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8903826d0c
linux/arch/arm
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Will Deacon 8903826d0c ARM: idmap: populate identity map pgd at init time using .init.text 
When disabling and re-enabling the MMU, it is necessary to take out an
identity mapping for the code that manipulates the SCTLR in order to
avoid it disappearing from under our feet. This is useful when soft
rebooting and returning from CPU suspend.

This patch allocates a set of page tables during boot and populates them
with an identity mapping for the .idmap.text section. This means that
users of the identity map do not need to manage their own pgd and can
instead annotate their functions with __idmap or, in the case of assembly
code, place them in the correct section.

Acked-by: Dave Martin <dave.martin@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-12-06 14:04:14 +00:00
..
boot arm/dt: Fix ventana SDHCI power-gpios 2011-11-09 11:24:37 -08:00
common ARM: VIC: remove non MULTI_IRQ_HANDLER support 2011-11-15 18:14:04 +00:00
configs ARM: EXYNOS: Add ARCH_EXYNOS and reorganize arch/arm/mach-exynos 2011-11-06 13:54:56 +09:00
include/asm ARM: idmap: populate identity map pgd at init time using .init.text 2011-12-06 14:04:14 +00:00
kernel ARM: idmap: populate identity map pgd at init time using .init.text 2011-12-06 14:04:14 +00:00
lib Merge branch 'misc' into for-linus 2011-10-25 08:19:59 +01:00
mach-at91 ARM: at91: Fix USBA gadget registration 2011-11-09 23:02:12 +08:00
mach-bcmring arm: fix implicit use of sched.h in bcmring/dma.c 2011-10-31 19:30:47 -04:00
mach-clps711x Merge branch 'restart-cleanup' into restart 2011-11-21 09:49:47 +00:00
mach-cns3xxx ARM: cns3xxx: convert to CONFIG_MULTI_IRQ_HANDLER 2011-11-15 18:14:02 +00:00
mach-davinci Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2011-11-07 10:13:52 -08:00
mach-dove Merge branch 'depends/rmk/memory_h' into next/cleanup2 2011-11-01 13:47:27 +01:00
mach-ebsa110 ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-ep93xx Merge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable 2011-11-21 21:56:56 +00:00
mach-exynos ARM: exynos4: Fix build error 2011-12-02 10:30:03 +00:00
mach-footbridge ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-gemini Merge branch 'depends/rmk/memory_h' into next/fixes 2011-11-01 00:25:01 +01:00
mach-h720x Merge branch 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm 2011-10-28 12:02:27 -07:00
mach-highbank ARM: highbank: convert to CONFIG_MULTI_IRQ_HANDLER 2011-11-15 18:13:59 +00:00
mach-imx arm/imx: fix imx6q mmc error when mounting rootfs 2011-11-11 16:53:35 +01:00
mach-integrator Merge branch 'depends/rmk/memory_h' into next/cleanup2 2011-11-01 13:47:27 +01:00
mach-iop13xx arm: Add export.h to ARM specific files as required. 2011-10-31 19:30:50 -04:00
mach-iop32x Merge branch 'restart-cleanup' into restart 2011-11-21 09:49:47 +00:00
mach-iop33x ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-ixp4xx ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-ixp23xx Merge branch 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm 2011-10-28 12:02:27 -07:00
mach-ixp2000 ARM: restart: remove local_irq_disable() from within arch_reset() 2011-11-17 17:09:30 +00:00
mach-kirkwood Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2011-11-07 10:13:52 -08:00
mach-ks8695 ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-l7200/include/mach ARM: add an extra temp register to the low level debugging addruart macro 2011-09-26 10:11:25 -04:00
mach-lpc32xx ARM: restart: remove local_irq_disable() from within arch_reset() 2011-11-17 17:09:30 +00:00
mach-mmp ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-msm ARM: GIC: Make MULTI_IRQ_HANDLER mandatory 2011-11-15 18:14:02 +00:00
mach-mv78xx0 Merge branch 'depends/rmk/memory_h' into next/fixes 2011-11-01 00:25:01 +01:00
mach-mx5 Merge branch 'imx-fixes-for-arnd' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes 2011-11-11 08:53:46 -08:00
mach-mxs Merge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable 2011-11-21 21:56:56 +00:00
mach-netx ARM: netx: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:03 +00:00
mach-nomadik ARM: nomadik: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:03 +00:00
mach-omap1 ARM: 7159/1: OMAP: Introduce local common.h files 2011-11-17 17:09:30 +00:00
mach-omap2 ARM: 7189/1: OMAP3: Fix build break in cpuidle34xx.c because of irq function 2011-12-05 23:19:50 +00:00
mach-orion5x Merge git://git.infradead.org/mtd-2.6 2011-11-07 09:11:16 -08:00
mach-picoxcell ARM: picoxcell: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:04 +00:00
mach-pnx4008 ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-prima2 Merge branch 'next/pm' of git://git.linaro.org/people/arnd/arm-soc 2011-11-01 20:22:01 -07:00
mach-pxa Merge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable 2011-11-21 21:56:56 +00:00
mach-realview ARM: RealView: convert to CONFIG_MULTI_IRQ_HANDLER 2011-11-15 18:13:59 +00:00
mach-rpc ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-s3c64xx Merge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable 2011-11-21 21:56:56 +00:00
mach-s3c2410 ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-s3c2412 Merge branch 'next/cleanup3' of git://git.linaro.org/people/arnd/arm-soc 2011-11-05 18:18:05 -07:00
mach-s3c2416 Merge branch 'next/devel2' of git://git.linaro.org/people/arnd/arm-soc 2011-11-05 18:21:21 -07:00
mach-s3c2440 Merge branch 'next/cleanup3' of git://git.linaro.org/people/arnd/arm-soc 2011-11-05 18:18:05 -07:00
mach-s3c2443 Merge branch 'next/devel2' of git://git.linaro.org/people/arnd/arm-soc 2011-11-05 18:21:21 -07:00
mach-s5p64x0 ARM: samsung: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:04 +00:00
mach-s5pc100 ARM: samsung: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:04 +00:00
mach-s5pv210 ARM: samsung: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:04 +00:00
mach-sa1100 ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
mach-shark ARM: restart: remove local_irq_disable() from within arch_reset() 2011-11-17 17:09:30 +00:00
mach-shmobile Merge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable 2011-11-21 21:56:56 +00:00
mach-spear3xx ARM: spear: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:03 +00:00
mach-spear6xx ARM: spear: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:03 +00:00
mach-tcc8k Merge branch 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm 2011-10-28 12:02:27 -07:00
mach-tegra ARM: GIC: Make MULTI_IRQ_HANDLER mandatory 2011-11-15 18:14:02 +00:00
mach-u300 Merge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable 2011-11-21 21:56:56 +00:00
mach-ux500 ARM: GIC: Make MULTI_IRQ_HANDLER mandatory 2011-11-15 18:14:02 +00:00
mach-versatile ARM: versatile: convert to MULTI_IRQ_HANDLER 2011-11-15 18:14:04 +00:00
mach-vexpress ARM: VExpress: convert to CONFIG_MULTI_IRQ_HANDLER 2011-11-15 18:14:00 +00:00
mach-vt8500 Merge branch 'depends/rmk/memory_h' into next/fixes 2011-11-01 00:25:01 +01:00
mach-w90x900 Merge branch 'restart-cleanup' into restart 2011-11-21 09:49:47 +00:00
mach-zynq ARM: zynq: convert to CONFIG_MULTI_IRQ_HANDLER 2011-11-15 18:14:02 +00:00
mm ARM: idmap: populate identity map pgd at init time using .init.text 2011-12-06 14:04:14 +00:00
nwfpe
oprofile
plat-iop arm: Add export.h to ARM specific files as required. 2011-10-31 19:30:50 -04:00
plat-mxc Merge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable 2011-11-21 21:56:56 +00:00
plat-nomadik Merge branch 'next/timer' of git://git.linaro.org/people/arnd/arm-soc 2011-11-01 20:18:05 -07:00
plat-omap Merge branch 'irqchip-consolidation' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable 2011-11-21 21:56:56 +00:00
plat-orion ARM: 7063/1: Orion: gpio: add missing include of linux/types.h 2011-08-24 08:29:20 +01:00
plat-pxa Merge git://git.infradead.org/mtd-2.6 2011-11-07 09:11:16 -08:00
plat-s3c24xx Merge branch 'next/devel2' of git://git.linaro.org/people/arnd/arm-soc 2011-11-05 18:21:21 -07:00
plat-s5p ARM: gic: allow GIC to support non-banked setups 2011-11-15 18:13:03 +00:00
plat-samsung arm: Add export.h to recently added files for EXPORT_SYMBOL 2011-11-07 10:28:58 -08:00
plat-spear ARM: restart: only perform setup for restart when soft-restarting 2011-11-21 09:47:48 +00:00
plat-tcc ARM: plat-tcc: remove mach/memory.h 2011-10-13 12:49:42 -04:00
plat-versatile ARM: versatile: convert logical CPU numbers to physical numbers 2011-10-17 10:01:11 +01:00
tools ARM: Add a few machine types to mach-types 2011-10-17 13:28:46 +01:00
vfp arm: remove several unnecessary module.h include instances 2011-10-31 19:30:48 -04:00
Kconfig ARM: VIC: remove non MULTI_IRQ_HANDLER support 2011-11-15 18:14:04 +00:00
Kconfig-nommu
Kconfig.debug Merge branch 'next/soc' of git://git.linaro.org/people/arnd/arm-soc 2011-11-01 21:08:03 -07:00
Makefile ARM: EXYNOS: Add ARCH_EXYNOS and reorganize arch/arm/mach-exynos 2011-11-06 13:54:56 +09:00