summaryrefslogtreecommitdiff
path: root/arch/powerpc/kernel (follow)
Commit message (Collapse)AuthorAge
...
| | * [POWERPC] Oprofile support for Power 5++Mike Wolf2007-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a new oprofile cpu type for Power 5 revision 3 chips. The new name is ppc64/power5++ and is used so that the performance counters can be set up correctly. Signed-off-by: Mike Wolf <mjw@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Remove unnecessary #undef printk from prom.cMathieu Desnoyers2007-07-10
| | | | | | | | | | | | | | | | | | Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Check for NULL ppc_md.init_IRQ() before callingSonny Rao2007-07-10
| | | | | | | | | | | | | | | | | | | | | Check to make sure ppc_md.init_IRQ has been set before calling it. Signed-off-by: Sonny Rao <sonny@burdell.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exportsJohannes Berg2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | With !CONFIG_NUMA, these are static inlines in the header file so don't generate exports for them in that case. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Add __read_mostly support for powerpcTony Breeds2007-07-10
| | | | | | | | | | | | | | | Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more saneTony Breeds2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When booting a current kernel with CONFIG_PRINTK_TIME enabled you'll see messages like: [ 0.000000] time_init: decrementer frequency = 188.044000 MHz [ 0.000000] time_init: processor frequency = 1504.352000 MHz [3712914.436297] Console: colour dummy device 80x25 This cause by the initialisation of tb_to_ns_scale in time_init(), suddenly the multiplication in sched_clock() now does something :). This patch modifies sched_clock() to report the offset since the machine booted so the same printk's now look like: [ 0.000000] time_init: decrementer frequency = 188.044000 MHz [ 0.000000] time_init: processor frequency = 1504.352000 MHz [ 0.000135] Console: colour dummy device 80x25 Effectivly including the uptime in printk()s. This patch makes tb_to_ns_scale and tb_to_ns_shift static and read_mostly for good measure. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Make the debugfs "powerpc" dir globally accessibleMichael Ellerman2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The prom.c debugging code creates a "powerpc" directory in debugfs, which is nice, but doesn't allow any other debugging code to stick things under "powerpc" in debugfs. So make it global. While we're there we should make the prom.c debugging code depend on CONFIG_DEBUG_FS, because it doesn't work otherwise. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Add a check for keyboard/mouse device nodes in check_legacy_ioport()Wade Farnsworth2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The device tree for the MPC8641 HPCN does not implement the device type property for I8042 nodes. In addition to checking the I8042 node's device type, also match the keyboard and/or mouse nodes' compatible property. Signed-off-by: Wade Farnsworth <wfarnsworth@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Add a warning to help trackdown device_node refcounting bugsMichael Ellerman2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the refcount for a device node goes to 0, we call the destructor - of_node_release(). This should only happen if we've already detached the node from the device tree. So add a flag OF_DETACHED which tracks detached-ness, and if we find ourselves in of_node_release() without it set, issue a warning and don't free the device_node. To avoid warning continuously reinitialise the kref to a sane value. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Generalise device_node flag interfaceMichael Ellerman2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | The struct device_node currently has a _flags variable, although it's only used for one flag - OF_DYNAMIC. Generalise the flag accessors so we can use them with other flags in future. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Check for the root node in of_detach_node()Michael Ellerman2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | It's not sensible to call of_detach_node() on the root node, but we should check for it just to be safe. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Add cputable entry for PowerPC 440SPe Rev. BRoland Dreier2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding the cputable entry for 440SPe Rev. B, we also need to adjust the existing entries for 440SP Rev. A and 440SPe Rev. B so that they look more bits of the PVR. The 440SPe Rev. B has PVR 53421891, which would match the current 440SP Rev. A pattern of 53xxx891. To distinguish between 440SP and 440SPe, we need to use the first three digits of the PVR, which are respectively 532 and 534. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Remove unused do_signal exportChristoph Hellwig2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | do_signal is never used in modular code (obviously), and no other architecture exports it either. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Move inline asm eieio to using eieio inline functionKumar Gala2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | Use the eieio function so we can redefine what eieio does rather than direct inline asm. This is part code clean up and partially because not all PPCs have eieio (book-e has mbar that maps to eieio). Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Kill pcibios_enable_resources()Kumar Gala2007-07-03
| | | | | | | | | | | | | | | | | | pcibios_enable_resources isn't used anywhere and not exported. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Replace use of GET_64BIT(prop, i) with of_read_number().Jon Loeliger2007-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove uses of hack GET_64BIT() property macro and use the more general of_read_number() function from prom.h as suggested by Milton. Signed-off-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Add copyright header to pci-common.c based on pci_{32,64}.cKumar Gala2007-06-29
| | | | | | | | | | | | Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Use ppc64 style list management for pci_controller on ppc32Kumar Gala2007-06-29
| | | | | | | | | | | | | | | | | | | | | | | | Use the ppc64 style list management and allocation functions for pci_controllers. This makes the pci_controller structs just a bit more common between ppc32 & ppc64. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Move common PCI code out of pci_32/pci_64Kumar Gala2007-06-29
| | | | | | | | | | | | | | | | | | | | | Moved the low hanging fruit that was either identical or close to it between ppc32 & ppc64 for PCI into pci-common.c Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Move pci_bus_to_hose users to pci_bus_to_hostKumar Gala2007-06-29
| | | | | | | | | | | | | | | | | | | | | In the places we can move to using pci_bus_to_host, this allows us to make pci_bus_to_host static and remove its export. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Merge ppc32 and ppc64 pcibios_alloc_controller() prototypesKumar Gala2007-06-29
| | | | | | | | | | | | | | | | | | | | | Make the ppc32 pcibios_alloc_controller take a device node to match the ppc64 prototypes and have it set arch_data. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Use global_number in ppc32 pci_controllerKumar Gala2007-06-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | Make the pci_controller struct use global_number for the PHB domain number instead of index to match what ppc64 does and reuse its pci_domain_nr code. Introduced a pci-common.c to handle shared code between ppc32 & ppc64. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Removed dead code related to PCI on ppc32Kumar Gala2007-06-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are no in kernel users of any off these functions and some of them were not even EXPORT_SYMBOL: - pci_bus_io_base() - pci_bus_io_base_phys() - pci_bus_mem_base_phys() - pci_resource_to_bus() - phys_to_bus() - pci_phys_to_bus() - pci_bus_to_phys() - pci_init_resource() - resource_fixup() Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Let subordinate transparent bridges be transparent.York Sun2007-06-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In pcibios_fixup_bus(), bridges that are subordinate to transparent bridges were still relocating their IORESOURCE_IO and IO_RESOURCE_MEM start and end values. Fix this by preventing the transparent bridge from relocating the start and end values, thus allowing the subordinate non-transparent bridge full molestation rights. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| | * [POWERPC] Turn off debugging in arch/powerpc/kernel/pci_64.cMichael Ellerman2007-06-28
| | | | | | | | | | | | | | | | | | | | | | | | Commit 3d5134ee8341bffc4f539049abb9e90d469b448d left debugging turned on in arch/powerpc/kernel/pci_64.c. This turns it off again. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Move iSeries_tb_recal into its own late_initcall.Tony Breeds2007-06-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently iSeries will recalibrate the cputime_factors in the first settimeofday() call. It seems the reason for doing this is to ensure a resaonable time delta after time_init(). On current kernels (with udev), this call is made 40-60 seconds into the boot process, by moving it to a late initcall it is called approximately 5 seconds after time_init() is called. This is sufficient to recalibrate the timebase. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> CC: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Correct __secondary_hold commentGeoff Levand2007-06-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove references to pSeries and OpenFirmware in the __secondary_hold usage comment. __secondary_hold is a generic routine and can be used by other platforms. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Output params value in early_init_devtreeGeoff Levand2007-06-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add a printout of the params value to early_init_devtree. This value is handy to have for comparison when debugging the bootwrapper code. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Do firmware feature fixups after features are initialisedMichael Neuling2007-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On pSeries the firmware features are not setup until ppc_md.init_early, so we can't do the firmware feature sections fixups till after this. Currently firmware feature sections is only used on iSeries which inits the firmware features much earlier. This is a bug in waiting on pSeries. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Fix stolen time for SMT without LPARMichael Neuling2007-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For POWERPC, stolen time accounts for cycles lost to the hypervisor or PURR cycles attributed to the other SMT thread. Hence, when a PURR is available, we should still calculate stolen time, irrespective of being virtualised. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Add irq_create_direct_mapping()Michael Ellerman2007-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds irq_create_direct_mapping(). This routine is an alternative to irq_create_mapping(), for irq controllers that can use linux virq numbers directly as hardware numbers. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Split virq setup logic out into irq_setup_virq()Michael Ellerman2007-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A future patch will need the logic at the end of irq_create_mapping() which setups a virq and installs it in the irq_map. So split it out into a new function irq_setup_virq(). Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Uninline and export virq_to_hw()Olof Johansson2007-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Uninline virq_to_hw and export it so modules can use it. The alternative would be to export the irq_map array instead, but it's an infrequently called function, and keeping the array unexported seems considerably cleaner. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Remove spinlock from struct cpu_purr_dataNathan Lynch2007-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cpu_purr_data is a per-cpu array used to account for stolen time on partitioned systems. It used to be the case that cpus accessed each others' cpu_purr_data, so each entry was protected by a spinlock. However, the code was reworked ("Simplify stolen time calculation") with the result that each cpu accesses its own cpu_purr_data and not those of other cpus. This means we can get rid of the spinlock as long as we're careful to disable interrupts when accessing cpu_purr_data in process context. Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] kexec: Send slaves to new kernel earlierMilton Miller2007-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With this, when kexec-ing, we copy the code and start the slaves on their journey to the next kernel's spin loop as soon as we copy the kexec image into place. The kernel doesn't know exactly which slaves are spinning in kexec_wait. This allows us to pass more than max-cpus to the next kernel. But it also means that we might leave some behind. Moving the code here means they have the time it takes us to clear the hash table to wake up and move on. Moving the code any earlier would reuqire walking the image description to search for the code, which could span multiple pages. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Merge CPU features pertaining to icache coherencyDavid Gibson2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the powerpc kernel has a 64-bit only feature, COHERENT_ICACHE used for those CPUS which maintain icache/dcache coherency in hardware (POWER5, essentially). It also has a feature, SPLIT_ID_CACHE, which is used on CPUs which have separate i and d-caches, which is to say everything except 601 and Freescale E200. In nearly all the places we check the SPLIT_ID_CACHE, what we actually care about is whether the i and d-caches are coherent (which they will be, trivially, if they're the same cache). This tries to clarify the situation a little. The COHERENT_ICACHE feature becomes availble on 32-bit and is set for all CPUs where i and d-cache are effectively coherent, whether this is due to special logic (POWER5) or because they're unified. We check this, instead of SPLIT_ID_CACHE nearly everywhere. The SPLIT_ID_CACHE feature itself is replaced by a UNIFIED_ID_CACHE feature with reversed sense, set only on 601 and Freescale E200. In the two places (one Freescale BookE specific) where we really care whether it's a unified cache, not whether they're coherent, we check this feature. The CPUs with unified cache are so few, we could consider replacing this feature bit with explicit checks against the PVR. This will make unifying the 32-bit and 64-bit cache flush code a little more straightforward. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Remove the dregs of APUS support from arch/powerpcDavid Gibson2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | APUS (the Amiga Power-Up System) is not supported under arch/powerpc and it's unlikely it ever will be. Therefore, this patch removes the fragments of APUS support code from arch/powerpc which have been copied from arch/ppc. A few APUS references are left in asm-powerpc in .h files which are still used from arch/ppc. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Donate idle CPU cycles on dedicated partitionsJake Moilanen2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A Power6 can give up CPU cycles on a dedicated CPU (as opposed to a shared CPU) to other shared processors if the administrator asks for it (via the HMC). This enables that to work properly on P6. This just involves setting a bit in the CAS structure as well as the VPA. To donate cycles, a CPU has to have all SMT threads idle and have the donate bit set in the VPA. Then call H_CEDE. The reason why shared processors just aren't used is because dedicated CPUs are guaranteed an actual processor, yet the system is still able to increase the capacity of the shared CPU pool. Also rename the VPA's cpuctls_task_attrs field to a more accurate name. Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Less ifdef's in signal.c/signal.hBenjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves things around a little bit in the new common signal.c and signal.h files to remove the last #ifdef in the middle of the common do_signal(). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Remove #ifdef around set_dabr in signal codeBenjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | set_dabr() and thread.dabr exist on 32 bits as well nowadays (they actually may do something even, depending on what CPU you have). So this removes the ifdef. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Merge creation of signal frameBenjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code for creating signal frames was still duplicated and split in strange ways between 32 and 64 bits, including the SA_ONSTACK handling being in do_signal on 32 bits but inside handle_rt_signal on 64 bits etc... This moves the 64 bits get_sigframe() to the generic signal.c, cleans it a bit, moves the access_ok() call done by all callers to it as well, and adapts/cleanups the 3 different signal handling cases to use that common function. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Remove obsolete freezer bitsBenjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | The powerpc signal code still had some obsolete freezer bits that have long been removed from x86 (it's now done in generic code). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Consolidate do_signalChristoph Hellwig2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | do_signal has exactly the same behaviour on 32bit and 64bit and 32bit compat on 64bit for handling 32bit signals. Consolidate all these into one common function in signal.c. The only odd left over is the try_to_free in the 32bit version that no other architecture has in mainline (only in i386 for some odd SuSE release). We should probably get rid of it in a separate patch. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Consolidate restore_sigmaskChristoph Hellwig2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | restore_sigmask is exactly the same on 32 and 64bit, so move it to common code. Also move _BLOCKABLE to signal.h to avoid defining it multiple times. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Consolidate sys_sigaltstackChristoph Hellwig2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sys_sigaltstack is the same on 32bit and 64 and we can consolidate it to signal.c. The only difference is that the 32bit code uses ints for the unused register paramaters and 64bit unsigned long. I've changed it to unsigned long because it's the same width on 32bit. (I also wonder who came up with this awkward calling convention.. :)) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Make syscall restart code more commonBenjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves the code in signal_32.c and signal_64.c for handling syscall restart into a common signal.c file and converge around a single implementation that is based on the 32 bits one, using trap, ccr and r3 rather than the special "result" field for deciding what to do. The "result" field is now pretty much deprecated. We still set it for the sake of whatever might rely on it in userland but we no longer use it's content. This, along with a previous patch that enables ptracers to write to "trap" and "orig_r3" should allow gdb to properly handle syscall restarting. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Always apply DABR changes on context switchesBenjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the #ifdef CONFIG_PPC64 around setting the DABR. The actual setting of the SPR inside of the set_dabr() function is dependent on CONFIG_PPC64 || CONFIG_6xx but you can always provide a ppc_md hook to override that. We should improve support for different HW breakpoints facilities but this is a first step. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] powerpc: ptrace can set DABR on both 32 and 64 bitsBenjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | Allow ptrace to set dabr in the thread structure for both 32 and 64 bits, though only 64 bits actually uses that field, it's actually defined in both. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] ptrace shouldn't touch FP exec modeBenjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the gratuitous difference between 32 and 64-bit ptrace is whether you can whack the MSR:FE0 and FE1 bits from ptrace. This patch forbids it unconditionally. In addition, the 64-bit kernels used to return the exception mode in the MSR on reads, but 32-bit kernels didn't. This patch makes it return those bits on both. Finally, since ptrace-ppc32.h and ptrace-ppc64.h are mostly empty now, and since the previous patch made ptrace32.c no longer need the MSR_DEBUGCHANGE definition, we just remove those 2 files and move back the remaining bits to ptrace.c (they were short lived heh ?). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * [POWERPC] Allow ptrace write to pt_regs trap and orig_r3Benjamin Herrenschmidt2007-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch allows a ptracer to write to the "trap" and "orig_r3" words of the pt_regs. This, along with a subsequent patch to the signal restart code, should enable gdb to properly handle syscall restarting after executing a separate function (at least when there's no restart block). This patch also removes ptrace32.c code toying directly with the registers and makes it use the ptrace_get/put_reg() accessors for everything so that the logic for checking what is permitted is in only one place. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-28 05:20:27 +0000