- 17 Oct, 2007 40 commits
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Adrian Bunk authored
As long as there's no write access to this variable there's no reason to let gcc check it at runtime. [ tglx: arch/x86 adaptation ] Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Adrian Bunk authored
This patch contains the following cleanups: - make some needlessly global functions static - #if 0 the unused es7000_stop_cpu() AK: actually removed es7000_stop_cpu AK: fixed a non ISO prototype too [ tglx: arch/x86 adaptation ] Signed-off-by:
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akpm@linux-foundation.org authored
smp_call_function_single handles the call to local CPU case correctly now, no need to handle this in the caller. [ tglx: arch/x86 adaptation ] Signed-off-by:
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H. Peter Anvin authored
Create an inline function for clflush(), with the proper arguments, and use it instead of hard-coding the instruction. This also removes one instance of hard-coded wbinvd, based on a patch by Bauder de Oliveira Costa. [ tglx: arch/x86 adaptation ] Cc: Andi Kleen <andi@firstfloor.org> Cc: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
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Jan Beulich authored
.. as they're never written to. [ tglx: arch/x86 adaptation ] Signed-off-by:
Jan Beulich <jbeulich@novell.com> Signed-off-by:
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Andi Kleen authored
- Mark function static - Clarify license [ tglx: arch/x86 adaptation ] Signed-off-by:
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Jan Beulich authored
Miscellaneous x86 stuff that can live in .rodata. [ tglx: arch/x86 adaptation ] Signed-off-by:
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Thomas Gleixner authored
more struct irqaction initializer cleanups. Signed-off-by:
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Thomas Gleixner authored
clean up struct irqaction initializers to C99. Signed-off-by:
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Thomas Gleixner authored
The i386 irqstat per cpu conversion left an bogus export of the old irqstat array in the header file. Remove it. [ tglx: arch/x86 adaptation ] Signed-off-by:
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Andi Kleen authored
- It was redundant with sync_core() - It was unused - It was broken: no input arguments to cpuid; could fault randomly depending on eax contents. Now it's gone. [ tglx: arch/x86 adaptation ] Signed-off-by:
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Satyam Sharma authored
cpuid_class_cpu_callback() is callback function of a CPU hotplug notifier_block (that is already marked as __cpuinitdata). Therefore it can safely be marked as __cpuinit. cpuid_device_create() is only referenced from other functions that are __cpuinit or __init. So it can also be safely marked __cpuinit. [ tglx: arch/x86 adaptation ] Signed-off-by:
Satyam Sharma <satyam@infradead.org> Signed-off-by:
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Satyam Sharma authored
msr_class_cpu_callback() can be marked __cpuinit, being the notifier callback for a __cpuinitdata notifier_block. So can be marked msr_device_create() too, called only from the newly-__cpuinit msr_class_cpu_callback() or from __init-marked msr_init(). [ tglx: arch/x86 adaptation ] Signed-off-by:
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Oliver Pinter authored
add cpu core name for arch/i386/Kconfig.cpu:Pentium 4 sections help add Pentium D for arch/i386/Kconfig.cpu add Pentium D for arch/x86_64/Kconfig AK: Clarified some of the descriptions [ tglx: arch/x86 adaptation ] Signed-off-by:
Oliver Pinter <oliver.pntr@gmail.com> Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Jesper Juhl authored
This patch cleans up duplicate includes in arch/i386/xen/ [ tglx: arch/x86 adaptation ] Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
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Adrian Bunk authored
This patch makes some needlessly global variables static. [ tglx: arch/x86 adaptation ] Signed-off-by:
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Mike Frysinger authored
This brings x86_64 into line with all other architectures by only defining cond_syscall() when __KERNEL__ is defined. [ tglx: arch/x86 adaptation ] Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Signed-off-by:
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Adrian Bunk authored
This patch makes the needlessly global struct apic_probe static. [ tglx: arch/x86 adaptation ] Signed-off-by:
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Yoann Padioleau authored
When comparing a pointer, it's clearer to compare it to NULL than to 0. [ tglx: arch/x86 adaptation ] Signed-off-by:
Yoann Padioleau <padator@wanadoo.fr> Signed-off-by:
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Jesper Juhl authored
This patch cleans up duplicate includes in arch/i386/kernel/ [ tglx: arch/x86 adaptation ] Signed-off-by:
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Andi Kleen authored
Remove rogue default m in drivers/video/Kconfig default m is near always wrong, like here. For some reason ACPI likes to reintroduce these and I like to immediately squash them again before they pollute too many .configs. Cc: len.brown@intel.com Cc: luming.yu@gmail.com Acked-by:
Len Brown <len.brown@intel.com> Signed-off-by:
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Satyam Sharma authored
cache_shared_cpu_map_setup() and cache_remove_shared_cpu_map() are functions called from another function that is __cpuinit. But the !CONFIG_SMP empty-body stubs of these functions are unconditionally marked __init, which is actively wrong, and will lead to oops. But we never saw this oops, because they always managed to get inlined in their callsites, by virtue of being empty-body stubs! They should still be __cpuinit, of course. assocs[], levels[] and types[] are only referenced from function that is __cpuinit. So these are candidates for being marked __cpuinitdata. [akpm@linux-foundation.org: build fix] Signed-off-by:
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Yinghai Lu authored
use dev_to_node() to get node for device in dma_alloc_pages(). Signed-off-by:
Yinghai Lu <yinghai.lu@sun.com> Acked-by:
Christoph Lameter <clameter@sgi.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Michal Schmidt authored
HP ProLiant systems DL385 G2 and DL585 G2 need pci=bfsort to enumerate PCI devices in the expected order. Matt sayeth: biosdevname is a userspace app I wrote to help solve this so we don't need to patch the kernel for future systems. It's not integrated into any distributions properly yet, but is included in openSUSE 10.3 and Fedora 8 for people who want to download and install it there. It acts as a udev helper. For the time being, patching the kernel is necessary. I really hope biosdevname eliminates that need in future distributions. http://linux.dell.com/biosdevname/Signed-off-by:
Michal Schmidt <mschmidt@redhat.com> Cc: <john.cagle@hp.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: Andy Gospodarek <andy@greyhouse.net> Cc: Greg KH <greg@kroah.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Muli Ben-Yehuda authored
The old check we used based on dev->bus->number is wrong for devices on CalIOC2. Instead look whether we have an IOMMU table for that bus - if not, translation is disabled. Thanks to Murillo Fernandes Bernardes <bernarde@br.ibm.com> for spotting, suggesting a fix and testing. Signed-off-by:
Muli Ben-Yehuda <muli@il.ibm.com> Acked-by:
Murillo Fernandes Bernardes <bernarde@br.ibm.com> Signed-off-by:
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Huang, Ying authored
This patch fixes a bug of change_page_attr/change_page_attr_addr on Intel x86_64 CPUs. After changing page attribute to be executable with these functions, the page remains un-executable on Intel x86_64 CPU. Because on Intel x86_64 CPU, only if the "NX" bits of all four level page tables are cleared, the corresponding page is executable (refer to section 4.13.2 of Intel 64 and IA-32 Architectures Software Developer's Manual). So, the bug is fixed through clearing the "NX" bit of PMD when splitting the huge PMD. Signed-off-by:
Huang Ying <ying.huang@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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James Bottomley authored
A while ago Randy Dunlap and Adrian Bunk suggested we simply prevent UP voyager building. I resisted this on the grounds that the nagging was the only thing that was going to cause me to look at this. However, now I think we should probably take this course. Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Prarit Bhargava authored
When dumping memory via sysrq-m it is possible to take a bogus NMI watchdog or softlockup watchdog because the dump can take a long time on big memory systems. Occasionally tickle the watchdog when doing the dump. Signed-off-by:
Prarit Bhargava <prarit@redhat.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Ingo Molnar authored
if CONFIG_PAGEALLOC is enabled then X86_FEATURE_PSE is disabled and all the kernel physical RAM pagetables are set up as 4K pages. This is needed so that CONFIG_PAGEALLOC can do finegrained mapping and unmapping of pages. as a side-effect though, the total size of memory allocated as kernel pagetables increases significantly. All these pagetables are allocated via alloc_bootmem_low_pages(), straight out of the lowmem DMA pool. If the system has enough RAM and a large kernel image then almost all of the 16 MB lowmem DMA pool is allocated to the image and to pagetables - leaving no space for __GFP_DMA allocations. this results in drivers failing and the bootup hanging: swapper invoked oom-killer: gfp_mask=0x80d1, order=0, oomkilladj=0 [<4015059f>] out_of_memory+0x17f/0x1c0 [<40151f3c>] __alloc_pages+0x37c/0x3a0 [<40168cd7>] slob_new_page+0x37/0x50 [<40168dff>] slob_alloc+0x10f/0x190 [<40169010>] __kmalloc_node+0x80/0x90 [<405a17e3>] scsi_host_alloc+0x33/0x2c0 [<405a1a82>] scsi_register+0x12/0x60 [<40d5889e>] aha1542_detect+0x9e/0x940 [<405c5ba5>] ultrastor_detect+0x265/0x5f0 [<401352f5>] getnstimeofday+0x35/0xf0 [<40d58751>] init_this_scsi_driver+0x41/0xf0 [<40d0b856>] kernel_init+0x136/0x310 [<40d58710>] init_this_scsi_driver+0x0/0xf0 [<40d0b720>] kernel_init+0x0/0x310 [<40105547>] kernel_thread_helper+0x7/0x10 ======================= the fix is to first allocate from above the DMA pool, and if that fails (for example due to it being a machine with less than 16 MB of RAM), allocate from the DMA pool as a fallback. With this fix applied i was able to boot a PAGEALLOC=y kernel that would hang before. Signed-off-by:
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Ingo Molnar authored
To preserve the DMA pool in CONFIG_DEBUG_PAGEALLOC=y kernels, we'll allocate pagetables from above the 16MB DMA limit, so we'll have to set up boot pagetables to cover 16MB more RAM (worst-case). Signed-off-by:
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Ingo Molnar authored
with this fix Geode kernels can be booted (and QA-ed) on generic PCs. otherwise it crashes and burns during early bootup: Detected 2160.212 MHz processor. general protection fault: 0000 [#1] PREEMPT SMP Modules linked in: CPU: 0 EIP: 0060:[<c09071f6>] Not tainted VLI EFLAGS: 00010002 (2.6.23-rc9 #90) EIP is at tsc_init+0xa6/0x150 eax: 00000001 ebx: c1dce000 ecx: 00001900 edx: 00000001 esi: 00051000 edi: 00051000 ebp: c08fdfc4 esp: c08fdfa4 ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 Process swapper (pid: 0, ti=c08fc000 task=c082a180 task.ti=c08fc000) Stack: c076b870 00000870 000000d4 0000001d c0831e80 c1dce000 00051000 00051000 c08fdfcc c09053f8 c08fdff8 c09045ff 000001e2 c09040a0 00051000 00000020 0004e500 c0932140 00020800 00099800 c08ed000 01409007 00000000 Call Trace: [<c010517a>] show_trace_log_lvl+0x1a/0x30 [<c0105246>] show_stack_log_lvl+0xb6/0x100 [<c0105732>] show_registers+0x212/0x3a0 [<c0105aa4>] die+0x104/0x220 [<c0105f5f>] do_general_protection+0x1ef/0x2b0 [<c06699f2>] error_code+0x72/0x78 [<c09053f8>] time_init+0x8/0x20 [<c09045ff>] start_kernel+0x1af/0x320 [<00000000>] 0x0 ======================= Code: 31 d2 b8 00 00 09 3d f7 35 2c 70 9b c0 a3 04 95 8f c0 e8 ce 4e 99 ff b8 e0 45 93 c0 e8 94 b1 c5 ff e8 7f 3d 80 ff b9 00 19 00 00 <0f> 32 f6 c4 01 74 07 83 25 24 ce 82 c0 fd 8b 0d 20 ce 82 c0 b8 EIP: [<c09071f6>] tsc_init+0xa6/0x150 SS:ESP 0068:c08fdfa4 Kernel panic - not syncing: Attempted to kill the idle task! Signed-off-by: -
Ingo Molnar authored
if nosmp has been passed as a boot option, but nmi_watchdog=2 has also been enabled then keep minimal local APIC functionality around to make the watchdog work. this allowed me to debug a hard hang that would only occur with a nosmp bootup. Signed-off-by:
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Andi Kleen authored
Since the 64bit kernel has different indexes for this TLS segments the address needs to be adjusted in the ptrace 32bit emulation. [ tglx: arch/x86 adaptation ] Reported-by: Amnon Shiloh Signed-off-by:
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Fengguang Wu authored
In alternative_instructions(), call free_init_pages() with irqs enabled. It fixes the warning message in smp_call_function*(), which should not be called with irqs disabled. [ 0.310000] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) [ 0.310000] CPU: L2 Cache: 512K (64 bytes/line) [ 0.310000] CPU 0/0 -> Node 0 [ 0.310000] SMP alternatives: switching to UP code [ 0.310000] Freeing SMP alternatives: 25k freed [ 0.310000] WARNING: at arch/x86_64/kernel/smp.c:397 smp_call_function_mask() [ 0.310000] [ 0.310000] Call Trace: [ 0.310000] [<ffffffff8100dbde>] dump_trace+0x3ee/0x4a0 [ 0.310000] [<ffffffff8100dcd3>] show_trace+0x43/0x70 [ 0.310000] [<ffffffff8100dd15>] dump_stack+0x15/0x20 [ 0.310000] [<ffffffff8101cd44>] smp_call_function_mask+0x94/0xa0 [ 0.310000] [<ffffffff8101d0b2>] smp_call_function+0x32/0x40 [ 0.310000] [<ffffffff8104277f>] on_each_cpu+0x1f/0x50 [ 0.310000] [<ffffffff81026eac>] global_flush_tlb+0x8c/0x110 [ 0.310000] [<ffffffff81025c85>] free_init_pages+0xe5/0xf0 [ 0.310000] [<ffffffff81549b5e>] alternative_instructions+0x7e/0x150 [ 0.310000] [<ffffffff8154a2ea>] check_bugs+0x1a/0x20 [ 0.310000] [<ffffffff81540c4a>] start_kernel+0x2da/0x380 [ 0.310000] [<ffffffff81540132>] _sinittext+0x132/0x140 [ 0.310000] [ 0.320000] ACPI: Core revision 20070126 [ 0.560000] Using local APIC timer interrupts. [ 0.590000] Detected 62.496 MHz APIC timer. [ 0.590000] Brought up 1 CPUs [ tglx: arch/x86 adaptation ] Cc: Laurent Vivier <Laurent.Vivier@bull.net> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
Fengguang Wu <wfg@mail.ustc.edu.cn> Signed-off-by:
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Kirill Korotaev authored
Some gcc versions (I checked at least 4.1.1 from RHEL5 & 4.1.2 from gentoo) can generate incorrect code with read_crX()/write_crX() functions mix up, due to cached results of read_crX(). The small app for x8664 below compiled with -O2 demonstrates this (i686 does the same thing):
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Andi Kleen authored
Previously the data from before the exec was kept in there. Zero them instead. [ tglx: arch/x86 adaptation ] Signed-off-by:
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Andrey Mirkin authored
Right now register edi is just cleared before calling do_exit. That is wrong because correct return value will be ignored. Value from rax should be copied to rdi instead of clearing edi. AK: changed to 32bit move because it's strictly an int [ tglx: arch/x86 adaptation ] Signed-off-by:
Andrey Mirkin <major@openvz.org> Signed-off-by:
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Jan Beulich authored
One more of these issues (which were considered fixed a few releases back): other than on x86-64, i386 allows set_fixmap() to replace already present mappings. Consequently, on PAE, care must be taken to not update the high half of a pte while the low half is still holding the old value. [ tglx: arch/x86 adaptation ] Signed-off-by:
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Sam Ravnborg authored
Fix following section mismatch warning: WARNING: vmlinux.o(.text+0xc88c): Section mismatch: reference to .init.text:trap_init_f00f_bug (between 'init_intel' and 'cpuid4_cache_lookup') init_intel are __cpuint where trap_init_f00f_bug is __init. Fixed by declaring trap_init_f00f_bug __cpuinit. Moved the defintion of trap_init_f00f_bug to the sole user in init.c so the ugly prototype in intel.c could get killed. Frank van Maarseveen <frankvm@frankvm.com> supplied the .config used to reproduce the warning. [ tglx: arch/x86 adaptation ] Cc: Frank van Maarseveen <frankvm@frankvm.com> Signed-off-by:
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Satyam Sharma authored
Fix bugzilla #8679 WARNING: arch/i386/kernel/built-in.o(.data+0x2148): Section mismatch: reference to .init.text: (between 'thermal_throttle_cpu_notifier' and 'mtrr_mutex') comes because struct notifier_block thermal_throttle_cpu_notifier in arch/i386/kernel/cpu/mcheck/therm_throt.c goes in .data section but the notifier callback function itself has been marked __cpuinit which becomes __init == .init.text when HOTPLUG_CPU=n. The warning is bogus because the callback will never be called out if HOTPLUG_CPU=n in the first place (as one can see from kernel/cpu.c, the cpu_chain itself is __cpuinitdata :-) So, let's mark thermal_throttle_cpu_notifier as __cpuinitdata to fix the section mismatch warning. [ tglx: arch/x86 adaptation ] Signed-off-by:
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