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* [PATCH] kexec-ppc: fix for ksysfs crash_notesAlbert Herranz2005-07-121-0/+6
| | | | | | | | | | | | | | | | The following patch prevents the crash dump helper code found within kexec from breaking ppc which still lacks crash dump functionality. ksysfs crash_notes attribute handling was left under CONFIG_KEXEC for simplicity although it is not strictly kexec related. We provide here a dummy definition for crash_notes on ppc. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: stop misusing NTP's time_offset valuejohn stultz2005-07-051-5/+8
| | | | | | | | | | | | | | | | As part of my timeofday rework, I've been looking at the NTP code and I noticed that the PPC architecture is apparently misusing the NTP's time_offset (it is a terrible name!) value as some form of timezone offset. This could cause problems when time_offset changed by the NTP code. This patch changes the PPC code so it uses a more clear local variable: timezone_offset. Signed-off-by: John Stultz <johnstul@us.ibm.com> Acked-by: Tom Rini <trini@kernel.crashing.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] ppc32: use correct register names in arch/ppc/kernel/relocate_kernel.SOlaf Hering2005-06-301-2/+2
| | | | | | | | | | | | | CONFIG_KEXEC=y doesnt work: arch/ppc/kernel/relocate_kernel.S:37: Error: unsupported relocation against SRR1 arch/ppc/kernel/relocate_kernel.S:39: Error: unsupported relocation against SRR0 Signed-off-by: Olaf Hering <olh@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6Greg KH2005-06-271-0/+2
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| * [PATCH] Update cfq io scheduler to time sliced designJens Axboe2005-06-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This updates the CFQ io scheduler to the new time sliced design (cfq v3). It provides full process fairness, while giving excellent aggregate system throughput even for many competing processes. It supports io priorities, either inherited from the cpu nice value or set directly with the ioprio_get/set syscalls. The latter closely mimic set/getpriority. This import is based on my latest from -mm. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] PCI: fix-pci-mmap-on-ppc-and-ppc64.patchMichael Ellerman2005-06-271-2/+19
|/ | | | | | | | | | | | | | | | | | | | | | | This is an updated version of Ben's fix-pci-mmap-on-ppc-and-ppc64.patch which is in 2.6.12-rc4-mm1. It fixes the patch to work on PPC iSeries, removes some debug printks at Ben's request, and incorporates your fix-pci-mmap-on-ppc-and-ppc64-fix.patch also. Originally from Benjamin Herrenschmidt <benh@kernel.crashing.org> This patch was discussed at length on linux-pci and so far, the last iteration of it didn't raise any comment. It's effect is a nop on architecture that don't define the new pci_resource_to_user() callback anyway. It allows architecture like ppc who put weird things inside of PCI resource structures to convert to some different value for user visible ones. It also fixes mmap'ing of IO space on those archs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge Christoph's freeze cleanup patchLinus Torvalds2005-06-251-2/+1
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| * [PATCH] Cleanup patch for process freezingChristoph Lameter2005-06-251-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Establish a simple API for process freezing defined in linux/include/sched.h: frozen(process) Check for frozen process freezing(process) Check if a process is being frozen freeze(process) Tell a process to freeze (go to refrigerator) thaw_process(process) Restart process frozen_process(process) Process is frozen now 2. Remove all references to PF_FREEZE and PF_FROZEN from all kernel sources except sched.h 3. Fix numerous locations where try_to_freeze is manually done by a driver 4. Remove the argument that is no longer necessary from two function calls. 5. Some whitespace cleanup 6. Clear potential race in refrigerator (provides an open window of PF_FREEZE cleared before setting PF_FROZEN, recalc_sigpending does not check PF_FROZEN). This patch does not address the problem of freeze_processes() violating the rule that a task may only modify its own flags by setting PF_FREEZE. This is not clean in an SMP environment. freeze(process) is therefore not SMP safe! Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] kexec code cleanupManeesh Soni2005-06-251-17/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | o Following patch provides purely cosmetic changes and corrects CodingStyle guide lines related certain issues like below in kexec related files o braces for one line "if" statements, "for" loops, o more than 80 column wide lines, o No space after "while", "for" and "switch" key words o Changes: o take-2: Removed the extra tab before "case" key words. o take-3: Put operator at the end of line and space before "*/" Signed-off-by: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] kdump: Use real pt_regs from exceptionAlexander Nyberg2005-06-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Makes kexec_crashdump() take a pt_regs * as an argument. This allows to get exact register state at the point of the crash. If we come from direct panic assertion NULL will be passed and the current registers saved before crashdump. This hooks into two places: die(): check the conditions under which we will panic when calling do_exit and go there directly with the pt_regs that caused the fatal fault. die_nmi(): If we receive an NMI lockup while in the kernel use the pt_regs and go directly to crash_kexec(). We're probably nested up badly at this point so this might be the only chance to escape with proper information. Signed-off-by: Alexander Nyberg <alexn@telia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] kexec: kexec ppc supportEric W. Biederman2005-06-254-1/+247
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I have tweaked this patch slightly to handle an empty list of pages to relocate passed to relocate_new_kernel. And I have added ppc_md.machine_crash_shutdown. To keep up with the changes in the generic kexec infrastructure. From: Albert Herranz <albert_herranz@yahoo.es> The following patch adds support for kexec on the ppc32 platform. Non-OpenFirmware based platforms are likely to work directly without additional changes on the kernel side. The kexec-tools userland package may need to be slightly updated, though. For OpenFirmware based machines, additional work is still needed on the kernel side before kexec support is ready. Benjamin Herrenschmidt is kindly working on that part. In order for a ppc platform to use the kexec kernel services it must implement some ppc_md hooks. Otherwise, kexec will be explicitly disabled, as suggested by benh. There are 3+1 new ppc_md hooks that a platform supporting kexec may implement. Two of them are mandatory for kexec to work. See include/asm-ppc/machdep.h for details. - machine_kexec_prepare(image) This function is called to make any arrangements to the image before it is loaded. This hook _MUST_ be provided by a platform in order to activate kexec support for that platform. Otherwise, the platform is considered to not support kexec and the kexec_load system call will fail (that makes all existing platforms by default non-kexec'able). - machine_kexec_cleanup(image) This function is called to make any cleanups on image after the loaded image data it is freed. This hook is optional. A platform may or may not provide this hook. - machine_kexec(image) This function is called to perform the _actual_ kexec. This hook _MUST_ be provided by a platform in order to activate kexec support for that platform. If a platform provides machine_kexec_prepare but forgets to provide machine_kexec, a kexec will fall back to a reboot. A ready-to-use machine_kexec_simple() generic function is provided to, hopefully, simplify kexec adoption for embedded platforms. A platform may call this function from its specific machine_kexec hook, like this: void myplatform_kexec(struct kimage *image) { machine_kexec_simple(image); } - machine_shutdown() This function is called to perform any machine specific shutdowns, not already done by drivers. This hook is optional. A platform may or may not provide this hook. An example (trimmed) platform specific module for a platform supporting kexec through the existing machine_kexec_simple follows: /* ... */ #ifdef CONFIG_KEXEC int myplatform_kexec_prepare(struct kimage *image) { /* here, we can place additional preparations */ return 0; /* yes, we support kexec */ } void myplatform_kexec(struct kimage *image) { machine_kexec_simple(image); } #endif /* CONFIG_KEXEC */ /* ... */ void __init platform_init(unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7) { /* ... */ #ifdef CONFIG_KEXEC ppc_md.machine_kexec_prepare = myplatform_kexec_prepare; ppc_md.machine_kexec = myplatform_kexec; #endif /* CONFIG_KEXEC */ /* ... */ } The kexec ppc kernel support has been heavily tested on the GameCube Linux port, and, as reported in the fastboot mailing list, it has been tested too on a Moto 82xx ppc by Rick Richardson. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: Eric Biederman <ebiederm@xmission.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ppc32: Add support for Freescale e200 (Book-E) coreKumar Gala2005-06-258-6/+179
|/ | | | | | | | | | | | The e200 core is a Book-E core (similar to e500) that has a unified L1 cache and is not cache coherent on the bus. The e200 core also adds a separate exception level for debug exceptions. Part of this patch helps to cleanup a few cases that are true for all Freescale Book-E parts, not just e500. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Kill embedded system.map, use kallsymsBenjamin Herrenschmidt2005-06-211-7/+0
| | | | | | | | | | | | | This patch kills the whole embedded System.map mecanism and the bootloader-passed System.map that was used to provide symbol resolution in xmon. Instead, xmon now uses kallsyms like ppc64 does. No hurry getting that in Linus tree, let it be tested in -mm for a while first and make sure it doesn't break various embedded configs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: don't recursively crash in die() on CHRP/PReP machinesJakub Bogusz2005-06-211-2/+4
| | | | | | | | | | | | This patch avoids recursive crash (leading to kernel stack overflow) in die() on CHRP/PReP machines when CONFIG_PMAC_BACKLIGHT=y. set_backlight_* functions are placed in pmac section, which is discarded when _machine != _MACH_Pmac. Signed-off-by: Jakub Bogusz <qboosh@pld-linux.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Factor out common exception code into macro's for 4xx/Book-EKumar Gala2005-06-212-171/+87
| | | | | | | | | | 4xx and Book-E PPC's have several exception levels. The code to handle each level is fairly regular. Turning the code into macro's will ease the handling of future exception levels (debug) in forth coming chips. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: fix CONFIG_TASK_SIZE handling on 40xMatt Porter2005-06-211-6/+9
| | | | | | | | | | This patch is virtually identical to my previous 44x one. It removes 0x8000'0000 TASK_SIZE hardcoded assumption from head_4xx.S. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Converted MPC10X bridge to use platform devices instead of OCPKumar Gala2005-06-211-2/+2
| | | | | | | | | | Converted the MPC10x bridge support (used by MPC10x and 8240/1/5) to used the standard platform device model. Signed-off-by: Matt McClintock <msm@freescale.com> Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Added support for new MPC8548 family of PowerQUICC III processorsKumar Gala2005-06-211-0/+14
| | | | | | | | | Added descriptions of the new MPC8548 family processors, e500 core and peripherals. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Driver Core: arch: update device attribute callbacksYani Ioannou2005-06-201-1/+1
| | | | | Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.gitDavid Woodhouse2005-06-182-3/+14
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| * ppc: remove two extraneous descriptors for the 405EP CPULinus Torvalds2005-06-101-22/+0
| | | | | | | | | | | | | | The patch to add them keeps on getting applied, over and over again ;) Hopefully no more.
| * [PATCH] ppc32: add 405EP cpu_spec entryEugene Surovegin2005-06-091-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6 transition. Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage for unified caches") triggered this bug and 405EP boards don't boot anymore. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] ppc32: add 405EP cpu_spec entryEugene Surovegin2005-06-081-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6 transition. Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage for unified caches") triggered this bug and 405EP boards don't boot anymore. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] ppc32: add 405EP cpu_spec entryEugene Surovegin2005-06-071-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6 transition. Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage for unified caches") triggered this bug and 405EP boards don't boot anymore. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] ppc32: Fix incorrect CPU_FTR fixup usage for unified cachesKumar Gala2005-06-061-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | Runtime feature support for unified caches was testing a userland feature flag (PPC_FEATURE_UNIFIED_CACHE) instead of a cpu feature flag (CPU_FTR_SPLIT_ID_CACHE). Luckily the current defined bit mask for cpu features and userland features do not overlap so this only causes an issue on machines with a unified cache, which is extremely rare on PPC today. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.gitDavid Woodhouse2005-06-024-14/+25
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| * [PATCH] ppc32: Simplified load string emulation error checkingKumar Gala2005-05-281-6/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The error checking for emulation of load string instructions was overly generous and would cause certain valid forms of the instructions to be treated as illegal. We drop the range checking since the architecture allows this to be boundedly undefined. Tests on CPUs that support these instructions appear not do cause illegal instruction traps on range errors and just allow the execution to occur. Thanks to Kim Phillips for debugging this and figuring out what real HW was doing. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] ppc32: Fix some minor issues related to FSL Book-E KGDB supportKumar Gala2005-05-281-1/+14
| | | | | | | | | | | | | | | | | | | | | | Some debug registers needed to be initialized early on to allow proper support for KGDB. Additionally, we need to setup the ppc.md_early_serial_map function pointer on boards that have serial support for KGDB. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] ppc32: fix CONFIG_TASK_SIZE handling on 44xMatt Porter2005-05-201-6/+9
| | | | | | | | | | | | | | | | | | | | | | This patch fixed CONFIG_TASK_SIZE handling on 44x. Currently head_44x.S hardcodes 0x80000000, which breaks if user chooses to change TASK_SIZE (e.g. for 3G user-space). Tested on Ocotea in 3G/1G configuration. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] ppx32: Fix uninitialized variable in set_preferred_consolePaul Mackerras2005-05-201-1/+1
| | | | | | | | | | | | | | | | | | This fixes an uninitialized variable warning in arch/ppc/kernel/setup.c, and this time gcc is actually right, there is a path that could result in offset being uninitialized. Zero is a sane default in this instance. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.gitDavid Woodhouse2005-05-191-0/+2
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| * [PATCH] ppc32: enable use of early_paramPaul Mackerras2005-05-171-0/+2
| | | | | | | | | | | | | | | | | | We need to call parse_early_param() early on to allow usage of early_param() for command line parsing. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Add CONFIG_AUDITSC and CONFIG_SECCOMP support for ppc32David Woodhouse2005-05-083-13/+45
|/ | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [PATCH] ppc32: Simplified PPC core revision reportKumar Gala2005-05-051-19/+18
| | | | | | | | | | | We can identify new Freescale PPC cores by the fact that the MSB of the PVR is set. If we are a new Freescale core the decode of major/minor revision numbers is simplified so we dont have to add new case checks for a every new Freescale core. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: platform-specific functions missing from kallsyms.David Woodhouse2005-05-051-0/+2
| | | | | | | | | | | | | | | The PPC32 kernel puts platform-specific functions into separate sections so that unneeded parts of it can be freed when we've booted and actually worked out what we're running on today. This makes kallsyms ignore those functions, because they're not between _[se]text or _[se]inittext. Rather than teaching kallsyms about the various pmac/chrp/etc sections, this patch adds '_[se]extratext' markers for kallsyms. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] convert that currently tests _NSIG directly to use valid_signal()Jesper Juhl2005-05-011-2/+3
| | | | | | | | | Convert most of the current code that uses _NSIG directly to instead use valid_signal(). This avoids gcc -W warnings and off-by-one errors. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Fix address checking on lmw/stmw align exceptionPaul Mackerras2005-05-011-0/+4
| | | | | | | | | | The handling of misaligned load/store multiple instructions did not check to see if the address was ok to access before using __{get,put}_user(). Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: refactor FPU exception handlingPaul Mackerras2005-05-0110-176/+223
| | | | | | | | | | | | | | | Moved common FPU exception handling code out of head.S so it can be used by several of the sub-architectures that might of a full PowerPC FPU. Also, uses new CONFIG_PPC_FPU define to fix alignment exception handling for floating point load/store instructions to only occur if we have a hardware FPU. Signed-off-by: Jason McMullan <jason.mcmullan@timesys.com> Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Fix errata for some G3 CPUsBenjamin Herrenschmidt2005-05-011-6/+36
| | | | | | | | | | | | | | Some G3 CPUs can crash in funny way if a store from an FPU register instruction is executed on a register that has never been initialized since power on. This patch fixes it by making sure all FP registers have been properly initialized at kernel boot and when waking from sleep. It also makes the code that decides wether HID0_BTIC and HID0_DPM are allowed on a given CPU smarter (it can actually _clear_ them now if they are not allowed instead of just setting them when they are allowed in case the firmware got them wrong) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc user annotations: debug_setconetext(2)Al Viro2005-04-251-1/+1
| | | | | | | 3rd argument of sys_debug_setcontext() is also a userland pointer. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc sparse annotations: emulate_string_inst()Al Viro2005-04-251-1/+1
| | | | | | | | | replaced declaration of EA from u32 to unsigned long - this beast is used only to cast it to (userland) pointer and proper integer type for that is unsigned long. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc iomem annotations: ->io_base_virtAl Viro2005-04-251-1/+1
| | | | | | | | | | | | | | | * ->io_base_virt in struct pci_controller is iomem pointer. Marked as such. Most of the places that used it are already annotated to expect iomem. * places that did gratitious (and wrong) casts a-la isa_io_base = (unsigned long)ioremap(...); hose->io_base_virt = (void *)isa_io_base; turned into hose->io_base_virt = ioremap(...); isa_io_base = (unsigned long)hose->io_base_virt; * pci_bus_io_base() annotated as returning iomem pointer. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc user annotations: sigcontextAl Viro2005-04-251-1/+1
| | | | | | | sigcontext.regs is a userland pointer Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: fix compilation error in arch/ppc/kernel/time.cBenoit Boissinot2005-04-161-2/+0
| | | | | | | | | | | | | | | make defconfig give the following error on ppc (gcc-4): arch/ppc/kernel/time.c:92: error: static declaration of ‘time_offset’ follows non-static declaration include/linux/timex.h:236: error: previous declaration of ‘time_offset’ was here The following patch solves it (time_offset is declared in timer.c). Signed-Off-By: Benoit Boissinot <benoit.boissinot@ens-lyon.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Fix a problem with NTP on !(chrp||gemini)Giovambattista Pulcini2005-04-161-1/+0
| | | | | | | | | | | | | | | | The following problem was found by Giovambattista Pulcini <gpulcini@swintel.it>, who also provided a partial patch, and this has been verified by our time guru Gabriel Paubert <paubert@iram.es>. The problem is that in do_settimeofday() we always set time_state to TIME_ERROR and except on two platforms, never re-set it. This meant that ntp_gettime() and ntp_adjtime() always returned TIME_ERROR, incorrectly. Based on Gabriel's analysis, time_state is used for leap-second processing, and ppc shouldn't be mucking with it. Signed-off-by: Tom Rini <trini@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Support 36-bit physical addressing on e500Kumar Gala2005-04-161-40/+73
| | | | | | | | | | | | | | | | | | | | | | | | To add support for 36-bit physical addressing on e500 the following changes have been made. The changes are generalized to support any physical address size larger than 32-bits: * Allow FSL Book-E parts to use a 64-bit PTE, it is 44-bits of pfn, 20-bits of flags. * Introduced new CPU feature (CPU_FTR_BIG_PHYS) to allow runtime handling of updating hardware register (SPRN_MAS7) which holds the upper 32-bits of physical address that will be written into the TLB. This is useful since not all e500 cores support 36-bit physical addressing. * Currently have a pass through implementation of fixup_bigphys_addr * Moved _PAGE_DIRTY in the 64-bit PTE case to free room for three additional storage attributes that may exist in future FSL Book-E cores and updated fault handler to copy these bits into the hardware TLBs. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: fix single-stepping of emulated instructionsPaul Mackerras2005-04-161-0/+1
| | | | | | | | | | | | On ppc, we emulate instructions that cause alignment exceptions. If we are single-stepping an instruction and it causes an alignment exception, we will currently do the next instruction as well before taking the single-step exception. This patch fixes that, so we take the single-step exception after emulating the instruction. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: oops on kernel altivec assist exceptionsPaul Mackerras2005-04-161-0/+7
| | | | | | | | | | | | | | | If we should happen to get an altivec assist exception while executing in the kernel, we will currently try to handle it and fail, and end up oopsing with (apparently) a segfault. (An altivec assist exception occurs for floating-point altivec instructions with denormalized inputs or outputs if the altivec unit is in java mode.) This patch checks explicitly if we are in user mode and prints a useful message if not. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: fix bogosity in process-freezing codePaul Mackerras2005-04-161-3/+1
| | | | | | | | | | | The code that went into arch/ppc/kernel/signal.c recently to handle process freezing seems to contain a dubious assumption: that a process that calls do_signal when PF_FREEZE is set will have entered the kernel because of a system call. This patch removes that assumption. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-1645-0/+22654
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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