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* [ARM] 4383/1: iop: fix usage of '__init' and 'inline' in iop filesDan Williams2007-05-16
| | | | | | | | | | | | | | | WARNING: arch/arm/mach-iop13xx/built-in.o - Section mismatch: reference to .init.text:iop13xx_pcie_map_irq from .text between 'iop13xx_pci_setup' (at offset 0x7fc) and 'iop13xx_map_pci_memory' While fixing this warning I also recalled Adrian Bunk's recommendation to not use inline in .c files, as 'iop13xx_map_pci_memory' is needlessly inlined. Removing 'inline' uncovered some dead code so that is cleaned up as well. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 4382/1: iop13xx: fix msi supportDan Williams2007-05-16
| | | | | | | | | | | updates iop13xx msi support for a msi api change in 2.6.22 rev7: * update for Michael Ellerman's "MSI: arch must connect the irq and the msi_desc" patch Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Remove Integrator/CP SMP platform supportRussell King2007-05-16
| | | | | | | The Integrator/CP SMP platform support was never fully merged, and now it's causing build breakage. Remove it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 4376/1: Selects GENERIC_GPIO for ARCH_IXP4XX in KconfigMilan Svoboda2007-05-16
| | | | | | | | | | | Selects GENERIC_GPIO for ARCH_IXP4XX in Kconfig. IXP4XX has generic GPIO support; however, ARCH_IXP4XX Kconfig entry currently does not select GENERIC_GPIO like other arch entries. Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 4375/1: sharpsl_pm: Fix compile warningsRichard Purdie2007-05-16
| | | | | | | | Fix compile warnings from sharpsl_pm.c. Attribute registration failure doesn't stop the driver working so just warn about it. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* arm: walk_stacktrace() needs to be exportedAl Viro2007-05-15
| | | | | | | oprofile depends on having it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'fixes' into develRussell King2007-05-12
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| * Merge branch 'omap-fixes' into fixesRussell King2007-05-12
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| | * ARM: OMAP: Fix section mismatch warningTony Lindgren2007-05-10
| | | | | | | | | | | | | | | | | | Fix section mismatch warning Signed-off-by: Tony Lindgren <tony@atomide.com>
| | * ARM: OMAP: 24xx pinmux updatesKyungmin Park2007-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add some OMAP 24xx pin mux declarations to support: - TUSB 6010 EVM (on H4) - All three full speed USB ports - GPIOs used with USB0 on Apollon and H4 For OMAP2, issue MUX_WARNINGS and debug messages correctly; and make the message look more like the OMAP1 message. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
| | * ARM: OMAP: Remove old PM_SUSPEND_DISKTony Lindgren2007-05-10
| | | | | | | | | | | | | | | | | | | | | Remove old PM_SUSPEND_DISK. Also some minor cosmetic clean-up. Signed-off-by: Tony Lindgren <tony@atomide.com>
| | * ARM: OMAP: Fix warning in dma.cTony Lindgren2007-05-10
| | | | | | | | | | | | | | | | | | Fix warning: 'offset' might be uninitialized Signed-off-by: Tony Lindgren <tony@atomide.com>
| * | [ARM] export symbol csum_partial_copy_from_userFrederik Deweerdt2007-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've got the following linking error when building 2.6.21-mm2 on ARM: ERROR: "csum_partial_copy_from_user" [net/rxrpc/af-rxrpc.ko] undefined! Linking fails because "csum_partial_copy_from_user" is not exported to modules. This patch adds it to the list of exported symbols. Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] stacktrace fixAndrew Morton2007-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ab1b6f03a10ba1f5638188ab06bf46e33ac3a160 said - remove the unused task argument to save_stack_trace, it's always current then broke arm: arch/arm/kernel/stacktrace.c:56: error: conflicting types for 'save_stack_trace' include/linux/stacktrace.h:11: error: previous declaration of 'save_stack_trace' was here arch/arm/kernel/stacktrace.c:56: error: conflicting types for 'save_stack_trace' include/linux/stacktrace.h:11: error: previous declaration of 'save_stack_trace' was here Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 4368/1: S3C24xx: build fixArnaud Patard2007-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trying to build current git tree fails. The failure is due to commit 25ff0a653067eec56efc730dbed664d5cc77e9f3. The patch title say it's for OMAP board while it's applied on S3C2410 Kconfig entry. Moreover, the OMAP entry is already selecting GENERIC_TIME. This patch reverts the offending commit. Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 4364/1: AT91: LEDS on AT91SAM9261-EKAndrew Victor2007-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Attached you can find a patch needed to make the LEDS for 'CPU-Idle' and 'Timer' work on the AT91SAM9261-EK board. The kernel configuration options are already there, but the implementation is not available. Signed-off-by: Remy Bohmer <l.pinguin@gmail.com> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] EBSA110: fix build errors caused by missing "const"Russell King2007-05-11
| |/ | | | | | | | | | | | | | | | | arch/arm/mach-ebsa110/io.c:106: error: conflicting types for 'readsw' arch/arm/mach-ebsa110/io.c:116: error: conflicting types for 'readsl' arch/arm/mach-ebsa110/io.c:161: error: conflicting types for 'writesw' arch/arm/mach-ebsa110/io.c:171: error: conflicting types for 'writesl' Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] Ensure machine class menu is sorted alphabeticallyRussell King2007-05-12
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4333/2: KS8695: Micrel Development boardAndrew Victor2007-05-11
| | | | | | | | | | | | | | | | Board support and default configuration file for the Micrel/Kendin KS8695 Development board. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4331/3: Support for Micrel/Kendin KS8695 processorAndrew Victor2007-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add core support for the Kendin/Micrel KS8695 processor family. It is an ARM922-T based SoC with integrated USART, 4-port Ethernet Switch, WAN Ethernet port, and optional PCI Host bridge, etc. http://www.micrel.com/page.do?page=product-info/sys_on_chip.jsp This patch is based on earlier patches from Lennert Buytenhek, Ben Dooks and Greg Ungerer posted to the arm-linux-kernel mailing list in March 2006; and Micrel's 2.6.9 port. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4371/1: AT91: Support for Atmel AT91SAM9RL-EK development boardAndrew Victor2007-05-11
| | | | | | | | | | | | | | | | Add support for the Atmel AT91SAM9RL-EK development board. Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4372/1: Define byte sizes in asm-arm/sizes.hAndrew Victor2007-05-11
| | | | | | | | | | | | | | | | | | | | Define SZ_512, SZ_256 and SZ_16 in asm-arm/sizes.h. Remove the definitions from the at91*_devices.c files. (Dependent on ARM patch #4370/2) Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4370/3: AT91: Support for Atmel AT91SAM9RL processors.Andrew Victor2007-05-11
| | | | | | | | | | | | | | | | | | | | Add support for Atmel's new AT91SAM9RL range of processors. Includes similar peripherals as other AT91SAM9 processors, but with a High-speed USB controller and various sizes of internal SRAM. Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] Update mach-typesRussell King2007-05-11
| | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] iop13xx: msi supportDaniel Wolstenholme2007-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable devices to signal interrupts via PCI memory cycles. rev6: * fix enable/disable typo, Michael Ellerman rev5: * fix up ack, enable, and disable for iop13xx_msi_chip rev4: * move smp compile fix to separate patch * use dynamic_irq_init in create_irq() * hookup mask/unmask routines in iop13xx_msi_chip rev3: * change msi.c to use linux/smp.h instead of asm/smp.h * call dynamic_irq_cleanup at destroy_irq time rev2: * destroy_irq did not take the full 128 bits of msi_irq_in_use into account * added missing '&' for calls to test_and_set_bit and clear_bit [ebiederm@xmission.com: review comments/suggestions] [dan.j.williams@intel.com: cleanups/forward port to 2.6-git] Signed-off-by: Daniel Wolstenholme <daniel.e.wolstenholme@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] Spinlock initializer cleanupThomas Gleixner2007-05-11
| | | | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] remove useless config option GENERIC_BUST_SPINLOCKRobert P. J. Day2007-05-11
| | | | | | | | | | | | | | | | | | Remove the apparently useless config option GENERIC_BUST_SPINLOCK, since nothing in the source tree refers to it. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4303/3: base kernel support for TI DaVinciKevin Hilman2007-05-11
| | | | | | | | | | | | | | | | | | | | | | Add base kernel support for the TI DaVinci platform. This patch only includes interrupts, timers, CPU identification, serial support and basic power and sleep controller init. More drivers to come. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4359/3: H1940: Add bluetooth supportArnaud Patard2007-05-11
| | | | | | | | | | | | | | | | | | | | This patch adds a small driver responsible for configuring the UART used for the bluetooth chip and for enabling the bluetooth chipset. Additionnaly, can trigger a led if the H1940 led driver is enabled. Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4365/1: Add AC97 clock to s3c2443 machineGraeme Gregory2007-05-11
| | | | | | | | | | | | | | | | | | This adds the ac97 clock to the s3c2443 machine files. It seems to have been simply missed out previously. Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] 4362/1: trizeps4 updateJürgen Schindele2007-05-11
| | | | | | | | | | | | | | | | | | | | This update for trizeps4 SoM contains: - support for new TFT on more recent ConXS evalboard - correct partition of flash device - update of "trizeps4_defconfig" Signed-off-by: Jrgen Schindele (linux@schindele.name) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] ecard: add ecardm_iomap() / ecardm_iounmap()Russell King2007-05-11
| | | | | | | | | | | | | | Add devres ecardm_iomap() and ecardm_iounmap() for Acorn expansion cards. Convert all expansion card drivers to use them. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [ARM] ecard: add helper function for setting ecard irq opsRussell King2007-05-11
|/ | | | | | | | | | | | | | | Rather than having every driver fiddle about setting its private IRQ operations and data, provide a helper function to contain this functionality in one place. Arrange to remove the driver-private IRQ operations and data when the device is removed from the driver, and remove the driver private code to do this. This fixes potential problems caused by drivers forgetting to remove these hooks. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2007-05-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (28 commits) ARM: OMAP: Fix GCC-reported compile time bug ARM: OMAP: restore CONFIG_GENERIC_TIME ARM: OMAP: partial LED fixes ARM: OMAP: add SoSSI clock (call propagate_rate for childrens) ARM: OMAP: FB sync with N800 tree (support for dynamic SRAM allocations) ARM: OMAP: Sync framebuffer headers with N800 tree ARM: OMAP: Mostly cosmetic to sync up with linux-omap tree ARM: OMAP: Fix gpmc header ARM: OMAP: Add mailbox support for IVA [ARM] armv7: add Makefile and Kconfig entries [ARM] armv7: add support for asid-tagged VIVT I-cache [ARM] armv7: add dedicated ARMv7 barrier instructions [ARM] armv7: Add ARMv7 cacheid macros [ARM] armv7: add support for ARMv7 cores. [ARM] Fix ARM branch relocation range [ARM] 4363/1: AT91: Remove legacy PIO definitions [ARM] 4361/1: AT91: Build error ARM: OMAP: Sync core code with linux-omap ARM: OMAP: Sync headers with linux-omap ARM: OMAP: h4 must have blinky leds!! ...
| *---. Merge branches 'armv7', 'at91', 'misc' and 'omap' into develRussell King2007-05-09
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| | | | * ARM: OMAP: Fix GCC-reported compile time bugDavid Brownell2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix GCC-reported compile time bug which prevents booting when the framebuffer code is disabled. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: restore CONFIG_GENERIC_TIMEDavid Brownell2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Somehow this got lost in a merge ... Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: partial LED fixesDavid Brownell2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Partial fix for CONFIG_LEDS breakage ... at least allow platforms using the debug-leds support (H4 for now) to build with the generic LED support, and default the LED that would be the timer LED to trigger using the "heartbeat" (timer driven, rate depends on load). Right now only H2 and P2 seem to have working LED support; this at least makes H4 less broken. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: add SoSSI clock (call propagate_rate for childrens)Imre Deak2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clocks with the follow parent rate mode were not updating their children at propagate rate time. Signed-off-by: Imre Deak <imre.deak@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: FB sync with N800 tree (support for dynamic SRAM allocations)Imre Deak2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - in addition to fixed FB regions - as passed by the bootloader - allow dynamic allocations - do some more checking against overlapping / reserved regions - move the FB specific parts out from sram.c to fb.c Signed-off-by: Imre Deak <imre.deak@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: Mostly cosmetic to sync up with linux-omap treeTony Lindgren2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mostly cosmetic to sync up with linux-omap tree Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: Add mailbox support for IVAHiroshi DOYU2007-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a generic mailbox interface for for DSP and IVA (Image Video Accelerator). This patch itself doesn't contain any IVA driver. Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: Sync core code with linux-omapTony Lindgren2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch syncs omap specific core code with linux-omap. Most of the changes are needed to fix bitrot caused by driver updates in linux-omap tree. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: h4 must have blinky leds!!David Brownell2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds generic support for the "debug board" LEDs used by most of TI's OMAP reference boards, and board-specific support for the H4. It's derived from the not-as-generic stuff used by OMAP1 H2/H3/P2. Those should be able to switch easily to this version, and clean up some of the omap1-specific code. In addition to H4 support, one key improvement is supporting not just the "old" ARM debug LED API (with timer and idle LEDs, plus four that can be handy for kernel debugging), but it also supports the "new" generic LED API (most useful for usermode stuff IMO). Either or both APIs can be enabled. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: FB: add controller platform dataImre Deak2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add controller platform data Signed-off-by: Imre Deak <imre.deak@solidboot.com> Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: Add function to print clock usecountsJuha Yrjola2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Useful for debugging power management code. Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: Add DMA IRQ sanity checksJuha Yrjola2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add DMA IRQ sanity checks Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | | * ARM: OMAP: gpio init section cleanupsDavid Brownell2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Minor GPIO cleanups: remove needless #include, and omap_gpio_init() should be __init, as well as all the board init code calling it. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | * | [ARM] Fix ARM branch relocation rangeKevin Welton2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Branches in the ARM architecture are restricted to a range of +/- 32MB. However, the code in .../arch/arm/kernel/module.c::apply_relocate() was checking offset against a range of +/- 64MB. Signed-off-by: Kevin Welton <Kevin.Welton@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | | * | [ARM] Fix ASID version switchRussell King2007-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Close a hole in the ASID version switch, particularly the following scenario: CPU0 MM PID CPU1 MM PID idle A pid(A) A idle(lazy tlb) * new asid version triggered by B * B pid(B) A pid(A) * MM A gets new asid version * A idle(lazy tlb) A pid(A) * CPU1 doesn't see the new ASID * The result is that CPU1 continues running with the hardware set for the original (stale) ASID value, but mm->context.id contains the new ASID value. The result is that the next MM fault on CPU1 updates the page table entries, but flush_tlb_page() fails due to wrong ASID. There is a related case with a threaded application is allocated a new ASID on one CPU while another of its threads is running on some different CPU. This scenario is not fixed by this commit. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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