives for __arm{7,9}tdmi_proc_info 2011-06-06 10:56:10 +01:00
proc-arm720.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc-arm740.S ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
proc-arm920.S Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into fixes 2011-04-13 23:32:13 +01:00
proc-arm922.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc-arm925.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc-arm926.S ARM: Make consolidated PM sleep code depend on PM_SLEEP 2011-04-02 10:08:55 +01:00
proc-arm940.S ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
proc-arm946.S ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
proc-arm1020.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc-arm1020e.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc-arm1022.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc-arm1026.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc-fa526.S ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
proc-feroceon.S ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
proc-macros.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc-mohawk.S ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
proc-sa110.S ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
proc-sa1100.S ARM: Make consolidated PM sleep code depend on PM_SLEEP 2011-04-02 10:08:55 +01:00
proc-syms.c ARM: add size argument to __cpuc_flush_dcache_page 2009-12-14 14:53:22 +00:00
proc-v6.S ARM: 6942/1: mm: make TTBR1 always point to swapper_pg_dir on ARMv6/7 2011-05-26 12:14:32 +01:00
proc-v7.S Revert "ARM: 6943/1: mm: use TTBR1 instead of reserved context ID" 2011-06-09 10:13:04 +01:00
proc-xsc3.S ARM: Make consolidated PM sleep code depend on PM_SLEEP 2011-04-02 10:08:55 +01:00
proc-xscale.S ARM: Fix .size directive for xscale_dma_a0_map_area 2011-04-28 17:56:31 +08:00
tlb-fa.S ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence 2011-07-19 11:44:06 +01:00
tlb-v3.S kbuild: arm - use generic asm-offsets.h support 2005-09-09 21:08:59 +02:00
tlb-v4.S kbuild: arm - use generic asm-offsets.h support 2005-09-09 21:08:59 +02:00
tlb-v4wb.S kbuild: arm - use generic asm-offsets.h support 2005-09-09 21:08:59 +02:00
tlb-v4wbi.S kbuild: arm - use generic asm-offsets.h support 2005-09-09 21:08:59 +02:00
tlb-v6.S ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence 2011-07-19 11:44:06 +01:00
tlb-v7.S ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence 2011-07-19 11:44:06 +01:00
vmregion.c ARM: DMA: top-down allocation in DMA coherent region 2011-02-23 17:24:11 +00:00
vmregion.h ARM: DMA coherent allocator: align remapped addresses 2010-07-27 10:43:48 +01:00