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Jonathan Austin 078c04545b ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE 
Currently when ThumbEE is not enabled (!CONFIG_ARM_THUMBEE) the ThumbEE
register states are not saved/restored at context switch. The default state
of the ThumbEE Ctrl register (TEECR) allows userspace accesses to the
ThumbEE Base Handler register (TEEHBR). This can cause unexpected behaviour
when people use ThumbEE on !CONFIG_ARM_THUMBEE kernels, as well as allowing
covert communication - eg between userspace tasks running inside chroot
jails.

This patch sets up TEECR in order to prevent user-space access to TEEHBR
when !CONFIG_ARM_THUMBEE. In this case, tasks are sent SIGILL if they try to
access TEEHBR.

Cc: stable@vger.kernel.org
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 		2012-04-15 22:00:31 +01:00
..
Kconfig ARM: 7381/1: nommu: fix typo in mm/Kconfig 2012-04-13 14:05:41 +01:00
Makefile
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abort-ev4.S
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abort-ev4t.S
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abort-ev5t.S
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abort-ev5tj.S
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abort-ev6.S
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abort-ev7.S
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abort-lv4t.S
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abort-macro.S
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abort-nommu.S
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alignment.c Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
cache-fa.S
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cache-feroceon-l2.c ARM: move CP15 definitions to separate header file 2012-03-28 18:30:01 +01:00
cache-l2x0.c ARM: cache-l2x0.c: consistently use u32 2012-01-20 10:50:20 +00:00
cache-tauros2.c ARM: move CP15 definitions to separate header file 2012-03-28 18:30:01 +01:00
cache-v3.S
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cache-v4.S
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cache-v4wb.S
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cache-v4wt.S
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cache-v6.S
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cache-v7.S ARM: 7325/1: fix v7 boot with lockdep enabled 2012-02-15 21:09:52 +00:00
cache-xsc3l2.c ARM: move CP15 definitions to separate header file 2012-03-28 18:30:01 +01:00
context.c
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copypage-fa.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-feroceon.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-v3.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-v4mc.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
copypage-v4wb.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-v4wt.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-v6.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
copypage-xsc3.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-xscale.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
dma-mapping.c ARM: add dma coherent region reporting via procfs 2012-01-23 10:23:57 +00:00
extable.c
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fault-armv.c
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fault.c ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented 2012-04-10 09:27:42 +01:00
fault.h
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flush.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
fsr-2level.c
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fsr-3level.c
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highmem.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
idmap.c Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
init.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
iomap.c arm/PCI: remove arch pci_flags definition 2012-02-23 20:18:56 -07:00
ioremap.c ARM: cleanups of io includes 2012-03-29 18:02:10 -07:00
mm.h ARM: pgtable: get rid of TOP_PTE() 2012-01-26 20:07:59 +00:00
mmap.c
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mmu.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
nommu.c ARM: 7383/1: nommu: populate vectors page from paging_init 2012-04-13 14:05:42 +01:00
pabort-legacy.S
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pabort-v6.S
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pabort-v7.S
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pgd.c ARM: move CP15 definitions to separate header file 2012-03-28 18:30:01 +01:00
proc-arm6_7.S
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proc-arm7tdmi.S
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proc-arm9tdmi.S
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proc-arm720.S
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proc-arm740.S
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proc-arm920.S
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proc-arm922.S
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proc-arm925.S
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proc-arm926.S
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proc-arm940.S
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proc-arm946.S
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proc-arm1020.S
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proc-arm1020e.S
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proc-arm1022.S
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proc-arm1026.S
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proc-fa526.S Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
proc-feroceon.S
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proc-macros.S
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proc-mohawk.S
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proc-sa110.S
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proc-sa1100.S
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proc-syms.c
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proc-v6.S
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proc-v7-2level.S
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proc-v7-3level.S
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proc-v7.S ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE 2012-04-15 22:00:31 +01:00
proc-xsc3.S
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proc-xscale.S
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tlb-fa.S
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tlb-v3.S
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tlb-v4.S
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tlb-v4wb.S
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tlb-v4wbi.S
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tlb-v6.S
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tlb-v7.S
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vmregion.c ARM: add dma coherent region reporting via procfs 2012-01-23 10:23:57 +00:00
vmregion.h ARM: add dma coherent region reporting via procfs 2012-01-23 10:23:57 +00:00