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* [IA64] prevent accidental modification of args in jprobe handlerZhang Yanmin2006-01-13
| | | | | | | | | | | When jprobe is hit, the function parameters of the original function should be saved before jprobe handler is executed, and restored it after jprobe handler is executed, because jprobe handler might change the register values due to tail call optimization by the gcc. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Add hotplug cpu to salinfo.c, replace semaphore with mutexKeith Owens2006-01-13
| | | | | | | | | | | | | | | | | | Add hotplug cpu support to salinfo.c. The cpu_event field is a cpumask so use the cpu_* macros consistently, replacing the existing mixture of cpu_* and *_bit macros. Instead of counting the number of outstanding events in a semaphore and trying to track that count over user space context, interrupt context, non-maskable interrupt context and cpu hotplug, replace the semaphore with a test for "any bits set" combined with a mutex. Modify the locking to make the test for "work to do" an atomic operation. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Handle debug traps in fsys modeJason Uhlenkott2006-01-13
| | | | | | | | We need to handle debug traps in fsys mode non-fatally. They can happen now that we have fsyscalls which contain probe instructions. Signed-off-by: Jason Uhlenkott <jasonuhl@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Fix sn_flush_device_kernel & spinlock initializationPrarit Bhargava2006-01-13
| | | | | | | | | | | | | | | | | | | | | | This patch separates the sn_flush_device_list struct into kernel and common (both kernel and PROM accessible) structures. As it was, if the size of a spinlock_t changed (due to additional CONFIG options, etc.) the sal call which populated the sn_flush_device_list structs would erroneously write data (and cause memory corruption and/or a panic). This patch does the following: 1. Removes sn_flush_device_list and adds sn_flush_device_common and sn_flush_device_kernel. 2. Adds a new SAL call to populate a sn_flush_device_common struct per device, not per widget as previously done. 3. Correctly initializes each device's sn_flush_device_kernel spinlock_t struct (before it was only doing each widget's first device). Signed-off-by: Prarit Bhargava <prarit@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Hole in IA64 TLB flushing from system threadsJack Steiner2006-01-13
| | | | | | | | | | | | | | | | I originally thought this was an bug only in the SN code, but I think I also see a hole in the generic IA64 tlb code. (Separate patch was sent for the SN problem). It looks like there is a bug in the TLB flushing code. During context switch, kernel threads (kswapd, for example) inherit the mm of the task that was previously running on the cpu. Normally, this is ok because the previous context is still loaded into the RR registers. However, if the owner of the mm migrates to another cpu, changes it's context number, and references a page before kswapd issues a tlb_purge for that same page, the purge will be done with a stale context number (& RR registers). Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] Altix BTE error handling fixesRuss Anderson2006-01-13
| | | | | | | | | | Altix (shub2) pushes the BTE clean-up into SAL. This patch correctly interfaces with the now implemented SAL call. It also fixes a bug when delaying clean-up to allow busy BTEs to complete (or error out). Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Fix conversion of pal_min_state physical addressFrancois Wellenrieter2006-01-13
| | | | | | | | | On return from INIT handler we must convert the address of the minstate area from a kernel virtual uncached address (0xC...) to physical uncached (0x8...). A typo (or thinko?) in the code converted to physical cached. Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] move xpc.h to include/asm-ia64/sn (cleanup)Dean Nelson2006-01-13
| | | | | | | | Cleanup a few items after moving xpc.h from arch/ia64/sn/kernel to include/asm-ia64/sn. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] move xpc.h to include/asm-ia64/snDean Nelson2006-01-13
| | | | | | | Move xpc.h from arch/ia64/sn/kernel to include/asm-ia64/sn without change. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] move xpc_system_reboot()Dean Nelson2006-01-13
| | | | | | | | Move xpc_system_reboot() to be closer to the file it calls for readability reasons (which are indeed subjective). Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] ignoring loss of heartbeat while XPC is in kdebugDean Nelson2006-01-13
| | | | | | | | Allow for the loss of heartbeat while in kdebug to be ignored by remote partitions. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] XPC and unregistering from notifier listsDean Nelson2006-01-13
| | | | | | | Only unregister from notifier lists if XPC is unloading. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] cleanup XPC disengage related messagesDean Nelson2006-01-13
| | | | | | | Cleanup the XPC disengage related messages that are printed to the log. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64-SGI] ensure XPC disengage request is processedDean Nelson2006-01-13
| | | | | | | | | | | This patch fixes a problem in XPC disengage processing whereby it was not seeing the request to disengage from a remote partition, so the disengage wasn't happening. The disengagement is suppose to transpire during the time a XPC channel is disconnecting, and should be completed before the channel is declared to be disconnected. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] Add stub entry to fsys.S for sys_migrate_pagesTony Luck2006-01-13
| | | | | | | | | | | When this new syscall was added to ia64 in commit 39743889aaf76725152f16aa90ca3c45f6d52da3 fsys.S was forgotten. Add a ".data8 0" there to keep it in step. [Reported by Stephane Eranian] Signed-off-by: Tony Luck <tony.luck@intel.com>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-01-12
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| * [ARM] Convert some arm semaphores to mutexesArjan van de Ven2006-01-12
| | | | | | | | | | | | | | | | The arm clock semaphores are strict mutexes, convert them to the new mutex implementation Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Allow r2 to be passed through the decompressor to the kernelRussell King2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is part of a patch from Marc Singer to allow r2 to be passed to the kernel. Marc's original comments follow: This revised R2 (atags pointer) patch incorporates comments from Nico Pitre and Ben Dooks. It modifies the head.S files such that the R2 value set by the bootloader is conveyed to the kernel startup code. The kernel head.S heuristically validates the pointer. It will set R2 to zero if it believes the pointer is invalid. Presently, it requires that the ATAGS list reside in the first 16KiB of physical RAM. Relaxing this contraint may be both desirable as well as tricky. Signed-off-by: Marc Singer <elf@buici.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3256/1: Make the function-returning ldm's use sp as the base registerCatalin Marinas2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Catalin Marinas If the low interrupt latency mode is enabled for the CPU (from ARMv6 onwards), the ldm/stm instructions are no longer atomic. An ldm instruction restoring the sp and pc registers can be interrupted immediately after sp was updated but before the pc. If this happens, the CPU restores the base register to the value before the ldm instruction but if the base register is not sp, the interrupt routine will corrupt the stack and the restarted ldm instruction will load garbage. Note that future ARM cores might always run in the low interrupt latency mode. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3234/1: Update cpu_architecture() to deal with the new ID formatCatalin Marinas2006-01-12
| | | | | | | | | | | | | | | | | | | | Patch from Catalin Marinas Since ARM1176, the CPU ID format has changed and it will also be used for future ARM architectures. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3209/1: Configurable DMA-consistent memory regionKevin Hilman2006-01-12
| | | | | | | | | | | | | | | | | | Patch from Kevin Hilman This patch increase available DMA-consistent memory allocated by dma_coherent_alloc(). The default remains at 2M (defined in asm/memory.h) and each platform has the ability to override in asm/arch-foo/memory.h. Signed-off-by: Kevin Hilman <kevin@hilman.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3247/1: AT91RM9200 support for 2.6 (Cogent CSB337 & CSB637 boards) (PatchAndrew Victor2006-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | #3244) Patch from Andrew Victor This patch adds support to the 2.6 kernel series for the Atmel AT91RM9200 processor. This patch is the support for the Cogent CSB337 and CSB637 boards. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3243/2: AT91RM9200 support for 2.6 (Atmel DK & EK boards)Andrew Victor2006-01-10
| | | | | | | | | | | | | | | | | | | | | | | | Patch from Andrew Victor This patch adds support to the 2.6 kernel series for the Atmel AT91RM9200 processor. This patch is the support for Atmel's DK and EK boards. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds2006-01-12
|\ \ | | | | | | | | | | | | | | | | | | Fix up delete/modify conflict of arch/ppc/kernel/process.c by hand (it's gone, gone, gone). Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | powerpc: make ARCH=ppc use arch/powerpc/kernel/process.cPaul Mackerras2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 5388fb1025443ec223ba556b10efc4c5f83f8682 made signal_32.c use discard_lazy_cpu_state, which broke ARCH=ppc because that uses the common signal_32.c but has its own process.c. Make ARCH=ppc use the common process.c to fix this and to reduce the amount of duplicated code. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: cell namespace cleanupArnd Bergmann2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | These symbols are only used in the file that they are defined in, so they should not be in the global namespace. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: xmon namespace cleanupsArnd Bergmann2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | These symbols are only used in the file that they are defined in, so they should not be in the global namespace. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: pmac namespace cleanupArnd Bergmann2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | pmac_setup_arch is only used in the file that it is defined in, so it should not be in the global namespace. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: pseries namespace cleanupArnd Bergmann2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | These symbols are only used in the file that they are defined in, so they should not be in the global namespace. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: minor dart driver cleanupOlof Johansson2006-01-12
| | | | | | | | | | | | | | | | | | | | | Rpn is assigned every time in the loop, no need to increase it too. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: small pci cleanupsStephen Rothwell2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | pcibios_claim_one_bus is not needed on iSeries and phbs_remap_io can be mode static. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: clean up iommu.h a bitStephen Rothwell2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was a function declared for CONFIG_PSERIES which no longer exists and the two function declarations for CONFIG_ISERIES have been moved into an include file in platforms/iseries since they are defined and used only there. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: iSeries fixes for build with no PCIStephen Rothwell2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts part of "ppc64 iSeries: allow build with no PCI" (145d01e4287b8cbf50f87c3283e33bf5c84e8468) which affected generic code and applies a fix in the arch specific code. Commit "partly merge iseries do_IRQ" (5fee9b3b39eb55c7e3619a3b36ceeabffeb8f144) introduced iSeries_get_irq which was only available if CONFIG_PCI is set. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: eliminate bitfields from ItLpNacaStephen Rothwell2006-01-12
| | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: remove bitfields from HvLpEventStephen Rothwell2006-01-12
| | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: Fixed memory reserve map layoutKumar Gala2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | powerpc: Fixed memory reserve map layout The memory reserve map is suppose to be a pair of 64-bit integers to represent each region. On ppc32 the code was treating the pair as two 32-bit integers. Additional the prom_init code was producing the wrong layout on ppc32. Added a simple check to try to provide backwards compatibility. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: remove warning in EEH codeOlof Johansson2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | Remove warning in eeh code about mixed variables and code. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: Avoid potential FP corruption with preempt and UPPaul Mackerras2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Heikki Lindholm pointed out that there was a potential race with the lazy CPU state (FP, VR, EVR) stuff if preempt is enabled. The race is that in the process of restoring FP state on sigreturn, the task gets preempted by a user task that wants to use the FPU. It will take an FP unavailable exception, which will write the current FPU state to the thread_struct, overwriting the values which sigreturn has stored. Note that this can only happen on UP since we don't implement lazy CPU state on SMP. The fix is to flush the lazy CPU state before updating the thread_struct. To do this we re-use the flush_lazy_cpu_state() function from process.c. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] m68k: console code in head.S needs framebuffer support built inAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: fix reference to init_task in vmlinux-sun3.ldsAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | it's *(.data.init_task), not init_task... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: fix use of void foo(void) asm("bar") in traps.cAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | with gcc4 these have file scope, so having them different in different blocks doesn't work anymore Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: kill mach_floppy_setup, convert to proper __setup() in driversAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: Moved initialisation of conswitchp from subarches to global ↵Al Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch setup Signed-off-by: Kars de Jong <jongk@linux-m68k.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: NULL noise removalAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: checksum __user annotationsAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: syscalls __user annotationAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: rtc __user annotationsAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: signal __user annotationsAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: basic iomem annotationsAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k: broken constraints on mulu.lAl Viro2006-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Too permissive constraint on mulu.l - the first argument should not be an a-register. Fixed by replacing "g" with "dm"; with older gcc we got lucky and it had never attempted mulu.l %a0, %d1:%d0. These days it does, with predictable objections from as(1). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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