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2007-04-16[PATCH] x86: Fix potential overflow in perfctr reservationAndi Kleen
While reviewing this code again I found a potential overflow of the bitmap. The p4 oprofile can theoretically set bits beyond the reservation bitmap for specific configurations. Avoid that by sizing the bitmaps properly. Signed-off-by: Andi Kleen <ak@suse.de>
2007-04-16[PATCH] x86: Fix gcc 4.2 _proxy_pda workaroundAndi Kleen
Due to an over aggressive optimizer gcc 4.2 cannot optimize away _proxy_pda in all cases (counter intuitive, but true). This breaks loading of some modules. The earlier workaround to just export a dummy symbol didn't work unfortunately because the module code ignores exports with 0 value. Make it 1 instead. Signed-off-by: Andi Kleen <ak@suse.de>
2007-04-14Fix VMI relocation processing logic errorZachary Amsden
Fix logic error in VMI relocation processing. NOPs would always cause a BUG_ON to fire because the != RELOCATION_NONE in the first if clause precluding the == VMI_RELOCATION_NOP in the second clause. Make these direct equality tests and just warn for unsupported relocation types (which should never happen), falling back to native in that case. Thanks to Anthony Liguori for noting this! Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-14failsafe mechanism to HPET clock calibrationRavikiran G Thirumalai
Provide a failsafe mechanism to avoid kernel spinning forever at read_hpet_tsc during early kernel bootup. This failsafe mechanism was originally introduced in commit 2f7a2a79c3ebb44f8b1b7d9b4fd3a650eb69e544, but looks like the hpet split from time.c lost it again. This reintroduces the failsafe mechanism Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Cc: Jack Steiner <steiner@sgi.com> Cc: john stultz <johnstul@us.ibm.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-13Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Fix inline directive in pci_iommu.c [SPARC64]: Fix arg passing to compat_sys_ipc(). [SPARC]: Fix section mismatch warnings in pci.c and pcic.c [SUNRPC]: Make sure on-stack cmsg buffer is properly aligned. [SPARC]: avoid CHILD_MAX and OPEN_MAX constants [SPARC64]: Fix SBUS IOMMU allocation code.
2007-04-13[SPARC64]: Fix inline directive in pci_iommu.cTom "spot" Callaway
While building a test kernel for the new esp driver (against git-current), I hit this bug. Trivial fix, put the inline declaration in the right place. :) Signed-off-by: Tom "spot" Callaway <tcallawa@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-13[SPARC64]: Fix arg passing to compat_sys_ipc().David S. Miller
Do not sign extend args using the sys32_ipc stub, that is buggy and unnecessary. Based upon an excellent report by Mikael Pettersson. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-12[SPARC]: Fix section mismatch warnings in pci.c and pcic.cRobert Reif
Fix section mismatch in arch/sparc/kernel/pcic.c and arch/sparc64/kernel/pci.c. Signed-off-by: Robert Reif <reif@earthlink.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-12[SPARC]: avoid CHILD_MAX and OPEN_MAX constantsRoland McGrath
I don't figure anyone really cares about SunOS syscall emulation, and I certainly don't. But I'm getting rid of uses of the OPEN_MAX and CHILD_MAX compile-time constant, and these are almost the only ones. OPEN_MAX is a bogus constant with no meaning about anything. The RLIMIT_NOFILE resource limit is what sysconf (_SC_OPEN_MAX) actually wants to return. The CHILD_MAX cases weren't actually using anything I want to get rid of, but I noticed that they are there and are wrong too. The CHILD_MAX value is not really unlimited as a -1 return from sysconf indicates. The RLIMIT_NPROC resource limit is what sysconf (_SC_CHILD_MAX) wants to return. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-12[PPC] Fix compilation and linking errors of mpc86xads build.Vitaly Bordug
Fix compilation of mpc866ads_setup.c Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-04-12[PPC] Fix compilation and linking errors of mpc885ads build.Vitaly Bordug
Fix compilation of mpc885ads_setup.c Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-04-12[PPC] MPC8272 ADS compile fixed, defconfig refreshed.Vitaly Bordug
Fix compilation of mpc8272ads_setup.c Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-04-11[SPARC64]: Fix SBUS IOMMU allocation code.David S. Miller
There are several IOMMU allocator bugs. Instead of trying to fix this overly complicated code, just mirror the PCI IOMMU arena allocator which is very stable and well stress tested. I tried to make the code as identical as possible so we can switch sun4u PCI and SBUS over to a common piece of IOMMU code. All that will be need are two callbacks, one to do a full IOMMU flush and one to do a streaming buffer flush. This patch gets rid of a lot of hangs and mysterious crashes on SBUS sparc64 systems, at least for me. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-12[POWERPC] mpc52xx_pic: fix main interrupt maskingDomen Puncer
The bit setting was off by one. Tested with RTC and GPIO_WKUP interrupts. Signed-off-by: Domen Puncer <domen.puncer@telargo.com> Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-10Merge 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] SGI Altix : fix pcibr_dmamap_ate32() bug [IA64] Fix CPU freq displayed in /proc/cpuinfo [IA64] Fix wrong assumption about irq and vector in msi_ia64.c [IA64] BTE error timer fix
2007-04-08[PATCH] i386: irqbalance_disable() section fixAndrew Morton
WARNING: arch/i386/kernel/built-in.o - Section mismatch: reference to .init.text:irqbalance_disable from .text between 'quirk_intel_irqbalance' (at offset 0x80a5) and 'i8237A_suspend' Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-08[PATCH] x86_64 early quirks: fix early_qrk[] section tagAndrew Morton
WARNING: arch/x86_64/kernel/built-in.o - Section mismatch: reference to .init.text:nvidia_bugs from .data between 'early_qrk' (at offset 0x8428) and 'enable_cpu_hotplug' WARNING: arch/x86_64/kernel/built-in.o - Section mismatch: reference to .init.text:via_bugs from .data between 'early_qrk' (at offset 0x8438) and 'enable_cpu_hotplug' WARNING: arch/x86_64/kernel/built-in.o - Section mismatch: reference to .init.text:ati_bugs from .data between 'early_qrk' (at offset 0x8448) and 'enable_cpu_hotplug' The compiler is putting it into .data because the __initdata is in the wrong place. Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-08[PATCH] Proper fix for highmem kmap_atomic functions for VMI for 2.6.21Zachary Amsden
Since lazy MMU batching mode still allows interrupts to enter, it is possible for interrupt handlers to try to use kmap_atomic, which fails when lazy mode is active, since the PTE update to highmem will be delayed. The best workaround is to issue an explicit flush in kmap_atomic_functions case; this is the only way nested PTE updates can happen in the interrupt handler. Thanks to Jeremy Fitzhardinge for noting the bug and suggestions on a fix. This patch gets reverted again when we start 2.6.22 and the bug gets fixed differently. Signed-off-by: Zachary Amsden <zach@vmware.com> Cc: Andi Kleen <ak@muc.de> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-06[IA64] SGI Altix : fix pcibr_dmamap_ate32() bugMike Habeck
On a SGI Altix TIOCP based PCI bus we need to include the ATE_PIO attribute bit if we're mapping a 32bit MSI address. Signed-off-by: Mike Habeck <habeck@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-04-06[IA64] Fix CPU freq displayed in /proc/cpuinfoVenki Pallipadi
My patch: git commit=95235ca2c20ac0b31a8eb39e2d599bcc3e9c9a10 introduced a bug in IA64 cpuinfo output. Patch changed the proc_freq from 1HZ resolution to 1KHz resolution, but left format string unchanged at " %lu.%06lu". Below is the fix. Thanks to Bjorn for catching this. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-04-06[IA64] Fix wrong assumption about irq and vector in msi_ia64.cIshimatsu Yasuaki
This patch fixes a wrong assumption in ia64 MSI code that IRQ equals vector. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-04-06[IA64] BTE error timer fixRuss Anderson
The bte recovery_timer was not being set correctly. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-04-02Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6Linus Torvalds
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: [PATCH] x86: Don't probe for DDC on VBE1.2 [PATCH] x86-64: Increase NMI watchdog probing timeout [PATCH] x86-64: Let oprofile reserve MSR on all CPUs [PATCH] x86-64: Disable local APIC timer use on AMD systems with C1E
2007-04-02[PATCH] i386: fix file_read_actor() and pipe_read() for original i386 systemsThomas Gleixner
The __copy_to_user_inatomic() calls in file_read_actor() and pipe_read() are broken on original i386 machines, where WP-works-ok == false, as __copy_to_user_inatomic() on such systems calls functions which might sleep and/or contain cond_resched() calls inside of a kmap_atomic() region. The original check for WP-works-ok was in access_ok(), but got moved during the 2.5 series to fix a race vs. swap. Return the number of bytes to copy in the case where we are in an atomic region, so the non atomic code pathes in file_read_actor() and pipe_read() are taken. This could be optimized to avoid the kmap_atomicby moving the check for WP-works-ok into fault_in_pages_writeable(), but this is more intrusive and can be done later. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-02[PATCH] Fix microcode-related suspend problemRafael J. Wysocki
Fix the regression resulting from the recent change of suspend code ordering that causes systems based on Intel x86 CPUs using the microcode driver to hang during the resume. The problem occurs since the microcode driver uses request_firmware() in its CPU hotplug notifier, which is called after tasks has been frozen and hangs. It can be fixed by telling the microcode driver to use the microcode stored in memory during the resume instead of trying to load it from disk. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Adrian Bunk <bunk@stusta.de> Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk> Cc: Pavel Machek <pavel@ucw.cz> Cc: Maxim <maximlevitsky@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-02[PATCH] uml: fix unreasonably long udelayPaolo 'Blaisorblade' Giarrusso
Currently we have a confused udelay implementation. * __const_udelay does not accept usecs but xloops in i386 and x86_64 * our implementation requires usecs as arg * it gets a xloops count when called by asm/arch/delay.h Bugs related to this (extremely long shutdown times) where reported by some x86_64 users, especially using Device Mapper. To hit this bug, a compile-time constant time parameter must be passed - that's why UML seems to work most times. Fix this with a simple udelay implementation. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-02[PATCH] x86: Don't probe for DDC on VBE1.2Zwane Mwaikambo
VBE1.2 doesn't support function 15h (DDC) resulting in a 'hang' whilst uncompressing kernel with some video cards. Make sure we check VBE version before fiddling around with DDC. http://bugzilla.kernel.org/show_bug.cgi?id=1458 Opened: 2003-10-30 09:12 Last update: 2007-02-13 22:03 Much thanks to Tobias Hain for help in testing and investigating the bug. Tested on; i386, Chips & Technologies 65548 VESA VBE 1.2 CONFIG_VIDEO_SELECT=Y CONFIG_FIRMWARE_EDID=Y Untested on x86_64. Signed-off-by: Zwane Mwaikambo <zwane@infradead.org> Signed-off-by: Andi Kleen <ak@suse.de>
2007-04-02[PATCH] x86-64: Increase NMI watchdog probing timeoutAndi Kleen
A 4 core Opteron needs longer than 10 ticks for this. Signed-off-by: Andi Kleen <ak@suse.de>
2007-04-02[PATCH] x86-64: Let oprofile reserve MSR on all CPUsAndi Kleen
The MSR reservation is per CPU and oprofile would only allocate them on the CPU it was initialized on. Change this to handle all CPUs. This also fixes a warning about unprotected use of smp_processor_id() in preemptible kernels. Signed-off-by: Andi Kleen <ak@suse.de>
2007-04-02[PATCH] x86-64: Disable local APIC timer use on AMD systems with C1EAndi Kleen
AMD dual core laptops with C1E do not run the APIC timer correctly when they go idle. Previously the code assumed this only happened on C2 or deeper. But not all of these systems report support C2. Use a AMD supplied snippet to detect C1E being enabled and then disable local apic timer use. This supercedes an earlier workaround using DMI detection of specific systems. Thanks to Mark Langsdorf for the detection snippet. Signed-off-by: Andi Kleen <ak@suse.de>
2007-04-01Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 4298/1: fix memory barriers for DMA coherent and SMP platforms [ARM] 4295/2: Fix error-handling in pxaficp_ir.c (version 2) [ARM] Fix __NR_kexec_load [ARM] Export dma_channel_active() [ARM] 4296/1: ixp4xx: compile fix [ARM] 4289/1: AT91: SAM9260 NAND flash timing
2007-03-31[ARM] Export dma_channel_active()Russell King
dma_channel_active() is used by some modules and is part of our DMA API, so export it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-03-29Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] SMTC: Fix recursion in instant IPI replay code. [MIPS] BCM1480: Fix setting of irq affinity. [MIPS] do_page_fault() needs to use raw_smp_processor_id(). [MIPS] SMTC: Fix false trigger of debug code on single VPE. [MIPS] SMTC: irq_{enter,leave} and kstats keeping for relayed timer ints. [MIPS] lockdep: Deal with interrupt disable hazard in TRACE_IRQFLAGS [MIPS] lockdep: Handle interrupts in R3000 style c0_status register. [MIPS] MV64340: Add missing prototype for mv64340_irq_init(). [MIPS] MT: MIPS_MT_SMTC_INSTANT_REPLAY currently conflicts with PREEMPT. [MIPS] EV64120: Include <asm/irq.h> to fix warning. [MIPS] Ocelot: Fix warning. [MIPS] Ocelot: Give PMON_v1_setup a proper prototype.
2007-03-29Merge 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] Fix arch/ia64/pci/pci.c:571: warning: `return' with a value [IA64] Speed up boot - skip unnecessary clock calibration [IA64] bugfix stack layout upside-down [IA64] Fix possible invalid memory access in ia64_setup_msi_irq()
2007-03-29[MIPS] SMTC: Fix recursion in instant IPI replay code.Ralf Baechle
local_irq_restore -> raw_local_irq_restore -> irq_restore_epilog -> smtc_ipi_replay -> smtc_ipi_dq -> spin_unlock_irqrestore -> _spin_unlock_irqrestore -> local_irq_restore The recursion does abort when there is no more IPI queued for a CPU, so this isn't usually fatal which is why we got away with this for so long until this was discovered by code inspection. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] BCM1480: Fix setting of irq affinity.Mark Mason
Signed-off-by: Mark Mason <mason@broadcom.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] do_page_fault() needs to use raw_smp_processor_id().Ralf Baechle
Original patch posted by Deepak Saxena <dsaxena@plexity.net>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] SMTC: Fix false trigger of debug code on single VPE.Ralf Baechle
Make smtc_setup_irq() update the list of interrupts which need to be watched by the debug code itself. Also there is no need to initialize the IPI swint when running with a single VPE, so don't initialize it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] SMTC: irq_{enter,leave} and kstats keeping for relayed timer ints.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] lockdep: Deal with interrupt disable hazard in TRACE_IRQFLAGSChris Dearman
Between the mtc0 or di instruction that disables interrupts and the following hazard barrier a processor may still take interrupts. If an interrupt is taken after interrupts are disabled but before the state is updated it will appear to restore_all that it is incorrectly returning with interrupts disabled. Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] lockdep: Handle interrupts in R3000 style c0_status register.Chris Dearman
Check the IEP bit for R3000 style processors when checking to see if interrupts will be reenabled in restore_all. Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] MT: MIPS_MT_SMTC_INSTANT_REPLAY currently conflicts with PREEMPT.Ralf Baechle
So until MIPS_MT_SMTC_INSTANT_REPLAY has been rewritten to solve this issue, don't allow selecting it with PREEMPT. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] EV64120: Include <asm/irq.h> to fix warning.Ralf Baechle
arch/mips/pci/pci-ev64120.c:10: warning: implicit declaration of function 'allocate_irqno' Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] Ocelot: Fix warning.Ralf Baechle
Remove unused variable. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[MIPS] Ocelot: Give PMON_v1_setup a proper prototype.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-29[IA64] Fix arch/ia64/pci/pci.c:571: warning: `return' with a valueTony Luck
Typo/thinko in bba6f6fc68e74d4572028646f61dd3505a68747e Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-03-29[IA64] Speed up boot - skip unnecessary clock calibrationJack Steiner
Skip clock calibration if cpu being brought online is exactly the same speed, stepping, etc., as the previous cpu. This significantly reduces the time to boot very large systems. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-03-29[IA64] bugfix stack layout upside-downKAMEZAWA Hiroyuki
ia64 expects following vm layout: == low memory [register-stack grows up] [memory-stack grows down] == high memory But the code assigns the base of the register stack at the maximum stack size offset from the fixed address where the stack *might* start. Stack randomization will result in the memory stack starting at a lower address than this, and if the user has set a low stack limit with "ulimit -s", then you can end up with the register stack above the memory stack (or if you were very unlucky right on top of it!). Fix: Calculate the base address for the register stack starting from the actual address of the memory stack. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-03-29[IA64] Fix possible invalid memory access in ia64_setup_msi_irq()Kenji Kaneshige
The following 'if' statement in ia64_setup_msi_irq() always fails even if create_irq() returns <0 value, because variable 'irq' is defined as unsigned int. It would cause invalid memory access. irq = create_irq(); if (irq < 0) return irq; Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-03-29[POWERPC] qe: Fix QUICC Engine SDMA setup errorsChuck Meade
Correct the alignment of the internal buffer used by the QUICC Engine SDMA controller to 4Kbytes. Correct the shift direction in the logic that sets up the SDMR register for the QUICC Engine SDMA controller. Signed-off-by: Chuck Meade <chuckmeade@mindspring.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>