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a4780adeef
linux/arch/arm
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André Hentschel a4780adeef ARM: 7735/2: Preserve the user r/w register TPIDRURW on context switch and fork 
Since commit 6a1c53124a the user writeable TLS register was zeroed to
prevent it from being used as a covert channel between two tasks.

There are more and more applications coming to Windows RT,
Wine could support them, but mostly they expect to have
the thread environment block (TEB) in TPIDRURW.

This patch preserves that register per thread instead of clearing it.
Unlike the TPIDRURO, which is already switched, the TPIDRURW
can be updated from userspace so needs careful treatment in the case that we
modify TPIDRURW and call fork(). To avoid this we must always read
TPIDRURW in copy_thread.

Signed-off-by: André Hentschel <nerv@dawncrow.de>
Signed-off-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>
2013-06-24 15:21:59 +01:00
..
boot ARM: 7751/1: zImage: don't overwrite ourself with a page table 2013-06-17 09:27:05 +01:00
common ARM: arm-soc: late cleanups 2013-05-07 11:22:14 -07:00
configs Omap fixes for things that were discovered during the merge window: 2013-05-09 13:13:57 -07:00
crypto
include ARM: 7735/2: Preserve the user r/w register TPIDRURW on context switch and fork 2013-06-24 15:21:59 +01:00
kernel ARM: 7735/2: Preserve the user r/w register TPIDRURW on context switch and fork 2013-06-24 15:21:59 +01:00
kvm Merge tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2013-05-05 14:47:31 -07:00
lib ARM: 7685/1: delay: use private ticks_per_jiffy field for timer-based delay ops 2013-04-03 16:45:50 +01:00
mach-at91 ARM: arm-soc: late cleanups 2013-05-07 11:22:14 -07:00
mach-bcm ARM: platform specific firmware interfaces for 3.10 2013-05-04 12:33:36 -07:00
mach-bcm2835
mach-clps711x
mach-cns3xxx ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00
mach-davinci ARM: arm-soc device tree changes, part 2 2013-05-07 11:06:17 -07:00
mach-dove arm: mach-dove: convert to use mvebu-mbus driver 2013-04-15 14:06:27 +00:00
mach-ebsa110 ARM: 7728/1: mm: Use phys_addr_t properly for ioremap functions 2013-05-23 00:09:44 +01:00
mach-ep93xx
mach-exynos ARM: EXYNOS5: Fix kernel dump in AFTR idle mode 2013-05-09 13:22:22 -07:00
mach-footbridge
mach-gemini ARM: arm-soc cleanup for 3.10 2013-05-02 09:03:55 -07:00
mach-highbank ARM: arm-soc: late cleanups 2013-05-07 11:22:14 -07:00
mach-imx ARM: 7728/1: mm: Use phys_addr_t properly for ioremap functions 2013-05-23 00:09:44 +01:00
mach-integrator ARM: arm-soc: late cleanups 2013-05-07 11:22:14 -07:00
mach-iop13xx ARM: 7728/1: mm: Use phys_addr_t properly for ioremap functions 2013-05-23 00:09:44 +01:00
mach-iop32x
mach-iop33x
mach-ixp4xx ARM: 7728/1: mm: Use phys_addr_t properly for ioremap functions 2013-05-23 00:09:44 +01:00
mach-kirkwood ARM: arm-soc platform updates for 3.10, part 3 2013-05-07 11:02:18 -07:00
mach-ks8695 Merge commit '6bb27d7349db51b50c40534710fe164ca0d58902' into omap-timer-for-v3.10 2013-04-01 13:47:29 -05:00
mach-lpc32xx
mach-mmp ARM: arm-soc board specific changes for 3.10, part 1 2013-05-04 12:34:30 -07:00
mach-msm ARM: 7728/1: mm: Use phys_addr_t properly for ioremap functions 2013-05-23 00:09:44 +01:00
mach-mv78xx0 arm: mach-mv78xx0: convert to use the mvebu-mbus driver 2013-04-15 14:06:39 +00:00
mach-mvebu ARM: arm-soc: late cleanups 2013-05-07 11:22:14 -07:00
mach-mxs ARM: arm-soc device tree changes, part 2 2013-05-07 11:06:17 -07:00
mach-netx
mach-nomadik clocksource: nomadik-mtu: fix up clocksource/timer 2013-04-26 17:10:46 -07:00
mach-omap1 ARM: OMAP1: DMA: fix error handling in omap1_system_dma_init() 2013-05-08 16:48:02 -07:00
mach-omap2 ARM: 7758/1: introduce config HAS_BANDGAP 2013-06-17 09:27:08 +01:00
mach-orion5x ARM: arm-soc platform updates for 3.10, part 3 2013-05-07 11:02:18 -07:00
mach-picoxcell
mach-prima2 Merge branch 'late/fixes' into fixes 2013-05-09 13:05:15 -07:00
mach-pxa - Lots of cleanups from Artem, including deletion of some obsolete drivers 2013-05-09 10:15:46 -07:00
mach-realview Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-05-03 09:13:19 -07:00
mach-rpc
mach-s3c24xx ARM: arm-soc driver changes for 3.10 2013-05-04 12:31:18 -07:00
mach-s3c64xx For 3.10 we have a few new MFD drivers for: 2013-05-05 17:36:20 -07:00
mach-s5p64x0 Merge branch 'samsung/exynos-multiplatform' into next/drivers 2013-04-19 16:50:56 +02:00
mach-s5pc100 ARM: arm-soc driver changes for 3.10 2013-05-04 12:31:18 -07:00
mach-s5pv210 ARM: arm-soc driver changes for 3.10 2013-05-04 12:31:18 -07:00
mach-sa1100 cpufreq: sa11x0: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:24 +02:00
mach-shark arm: Use generic idle loop 2013-04-08 17:39:24 +02:00
mach-shmobile ARM: arm-soc: late cleanups 2013-05-07 11:22:14 -07:00
mach-socfpga Merge branch 'gic/cleanup' into next/soc 2013-04-28 15:06:56 -07:00
mach-spear Merge branch 'late/fixes' into fixes 2013-05-09 13:05:15 -07:00
mach-sunxi ARM: sunxi: Rework the restart code 2013-04-08 21:43:08 +02:00
mach-tegra Merge branch 'late/fixes' into fixes 2013-05-09 13:05:15 -07:00
mach-u300 ARM: u300: fix ages old copy/paste bug 2013-04-26 17:07:38 -07:00
mach-ux500 ARM: ux500: Rid ignored return value of regulator_enable() compiler warning 2013-05-09 13:10:10 -07:00
mach-versatile ARM: versatile: use OF init for sp804 timer 2013-04-11 15:11:21 -05:00
mach-vexpress Moves xenvm to mach-virt. 2013-05-07 15:11:43 -07:00
mach-virt Moves xenvm to mach-virt. 2013-05-07 15:11:43 -07:00
mach-vt8500 irqchip: vt8500: Convert arch-vt8500 to new irqchip infrastructure 2013-04-12 22:43:24 -07:00
mach-w90x900 arm: Use generic idle loop 2013-04-08 17:39:24 +02:00
mach-zynq ARM: arm-soc platform updates for 3.10, part 3 2013-05-07 11:02:18 -07:00
mm ARM: 7746/1: mm: lazy cache flushing on non-mapped pages 2013-06-05 23:37:32 +01:00
net
nwfpe
oprofile
plat-iop
plat-omap ARM: arm-soc device tree changes, part 2 2013-05-07 11:06:17 -07:00
plat-orion Removal of GENERIC_GPIO for v3.10 2013-05-09 09:59:16 -07:00
plat-pxa
plat-samsung ARM: late Exynos multiplatform changes 2013-05-07 11:28:42 -07:00
plat-versatile irqchip: gic: Perform the gic_secondary_init() call via CPU notifier 2013-03-26 16:12:02 +00:00
tools ARM: Update mach-types 2013-03-22 17:24:51 +00:00
vfp
xen xen/arm: remove duplicated include from enlighten.c 2013-04-27 14:57:17 +00:00
Kconfig ARM: 7758/1: introduce config HAS_BANDGAP 2013-06-17 09:27:08 +01:00
Kconfig-nommu
Kconfig.debug ARM: arm-soc platform updates for 3.10, part 3 2013-05-07 11:02:18 -07:00
Makefile ARM: arm-soc multiplatform updates for 3.10 2013-05-02 09:38:16 -07:00