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* [PATCH] Mark TSC on GeodeLX reliableMarcelo Tosatti2007-02-161-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | The Geode can safely use the TSC for highres, since: 1) Does not support frequency scaling, 2) The TSC _does_ count when the CPU is halted. Furthermore, the Geode supports a mode called "suspension on halt", where Suspend mode (which interacts with the power management states) is entered. TSC counting during suspend mode is controlled by bit 8 of the Bus Controller Configuration Register #0 (thanks Tom!). 3) no SMP :) Check if "RTSC counts during suspension" and remove the requirement for verification, so the clocksource code can safely select it as an timesource for the highres timers subsystem. Signed-off-by: Marcelo Tosatti <marcelo@kvack.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] clocksource: Add verification (watchdog) helperThomas Gleixner2007-02-161-2/+13
| | | | | | | | | | | | | | | The TSC needs to be verified against another clocksource. Instead of using hardwired assumptions of available hardware, provide a generic verification mechanism. The verification uses the best available clocksource and handles the usability for high resolution timers / dynticks of the clocksource which needs to be verified. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] clocksource: Remove the update callbackThomas Gleixner2007-02-161-2/+0
| | | | | | | | | | | | | The clocksource code allows direct updates of the rating of a given clocksource now. Change TSC unstable tracking to use this interface and remove the update callback. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] clocksource: replace is_continuous by a flag fieldThomas Gleixner2007-02-161-2/+8
| | | | | | | | | | | | | Using a flag filed allows to encode more than one information into a variable. Preparatory patch for the generic clocksource verification. [mingo@elte.hu: convert vmitime.c to the new clocksource flag] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] x86: rewrite SMP TSC sync codeIngo Molnar2007-02-164-75/+68
| | | | | | | | | | | | | | | | | | | | | | make the TSC synchronization code more robust, and unify it between x86_64 and i386. The biggest change is the removal of the 'fix up TSCs' code on x86_64 and i386, in some rare cases it was /causing/ time-warps on SMP systems. The new code only checks for TSC asynchronity - and if it can prove a time-warp (if it can observe the TSC going backwards when going from one CPU to another within a critical section), then the TSC clock-source is turned off. The TSC synchronization-checking code also got moved into a separate file. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Simplify the registration of clocksourcesThomas Gleixner2007-02-161-3/+3
| | | | | | | | | | | | | | Enqueue clocksources in rating order to make selection of the clocksource easier. Also check the match with an user override at enqueue time. Preparatory patch for the generic clocksource verification. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] GTOD: persistent clock supportJohn Stultz2007-02-162-0/+4
| | | | | | | | | | | | | Persistent clock support: do proper timekeeping across suspend/resume. [bunk@stusta.de: cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Fix timeout overflow with jiffiesIngo Molnar2007-02-161-2/+2
| | | | | | | | | | | | | Prevent timeout overflow if timer ticks are behind jiffies (due to high softirq load or due to dyntick), by limiting the valid timeout range to MAX_LONG/2. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Uninline jiffies.h functionsIngo Molnar2007-02-161-201/+17
| | | | | | | | | | | | | | There are loads of fat functions hidden in jiffies.h. Uninline them. No code changes. [jeremy@goop.org: export fix] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] HZ free ntpjohn stultz2007-02-161-0/+7
| | | | | | | | | | | | Distangle the NTP update from HZ. This is necessary for dynamic tick enabled kernels. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Add a function to handle interrupt affinity settingThomas Gleixner2007-02-161-0/+10
| | | | | | | | | | | | | | | | | Provide funtions to: - check, whether an interrupt can set the affinity - pin the interrupt to a given cpu Necessary for the ability to setup clocksources more flexible (e.g. use the different HPET channels per CPU) [akpm@osdl.org: alpha build fix] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Add irq flag to disable balancing for an interruptThomas Gleixner2007-02-162-17/+28
| | | | | | | | | | | | | | | Add a flag so we can prevent the irq balancing of an interrupt. Move the bits, so we have room for more :) Necessary for the ability to setup clocksources more flexible (e.g. use the different HPET channels per CPU) Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ATA convert GSI to irq on ia64Zhang, Yanmin2007-02-151-0/+12
| | | | | | | | | | | If an ATA drive uses legacy mode, ata driver will choose 14 and 15 as the fixed irq number. On ia64 platform, such numbers are GSI and should be converted to irq vector. Below patch against kernel 2.6.20 fixes it. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: Add a host flag to indicate lack of IORDY capabilityAlan Cox2007-02-151-0/+1
| | | | | | | | | | | This is the first preparation to doing the !IORDY cases properly. Further diffs will then add the needed logic to do it right. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: fix drive side 80c cable check, take 3Tejun Heo2007-02-151-1/+1
| | | | | | | | | | | The 80c wire bit is bit 13, not 14. Bit 14 is always 1 if word93 is implemented. This increases the chance of incorrect wire detection especially because host side cable detection is often unreliable and we sometimes soley depend on drive side cable detection. Fix the test and add word93 validity check. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2007-02-1528-340/+143
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (35 commits) sh: rts7751r2d board updates. sh: Kill off dead bigsur and ec3104 boards. sh: Fixup r7780rp pata_platform for devres conversion. sh: Revert TLB miss fast-path changes that broke PTEA parts. sh: Compile fix for heartbeat consolidation. sh: heartbeat consolidation for banked LEDs. sh: define dma noncoherent API functions. sh: Missing flush_dcache_all() proto in cacheflush.h. sh: Kill dead/unused ISA code from __ioremap(). sh: Add cpu-features header to asm/Kbuild. sh: Move __KERNEL__ up in asm/page.h. sh: Fix syscall numbering breakage. sh: dcache write-back for R7780RP PIO. sh: Switch to local TLB flush variants in additional callsites. sh: Local TLB flushing variants for SMP prep. sh: Fixup cpu_data references for the non-boot CPUs. sh: Use a per-cpu ASID cache. sh: add SH_CLK_MD Kconfig default. sh: Fixup SHMIN INTC register definitions. sh: SH-DMAC compile fixes ...
| * sh: rts7751r2d board updates.Paul Mundt2007-02-153-5/+9
| | | | | | | | | | | | | | | | This tidies up some of the rts7751r2d mess and gets it booting again. Update the defconfig, too. Signed-off-by: Masayuki Hosokawa <hosokawa@ace-jp.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Kill off dead bigsur and ec3104 boards.Paul Mundt2007-02-149-243/+0
| | | | | | | | | | | | | | | | Neither of these have had any maintenance in years, and there's no interest in keeping them straggling along. These have already been slated for removal some time, so finally just get rid of them. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Revert TLB miss fast-path changes that broke PTEA parts.Paul Mundt2007-02-141-1/+1
| | | | | | | | | | | | | | | | This ended up causing problems for older parts (particularly ones using PTEA). Revert this for now, it can be added back in once it's had some more testing. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: define dma noncoherent API functions.Paul Mundt2007-02-131-0/+4
| | | | | | | | | | | | sh was missing these, too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Missing flush_dcache_all() proto in cacheflush.h.Paul Mundt2007-02-131-0/+1
| | | | | | | | | | | | Some boards need this, so provide a definition. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Add cpu-features header to asm/Kbuild.Paul Mundt2007-02-131-0/+2
| | | | | | | | | | | | | | | | This is used by the libc for parsing CPU capability flags passed via the ELF auxvt, needed for run-time selection of atomic opcodes amongst other things. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Move __KERNEL__ up in asm/page.h.Paul Mundt2007-02-131-1/+2
| | | | | | | | | | | | | | This was breaking the uClibc build, which triggered the bogus page size error. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Fix syscall numbering breakage.Paul Mundt2007-02-131-9/+9
| | | | | | | | | | | | We accidentally broke the inotify syscalls, fix those up again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Local TLB flushing variants for SMP prep.Paul Mundt2007-02-131-7/+31
| | | | | | | | | | | | | | Rename the existing flush routines to local_ variants for use by the IPI-backed global flush routines on SMP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Fixup cpu_data references for the non-boot CPUs.Paul Mundt2007-02-133-6/+7
| | | | | | | | | | | | | | There are a lot of bogus cpu_data-> references that only end up working for the boot CPU, convert these to current_cpu_data to fixup SMP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Use a per-cpu ASID cache.Paul Mundt2007-02-133-38/+44
| | | | | | | | | | | | | | | | Previously this was implemented using a global cache, cache this per-CPU instead and bump up the number of context IDs to match NR_CPUS. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: SH-DMAC compile fixesManuel Lauss2007-02-131-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch does the following: - remove the make_ipr_irq stuff from dma-sh.c and replace it with a simple channel<->irq mapping table. - add DMTEx_IRQ constants for sh4 cpus - fix sh7751 DMAE irq number The SH7780 uses the same IRQs for DMA as other SH4 types, so I put the constants on top of the dma.h file. Other CPU types need to #define their own DMTEx_IRQ contants in their appropriate header. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Lazy dcache writeback optimizations.Paul Mundt2007-02-134-19/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This converts the lazy dcache handling to the model described in Documentation/cachetlb.txt and drops the ptep_get_and_clear() hacks used for the aliasing dcaches on SH-4 and SH7705 in 32kB mode. As a bonus, this slightly cuts down on the cache flushing frequency. With that and the PTEA handling out of the way, the update_mmu_cache() implementations can be consolidated, and we no longer have to worry about which configuration the cache is in for the SH7705 case. And finally, explicitly disable the lazy writeback on SMP (SH-4A). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: More tidying for large base pages.Paul Mundt2007-02-132-6/+14
| | | | | | | | | | | | | | | | There were a few more things that needed fixing up, namely THREAD_SIZE and the TLB miss handler where certain PTRS_PER_PGD == PTRS_PER_PTE assumptions were being made. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: syscall 300 should be __NR_fstatat64.SUGIOKA Toshinobu2007-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | syscall number 300 fails while testing with latest LTP (ltp-full-20061121.tgz) on sh. sys_fstatat64 is called on syscall 300 (see arch/sh/kernel/syscalls.S), and __ARCH_WANT_STAT64 is defined in include/asm-sh/unistd.h, so following patch seems correct. Signed-off-by: SUGIOKA Toshinobu <sugioka@itonet.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Use a jump call table for debug trap handlers.Paul Mundt2007-02-131-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This rips out most of the needlessly complicated sh_bios and kgdb trap handling, and forces it all through a common fast dispatch path. As more debug traps are inserted, it's important to keep them in sync for all of the parts, not just SH-3/4. As the SH-2 parts are unable to do traps in the >= 0x40 range, we restrict the debug traps to the 0x30-0x3f range on all parts, and also bump the kgdb breakpoint trap down in to this range (from 0xff to 0x3c) so it's possible to use for nommu. Optionally, this table can be padded out to catch spurious traps for SH-3/4, but we don't do that yet.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | Merge branch 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsaLinus Torvalds2007-02-142-2/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa: [ALSA] version 1.0.14rc2 [ALSA] Fix a typo in __dev* changes in portman2x4.c [ALSA] Change AT91 PDC register defines for 2.6.20 kernel [ALSA] SoC codecs - fix Kconfig - depends -> depends on [ALSA] Fix __devinit and __devexit issues with sound drivers [ALSA] hda-codec - Patch for enabling LFE on more Dell laptops [ALSA] hda-codec - More fixes for Conexant HD Audio support [ALSA] usb-audio: add PCR-A PCM support [ALSA] emu10k1: fix typo [ALSA] usbaudio - remove urb->bandwidth reference [ALSA] ac97 - Fix silent output problem with Cx20551 codec [ALSA] hda-codec - Fix Oops with probing sigmatel codec chips
| * | [ALSA] version 1.0.14rc2Jaroslav Kysela2007-02-141-1/+1
| | | | | | | | | | | | Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] emu10k1: fix typoClemens Ladisch2007-02-141-1/+1
| | | | | | | | | | | | | | | | | | | | | fix a typo Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* | | Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6Linus Torvalds2007-02-1436-130/+634
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (94 commits) [PATCH] x86-64: Remove mk_pte_phys() [PATCH] i386: Fix broken CONFIG_COMPAT_VDSO on i386 [PATCH] i386: fix 32-bit ioctls on x64_32 [PATCH] x86: Unify pcspeaker platform device code between i386/x86-64 [PATCH] i386: Remove extern declaration from mm/discontig.c, put in header. [PATCH] i386: Rename cpu_gdt_descr and remove extern declaration from smpboot.c [PATCH] i386: Move mce_disabled to asm/mce.h [PATCH] i386: paravirt unhandled fallthrough [PATCH] x86_64: Wire up compat epoll_pwait [PATCH] x86: Don't require the vDSO for handling a.out signals [PATCH] i386: Fix Cyrix MediaGX detection [PATCH] i386: Fix warning in cpu initialization [PATCH] i386: Fix warning in microcode.c [PATCH] x86: Enable NMI watchdog for AMD Family 0x10 CPUs [PATCH] x86: Add new CPUID bits for AMD Family 10 CPUs in /proc/cpuinfo [PATCH] i386: Remove fastcall in paravirt.[ch] [PATCH] x86-64: Fix wrong gcc check in bitops.h [PATCH] x86-64: survive having no irq mapping for a vector [PATCH] i386: geode configuration fixes [PATCH] i386: add option to show more code in oops reports ...
| * | | [PATCH] x86-64: Remove mk_pte_phys()Andi Kleen2007-02-131-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Convert last user to pfn_pte - Remove mk_pte_phys Suggested by Jan Beulich Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] i386: Remove extern declaration from mm/discontig.c, put in header.Rusty Russell2007-02-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Extern declarations belong in headers. Times, they are a'changin. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andi Kleen <ak@suse.de> ===================================================================
| * | | [PATCH] i386: Rename cpu_gdt_descr and remove extern declaration from smpboot.cRusty Russell2007-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When I implemented the DECLARE_PER_CPU(var) macros, I was careful that people couldn't use "var" in a non-percpu context, by prepending percpu__. I never considered that this would allow them to overload the same name for a per-cpu and a non-percpu variable. It is only one of many horrors in the i386 boot code, but let's rename the non-perpcu cpu_gdt_descr to early_gdt_descr (not boot_gdt_descr, that's something else...) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andi Kleen <ak@suse.de> ===================================================================
| * | | [PATCH] i386: Move mce_disabled to asm/mce.hRusty Russell2007-02-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allows external actors to disable mce. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andi Kleen <ak@suse.de> ===================================================================
| * | | [PATCH] x86: Don't require the vDSO for handling a.out signalsAndi Kleen2007-02-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | and in other strange binfmts. vDSO is not necessarily mapped there. Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] i386: Remove fastcall in paravirt.[ch]Andi Kleen2007-02-131-67/+67
| | | | | | | | | | | | | | | | | | | | | | | | Not needed because fastcall is always default now Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: Fix wrong gcc check in bitops.hAndi Kleen2007-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | gcc 5.0 will likely not have the constraint problem Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: update IO-APIC dest field to 8-bit for xAPICBenjamin Romer2007-02-131-12/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On the Unisys ES7000/ONE system, we encountered a problem where performing a kexec reboot or dump on any cell other than cell 0 causes the system timer to stop working, resulting in a hang during timer calibration in the new kernel. We traced the problem to one line of code in disable_IO_APIC(), which needs to restore the timer's IO-APIC configuration before rebooting. The code is currently using the 4-bit physical destination field, rather than using the 8-bit logical destination field, and it cuts off the upper 4 bits of the timer's APIC ID. If we change this to use the logical destination field, the timer works and we can kexec on the upper cells. This was tested on two different cells (0 and 2) in an ES7000/ONE system. For reference, the relevant Intel xAPIC spec is kept at ftp://download.intel.com/design/chipsets/e8501/datashts/30962001.pdf, specifically on page 334. Signed-off-by: Benjamin M Romer <benjamin.romer@unisys.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * | | [PATCH] x86: fix laptop bootup hang in init_acpi()Ingo Molnar2007-02-131-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During kernel bootup, a new T60 laptop (CoreDuo, 32-bit) hangs about 10%-20% of the time in acpi_init(): Calling initcall 0xc055ce1a: topology_init+0x0/0x2f() Calling initcall 0xc055d75e: mtrr_init_finialize+0x0/0x2c() Calling initcall 0xc05664f3: param_sysfs_init+0x0/0x175() Calling initcall 0xc014cb65: pm_sysrq_init+0x0/0x17() Calling initcall 0xc0569f99: init_bio+0x0/0xf4() Calling initcall 0xc056b865: genhd_device_init+0x0/0x50() Calling initcall 0xc056c4bd: fbmem_init+0x0/0x87() Calling initcall 0xc056dd74: acpi_init+0x0/0x1ee() It's a hard hang that not even an NMI could punch through! Frustratingly, adding printks or function tracing to the ACPI code made the hangs go away ... After some time an additional detail emerged: disabling the NMI watchdog made these occasional hangs go away. So i spent the better part of today trying to debug this and trying out various theories when i finally found the likely reason for the hang: if acpi_ns_initialize_devices() executes an _INI AML method and an NMI happens to hit that AML execution in the wrong moment, the machine would hang. (my theory is that this must be some sort of chipset setup method doing stores to chipset mmio registers?) Unfortunately given the characteristics of the hang it was sheer impossible to figure out which of the numerous AML methods is impacted by this problem. As a workaround i wrote an interface to disable chipset-based NMIs while executing _INI sections - and indeed this fixed the hang. I did a boot-loop of 100 separate reboots and none hung - while without the patch it would hang every 5-10 attempts. Out of caution i did not touch the nmi_watchdog=2 case (it's not related to the chipset anyway and didnt hang). I implemented this for both x86_64 and i686, tested the i686 laptop both with nmi_watchdog=1 [which triggered the hangs] and nmi_watchdog=2, and tested an Athlon64 box with the 64-bit kernel as well. Everything builds and works with the patch applied. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * | | [PATCH] x86-64: define dma noncoherent API functionsJeff Garzik2007-02-131-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | x86-64 is missing these: Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: Fix preprocessor conditionJosef 'Jeff' Sipek2007-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Old code was legal standard C, but apparently not sparse-C. Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu> Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: remove get_pmd()Jan Beulich2007-02-131-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Function is dead. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: Allow to run a program when a machine check event is detectedAndi Kleen2007-02-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a machine check event is detected (including a AMD RevF threshold overflow event) allow to run a "trigger" program. This allows user space to react to such events sooner. The trigger is configured using a new trigger entry in the machinecheck sysfs interface. It is currently shared between all CPUs. I also fixed the AMD threshold handler to run the machine check polling code immediately to actually log any events that might have caused the threshold interrupt. Also added some documentation for the mce sysfs interface. Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: Remove fastcall references in x86_64 codeGlauber de Oliveira Costa2007-02-132-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike x86, x86_64 already passes arguments in registers. The use of regparm attribute makes no difference in produced code, and the use of fastcall just bloats the code. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
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