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* [ARM] 3262/4: allow ptraced syscalls to be overridenNicolas Pitre2006-01-14
| | | | | | | | | | | | | Patch from Nicolas Pitre This is needed by strace to properly handle the tracing of some system calls. It could be useful for other applications as well. Based on an earlier patch from Daniel Jacobowitz. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Daniel Jacobowitz <dan@debian.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3112/1: old ABI compat: config option to turn it onNicolas Pitre2006-01-14
| | | | | | | | | Patch from Nicolas Pitre Enjoy ! Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3111/2: old ABI compat: adjust NWFPE to be operational within an EABI ↵Nicolas Pitre2006-01-14
| | | | | | | | | | | | kernel Patch from Nicolas Pitre We need NWFPE if we want to support execution of legacy binaries with an EABI kernel. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3110/5: old ABI compat: multi-ABI syscall entry supportNicolas Pitre2006-01-14
| | | | | | | | | | | Patch from Nicolas Pitre This patch adds the required code to support both user space ABIs at the same time. A second syscall table is created to include legacy ABI syscalls that need an ABI compat wrapper. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3109/1: old ABI compat: syscall wrappers for ABI impedance matchingNicolas Pitre2006-01-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre The difference between EABI and the legacy ABI may affect either structure member alignment and/or argument register selection. The patch has the details. Included are wrappers for the following syscalls: sys_stat64 sys_lstat64 sys_fstat64 sys_fcntl64 sys_epoll_ctl sys_epoll_wait sys_ipc sys_semop sys_semtimedop sys_pread64 sys_pwrite64 sys_truncate64 sys_ftruncate64 sys_readahead Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3108/2: old ABI compat: statfs64 and fstatfs64Nicolas Pitre2006-01-14
| | | | | | | | | | | | Patch from Nicolas Pitre struct statfs64 has extra padding with EABI growing its size from 84 to 88. This struct is now __attribute__((packed,aligned(4))) with a small assembly wrapper to force the sz argument to 84 if it is 88 to avoid copying the extra padding over user space memory unexpecting it. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3107/3: ARM EABI: last bits to configure itNicolas Pitre2006-01-14
| | | | | | | | | | | | | Patch from Nicolas Pitre This adds the configuration option, and disables any FPA floating point emulators which are not EABI compatible. It also disables Acorn RISC OS/Arthur binary support when CONFIG_EABI=y since it is incompatible with an EABI kernel. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3105/4: ARM EABI: new syscall entry conventionNicolas Pitre2006-01-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre For a while we wanted to change the way syscalls were called on ARM. Instead of encoding the syscall number in the swi instruction which requires reading back the instruction from memory to extract that number and polluting the data cache, it was decided that simply storing the syscall number into r7 would be more efficient. Since this represents an ABI change then making that change at the same time as EABI support is the right thing to do. It is now expected that EABI user space binaries put the syscall number into r7 and use "swi 0" to call the kernel. Syscall register argument are also expected to have "EABI arrangement" i.e. 64-bit arguments should be put in a pair of registers from an even register number. Example with long ftruncate64(unsigned int fd, loff_t length): legacy ABI: - put fd into r0 - put length into r1-r2 - use "swi #(0x900000 + 194)" to call the kernel new ARM EABI: - put fd into r0 - put length into r2-r3 (skipping over r1) - put 194 into r7 - use "swi 0" to call the kernel Note that it is important to use 0 for the swi argument as backward compatibility with legacy ABI user space relies on this. The syscall macros in asm-arm/unistd.h were also updated to support both ABIs and implement the right call method automatically. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3104/1: ARM EABI: new helper function namesNicolas Pitre2006-01-14
| | | | | | | | | Patch from Nicolas Pitre The ARM EABI defines new names for GCC helper functions. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3103/1: ARM EABI: stack pointer must be 64-bit aligned (part 2)Nicolas Pitre2006-01-14
| | | | | | | | | | Patch from Nicolas Pitre We must make sure that assembly code that modifies the stack pointer before calling a C function does it so it remains 64-bit aligned. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3102/1: ARM EABI: stack pointer must be 64-bit aligned after a CPU ↵Nicolas Pitre2006-01-14
| | | | | | | | | | | | | | | | | | | | exception Patch from Nicolas Pitre The ARM EABI says that the stack pointer has to be 64-bit aligned for reasons already mentioned in patch #3101 when calling C functions. We therefore must verify and adjust sp accordingly when taking an exception from kernel mode since sp might not necessarily be 64-bit aligned if the exception occurs in the middle of a kernel function. If the exception occurs while in user mode then no sp fixup is needed as long as sizeof(struct pt_regs) as well as any additional syscall data stack space remain multiples of 8. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Separate VIC (vectored interrupt controller) support from VersatileRussell King2006-01-13
| | | | | | | Other machines may wish to make use of the VIC support code, so move it to arch/arm/common. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Remove useless 'default n' from Kconfig filesRussell King2006-01-13
| | | | | | The default is already 'n' so there's no need to explicitly state it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Support register switch in nommu modeHyok S. Choi2006-01-13
| | | | | | | This patch adds register switch support 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] 3260/1: remove phys_ram from struct machine_desc (part 2)Nicolas Pitre2006-01-13
| | | | | | | | | | | | Patch from Nicolas Pitre This field is redundent since it must be equal to PHYS_OFFSET anyway. Now that no code uses it anymore, mark it deprecated and remove all initializations from the tree. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3259/1: remove phys_ram from struct machine_desc (part 1)Nicolas Pitre2006-01-13
| | | | | | | | | | | Patch from Nicolas Pitre This field is redundent since it must be equal to PHYS_OFFSET anyway. First, let's use PHYS_OFFSET directly instead. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3257/1: ixp2000: map in scratch and sramLennert Buytenhek2006-01-13
| | | | | | | | | | | | | | Patch from Lennert Buytenhek For the ixp2000 netdev driver, we need to map in a chunk of SRAM (to store the transmit and receive descriptors) and the scratch get/put area (so that we can use the scratchpad rings in the cpu for managing the descriptors.) These are the final two mappings needed for the netdev driver and the last missing piece for the driver in mainline to work. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 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>
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