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* [PATCH] CPU hotplug: call check_tsc_sync_source() with irqs offIngo Molnar2007-03-071-1/+4
| | | | | | | | | | | | | | | | check_tsc_sync_source() depends on being called with irqs disabled (it checks whether the TSC is coherent across two specific CPUs). This is incidentally true during bootup, but not during cpu hotplug __cpu_up(). This got found via smp_processor_id() debugging. disable irqs explicitly and remove the unconditional enabling of interrupts. Add touch_nmi_watchdog() to the cpu_online_map busy loop. this bug is present both on i386 and on x86_64. Reported-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] clocksource init adjustments (fix bug #7426)john stultz2007-03-053-70/+48Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch resolves the issue found here: http://bugme.osdl.org/show_bug.cgi?id=7426 The basic summary is: Currently we register most of i386/x86_64 clocksources at module_init time. Then we enable clocksource selection at late_initcall time. This causes some problems for drivers that use gettimeofday for init calibration routines (specifically the es1968 driver in this case), where durring module_init, the only clocksource available is the low-res jiffies clocksource. This may cause slight calibration errors, due to the small sampling time used. It should be noted that drivers that require fine grained time may not function on architectures that do not have better then jiffies resolution timekeeping (there are a few). However, this does not discount the reasonable need for such fine-grained timekeeping at init time. Thus the solution here is to register clocksources earlier (ideally when the hardware is being initialized), and then we enable clocksource selection at fs_initcall (before device_initcall). This patch should probably get some testing time in -mm, since clocksource selection is one of the most important issues for correct timekeeping, and I've only been able to test this on a few of my own boxes. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] x86_64: remove unusued 'flags' variableDavid Rientjes2007-03-051-1/+0Star
| | | | | | | | Removes unused 'flags' variable from setup_IO_APIC_irq(). Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] x86_64/i386 irq: Fix !CONFIG_SMP compilationEric W. Biederman2007-02-281-4/+0Star
| | | | | | | | | | | | | | | | | | | | | | When removing set_native_irq I missed the fact that it was called in a couple of places that were compiled even when SMP support is disabled. And since the irq_desc[].affinity field only exists in SMP things broke. Thanks to Simon Arlott <simon@arlott.org> for spotting this. There are a couple of ways to fix this but the simplest one is to just remove the assignments. The affinity field is only used to display a value to the user, and nothing on either i386 or x86_64 reads it or depends on it being any particlua value, so skipping the assignment is safe. The assignment that is being removed is just for the initial affinity value before the user explicitly sets it. The irq_desc array initializes this field to CPU_MASK_ALL so the field is initialized to a reasonable value in the SMP case without being set. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds2007-02-263-1/+2
|\ | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] constify some data tables. [CPUFREQ] constify cpufreq_driver where possible. {rd,wr}msr_on_cpu SMP=n optimization [CPUFREQ] cpufreq_ondemand.c: don't use _WORK_NAR rdmsr_on_cpu, wrmsr_on_cpu [CPUFREQ] Revert default on deprecated config X86_SPEEDSTEP_CENTRINO_ACPI
| * {rd,wr}msr_on_cpu SMP=n optimizationAdrian Bunk2007-02-201-1/+2
| | | | | | | | | | | | | | Let's save a few bytes in the CONFIG_SMP=n case. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Dave Jones <davej@redhat.com>
| * rdmsr_on_cpu, wrmsr_on_cpuAlexey Dobriyan2007-02-202-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was OpenVZ specific bug rendering some cpufreq drivers unusable on SMP. In short, when cpufreq code thinks it confined itself to needed cpu by means of set_cpus_allowed() to execute rdmsr, some "virtual cpu" feature can migrate process to anywhere. This triggers bugons and does wrong things in general. This got fixed by introducing rdmsr_on_cpu and wrmsr_on_cpu executing rdmsr and wrmsr on given physical cpu by means of smp_call_function_single(). Dave Jones mentioned cpufreq might be not only user of rdmsr_on_cpu() and wrmsr_on_cpu(), so I'm putting them into arch/{i386,x86_64}/lib/ . Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Jones <davej@redhat.com>
| * [CPUFREQ] Revert default on deprecated config X86_SPEEDSTEP_CENTRINO_ACPIThomas Renninger2007-02-201-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | Revert default on deprecated config X86_SPEEDSTEP_CENTRINO_ACPI Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dave Jones <davej@redhat.com> arch/i386/kernel/cpu/cpufreq/Kconfig | 1 - arch/x86_64/kernel/cpufreq/Kconfig | 1 - 2 files changed, 2 deletions(-)
* | [PATCH] x86_64 irq: Safely cleanup an irq after moving it.Eric W. Biederman2007-02-263-6/+81
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem: After moving an interrupt when is it safe to teardown the data structures for receiving the interrupt at the old location? With a normal pci device it is possible to issue a read to a device to flush all posted writes. This does not work for the oldest ioapics because they are on a 3-wire apic bus which is a completely different data path. For some more modern ioapics when everything is using front side bus delivery you can flush interrupts by simply issuing a read to the ioapic. For other modern ioapics emperical testing has shown that this does not work. So it appears the only reliable way to know the last of the irqs from an ioapic have been received from before the ioapic was reprogrammed is to received the first irq from the ioapic from after it was reprogrammed. Once we know the last irq message has been received from an ioapic into a local apic we then need to know that irq message has been processed through the local apics. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Add constants for the reserved IRQ vectors.Eric W. Biederman2007-02-262-36/+36
| | | | | | | | | | | | | | | | | | For the ISA irqs we reserve 16 vectors. This patch adds constants for those vectors and modifies the code to use them. Making the code a little clearer and making it possible to move these vectors in the future. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Remove unnecessary irq 0 setup.Eric W. Biederman2007-02-261-6/+0Star
| | | | | | | | | | | | | | | | | | | | The code in io_apic.c and in i8259.c currently hardcode the same vector for the timer interrupt so there is no reason for a special assignment for the timer as the setup for the i8259 already takes care of this. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Simplify assign_irq_vector's arguments.Eric W. Biederman2007-02-261-53/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently assign_irq_vector works mostly by side effect and returns the results of it's changes to the caller. Which makes for a lot of arguments to pass/return and confusion as to what to do if you need the status but you aren't calling assign_irq_vector. This patch stops returning values from assign_irq_vector that can be retrieved just as easily by examining irq_cfg, and modifies the callers to retrive those values from irq_cfg when they need them. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Begin consolidating per_irq data in structures.Eric W. Biederman2007-02-261-61/+50Star
| | | | | | | | | | | | | | | | | | | | | | | | | | Currently the io_apic.c has several parallel arrays for different kinds of data that can be know about an irq. The parallel arrays make the code harder to maintain and make it difficult to remove the static limits on the number of the number of irqs. This patch pushes irq_data and irq_vector into a irq_cfg array and updates the code to use it. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Use NR_IRQS not NR_IRQ_VECTORSEric W. Biederman2007-02-261-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | NR_IRQ_VECTORS is currently a compatiblity define set to NR_IRQs. This patch updates the users of NR_IRQ_VECTORS to use NR_IRQs instead so that NR_IRQ_VECTORS can be removed. There is still shared code with arch/i386 that uses NR_IRQ_VECTORS so we can't remove the #define just yet :( Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: In __DO_ACTION perform the FINAL action for every entry.Eric W. Biederman2007-02-261-1/+1
| | | | | | | | | | | | | | | | | | | | If we have an irq that comes from multiple io_apic pins the FINAL action (which is io_apic_sync or nothing) needs to be called for every entry or else if the two pins come from different io_apics we may not wait until after the action happens on the io_apic. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Simplfiy the set_affinity logic.Eric W. Biederman2007-02-261-9/+3Star
| | | | | | | | | | | | | | | | | | | | | | For some reason the code has been picking TARGET_CPUS when asked to set the affinity to an empty set of cpus. That is just silly it's extra work. Instead if there are no cpus to set the affinity to we should just give up immediately. That is simpler and a little more intuitive. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Refactor setup_IO_APIC_irqEric W. Biederman2007-02-261-92/+34Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we have two routines that do practically the same thing setup_IO_APIC_irq and io_apic_set_pci_routing. This patch makes setup_IO_APIC_irq the common factor of these two previous routines. For setup_IO_APIC_irq all that was needed was to pass the trigger and polarity to make the code a proper subset of io_apic_set_pci_routing. Hopefully consolidating these two routines will improve maintenance there were several differences that simply appear to be one routine or the other getting it wrong. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Remove the unused vector parameter from ioapic_register_intrEric W. Biederman2007-02-261-3/+3
| | | | | | | | | | Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Kill declaration of removed array, interruptEric W. Biederman2007-02-261-2/+0Star
| | | | | | | | | | | | | | It's dead Jim. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] irq: Remove set_native_irq_infoEric W. Biederman2007-02-261-5/+5
| | | | | | | | | | | | | | | | | | | | This patch replaces all instances of "set_native_irq_info(irq, mask)" with "irq_desc[irq].affinity = mask". The latter form is clearer uses fewer abstractions, and makes access to this field uniform accross different architectures. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] x86_64 irq: Simplfy __assign_irq_vectorEric W. Biederman2007-02-261-8/+5Star
| | | | | | | | | | | | | | | | By precomputing old_mask I remove an extra if statement, remove an indentation level and make the code slightly easier to read. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2007-02-191-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits) Documentation/kernel-docs.txt update. arch/cris: typo in KERN_INFO Storage class should be before const qualifier kernel/printk.c: comment fix update I/O sched Kconfig help texts - CFQ is now default, not AS. Remove duplicate listing of Cris arch from README kbuild: more doc. cleanups doc: make doc. for maxcpus= more visible drivers/net/eexpress.c: remove duplicate comment add a help text for BLK_DEV_GENERIC correct a dead URL in the IP_MULTICAST help text fix the BAYCOM_SER_HDX help text fix SCSI_SCAN_ASYNC help text trivial documentation patch for platform.txt Fix typos concerning hierarchy Fix comment typo "spin_lock_irqrestore". Fix misspellings of "agressive". drivers/scsi/a100u2w.c: trivial typo patch Correct trivial typo in log2.h. Remove useless FIND_FIRST_BIT() macro from cardbus.c. ...
| * | Replace remaining references to "driverfs" with "sysfs".Robert P. J. Day2007-02-171-1/+1
| | | | | | | | | | | | | | | | | | | | | Globally, s/driverfs/sysfs/g. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* | | Pull fluff into release branchLen Brown2007-02-171-1/+3
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86_64/pci/mmconfig.c drivers/acpi/bay.c Signed-off-by: Len Brown <len.brown@intel.com>
| * | ACPI: acpi_table_parse() now returns success/fail, not countLen Brown2007-02-132-2/+6
| | | | | | | | | | | | | | | | | | | | | Returning count for tables that are supposed to be unique was useless and confusing. Signed-off-by: Len Brown <len.brown@intel.com>
* | | [PATCH] genirq: remove IRQ_DISABLEDIngo Molnar2007-02-161-3/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that disable_irq() defaults to delayed-disable semantics, the IRQ_DISABLED flag is not needed anymore. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] genirq: do not mask interrupts by defaultIngo Molnar2007-02-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Never mask interrupts immediately upon request. Disabling interrupts in high-performance codepaths is rare, and on the other hand this change could recover lost edges (or even other types of lost interrupts) by conservatively only masking interrupts after they happen. (NOTE: with this change the highlevel irq-disable code still soft-disables this IRQ line - and if such an interrupt happens then the IRQ flow handler keeps the IRQ masked.) Mark i8529A controllers as 'never loses an edge'. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] time: x86_64: re-enable vsyscall support for x86_64john stultz2007-02-166-72/+100
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanup and re-enable vsyscall gettimeofday using the generic clocksource infrastructure. [akpm@osdl.org: cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> 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] time: x86_64: convert x86_64 to use GENERIC_TIMEjohn stultz2007-02-167-408/+124Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts x86_64 to use the GENERIC_TIME infrastructure and adds clocksource structures for both TSC and HPET (ACPI PM is shared w/ i386). [akpm@osdl.org: fix printk timestamps] [akpm@osdl.org: fix printk ckeanups] [akpm@osdl.org: hpet build fix] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> 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] time: x86_64: split x86_64/kernel/time.c upjohn stultz2007-02-164-661/+670
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for the x86_64 generic time conversion, this patch splits out TSC and HPET related code from arch/x86_64/kernel/time.c into respective hpet.c and tsc.c files. [akpm@osdl.org: fix printk timestamps] [akpm@osdl.org: cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> 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] time: x86_64: hpet_address cleanupjohn stultz2007-02-162-18/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for supporting generic timekeeping, this patch cleans up x86-64's use of vxtime.hpet_address, changing it to just hpet_address as is also used in i386. This is necessary since the vxtime structure will be going away. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> 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 Molnar2007-02-164-220/+210Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | | Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6Linus Torvalds2007-02-1430-416/+761
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * '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 Kleen2007-02-131-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Convert last user to pfn_pte - Remove mk_pte_phys Suggested by Jan Beulich Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86: Unify pcspeaker platform device code between i386/x86-64Andi Kleen2007-02-132-20/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trivial cleanup. Only change is that it is always compiled in now on x86-64 like on i386. Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86_64: Wire up compat epoll_pwaitRalf Baechle2007-02-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | > Which remembers me that I think that MIPS is using the non-compat version > of sys_epoll_pwait for compat syscalls. But maybe MIPS doesn't need a compat > syscall for some reason. Dunno. Which reminds me that x86_64 i386 compat doesn't wire up sys_epoll_pwait ;-) Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86: Don't require the vDSO for handling a.out signalsAndi Kleen2007-02-131-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | and in other strange binfmts. vDSO is not necessarily mapped there. Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86: Enable NMI watchdog for AMD Family 0x10 CPUsAndi Kleen2007-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For i386/x86-64. Straight forward -- just reuse the Family 0xf code. Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86: Add new CPUID bits for AMD Family 10 CPUs in /proc/cpuinfoAndi Kleen2007-02-131-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Just various new acronyms. The new popcnt bit is in the middle of Intel space. This looks a little weird, but I've been assured it's ok. Also I fixed RDTSCP for i386 which was at the wrong place. For i386 and x86-64. Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: survive having no irq mapping for a vectorEric W. Biederman2007-02-131-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Occasionally the kernel has bugs that result in no irq being found for a given cpu vector. If we acknowledge the irq the system has a good chance of continuing even though we dropped an irq message. If we continue to simply print a message and not acknowledge the irq the system is likely to become non-responsive shortly there after. AK: Fixed compilation for UP kernels Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: "Luigi Genoni" <luigi.genoni@pirelli.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * | | [PATCH] x86-64: Minor patch for compilation warning in x86_64 signal codeEvgeniy Polyakov2007-02-131-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If DEBUG_SIG is enbaled in source code, ia32_signal.c compiles with warning due to wrong format string. Attached patch fixes that. It is quite minor update, since by default DEBUG_SIG is not enabled and can not be turned on without code modification. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * | | [PATCH] x86-64: avoid warning message livelockRoland Dreier2007-02-131-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've seen my box paralyzed by an endless spew of rtc: lost some interrupts at 1024Hz. messages on the serial console. What seems to be happening is that something real causes an interrupt to be lost and triggers the message. But then printing the message to the serial console (from the hpet interrupt handler) takes more than 1/1024th of a second, and then some more interrupts are lost, so the message triggers again.... Fix this by adding a printk_ratelimit() before printing the warning. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: update IO-APIC dest field to 8-bit for xAPICBenjamin Romer2007-02-131-13/+11Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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] x86-64: clean up sparsemem memory_present callBob Picco2007-02-131-15/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Eliminate arch specific memory_present call x86_64 NUMA by utilizing sparse_memory_present_with_active_regions. Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Bob Picco <bob.picco@hp.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * | | [PATCH] x86: fix laptop bootup hang in init_acpi()Ingo Molnar2007-02-131-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: robustify bad_dma_address handlingMuli Ben-Yehuda2007-02-131-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - set bad_dma_address explicitly to 0x0 - reserve 32 pages from bad_dma_address and up - WARN_ON() a driver feeding us bad_dma_address Thanks to Leo Duran <leo.duran@amd.com> for the suggestion. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Leo Duran <leo.duran@amd.com> Cc: Job Mason <jdmason@kudzu.us>
| * | | [PATCH] x86-64: Don't reserve ROMsAndi Kleen2007-02-131-128/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We trust the e820 table, so explicitely reserving ROMs shouldn't be needed. Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: Fix off by one error in IOMMU boundary checkingAndi Kleen2007-02-131-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Should be harmless because there is normally no memory there, but technically it was incorrect. Pointed out by Leo Duran Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: x86_64 - Fix FS/GS registers for VT executionZachary Amsden2007-02-131-6/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initialize FS and GS to __KERNEL_DS as well. The actual value of them is not important, but it is important to reload them in protected mode. At this time, they still retain the real mode values from initial boot. VT disallows execution of code under such conditions, which means hardware virtualization can not be used to boot the kernel on Intel platforms, making the boot time painfully slow. This requires moving the GS load before the load of GS_BASE, so just move all the segments loads there to keep them together in the code. Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * | | [PATCH] x86-64: Unexport __supported_pte_maskAndi Kleen2007-02-131-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The symbol is needed to manipulate page tables, and modules shouldn't do that. Leftover from 2.4, but no in tree module should need it now. Signed-off-by: Andi Kleen <ak@suse.de>
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