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| * [POWERPC] Make clockevents work on PPC601 processorsPaul Mackerras2007-10-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In testing the new clocksource and clockevent code on a PPC601 processor, I discovered that the clockevent multiplier value for the decrementer clockevent was overflowing. Because the RTCL register in the 601 effectively counts at 1GHz (it doesn't actually, but it increases by 128 every 128ns), and the shift value was 32, that meant the multiplier value had to be 2^32, which won't fit in an unsigned long on 32-bit. The same problem would arise on any platform where the timebase frequency was 1GHz or more (not that we actually have any such machines today). This fixes it by reducing the shift value to 16. Doing the calculations with a resolution of 2^-16 nanoseconds (15 femtoseconds) should be quite adequate. :) Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Prevent decrementer clockevents from firing earlyPaul Mackerras2007-10-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On old powermacs, we sometimes set the decrementer to 1 in order to trigger a decrementer interrupt, which we use to handle an interrupt that was pending at the time when it was re-enabled. This was causing the decrementer clock event device to call the event function for the next event early, which was causing problems when high-res timers were not enabled. This fixes the problem by recording the timebase value at which the next event should occur, and checking the current timebase against the recorded value in timer_interrupt. If it isn't time for the next event, it just reprograms the decrementer and returns. This also subtracts 1 from the value stored into the decrementer, which is appropriate because the decrementer interrupts on the transition from 0 to -1, not when the decrementer reaches 0. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Fix performance monitor on machines with logical PVRPaul Mackerras2007-10-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some IBM machines supply a "logical" PVR (processor version register) value in the device tree in the cpu nodes rather than the real PVR. This is used for instance to indicate that the processors in a POWER6 partition have been configured by the hypervisor to run in POWER5+ mode rather than POWER6 mode. To cope with this, we call identify_cpu a second time with the logical PVR value (the first call is with the real PVR value in the very early setup code). However, POWER5+ machines can also supply a logical PVR value, and use the same value (the value that indicates a v2.04 architecture compliant processor). This causes problems for code that uses the performance monitor (such as oprofile), because the PMU registers are different in POWER6 (even in POWER5+ mode) from the real POWER5+. This change works around this problem by taking out the PMU information from the cputable entries for the logical PVR values, and changing identify_cpu so that the second call to it won't overwrite the PMU information that was established by the first call (the one with the real PVR), but does update the other fields. Specifically, if the cputable entry for the logical PVR value has num_pmcs == 0, none of the PMU-related fields get used. So that we can create a mixed cputable entry, we now make cur_cpu_spec point to a single static struct cpu_spec, and copy stuff from cpu_specs[i] into it. This has the side-effect that we can now make cpu_specs[] be initdata. Ultimately it would be good to move the PMU-related fields out to a separate structure, pointed to by the cputable entries, and change identify_cpu so that it saves the PMU info pointer, copies the whole structure, and restores the PMU info pointer, rather than identify_cpu having to list all the fields that are *not* PMU-related. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * [POWERPC] iSeries: Move detection of virtual cdromsStephen Rothwell2007-10-11
| | | | | | | | | | | | | | | | | | | | Now we will only have entries in the device tree for the actual existing devices (including their OS/400 properties). This way viocd.c gets all the information about the devices from the device tree. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Remove more iSeries-specific stuff from vio.cStephen Rothwell2007-10-11
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Remove iSeries_vio_devStephen Rothwell2007-10-11
| | | | | | | | | | | | | | | | | | | | It was only being used to carry around dma_iommu_ops and vio_iommu_table which we can use directly instead. This also means that vio_bus_device doesn't need to refer to them either. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Clean up vio.hStephen Rothwell2007-10-11
| | | | | | | | | | | | | | | | Remove vio_dma_ops declaration (since it no longer exists) and some unused fields from struct vio_driver. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Only call ppc_md.setup_arch() if it is providedGrant Likely2007-10-11
| | | | | | | | | | | | | | | | This allows platforms which don't have anything to do at setup_arch time (like a bunch of the 4xx platforms) to eliminate an empty setup_arch hook. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Disable vDSO support for ARCH=ppc where it's not implementedWolfgang Denk2007-10-11
| | | | | | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Align the sys_call_tableStephen Rothwell2007-10-11
| | | | | | | | | | | | | | | | | | | | | | | | Our _GLOBAL macro does a ".align 2" so the alignment is fine for 32 bit, but on 64 bit it is possible for it to end up only 4 byte aligned. I don't know if it matters, but it can't hurt to 8 byte align it. It also means that when we build with --emit_relocs, none of our 64 bit relocations are to misaligned places. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Use cache-inhibited large page bit from firmwarePaul Mackerras2007-10-09
| | | | | | | | | | | | | | | | | | | | | | | | Discussions with firmware architects have confirmed that the bit in the ibm,pa-features property that indicates support for cache-inhibited large (>= 64kB) page mappings does in fact mean that the hypervisor allows 64kB mappings to I/O devices. Thus we can now enable the code that tests that bit and sets our CPU_FTR_CI_LARGE_PAGE feature bit. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Prepare to remove of_platform_driver nameStephen Rothwell2007-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | | The name field of of_platform_driver is just copied into the included device_driver. By not overriding an already initialised device_driver name, we can convert the drivers over time to stop using the of_platform_driver name. Also we were not copying the owner field from of_platform_driver, so do the same with it. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Update .gitignore for new vdso generated filesKumar Gala2007-10-08
| | | | | | | | | | | | | | We now generate vdso[32,64].so.dbg as part of the build so add them to .gitignore Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * [POWERPC] Cleaned up whitespace in head_fsl_booke.SKumar Gala2007-10-04
| | | | | | | | Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * [POWERPC] 8xx: Move softemu8xx.c from arch/ppcScott Wood2007-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, Soft_emulate_8xx was called with no implementation, resulting in build failures whenever building 8xx without math emulation. The implementation is copied from arch/ppc to resolve this issue. However, this sort of minimal emulation is not a very good idea other than for compatibility with existing userspaces, as it's less efficient than soft-float and can mislead users into believing they have soft-float. Thus, it is made a configurable option, off by default. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * [POWERPC] 8xx: Work around CPU15 erratum.Scott Wood2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | The CPU15 erratum on MPC8xx chips can cause incorrect code execution under certain circumstances, where there is a conditional or indirect branch in the last word of a page, with a target in the last cache line of the next page. This patch implements one of the suggested workarounds, by forcing a TLB miss whenever execution crosses a page boundary. This is done by invalidating the pages before and after the one being loaded into the TLB in the ITLB miss handler. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * [POWERPC] 8xx: Fix CONFIG_PIN_TLB.Scott Wood2007-10-03
| | | | | | | | | | | | | | | | 1. Move CONSISTENT_START on 8xx so that it doesn't overlap the IMMR mapping. 2. The wrong register was being loaded into SPRN_MD_RPN. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * [POWERPC] Add early debug console for CPM serial ports.Scott Wood2007-10-03
| | | | | | | | | | | | | | | | | | This code assumes that the ports have been previously set up, with buffers in DPRAM. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * [PPC] Use cpu setup routines from cpu_setup_44x.S for ARCH=ppcPaul Mackerras2007-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8112753bb2c0045398c89d0647792b39805f6d40 made 44x in ARCH=powerpc builds use cpu setup routines in cpu_setup_44x.S, but didn't make a similar change for ARCH=ppc, and consequently the ARCH=ppc builds fail with undefined symbols (since both use the same cputable.c). This fixes it by including cpu_setup_44x.S in the ARCH=ppc builds, and by taking out the now-redundant FPU initialization in arch/ppc/kernel/head_44x.S. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] 4xx: 440EPx/GRx incorrect write to DDR SDRAM errata workaroundValentine Barshak2007-10-03
| | | | | | | | | | | | | | | | | | | | Add a workaround for PowerPC 440EPx/GRx incorrect write to DDR SDRAM errata. Data can be written to wrong address in SDRAM when write pipelining enabled on plb0. We disable it in the cpu_setup for these processors at early init. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * [POWERPC] 4xx: Move 440EP(x) FPU setup from head_44x to cpu_setup_4xxValentine Barshak2007-10-03
| | | | | | | | | | | | | | | | | | | | The PowerPC 440EP(x) FPU init is currently done in head_44x under ifdefs. Since we should support more then one board in the same kernel, we move FPU initialization code from head_44x to cpu_setup_44x and add cpu_setup callbacks for 440EP(x). Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * [POWERPC] 4xx: Introduce cpu_setup functionality to 44x platformValentine Barshak2007-10-03
| | | | | | | | | | | | | | | | | | | | | | This adds cpu_setup functionality for ppc44x platform. Low level cpu-spefic initialization routines should be placed in cpu_setup_44x.S and a callback should be added to cputable. The cpu_setup is invoked by identify_cpu() function at early init. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * [POWERPC] Enable tickless idle and high res timers for powerpcTony Breeds2007-10-03
| | | | | | | | | | Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Implement clockevents driver for powerpcTony Breeds2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | This registers a clock event structure for the decrementer and turns on CONFIG_GENERIC_CLOCKEVENTS, which means that we now don't need most of timer_interrupt(), since the work is done in generic code. For secondary CPUs, their decrementer clockevent is registered when the CPU comes up (the generic code automatically removes the clockevent when the CPU goes down). Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * Merge branch 'linux-2.6' into for-2.6.24Paul Mackerras2007-10-03
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| * | [POWERPC] Use alloc_maybe_bootmem() in pcibios_alloc_controllerLinas Vepstas2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | Use alloc_maybe_bootmem() which wraps the if (mem_init_done) malloc clause. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] ibmebus: More descriptive error return code in ibmebus_store_probe()Joachim Fenkes2007-10-03
| | | | | | | | | | | | | | | Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] powerpc vDSO: install unstripped copies on diskRoland McGrath2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This keeps an unstripped copy of the vDSO images built before they are stripped and embedded in the kernel. The unstripped copies get installed in $(MODLIB)/vdso/ by "make install". These files can be useful when they contain source-level debugging information. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] ppc64: support CONFIG_DEBUG_PREEMPTHugh Dickins2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add CONFIG_DEBUG_PREEMPT support to ppc64: it was useful for testing get_paca() preemption. Cheat a little, just use debug_smp_processor_id() in the debug version of get_paca(): it contains all the right checks and reporting, though get_paca() doesn't really use smp_processor_id(). Use local_paca for what might have been called __raw_get_paca(). Silence harmless warnings from io.h and lparcfg.c with local_paca - it is okay for iseries_lparcfg_data to be referencing shared_proc with preemption enabled: all cpus should show the same value for shared_proc. Why do other architectures need TRACE_IRQFLAGS_SUPPORT for DEBUG_PREEMPT? I don't know, ppc64 appears to get along fine without it. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Limit range of __init_ref_ok somewhatStephen Rothwell2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | This patch introduces zalloc_maybe_bootmem and uses it so that we don't have to mark a whole (largish) routine as __init_ref_ok. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Make instruction dumping work in real modeScott Wood2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On non-book-E, exceptions execute in real mode. If a fault happens that leads to a register dump, the kernel currently prints XXXXXXXX because it doesn't realize that PC is a physical address. This patch checks whether instruction address translation is turned on, and if not converts PC into a virtual address. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix pci domain detectionArnd Bergmann2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The /proc/bus/pci/* files list PCI domain numbers only for devices that claim to be on a multi-domain system. The check for this is broken on powerpc, because the buid value is truncated to 32 bits. There is at least one machine (IBM QS21) that only uses the high-order bits of the buid, so the return value of pci_proc_domain() ends up being always zero, which makes /proc/bus/pci useless. Change the logic to always return '1' for a nonzero buid value. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Add CHECK_FULL_REGS in several places in ptrace codeRoland McGrath2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This restores the CHECK_FULL_REGS sanity check to every place that can access the nonvolatile GPRs for ptrace. This is already done for native-bitwidth PTRACE_PEEKUSR, but was omitted for many other cases (32-bit ptrace, PTRACE_GETREGS, etc.); I think there may have been more uniform checks before that were lost in the recent cleanup of GETREGS et al. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Make vio_bus_type staticStephen Rothwell2007-10-03
| | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Simplify vio_bus_init a little for legacy iSeriesStephen Rothwell2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | iSeries_vio_dev was already statically initialised and we can remove one set of #ifdef CONFIG_PPC_ISERIES guards. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Remove debug printk from vio_bus_initStephen Rothwell2007-10-03
| | | | | | | | | | | | | | | | | | | | | As it just adds noise to the boot messages. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Implement generic time of day clocksource for powerpcTony Breeds2007-10-03
| | | | | | | | | | | | | | | Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Implement {read,update}_persistent_clockTony Breeds2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | With these functions implemented we cooperate better with the generic timekeeping code. This obsoletes the need for the timer sysdev as a bonus. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Create and use CONFIG_WORD_SIZEStephen Rothwell2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | Linus made this suggestion for the x86 merge and this starts the process for powerpc. We assume that CONFIG_PPC64 implies CONFIG_PPC_MERGE and CONFIG_PPC_STD_MMU_32 implies CONFIG_PPC_STD_MMU. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Separate out legacy machine check exception parsersOlof Johansson2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move out the old-style exception parsers to a separate function, and don't call it on platforms that have a platform-specific handler. It would make sense to move out the generic versions into their platforms instead, but that can be done gradually down the road. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] clk.h interface for platformsDomen Puncer2007-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This provides an implementation of the <linux/clk.h> interface for arch/powerpc using a set of function pointers in clk_functions. Platforms that want to support this interface should fill clk_functions and select CONFIG_PPC_CLOCK in Kconfig. Signed-off-by: Domen Puncer <domen.puncer@telargo.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix build errors when BLOCK=nEmil Medve2007-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These are the symptom error messages: CC arch/powerpc/kernel/setup_32.o In file included from include/linux/blkdev.h:17, from include/linux/ide.h:13, from arch/powerpc/kernel/setup_32.c:13: include/linux/bsg.h:67: warning: 'struct request_queue' declared inside parameter list include/linux/bsg.h:67: warning: its scope is only this definition or declaration, which is probably not what you want include/linux/bsg.h:71: warning: 'struct request_queue' declared inside parameter list In file included from arch/powerpc/kernel/setup_32.c:13: include/linux/ide.h:857: error: field 'wrq' has incomplete type CC arch/powerpc/kernel/ppc_ksyms.o In file included from include/linux/blkdev.h:17, from include/linux/ide.h:13, from arch/powerpc/kernel/ppc_ksyms.c:15: include/linux/bsg.h:67: warning: 'struct request_queue' declared inside parameter list include/linux/bsg.h:67: warning: its scope is only this definition or declaration, which is probably not what you want include/linux/bsg.h:71: warning: 'struct request_queue' declared inside parameter list In file included from arch/powerpc/kernel/ppc_ksyms.c:15: include/linux/ide.h:857: error: field 'wrq' has incomplete type The fix tries to use the smallest scope CONFIG_* symbols that will fix the build problem. In this case <linux/ide.h> needs to be included only if IDE=y or IDE=m were selected. Also, ppc_ide_md is needed only if BLK_DEV_IDE=y or BLK_DEV_IDE=m Moved the EXPORT_SYMBOL(ppc_ide_md) from ppc_ksysms.c next to its declaration in setup_32.c which made <linux/ide.h> not needed. With <linux/ide.h> gone from ppc_ksyms.c, <asm/cacheflush.h> is needed to address the following warnings and errors: CC arch/powerpc/kernel/ppc_ksyms.o arch/powerpc/kernel/ppc_ksyms.c:122: error: '__flush_icache_range' undeclared here (not in a function) arch/powerpc/kernel/ppc_ksyms.c:122: warning: type defaults to 'int' in declaration of '__flush_icache_range' arch/powerpc/kernel/ppc_ksyms.c:123: error: 'flush_dcache_range' undeclared here (not in a function) arch/powerpc/kernel/ppc_ksyms.c:123: warning: type defaults to 'int' in declaration of 'flush_dcache_range' Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Avoid pointless WARN_ON(irqs_disabled()) from panic codepathSatyam Sharma2007-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | > ------------[ cut here ]------------ > Badness at arch/powerpc/kernel/smp.c:202 comes when smp_call_function_map() has been called with irqs disabled, which is illegal. However, there is a special case, the panic() codepath, when we do not want to warn about this -- warning at that time is pointless anyway, and only serves to scroll away the *real* cause of the panic and distracts from the real bug. * So let's extract the WARN_ON() from smp_call_function_map() into all its callers -- smp_call_function() and smp_call_function_single() * Also, introduce another caller of smp_call_function_map(), namely __smp_call_function() (and make smp_call_function() a wrapper over this) which does *not* warn about disabled irqs * Use this __smp_call_function() from the panic codepath's smp_send_stop() We also end having to move code of smp_send_stop() below the definition of __smp_call_function(). Signed-off-by: Satyam Sharma <satyam@infradead.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Add 64-bit resources support to pci_iomapValentine Barshak2007-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | The patch adds support for the 64-bit resources to the PCI iomap code. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * | [POWERPC] 4xx: Implement udbg_getc() for 440Hollis Blanchard2007-09-19
| | | | | | | | | | | | | | | | | | | | | | | | Implement udbg_getc() for 440, which fixes xmon input. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * | Merge branch 'linux-2.6'Paul Mackerras2007-09-20
| |\ \
| * | | [POWERPC] FWNMI is only used on pSeriesStephen Rothwell2007-09-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This saves 4k on non pSeries builds (except for iSeries where it saves almost 4k). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Size swapper_pg_dir correctlyStephen Rothwell2007-09-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | David Gibson pointed out that swapper_pg_dir actually need to be PGD_TABLE_SIZE bytes long not PAGE_SIZE. This actually saves 64k in the bss for a kernel ppc64_defconfig built with CONFIG_PPC_64K_PAGES. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Remove cmd_line from head*.SStephen Rothwell2007-09-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | It is just a C char array, so declare it thusly. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Fix section mismatch in PCI codeStephen Rothwell2007-09-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create a helper function (alloc_maybe_bootmem) that is marked __init_refok to limit the chances of mistakenly referring to other __init routines. WARNING: vmlinux.o(.text+0x2a9c4): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.update_dn_pci_info' and '.pci_dn_reconfig_notifier') WARNING: vmlinux.o(.text+0x36430): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.mpic_msi_init_allocator' and '.find_ht_magic_addr') WARNING: vmlinux.o(.text+0x5e804): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') WARNING: vmlinux.o(.text+0x5e8e8): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') WARNING: vmlinux.o(.text+0x5e968): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-28 01:04:51 +0000