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* Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6Linus Torvalds2006-12-07121-2186/+4507
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (156 commits) [PATCH] x86-64: Export smp_call_function_single [PATCH] i386: Clean up smp_tune_scheduling() [PATCH] unwinder: move .eh_frame to RODATA [PATCH] unwinder: fully support linker generated .eh_frame_hdr section [PATCH] x86-64: don't use set_irq_regs() [PATCH] x86-64: check vector in setup_ioapic_dest to verify if need setup_IO_APIC_irq [PATCH] x86-64: Make ix86 default to HIGHMEM4G instead of NOHIGHMEM [PATCH] i386: replace kmalloc+memset with kzalloc [PATCH] x86-64: remove remaining pc98 code [PATCH] x86-64: remove unused variable [PATCH] x86-64: Fix constraints in atomic_add_return() [PATCH] x86-64: fix asm constraints in i386 atomic_add_return [PATCH] x86-64: Correct documentation for bzImage protocol v2.05 [PATCH] x86-64: replace kmalloc+memset with kzalloc in MTRR code [PATCH] x86-64: Fix numaq build error [PATCH] x86-64: include/asm-x86_64/cpufeature.h isn't a userspace header [PATCH] unwinder: Add debugging output to the Dwarf2 unwinder [PATCH] x86-64: Clarify error message in GART code [PATCH] x86-64: Fix interrupt race in idle callback (3rd try) [PATCH] x86-64: Remove unwind stack pointer alignment forcing again ... Fixed conflict in include/linux/uaccess.h manually Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] x86-64: Export smp_call_function_singleAndi Kleen2006-12-071-0/+1
| | | | | | | | | | | | smp_call_function() is exported, makes sense to export this one too. Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: Clean up smp_tune_scheduling()Adrian Bunk2006-12-071-24/+5
| | | | | | | | | | | | | | | | | | | | | | - remove the write-only local variable "bandwidth" - don't set "max_cache_size" in the (cachesize < 0) case: that's already handled in kernel/sched.c:measure_migration_cost() Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] unwinder: move .eh_frame to RODATAJan Beulich2006-12-072-18/+0
| | | | | | | | | | | | | | | | | | | | The .eh_frame section contents is never written to, so it can as well benefit from CONFIG_DEBUG_RODATA. Diff-ed against firstfloor tree. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: don't use set_irq_regs()Oleg Nesterov2006-12-071-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | We don't need to setup _irq_regs in smp_xxx_interrupt (except apic timer). These handlers run with irqs disabled and do not call functions which need "struct pt_regs". Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Acked-By: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] x86-64: check vector in setup_ioapic_dest to verify if need ↵Yinghai Lu2006-12-071-43/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | setup_IO_APIC_irq setup_IO_APIC_irqs could fail to get vector for some device when you have too many devices, because at that time only boot cpu is online. So check vector for irq in setup_ioapic_dest and call setup_IO_APIC_irq to make sure IO-APIC irq-routing table is initialized. Also seperate setup_IO_APIC_irq from setup_IO_APIC_irqs. Signed-off-by: Yinghai Lu <yinghai.lu@amd.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] x86-64: Make ix86 default to HIGHMEM4G instead of NOHIGHMEMRandy Dunlap2006-12-071-1/+2
| | | | | | | | | | | | | | | | | | Generally better for allmodconfig coverage. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] i386: replace kmalloc+memset with kzallocBurman Yan2006-12-074-25/+11
| | | | | | | | | | Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: remove remaining pc98 codeAdrian Bunk2006-12-072-23/+2
| | | | | | | | | | | | Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: remove unused variableDavid Rientjes2006-12-071-2/+1
| | | | | | | | | | | | | | | | | | | | | | Remove unused variable in msr_write(). Reported by D Binderman <dcb314@hotmail.com>. Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: David Rientjes <rientjes@cs.washington.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: replace kmalloc+memset with kzalloc in MTRR codeBurman Yan2006-12-072-6/+3
| | | | | | | | | | | | Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Fix numaq build errorRandy Dunlap2006-12-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | CC arch/i386/boot/compressed/misc.o arch/i386/boot/compressed/misc.c:120: error: static declaration of 'xquad_portio' follows non-static declaration include/asm/io.h:275: error: previous declaration of 'xquad_portio' was here make[2]: *** [arch/i386/boot/compressed/misc.o] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Clarify error message in GART codeAndi Kleen2006-12-071-2/+1
| | | | | | | | | | | | | | - Remove "Disabling IOMMU" message because it confuses people - Clarify that the GART IOMMU is refered to in other message Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Fix interrupt race in idle callback (3rd try)Venkatesh Pallipadi2006-12-071-2/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Idle callbacks has some races when enter_idle() sets isidle and subsequent interrupts that can happen on that CPU, before CPU goes to idle. Due to this, an IDLE_END can get called before IDLE_START. To avoid these races, disable interrupts before enter_idle and make sure that all idle routines do not enable interrupts before entering idle. Note that poll_idle() still has a this race as it has to enable interrupts before going to idle. But, all other idle routines have the race fixed. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Remove unwind stack pointer alignment forcing againAndi Kleen2006-12-071-6/+0
| | | | | | | | | | | | | | | | | | This was added as a workaround for the fallback unwinder not supporting unaligned stack pointers properly. But now it was fixed to do that, so it's not needed anymore Cc: mingo@elte.hu Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] unwinder: more sanity checks in Dwarf2 unwinderJan Beulich2006-12-072-0/+14
| | | | | | | | | | | | | | | | Tighten the requirements on both input to and output from the Dwarf2 unwinder. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] unwinder: always use unlocked module list access in unwinder fallbackAndi Kleen2006-12-071-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | We're already well protected against module unloads because module unload uses stop_machine(). The only exception is NMIs, but other users already risk lockless accesses here. This avoids some hackery in lockdep and also a potential deadlock This matches what i386 does. Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Mark rdtsc as sync only for netburst, not for core2Arjan van de Ven2006-12-071-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On the Core2 cpus, the rdtsc instruction is not serializing (as defined in the architecture reference since rdtsc exists) and due to the deep speculation of these cores, it's possible that you can observe time go backwards between cores due to this speculation. Since the kernel already deals with this with the SYNC_RDTSC flag, the solution is simple, only assume that the instruction is serializing on family 15... The price one pays for this is a slightly slower gettimeofday (by a dozen or two cycles), but that increase is quite small to pay for a really-going-forward tsc counter. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] Calgary: remove unused variablesMuli Ben-Yehuda2006-12-071-5/+0
| | | | | | | | | | | | | | Spotted by d binderman <dcb314@hotmail.com>. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Synchronize RDTSC on single core AMDAndi Kleen2006-12-071-5/+2
| | | | | | | | | | | | | | There is no guarantee that two RDTSCs in a row are monotonic, so don't assume it on single core AMD systems. This will make gettimeofday slower again Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: always enable regparmAdrian Bunk2006-12-072-17/+1
| | | | | | | | | | | | | | | | | | | | | | -mregparm=3 has been enabled by default for some time on i386, and AFAIK there aren't any problems with it left. This patch removes the REGPARM config option and sets -mregparm=3 unconditionally. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: remove unused acpi_found_madt in mparse.Yinghai Lu2006-12-071-2/+0
| | | | | | | | | | | | | | remove unused acpi_found_madt in mparse.c Signed-off-by: Yinghai Lu <yinghai.lu@amd.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: touch softlockup during backtracingDave Jones2006-12-071-0/+2
| | | | | | | | | | | | | | | | | | | | Sometimes the soft watchdog fires after we're done oopsing. See http://projects.info-pull.com/mokb/MOKB-25-11-2006.html for an example. AK: changed to touch_nmi_watchdog() Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Fix kobject_init() WARN_ON on resume from diskRafael J. Wysocki2006-12-071-0/+1
| | | | | | | | | | | | | | | | Make mce_remove_device() clean up the kobject in per_cpu(device_mce, cpu) after it has been unregistered. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: remove duplicate ARCH_DISCONTIGMEM_ENABLE optionAdrian Bunk2006-12-071-5/+0
| | | | | | | | | | | | | | One ARCH_DISCONTIGMEM_ENABLE option is enough. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86_64: interrupt array size should be aligned to NR_VECTORSYinghai Lu2006-12-071-1/+2
| | | | | | | | | | | | | | | | interrupt array is referred for idt vectors instead of NR_IRQS, so change size to NR_VECTORS - FIRST_EXTERNAL_VECTOR. Also change to static. Signed-off-by: Yinghai Lu <yinghai@amd.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86_64: clear_bss before set_intr_gate with early_idt_handlerYinghai Lu2006-12-071-2/+4
| | | | | | | | | | | | | | idt_table is in the .bss section, so clear_bss need to called at first Signed-off-by: Yinghai Lu <yinghai.lu@amd.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86: add sysctl for kstack_depth_to_printChuck Ebbert2006-12-072-2/+2
| | | | | | | | | | | | | | | | | | Add sysctl for kstack_depth_to_print. This lets users change the amount of raw stack data printed in dump_stack() without having to reboot. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Remove unused GET_APIC_VERSION call from clear_local_APICDavid Rientjes2006-12-071-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | Remove unused GET_APIC_VERSION call from clear_local_APIC() and __setup_APIC_LVTT(). Reported by D Binderman <dcb314@hotmail.com>. Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: David Rientjes <rientjes@cs.washington.edu> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: remove duplicate printkDave Jones2006-12-071-4/+1
| | | | | | | | | | | | | | | | We do the exact same printk about a dozen lines above with no intermediate printk's. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: Preserve EFI run time regions with memmap parameterArtiom Myaskouvskey2006-12-072-19/+43
| | | | | | | | | | | | | | | | | | | | When using memmap kernel parameter in EFI boot we should also add to memory map memory regions of runtime services to enable their mapping later. AK: merged and cleaned up the patch Signed-off-by: Artiom Myaskouvskey <artiom.myaskouvskey@intel.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86: Regard MSRs in lapic_suspend()/lapic_resume()Karsten Wiese2006-12-072-8/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Read/Write APIC_LVTPC and APIC_LVTTHMR only, if get_maxlvt() returns certain values. This is done like everywhere else in i386/kernel/apic.c, so I guess its correct. Suspends/Resumes to disk fine and eleminates an smp_error_interrupt() here on a K8. AK: ported to x86-64 too Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: Avoid boot warning with apic=debugAndi Kleen2006-12-071-1/+3
| | | | | | | | | | | | | | | | There are two consumers of apic=: the apic debug level and the low level generic architecture code. early_param would warn when the low level code rejected "debug". Avoid this. Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: i386 add Intel BTS cpufeature bit and detection (take 2)Stephane Eranian2006-12-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is a small patch for i386 which adds a cpufeature flag and detection code for Intel's Branch Trace Store (BTS) feature. This feature can be found on Intel P4 and Core 2 processors among others. It can also be used by perfmon. changelog: - add CPU_FEATURE_BTS - add Branch Trace Store detection signed-off-by: stephane eranian <eranian@hpl.hp.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: x86-64 add Intel BTS cpufeature bit and detection (take 2)Stephane Eranian2006-12-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is a small patch for x86-64 which adds a cpufeature flag and detection code for Intel's Branch Trace Store (BTS) feature. This feature can be found on Intel P4 and Core 2 processors among others. It can also be used by perfmon. changelog: - add CPU_FEATURE_BTS - add Branch Trace Store detection signed-off-by: stephane eranian <eranian@hpl.hp.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: Make irq_vector staticAdrian Bunk2006-12-071-1/+1
| | | | | | | | | | | | | | | | | | | | irq_vector[] can now become static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Ingo Molnar <mingo@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] i386: handle a negative return valueAdrian Bunk2006-12-071-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | The Coverity checker noted that bad things might happen if find_isa_irq_apic() returned -1. [akpm@osdl.org: add debugging checks] Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] i386: call efi_get_time during suspendArtiom Myaskouvskey2006-12-071-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Function efi_get_time called not only during init kernel phase but also during suspend (from get_cmos_time). When it is called from get_cmos_time the corresponding runtime service should be called in virtual and not in physical mode. Signed-off-by: Artiom Myaskouvskey <artiom.myaskouvskey@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: "Narayanan, Chandramouli" <chandramouli.narayanan@intel.com> Cc: "Jiossy, Rami" <rami.jiossy@intel.com> Cc: "Satt, Shai" <shai.satt@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] x86: fix the irqbalance quirk for E7320/E7520/E7525Siddha, Suresh B2006-12-075-11/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the irqbalance quirks for E7320/E7520/E7525(Errata 23 in http://download.intel.com/design/chipsets/specupdt/30304203.pdf) to early quirks. And add a PCI quirk for these platforms to check(which happens very late during the boot) if the APIC routing is indeed set to default flat mode. This fixes the breakage(in x86_64) of this quirk due to cpu hotplug which selects physical mode instead of the logical flat(as needed for this errata workaround). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] x86-64: add genapic_forceSiddha, Suresh B2006-12-071-1/+8
| | | | | | | | | | | | | | | | | | | | Add genapic_force. Used by the next Intel quirks patch. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] i386: change the 'no_control' field to 'hotpluggable' in the struct cpuSiddha, Suresh B2006-12-073-10/+10
| | | | | | | | | | | | | | | | | | | | | | Change the 'no_control' field in the cpu struct to a more positive and better term 'hotpluggable'. And change(/cleanup) the logic accordingly. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] i386: introduce the mechanism of disabling cpu hotplug controlSiddha, Suresh B2006-12-071-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Add 'enable_cpu_hotplug' flag and when cleared, the hotplug control file ("online") will not be added under /sys/devices/system/cpu/cpuX/ Next patch doing PCI quirks will use this. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] x86: add write_pci_config_byte() to direct PCI access routinesSiddha, Suresh B2006-12-071-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mechanism of selecting physical mode in genapic when cpu hotplug is enabled on x86_64, broke the quirk(quirk_intel_irqbalance()) introduced for working around the transposing interrupt message errata in E7520/E7320/E7525 (revision ID 0x9 and below. errata #23 in http://download.intel.com/design/chipsets/specupdt/30304203.pdf). This errata requires the mode to be in logical flat, so that interrupts can be directed to more than one cpu(and thus use hardware IRQ balancing enabled by BIOS on these platforms). Following four patches fixes this by moving the quirk to early quirk and forcing the x86_64 genapic selection to logical flat on these platforms. Thanks to Shaohua for pointing out the breakage. This patch: Add write_pci_config_byte() to direct PCI access routines Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] i386: Convert more absolute symbols to section relativeVivek Goyal2006-12-071-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | o Convert more absolute symbols to section relative to keep the theme in vmlinux.lds.S file and to avoid problem if kernel is relocated. o Also put a message so that in future people can be aware of it and avoid introducing absolute symbols. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] i386: alloc_gdt() staticAdrian Bunk2006-12-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Make the needlessly global alloc_gdt() static. (against) pda-percpu-init Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@muc.de> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@osdl.org>
| * [PATCH] i386: fix MTRR codeJan Beulich2006-12-077-60/+162
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Until not so long ago, there were system log messages pointing to inconsistent MTRR setup of the video frame buffer caused by the way vesafb and X worked. While vesafb was fixed meanwhile, I believe fixing it there only hides a shortcoming in the MTRR code itself, in that that code is not symmetric with respect to the ordering of attempts to set up two (or more) regions where one contains the other. In the current shape, it permits only setting up sub-regions of pre-exisiting ones. The patch below makes this symmetric. While working on that I noticed a few more inconsistencies in that code, namely - use of 'unsigned int' for sizes in many, but not all places (the patch is converting this to use 'unsigned long' everywhere, which specifically might be necessary for x86-64 once a processor supporting more than 44 physical address bits would become available) - the code to correct inconsistent settings during secondary processor startup tried (if necessary) to correct, among other things, the value in IA32_MTRR_DEF_TYPE, however the newly computed value would never get used (i.e. stored in the respective MSR) - the generic range validation code checked that the end of the to-be-added range would be above 1MB; the value checked should have been the start of the range - when contained regions are detected, previously this was allowed only when the old region was uncacheable; this can be symmetric (i.e. the new region can also be uncacheable) and even further as per Intel's documentation write-trough and write-back for either region is also compatible with the respective opposite in the other Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: conditionalize inclusion of some MTRR flavorsJan Beulich2006-12-072-3/+7
| | | | | | | | | | | | | | Avoid inclusion of code that's dead for x86-64. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: Don't touch per cpu memory of offline CPUs in touch_nmi_watchdogJan Beulich2006-12-071-7/+9
| | | | | | | | | | | | | | | | Just like on x86-64, don't touch foreign CPUs' memory if the watchdog isn't enabled at all. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] i386: clear_fixmap() should not use set_pte()Jan Beulich2006-12-071-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | While not strictly required with the current code (as the upper half of page table entries generated by __set_fixmap() cannot be non-zero due to the second parameter of this function being 'unsigned long'), the use of set_pte() in __set_fixmap() in the context of clear_fixmap() is still improper with CONFIG_X86_PAE (see the respective comment in include/asm-i386/pgtable-3level.h) and would turn into a bug if that second parameter ever gets changed to a 64-bit type. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de>
| * [PATCH] x86-64: Rate limit no irq handler messagesAndi Kleen2006-12-071-1/+1
| | | | | | | | Signed-off-by: Andi Kleen <ak@suse.de>
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