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2008-09-01[ARM] cputype: separate definitions, use themRussell King
Add asm/cputype.h, moving functions and definitions from asm/system.h there. Convert all users of 'processor_id' to the more efficient read_cpuid_id() function. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-25[x86] Clean up MAXSMP Kconfig, and limit NR_CPUS to 512Linus Torvalds
This fixes a regression that was indirectly caused by commit 1184dc2ffe2c8fb9afb766d870850f2c3165ef25 ("x86: modify Kconfig to allow up to 4096 cpus"). Allowing 4k CPU's is not practical at this time, because we still have a number of places that have several 'cpumask_t's on the stack, and a 4k-bit cpumask is 512 bytes of stack-space for each such variable. This literally caused functions like 'smp_call_function_mask' to have a 2.5kB stack frame, and several functions to have 2kB stackframes. With an 8kB stack total, smashing the stack was simply much too likely. At least bugzilla entry http://bugzilla.kernel.org/show_bug.cgi?id=11342 was due to this. The earlier commit to not inline load_module() into sys_init_module() fixed the particular symptoms of this that Alan Brunelle saw in that bugzilla entry, but the huge stack waste by cpumask_t's was the more direct cause. Some day we'll have allocation helpers that allocate large CPU masks dynamically, but in the meantime we simply cannot allow cpumasks this large. Cc: Alan D. Brunelle <Alan.Brunelle@hp.com> Cc: Mike Travis <travis@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-25Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: add X86_FEATURE_XMM4_2 definitions x86: fix cpufreq + sched_clock() regression x86: fix HPET regression in 2.6.26 versus 2.6.25, check hpet against BAR, v3 x86: do not enable TSC notifier if we don't need it x86 MCE: Fix CPU hotplug problem with multiple multicore AMD CPUs x86: fix: make PCI ECS for AMD CPUs hotplug capable x86: fix: do not run code in amd_bus.c on non-AMD CPUs
2008-08-25KVM: MMU: Fix torn shadow pteAvi Kivity
The shadow code assigns a pte directly in one place, which is nonatomic on i386 can can cause random memory references. Fix by using an atomic setter. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-08-25x86: fix cpufreq + sched_clock() regressionPeter Zijlstra
I noticed that my sched_clock() was slow on a number of machine, so I started looking at cpufreq. The below seems to fix the problem for me. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-25Merge branch 'linus' into x86/urgentIngo Molnar
2008-08-25x86: fix HPET regression in 2.6.26 versus 2.6.25, check hpet against BAR, v3Yinghai Lu
David Witbrodt tracked down (and bisected) a hpet bootup hang on his system to the following problem: a BIOS bug made the hpet device visible as a generic PCI device. If e820 reserved entries happen to be registered first in the resource tree [which v2.6.26 started doing], then the PCI code will reallocate that device's BAR to some other address - breaking timer IRQs and hanging the system. ( Normally hpet devices are hidden by the BIOS from the OS's PCI discovery via chipset magic. Sometimes the hpet is not a PCI device at all. ) Solve this fundamental fragility by making non-PCI platform drivers insert resources into the resource tree even if it overlaps the e820 reserved entry, to keep the resource manager from updating the BAR. Also do these checks for the ioapic and mmconfig addresses, and emit a warning if this happens. Bisected-by: David Witbrodt <dawitbro@sbcglobal.net> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Tested-by: David Witbrodt <dawitbro@sbcglobal.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-24x86: do not enable TSC notifier if we don't need itLinus Torvalds
Impact: crash on non-TSC-equipped CPUs Don't enable the TSC notifier if we *either*: 1. don't have a CPU, or 2. have a CPU with constant TSC. In either of those cases, the notifier is either damaging (1) or useless(2). From: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-08-23removed unused #include <linux/version.h>'sAdrian Bunk
This patch lets the files using linux/version.h match the files that #include it. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-23x86 MCE: Fix CPU hotplug problem with multiple multicore AMD CPUsRafael J. Wysocki
During CPU hot-remove the sysfs directory created by threshold_create_bank(), defined in arch/x86/kernel/cpu/mcheck/mce_amd_64.c, has to be removed before its parent directory, created by mce_create_device(), defined in arch/x86/kernel/cpu/mcheck/mce_64.c . Moreover, when the CPU in question is hotplugged again, obviously the latter has to be created before the former. At present, the right ordering is not enforced, because all of these operations are carried out by CPU hotplug notifiers which are not appropriately ordered with respect to each other. This leads to serious problems on systems with two or more multicore AMD CPUs, among other things during suspend and hibernation. Fix the problem by placing threshold bank CPU hotplug callbacks in mce_cpu_callback(), so that they are invoked at the right places, if defined. Additionally, use kobject_del() to remove the sysfs directory associated with the kobject created by kobject_create_and_add() in threshold_create_bank(), to prevent the kernel from crashing during CPU hotplug operations on systems with two or more multicore AMD CPUs. This patch fixes bug #11337. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Andi Kleen <andi@firstfloor.org> Tested-by: Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-23x86: fix: make PCI ECS for AMD CPUs hotplug capableRobert Richter
Until now, PCI ECS setup was performed at boot time only and for cpus that are enabled then. This patch fixes this and adds cpu hotplug. Tests sequence (check if ECS bit is set when bringing cpu online again): # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00404010 # ( perl -e 'sysseek(STDOUT, 0xC001001F, 0); print pack "l*", 8, 0x00400010' ) > /dev/cpu/1/msr # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00400010 # echo 0 > /sys/devices/system/cpu/cpu1/online # echo 1 > /sys/devices/system/cpu/cpu1/online # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00404010 Reported-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-23x86: fix: do not run code in amd_bus.c on non-AMD CPUsRobert Richter
Jan Beulich wrote: > Even worse - this would even try to access the MSR on non-AMD CPUs > (currently probably prevented just by the fact that only AMD ones use > family values of 0x10 or higher). This patch adds cpu vendor check to the postcore_initcalls. Reported-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-22Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: work around MTRR mask setting, v2 x86: fix section mismatch warning - uv_cpu_init x86: fix VMI for early params x86: fix two modpost warnings in mm/init_64.c x86: fix 1:1 mapping init on 64-bit (memory hotplug case) x86: work around MTRR mask setting x86: PAT Update validate_pat_support for intel CPUs devmem, x86: PAT Change /dev/mem mmap with O_SYNC to use UC_MINUS x86: PAT proper tracking of set_memory_uc and friends x86: fix BUG: unable to handle kernel paging request (numaq_tsc_disable) x86: export pv_lock_ops non-GPL x86, mmiotrace: silence section mismatch warning - leave_uniprocessor x86: use WARN() in arch/x86/kernel x86: use WARN() in arch/x86/mm/ioremap.c werror: fix pci calgary x86: fix oprofile + hibernation badness x86, SGI UV: hardcode the TLB flush interrupt system vector x86: fix Xorg startup/shutdown slowdown with PAT x86: fix "kernel won't boot on a Cyrix MediaGXm (Geode)" x86 iommu: remove unneeded parenthesis
2008-08-22x86: work around MTRR mask setting, v2Ingo Molnar
improve the debug printout: - make it actually display something - print it only once would be nice to have a WARN_ONCE() facility, to feed such things to kerneloops.org. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-22x86: fix section mismatch warning - uv_cpu_initMarcin Slusarz
WARNING: vmlinux.o(.cpuinit.text+0x3cc4): Section mismatch in reference from the function uv_cpu_init() to the function .init.text:uv_system_init() The function __cpuinit uv_cpu_init() references a function __init uv_system_init(). If uv_system_init is only used by uv_cpu_init then annotate uv_system_init with a matching annotation. uv_system_init was ment to be called only once, so do it from codepath (native_smp_prepare_cpus) which is called once, right before activation of other cpus (smp_init). Note: old code relied on uv_node_to_blade being initialized to 0, but it'a not initialized from anywhere. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Acked-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-22x86: fix VMI for early paramsAlok Kataria
while fixing a different bug i moved the call to vmi_init before early params could be parsed. This broke the vmi specific commandline parameters. Fix that, by moving vmi initialization after kernel has got a chance to parse early parameters. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-22x86: fix two modpost warnings in mm/init_64.cJan Beulich
early_io{re,un}map() are __init and hence can't be called from __meminit functions. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-22x86: fix 1:1 mapping init on 64-bit (memory hotplug case)Jan Beulich
While I don't have a hotplug capable system at hand, I think two issues need fixing: - pud_phys (in kernel_physical_ampping_init()) would remain uninitialized in the after_bootmem case - the locking done just around phys_pmd_{init,update}() would leave out pgd updates, and it was needlessly covering code portions that do allocations (perhaps using a more friendly gfp value in alloc_low_page() would then be possible) Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-22x86: work around MTRR mask settingYinghai Lu
Joshua Hoblitt reported that only 3 GB of his 16 GB of RAM is usable. Booting with mtrr_show showed us the BIOS-initialized MTRR settings - which are all wrong. So the root cause is that the BIOS has not set the mask correctly: > [ 0.429971] MSR00000200: 00000000d0000000 > [ 0.433305] MSR00000201: 0000000ff0000800 > should be ==> [ 0.433305] MSR00000201: 0000003ff0000800 > > [ 0.436638] MSR00000202: 00000000e0000000 > [ 0.439971] MSR00000203: 0000000fe0000800 > should be ==> [ 0.439971] MSR00000203: 0000003fe0000800 > > [ 0.443304] MSR00000204: 0000000000000006 > [ 0.446637] MSR00000205: 0000000c00000800 > should be ==> [ 0.446637] MSR00000205: 0000003c00000800 > > [ 0.449970] MSR00000206: 0000000400000006 > [ 0.453303] MSR00000207: 0000000fe0000800 > should be ==> [ 0.453303] MSR00000207: 0000003fe0000800 > > [ 0.456636] MSR00000208: 0000000420000006 > [ 0.459970] MSR00000209: 0000000ff0000800 > should be ==> [ 0.459970] MSR00000209: 0000003ff0000800 So detect this borkage and add the prefix 111. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 5212/1: pxa: fix build error when CPU_PXA310 is not defined [ARM] 5208/1: fsg-setup.c fixes [ARM] fix impd1.c build warning [ARM] e400 config use MFP [ARM] e740 config use MFP [ARM] Fix eseries IRQ limit [ARM] clocklib: Update users of aliases to new API [ARM] clocklib: Allow dynamic alias creation [ARM] eseries: whitespace fixes and cleanup
2008-08-21[S390] Update default configuration.Martin Schwidefsky
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-08-21[S390] fix ext2_find_next_bitEric Sandeen
ext4 does not work on s390 because ext2_find_next_bit is broken. Fortunately this function is only used by ext4. The function uses ffs which does not work analog to ffz. The result of ffs has an offset of 1 which is not taken into account. To fix this use the low level __ffs_word function directly instead of the ill defined ffs. In addition the patch improves find_next_zero_bit and ext2_find_next_zero_bit by passing the bit offset into __ffz_word instead of adding it after the function call returned. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-08-21[S390] Remove unneeded spinlock initialization.Heiko Carstens
Remove the now unneeded s390_idle.lock spinlock initialization after Josef Sipek did it the right way in arch/s390/kernel/process.c. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-08-21[S390] Fix uninitialized spinlock useJosef 'Jeff' Sipek
Ever since commit 43ca5c3a1cefdaa09231d64485b8f676118bf1e0 ([S390] Convert monitor calls to function calls.), the kernel refused to IPL with spinlock debugging enabled. BUG: spinlock bad magic on CPU#0, swapper/0 lock: 00000000003a4668, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 CPU: 0 Not tainted 2.6.25 #1 Process swapper (pid: 0, task: 000000000034f958, ksp: 0000000000377d60) 0000000000377ab8 0000000000352628 0000000000377d60 0000000000377d60 0000000000016af4 00000000fffff7b5 0000000000377d60 0000000000000000 0000000000000000 0000000000377a18 0000000000000009 0000000000377a18 0000000000377a78 000000000023c920 0000000000016af4 0000000000377a18 0000000000000005 0000000000000000 0000000000377b58 0000000000377ab8 Call Trace: ([<0000000000016a60>] show_trace+0xdc/0x108) [<0000000000016b4e>] show_stack+0xc2/0xfc [<0000000000016c9a>] dump_stack+0xb2/0xc0 [<0000000000172dd4>] Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-08-21x86: PAT Update validate_pat_support for intel CPUsvenkatesh.pallipadi@intel.com
Pentium III and Core Solo/Duo CPUs have an erratum " Page with PAT set to WC while associated MTRR is UC may consolidate to UC " which can result in WC setting in PAT to be ineffective. We will disable PAT on such CPUs, so that we can continue to use MTRR WC setting. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21devmem, x86: PAT Change /dev/mem mmap with O_SYNC to use UC_MINUSvenkatesh.pallipadi@intel.com
All kernel mappings like ioremap(), etc uses UC_MINUS as the type. /dev/mem mappings with /dev/mem being opened with O_SYNC however was using UC, resulting in a conflict with /dev/mem mmap failing. This seems to be affecting some apps (one being flashrom) which are using O_SYNC and which were working before. Switch /dev/mem with O_SYNC also to UC_MINUS. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21x86: PAT proper tracking of set_memory_uc and friendsvenkatesh.pallipadi@intel.com
Big thinko in pat memtype tracking code. reserve_memtype should be called with physical address and not virtual address. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21x86: fix BUG: unable to handle kernel paging request (numaq_tsc_disable)Vegard Nossum
This section mismatch: >> Seems to be a section mismatch; init_intel() is __cpuinit while >> numaq_tsc_disable() is __init. Seems to be introduced in: >> >> commit 64898a8bad8c94ad7a4bd5cc86b66edfbb081f4a >> Author: Yinghai Lu <yhlu.kernel@gmail.com> >> Date: Sat Jul 19 18:01:16 2008 -0700 >> >> x86: extend and use x86_quirks to clean up NUMAQ code > > Oops, I am wrong about numaq_tsc_disable() being __init. Still, I > believe that Yinghai might be able to say what's really wrong :-) Would lead to this crash: BUG: unable to handle kernel paging request at c08a45f0 IP: [<c08a45f0>] numaq_tsc_disable+0x0/0x40 Fixed by the patch below. Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21x86: export pv_lock_ops non-GPLJeremy Fitzhardinge
None of the spinlock API is exported GPL, so there's no reason for pv_lock_ops to be. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: drago01 <drago01@gmail.com>
2008-08-21x86, mmiotrace: silence section mismatch warning - leave_uniprocessorMarcin Slusarz
WARNING: vmlinux.o(.text+0x180af): Section mismatch in reference from the function leave_uniprocessor() to the function .cpuinit.text:cpu_up() The function leave_uniprocessor() references the function __cpuinit cpu_up(). This is often because leave_uniprocessor lacks a __cpuinit annotation or the annotation of cpu_up is wrong. leave_uniprocessor calls cpu_up only when CONFIG_HOTPLUG_CPU is set, so it can be safely annotated as __ref Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Pekka Paalanen <pq@iki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Ingo Molnar <mingo@elte.hu> Cc: Pekka Paalanen <pq@iki.fi>
2008-08-21x86: use WARN() in arch/x86/kernelArjan van de Ven
Use WARN() instead of a printk+WARN_ON() pair; this way the message becomes part of the warning section for better reporting/collection. This also allowed the folding of some if()'s into the WARN() Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: akpm@linux-foundation.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21x86: use WARN() in arch/x86/mm/ioremap.cArjan van de Ven
Use WARN() instead of a printk+WARN_ON() pair; this way the message becomes part of the warning section for better reporting/collection. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: akpm@linux-foundation.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21werror: fix pci calgaryDavid Howells
Fix an integer comparison always false warning in the PCI Calgary 64 driver. A u8 is being compared to something that's 512 by default, resulting in the following warning: arch/x86/kernel/pci-calgary_64.c:1285: warning: comparison is always false due to limited range of data type This was introduced by patch b34e90b8f0f30151349134f87b5dc6ef75a5218c. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-20[ARM] 5212/1: pxa: fix build error when CPU_PXA310 is not definedMike Rapoport
Fix arch/arm/mach-pxa/pxa300.c:94: error: 'CKEN_MMC3' undeclared here (not in a function) when building for PXA300. Signed-off-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-20Merge branch 'sh/for-2.6.27' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Provide a FLAT_PLAT_INIT() definition. binfmt_flat: Stub in a FLAT_PLAT_INIT(). video: export sh_mobile_lcdc panel size sh: select memchunk size using kernel cmdline sh: export sh7723 VEU as VEU2H input: migor_ts compile and detection fix sh: remove MSTPCR defines from Migo-R header file sh: Update sh7763rdp defconfig sh: Add support sh7760fb to sh7763rdp board sh: Add support sh_eth to sh7763rdp board sh: Disable 64kB hugetlbpage size when using 64kB PAGE_SIZE. sh: Don't export __{s,u}divsi3_i4i from SH-2 libgcc. fix SH7705_CACHE_32KB compilation sh: mach-x3proto: Fix up smc91x platform data.
2008-08-20Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: powerpc: Fix vio_bus_probe oops on probe error powerpc/ibmebus: Restore "name" sysfs attribute on ibmebus devices powerpc: Fix /dev/oldmem interface for kdump powerpc/spufs: Remove invalid semicolon after if statement powerpc/spufs: reference context while dropping state mutex in scheduler powerpc/spufs: fix npc setting for NOSCHED contexts
2008-08-20x86: fix oprofile + hibernation badnessAndi Kleen
Vegard Nossum reported oprofile + hibernation problems: > Now some warnings: > > ------------[ cut here ]------------ > WARNING: at /uio/arkimedes/s29/vegardno/git-working/linux-2.6/kernel/smp.c:328 s > mp_call_function_mask+0x194/0x1a0() The usual problem: the suspend function when interrupts are already disabled calls smp_call_function which is not allowed with interrupt off. But at this point all the other CPUs should be already down anyways, so it should be enough to just drop that. This patch should fix that problem at least by fixing cpu hotplug& suspend support. [ mingo@elte.hu: fixed 5 coding style errors. ] Signed-off-by: Andi Kleen <ak@linux.intel.com> Tested-by: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-20x86, SGI UV: hardcode the TLB flush interrupt system vectorCliff Wickman
The UV TLB shootdown mechanism needs a system interrupt vector. Its vector had been hardcoded as 200, but needs to moved to the reserved system vector range so that it does not collide with some device vector. This is still temporary until dynamic system IRQ allocation is provided. But it will be needed when real UV hardware becomes available and runs 2.6.27. Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-20x86: fix Xorg startup/shutdown slowdown with PATVenki Pallipadi
Rene Herman reported significant Xorg startup/shutdown slowdown due to PAT. It turns out that the memtype list has thousands of entries. Add cached_entry to list add routine, in order to speed up the lookup for sequential reserve_memtype calls. Reported-by: Rene Herman <rene.herman@keyaccess.nl> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-20x86: fix "kernel won't boot on a Cyrix MediaGXm (Geode)"Samuel Sieb
Cyrix MediaGXm/Cx5530 Unicorn Revision 1.19.3B has stopped booting starting at v2.6.22. The reason is this commit: > commit f25f64ed5bd3c2932493681bdfdb483ea707da0a > Author: Juergen Beisert <juergen@kreuzholzen.de> > Date: Sun Jul 22 11:12:38 2007 +0200 > > x86: Replace NSC/Cyrix specific chipset access macros by inlined functions. this commit activated a macro which was dormant before due to (buggy) macro side-effects. I've looked through various datasheets and found that the GXm and GXLV Geode processors don't have an incrementor. Remove the incrementor setup entirely. As the incrementor value differs according to clock speed and we would hope that the BIOS configures it correctly, it is probably the right solution. Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-20powerpc: Fix vio_bus_probe oops on probe errorBrian King
When CMO is enabled and booted on a non CMO system and the VIO device's probe function fails, an oops can result since vio_cmo_bus_remove is called when it should not. This fixes it by avoiding the vio_cmo_bus_remove call on platforms that don't implement CMO. cpu 0x0: Vector: 300 (Data Access) at [c00000000e13b3d0] pc: c000000000020d34: .vio_cmo_bus_remove+0xc0/0x1f4 lr: c000000000020ca4: .vio_cmo_bus_remove+0x30/0x1f4 sp: c00000000e13b650 msr: 8000000000009032 dar: 0 dsisr: 40000000 current = 0xc00000000e0566c0 paca = 0xc0000000006f9b80 pid = 2428, comm = modprobe enter ? for help [c00000000e13b6e0] c000000000021d94 .vio_bus_probe+0x2f8/0x33c [c00000000e13b7a0] c00000000029fc88 .driver_probe_device+0x13c/0x200 [c00000000e13b830] c00000000029fdac .__driver_attach+0x60/0xa4 [c00000000e13b8c0] c00000000029f050 .bus_for_each_dev+0x80/0xd8 [c00000000e13b980] c00000000029f9ec .driver_attach+0x28/0x40 [c00000000e13ba00] c00000000029f630 .bus_add_driver+0xd4/0x284 [c00000000e13baa0] c0000000002a01bc .driver_register+0xc4/0x198 [c00000000e13bb50] c00000000002168c .vio_register_driver+0x40/0x5c [c00000000e13bbe0] d0000000003b3f1c .ibmvfc_module_init+0x70/0x109c [ibmvfc] [c00000000e13bc70] c0000000000acf08 .sys_init_module+0x184c/0x1a10 [c00000000e13be30] c000000000008748 syscall_exit+0x0/0x40 Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-20powerpc/ibmebus: Restore "name" sysfs attribute on ibmebus devicesJoachim Fenkes
Recent of_platform changes made of_bus_type_init() overwrite the bus type's .dev_attrs list, meaning that the "name" attribute that ibmebus devices previously had is no longer present. This is a user-visible regression which breaks the userspace eHCA support, since the eHCA userspace driver relies on the name attribute to check for valid adapters. This fixes it by providing the "name" attribute in the generic OF device code instead. Tested on POWER. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-20powerpc: Fix /dev/oldmem interface for kdumpMichael Ellerman
A change to __ioremap() broke reading /dev/oldmem because we're no longer able to ioremap pfn 0 (d177c207, "[PATCH] powerpc: IOMMU: don't ioremap null addresses"). We actually don't need to ioremap for anything that's part of the linear mapping, so just read it directly. Also make sure we're only reading one page or less at a time. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-20Merge branch 'merge' of ↵Paul Mackerras
git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge
2008-08-19Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: add acpi_find_root_bridge_handle PCI: acpi_pcihp: run _OSC on a root bridge x86/PCI: irq and pci_ids patch for Intel Ibex Peak PCHs x86/PCI: allow scanning of 255 PCI busses x86, pci: detect end_bus_number according to acpi/e820 reserved, v2 pci: debug extra pci bus resources pci: debug extra pci resources range
2008-08-19Revert "[CPUFREQ][2/2] preregister support for powernow-k8"Linus Torvalds
This reverts commit 34ae7f35a21694aa5cb8829dc5142c39d73d6ba0, which has been reported to cause a number of problems. During suspend and resume, it apparently causes a crash in a CPU hotplug notifier to happen, although the exact details are sketchy because of the inability to get good traces during the suspend sequence. See buzilla entries http://bugzilla.kernel.org/show_bug.cgi?id=11296 http://bugzilla.kernel.org/show_bug.cgi?id=11339 for more examples and details. [ Mark: "Revert the patch for now. I'm still looking into getting a reliable reproduction and I do not have a fix at this time." ] Requested-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Mark Langsdorf <mark.langsdorf@amd.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Linus Torvalds <torvalds@inux-foundation.org>
2008-08-19[ARM] 5208/1: fsg-setup.c fixesTomasz Chmielewski
This patch against 2.6.27-rc3 does the following changes to FSG-3 setup code: 1) Enable RTC on FSG-3 (proper name is needed). This change is needed due to a recent change in i2c. 2) i variable is only used when compiling for big endian. So move its declaration to ARMEB ifdef to silence the warning when compiling for LE. Mailing list link: http://lists.arm.linux.org.uk/lurker/message/20080813.091556.cae2917e.en.html Signed-off-by: Tomasz Chmielewski <mangoo@wpkg.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-19powerpc/spufs: Remove invalid semicolon after if statementIlpo Järvinen
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-08-18Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] use generic compat_old_sys_readdir [IA64] pci_acpi_scan_root cleanup [IA64] Shrink shadow_flush_counts to a short array to save 8k of per_cpu area. [IA64] Remove sn2_defconfig.
2008-08-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: ata: add missing ATA_* defines ata: add missing ATA_CMD_* defines ata: add missing ATA_ID_* defines (take 2) sgiioc4: fixup message on resource allocation failure ide-cd: use bcd2bin/bin2bcd cdrom: handle TOC gdrom: add dummy audio_ioctl handler viocd: add dummy audio ioctl handler cleanup powerpc/include/asm/ide.h drivers/ide/pci/: use __devexit_p()
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