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* [ARM] 3427/1: ARM: OMAP: 2/8 Update timersTony Lindgren2006-04-02
| | | | | | | | | | | | | | Patch from Tony Lindgren Update OMAP timers from linux-omap tree. The highlights of the patch are: - Move timer32k code from mach-omap1 to plat-omap and make it work also on omap24xx by Tony Lindgren - Add support for dmtimer idle check for PM by Tuukka Tikkanen Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3426/1: ARM: OMAP: 1/8 Update clock frameworkTony Lindgren2006-04-02
| | | | | | | | | | | | | | | Patch from Tony Lindgren Update OMAP clock framework from linux-omap tree. The highlights of the patch are: - Add support for omap730 clocks by Andrzej Zaborowski - Fix compile warnings by Dirk Behme - Add support for using dev id by Tony Lindgren and Komal Shah - Move memory timings and PRCM into separate files by Tony Lindgren Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3396/2: AT91RM9200 Platform devices updateAndrew Victor2006-04-02
| | | | | | | | | | | | | Patch from Andrew Victor This patch updates the platform device resources for the Ethernet and MMC peripherals. It also adds platform device information for the NAND (SmartMedia), I2C and the RTC. (This version of the patch can be applied before Patch 3392/1) Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3395/2: AT91RM9200 Dataflash Card vs MMC selectionAndrew Victor2006-04-02
| | | | | | | | | | | | | | Patch from Andrew Victor On the Atmel AT91RM9200-DK and -EK boards, a pin is used to control whether the card socket is used for a DataFlash Card or an MMC/SD card. We now default to MMC/SD in the configuration files. (This version of the patch can be applied before Patch 3392/1) Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3393/2: AT91RM9200 LED supportAndrew Victor2006-04-02
| | | | | | | | | | | Patch from Andrew Victor This patch adds support for the LED(s) on the AT91RM9200-based boards. (This version of the patch can be applied before Patch 3392/1) Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3453/1: Poodle: Correctly set the memory sizeRichard Purdie2006-04-02
| | | | | | | | | Patch from Richard Purdie Force the Sharp Zaurus Poodle memory size to 32MB. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3446/1: i.MX: MMC/SD SDHC controller registration for i.MX/MX1 MX1ADS ↵Pavel Pisa2006-04-02
| | | | | | | | | | | | | | | | board Patch from Pavel Pisa From: Stefano Fedrigo <aleph@develer.com> This adds to the MX1ADS platform the needed code to detect insertion/removal of an MMC/SD card. Tested on a v1.1 board. Signed-off-by: Stefano Fedrigo <aleph@develer.com> Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3444/1: i.MX: Scatter-gather DMA emulation for i.MX/MX1Pavel Pisa2006-04-02
| | | | | | | | | | | | | | | | | Patch from Pavel Pisa This patch contains simplified set of changes to add scatter-gather emulation capability into MX1 DMA support. The result should be still usable for next combination of DMA transfers Statter-Gather/linear/2D/FIFO to linear/2D/FIFO and linear/2D/FIFO to Statter-Gather/2D/FIFO The patch corrects channel priority allocation to be compatible with MX1 hardware implementation. Previous code has not been adapted from its PXA original. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3451/1: ep93xx: use the m48t86 rtc driver on the ts72xx platformLennert Buytenhek2006-04-02
| | | | | | | | | Patch from Lennert Buytenhek Instantiate the recently merged m48t86 rtc driver in the ts72xx code. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3450/1: ep93xx: use the ep93xx rtc driverLennert Buytenhek2006-04-02
| | | | | | | | | Patch from Lennert Buytenhek Instantiate the recently merged ep93xx rtc driver in the ep93xx code. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3452/1: [S3C2410] RX3715 - add nand informationBen Dooks2006-04-02
| | | | | | | | | | Patch from Ben Dooks NAND definitions for the HP iPAQ RX3715's internal NAND flash Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3449/1: [S3C2410] Anubis - fix NAND timingsBen Dooks2006-04-02
| | | | | | | | | | | Patch from Ben Dooks The NAND timings on the Anubis are too large to be selected when running at 133MHz memory clock. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3448/1: [S3C2410] Settle delay when _enabling_ USB PLLBen Dooks2006-04-02
| | | | | | | | | | | Patch from Ben Dooks Fix the bug in the UPLL enable code which should have put a 200uS delay in if enabling the USB PLL from the state where it is off. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3442/1: [S3C2410] SMDK: NAND device setupBen Dooks2006-04-02
| | | | | | | | | | Patch from Ben Dooks Add SMDK2410/SMDK2440 NAND device information and default partition table. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3447/1: [S3C2410] SMDK - default LEDs to offBen Dooks2006-04-02
| | | | | | | | | | | Patch from Ben Dooks Set default state of LEDs to off Fixes context of Patch #3442/1 Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3439/2: xsc3: add I/O coherency supportLennert Buytenhek2006-04-01
| | | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek This patch adds support for the I/O coherent cache available on the xsc3. The approach is to provide a simple API to determine whether the chipset supports coherency by calling arch_is_coherent() and then setting the appropriate system memory PTE and PMD bits. In addition, we call this API on dma_alloc_coherent() and dma_map_single() calls. A generic version exists that will compile out all the coherency-related code that is not needed on the majority of ARM systems. Note that we do not check for coherency in the dma_alloc_writecombine() function as that still requires a special PTE setting. We also don't touch dma_mmap_coherent() as that is a special ARM-only API that is by definition only used on non-coherent system. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3440/1: [S3C2410] make SMDK2410 and SMDK2440 similarities commonBen Dooks2006-04-01
| | | | | | | | | | | Patch from Ben Dooks The SMDK2410 and SMDK2440 boards have a number of items in common, including the LEDs, Ethernet, PCMCIA. Make a common SMDK support file. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3438/1: ixp23xx: add pci slave supportLennert Buytenhek2006-04-01
| | | | | | | | | | | | | | | | Patch from Lennert Buytenhek On the Double Espresso board, the IXP2350s are PCI slave devices and we skip calling pci_common_init() as that enumerates the bus. But even though we are a PCI slave device, there is still some PCI-related setup that has to be done. Create ixp23xx_pci_common_init(), move the common initialisation bits there, and have this function called from both the PCI master and the PCI slave init path. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3436/1: 2.6.16-git18: collie_defconfig brokenPavel Machek2006-04-01
| | | | | | | | | | | | | | | | | | | Patch from Pavel Machek > The kautobuild found the following error while trying to build 2.6.16-git18 > using collie_defconfig: > > arch/arm/mach-sa1100/collie.c:92: error: 'collie_uart_set_mctrl' undeclared here (not in a function) > arch/arm/mach-sa1100/collie.c:93: error: 'collie_uart_get_mctrl' undeclared here (not in a function) > make[1]: *** [arch/arm/mach-sa1100/collie.o] Error 1 > make: *** [arch/arm/mach-sa1100] Error 2 > make: Leaving directory `/var/tmp/kernel-orig' This fixes above compile error by adding missing pieces of uart support, and fixes compilation. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3437/1: Kill duplicate exports of string library functionsKomal Shah2006-04-01
| | | | | | | | | Patch from Komal Shah This patch fixes the duplicate exports of string library functions. Signed-off-by: Komal Shah <komal_shah802003@yahoo.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-04-01
|\ | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3424/2: ixp23xx: fix uncompress.h for recent CRLF decompressor change [ARM] 3434/1: pxa i2s amsl define [ARM] 3425/1: xsc3: need to include pgtable-hwdef.h [ARM] Allow un-muxed syscalls to be available for everyone [ARM] 3420/1: Missing clobber in example code [ARM] nommu: fixups for the exception vectors [ARM] nommu: add nommu specific Kconfig and MMUEXT variable in Makefile [ARM] nommu: start-up code [ARM] nommu: MPU support in boot/compressed/head.S
| * [ARM] 3425/1: xsc3: need to include pgtable-hwdef.hLennert Buytenhek2006-03-30
| | | | | | | | | | | | | | | | | | | | Patch from Lennert Buytenhek Adapt xsc3 to the changes in 74945c8616a50074277e18641baaae7464006766 (xsc3 was written before but merged after the latter went in.) Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3420/1: Missing clobber in example codePaul Brook2006-03-28
| | | | | | | | | | | | | | | | | | | | Patch from Paul Brook The example code in the source documentation for __kernel_dmb clobbers r0 but doesn't list it the asm clobber list. Signed-off-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * Merge nommu treeRussell King2006-03-28
| |\
| | * [ARM] nommu: fixups for the exception vectorsHyok S. Choi2006-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | The high page vector (0xFFFF0000) does not supported in nommu mode. This patch allows the vectors to be 0x00000000 or the begining of DRAM in nommu mode. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * [ARM] nommu: add nommu specific Kconfig and MMUEXT variable in MakefileHyok S. Choi2006-03-27
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds Kconfig-nommu for noMMU specific configurations and MMUEXT variable into Makefile. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * [ARM] nommu: start-up codeHyok S. Choi2006-03-27
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds nommu version start-up code head-nommu.S. The common part of the start-up codes is moved to head-common.S. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * [ARM] nommu: MPU support in boot/compressed/head.SHyok S. Choi2006-03-27
| | | | | | | | | | | | | | | | | | | | | This patch adds MPU support in boot/compressed/head.S. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | Merge branch 'release' of ↵Linus Torvalds2006-04-01
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Avoid "u64 foo : 32;" for gcc3 vs. gcc4 compatibility [IA64] Export cpu cache info by sysfs
| * | | [IA64] Avoid "u64 foo : 32;" for gcc3 vs. gcc4 compatibilityTony Luck2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc3 thinks that a 32-bit field of a u64 type is itself a u64, so should be printed with "%ld". gcc4 thinks it needs just "%d". Make both versions happy by avoiding this construct. Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | [IA64] Export cpu cache info by sysfsZhang, Yanmin2006-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch exports 8 attributes of cpu cache info under /sys/devices/system/cpu/cpuX/cache/indexX: 1) level 2) type 3) coherency_line_size 4) ways_of_associativity 5) size 6) shared_cpu_map 7) attributes 8) number_of_sets: number_of_sets=size/ways_of_associativity/coherency_line_size. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | | [PATCH] unexport get_wchanAdrian Bunk2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The only user of get_wchan is the proc fs - and proc can't be built modular. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] backlight: corgi_bl: Generalise to support other Sharp SL hardwareRichard Purdie2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Generalise the Corgi backlight driver by moving the default intensity and limit mask settings into the platform specific data structure. This enables the driver to support other Zaurus hardware, specifically the SL-6000x (Tosa) model. Also change the spinlock to a mutex (the spinlock is overkill). Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] LED: add device support for tosaDirk Opfer2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds LED drivers for LEDs found on the Sharp Zaurus c6000 model (tosa). Signed-off-by: Dirk Opfer <dirk@opfer-online.de> Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] LED: add LED device support for the zaurus corgi and spitz modelsRichard Purdie2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds LED drivers for LEDs found on the Sharp Zaurus c7x0 (corgi, shepherd, husky) and cxx00 (akita, spitz, borzoi) models. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] LED: add sharp charger status LED triggerRichard Purdie2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an LED trigger for the charger status as found on the Sharp Zaurus series of devices. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Acked-by: Pavel Machek <pavel@suse.cz> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] LED: add LED classRichard Purdie2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the foundations of a new LEDs subsystem. This patch adds a class which presents LED devices within sysfs and allows their brightness to be controlled. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] sys_sync_file_range()Andrew Morton2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the recently-added LINUX_FADV_ASYNC_WRITE and LINUX_FADV_WRITE_WAIT fadvise() additions, do it in a new sys_sync_file_range() syscall instead. Reasons: - It's more flexible. Things which would require two or three syscalls with fadvise() can be done in a single syscall. - Using fadvise() in this manner is something not covered by POSIX. The patch wires up the syscall for x86. The sycall is implemented in the new fs/sync.c. The intention is that we can move sys_fsync(), sys_fdatasync() and perhaps sys_sync() into there later. Documentation for the syscall is in fs/sync.c. A test app (sync_file_range.c) is in http://www.zip.com.au/~akpm/linux/patches/stuff/ext3-tools.tar.gz. The available-to-GPL-modules do_sync_file_range() is for knfsd: "A COMMIT can say NFS_DATA_SYNC or NFS_FILE_SYNC. I can skip the ->fsync call for NFS_DATA_SYNC which is hopefully the more common." Note: the `async' writeout mode SYNC_FILE_RANGE_WRITE will turn synchronous if the queue is congested. This is trivial to fix: add a new flag bit, set wbc->nonblocking. But I'm not sure that we want to expose implementation details down to that level. Note: it's notable that we can sync an fd which wasn't opened for writing. Same with fsync() and fdatasync()). Note: the code takes some care to handle attempts to sync file contents outside the 16TB offset on 32-bit machines. It makes such attempts appear to succeed, for best 32-bit/64-bit compatibility. Perhaps it should make such requests fail... Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] Don't pass boot parameters to argv_init[]OGAWA Hirofumi2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The boot cmdline is parsed in parse_early_param() and parse_args(,unknown_bootoption). And __setup() is used in obsolete_checksetup(). start_kernel() -> parse_args() -> unknown_bootoption() -> obsolete_checksetup() If __setup()'s callback (->setup_func()) returns 1 in obsolete_checksetup(), obsolete_checksetup() thinks a parameter was handled. If ->setup_func() returns 0, obsolete_checksetup() tries other ->setup_func(). If all ->setup_func() that matched a parameter returns 0, a parameter is seted to argv_init[]. Then, when runing /sbin/init or init=app, argv_init[] is passed to the app. If the app doesn't ignore those arguments, it will warning and exit. This patch fixes a wrong usage of it, however fixes obvious one only. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] Mark unwind info for signal trampolines in vDSOsJakub Jelinek2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mark unwind info for signal trampolines using the new S augmentation flag introduced in: http://gcc.gnu.org/PR26208. GCC 4.2 (or patched earlier GCC) will be able to special case unwinding through frames right above signal trampolines. As the augmentations start with z flag and S is at the very end of the augmentation string, older GCCs will just skip the S flag as unknown (that's why an augmentation flag was chosen over say a new CFA opcode). Signed-off-by: Jakub Jelinek <jakub@redhat.com> Cc: Andi Kleen <ak@muc.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] for_each_possible_cpu: s390KAMEZAWA Hiroyuki2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | for_each_cpu() actually iterates across all possible CPUs. We've had mistakes in the past where people were using for_each_cpu() where they should have been iterating across only online or present CPUs. This is inefficient and possibly buggy. We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the future. This patch replaces for_each_cpu with for_each_possible_cpu. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: check for differences in host supportPaolo 'Blaisorblade' Giarrusso2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If running on a host not supporting TLS (for instance 2.4) we should report that cleanly to the user, instead of printing not comprehensible "error 5" for that. Additionally, i386 and x86_64 support different ranges for user_desc->entry_number, and we must account for that; we couldn't pass ourselves -1 because we need to override previously existing TLS descriptors which glibc has possibly set, so test at startup the range to use. x86 and x86_64 existing ranges are hardcoded. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: add arch_switch_to for newly forked threadPaolo 'Blaisorblade' Giarrusso2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Newly forked threads have no arch_switch_to_skas() called before their first run, because when schedule() switches to them they're resumed in the body of thread_wait() inside fork_handler() rather than in switch_threads() in switch_to_skas(). Compensate this missing call. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: tls support: hack to make it compile on any hostPaolo 'Blaisorblade' Giarrusso2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Copy the definition of struct user_desc (with another name) for use by userspace sources (where we use the host headers, and we can't be sure about their content) to make sure UML compiles. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: implement {get,set}_thread_area for i386Paolo 'Blaisorblade' Giarrusso2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement sys_[gs]et_thread_area and the corresponding ptrace operations for UML. This is the main chunk, additional parts follow. This implementation is now well tested and has run reliably for some time, and we've understood all the previously existing problems. Their implementation saves the new GDT content and then forwards the call to the host when appropriate, i.e. immediately when the target process is running or on context switch otherwise (i.e. on fork and on ptrace() calls). In SKAS mode, we must switch registers on each context switch (because SKAS does not switches tls_array together with current->mm). Also, added get_cpu() locking; this has been done for SKAS mode, since TT does not need it (it does not use smp_processor_id()). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: clean arch_switch usagePaolo 'Blaisorblade' Giarrusso2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Call arch_switch also in switch_to_skas, even if it's, for now, a no-op for that case (and mark this in the comment); this will change soon. Also, arch_switch for TT mode is actually useless when the PT proxy (a complicate debugging instrumentation for TT mode) is not enabled. In fact, it only calls update_debugregs, which checks debugregs_seq against seq (to check if the registers are up-to-date - seq here means a "version number" of the registers). If the ptrace proxy is not enabled, debugregs_seq always stays 0 and update_debugregs will be a no-op. So, optimize this out (the compiler can't do it). Also, I've been disappointed by the fact that it would make a lot of sense if, after calling a successful update_debugregs(current->thread.arch.debugregs_seq), current->thread.arch.debugregs_seq were updated with the new debugregs_seq. But this is not done. Is this a bug or a feature? For all purposes, it seems a bug (otherwise the whole mechanism does not make sense, which is also a possibility to check), which causes some performance only problems (not correctness), since we write_debugregs when not needed. Also, as suggested by Jeff, remove a redundant enabling of SIGVTALRM, comprised in the subsequent local_irq_enable(). I'm just a bit dubious if ordering matters there... Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: split ldt.h in arch-independent and arch-dependant codePaolo 'Blaisorblade' Giarrusso2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ldt-{i386,x86_64}.h is made of two different parts - some code for parsing of LDT descriptors, which is arch-dependant, and the code to handle uml_ldt_t (an LDT block inside UML), which is mostly arch-independant (among x86 and x86_64, at least). Join the common part in a single file (ldt.h) and split the rest away (host_ldt-{i386,x86_64}.h). This is needed because processor.h, with next patches, will start including the LDT descriptor parsing macros in host_ldt.h, but it can't include ldt.h because it uses semaphores (and to define semaphores one must first include processor.h!). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: idle thread needn't take access to init_mmPaolo 'Blaisorblade' Giarrusso2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Comparing this code which is the actual body of the arch-independent cpu_idle(), it is clear that it's unnecessary to set ->mm and ->active_mm; beyond that, a kernel thread is not supposed to have ->mm != NULL, only active_mm. This showed up because I used the assumption (which is IMHO valid) that kernel thread have their ->mm == NULL, and it failed for this thread. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: fix min usageAl Viro2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | type-safe min() in arch/um/drivers/mconsole_kern.c Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | | [PATCH] uml: remove unused make variablesAl Viro2006-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removed assignments to unused variables in arch/um/os-Linux/Makefile Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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