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* MIPS: Remove usage of CEVT_R4K_LIB config option.Ralf Baechle2012-12-13
| | | | | | | | | | | | | | | | | | Manuel Lauss <manuel.lauss@gmail.com> writes: I introduced it as a fallback because early revisions of Alchemy hardware we shipped had a non-functional 32kHz timer and had to rely on the r4k timer instead. Previously the r4k timer was initialized regardless, but it's useless with the "wait" instruction. So long story short: I need either the on-chip 32kHz timer OR the r4k timer if the 32kHz one is unusable, but not both, and r4k timer is useless when au1k_idle is in use. The current in-kernel Alchemy boards all work with the 32kHz timer, so I'm not against removing R4K_LIB symbols. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Remove usage of CSRC_R4K_LIB config option.Steven J. Hill2012-12-13
| | | | | | | | | | | | | | | | | | | Manuel Lauss <manuel.lauss@gmail.com> writes: I introduced it as a fallback because early revisions of Alchemy hardware we shipped had a non-functional 32kHz timer and had to rely on the r4k timer instead. Previously the r4k timer was initialized regardless, but it's useless with the "wait" instruction. So long story short: I need either the on-chip 32kHz timer OR the r4k timer if the 32kHz one is unusable, but not both, and r4k timer is useless when au1k_idle is in use. The current in-kernel Alchemy boards all work with the 32kHz timer, so I'm not against removing R4K_LIB symbols. Signed-off-by: Steven J. Hill <sjhill@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: AR7: use part_probe_types to specificy the partition parser to useFlorian Fainelli2012-12-13
| | | | | | | | | | | | This patch changes the physmap-flash platform data on AR7 to pass the correct partition parser: ar7part to used by the "physmap-flash" mapping driver so we get the partitions probed correctly. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: blogic@openwrt.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4654/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Fix typo in "endianness" in dma.cMasanari Iida2012-12-13
| | | | | | | | | | Correct spelling typo ENDIANESS to ENDIANNESS in arc/mips/lantiq/xway/dma.c Signed-off-by: Masanari Iida <standby24x7@gmail.com> Cc: trivial@kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/4613/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Kconfig: Rename several firmware related config symbols.Ralf Baechle2012-12-13
| | | | | | | | | | | | With the upcoming merge of the ARC architecture there is a small likelyhood of conflicting use for the CONFIG_ARC config symbol. Rename it to CONFIG_FW_ARC. Also rename CONFIG_ARC32 to CONFIG_FW_ARC32, CONFIG_ARC64 to CONFIG_FW_ARC64. For consistence also rename CONFIG_SNIPROM to CONFIG_FW_SNIPROM and CONFIG_CFE to CONFIG_FW_CFE. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Add kexec and kdump supportRalf Baechle2012-12-13
| | | | | | | | | | | | [ralf@linux-mips.org: Original patch by Maxim Uvarov <muvarov@gmail.com> with plenty of further shining, polishing, debugging and testing by me.] Signed-off-by: Maxim Uvarov <muvarov@gmail.com> Cc: linux-mips@linux-mips.org Cc: kexec@lists.infradead.org Cc: horms@verge.net.au Patchwork: https://patchwork.linux-mips.org/patch/1026/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: kdump: Add supportRalf Baechle2012-12-13
| | | | | | | | | | | | [ralf@linux-mips.org: Original patch by Maxim Uvarov <muvarov@gmail.com> with plenty of further shining, polishing, debugging and testing by me.] Signed-off-by: Maxim Uvarov <muvarov@gmail.com> Cc: linux-mips@linux-mips.org Cc: kexec@lists.infradead.org Cc: horms@verge.net.au Patchwork: https://patchwork.linux-mips.org/patch/1025/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Kconfig: Enable drivers/firmware/KconfigRalf Baechle2012-12-12
| | | | | | | | This allows the use of /sys/firmware/memmap for MIPS platforms. kexec-tools may use /sys/firmware/memmap though current versions parse /proc/iomem. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix harmlessly missing else statement.Ralf Baechle2012-12-12
| | | | | | | | | | | | | The actual bug is a missing else statement - but really this should be expressed using a switch() statement. Found by Al Viro who writes "the funny thing is, it *does* work only because r2 is syscall number and syscall number around 512 => return value being ENOSYS and not one of ERESTART... so we really can't hit the first if and emerge from it with ERESTART_RESTARTBLOCK. still wrong to write it that way..." Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Remove leftovers from the IRIX binary compat code.Ralf Baechle2012-12-12
| | | | | | | | | 2957c9e61ee9c37e7ebf2c8acab03e073fe942fd (kernel.org) rsp. b934da913f236bca00c41d9e386e980586000461 (lmo) [[MIPS] IRIX: Goodbye and thanks for all the fish] left two fields in struct thread_struct which were only being used for the IRIX compat code. Remove them. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Simplify code by assuming CONFIG_64BIT is always set.Ralf Baechle2012-12-12
| | | | | | No 32-bit kernels supported on Octeon. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Remove use of CONFIG_64BIT_PHYS_ADDR.Ralf Baechle2012-12-12
| | | | | | | Only supporting 64-bit kernels there is no point in depending on this symbol. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Remove highmem code.Ralf Baechle2012-12-12
| | | | | | | On Cavium hardware only 64-bit kernels are supported so CONFIG_HIGHMEM is never set. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Cavium: Update defconfigDavid Daney2012-12-12
| | | | | | | | | | | Turn on support for most hardware present on OCTEON development boards as well as some filesystems and SATA controllers so we can boot off of a disk or CF Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4426/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Transparent Huge Pages supportRalf Baechle2012-12-12
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Cavium: Add EDAC support.Ralf Baechle2012-12-12
| | | | | | | | | | | | | | | | | | Drivers for EDAC on Cavium. Supported subsystems are: o CPU primary caches. These are parity protected only, so only error reporting. o Second level cache - ECC protected, provides SECDED. o Memory: ECC / SECDEC if used with suitable DRAM modules. The driver will will only initialize if ECC is enabled on a system so is safe to run on non-ECC memory. o PCI: Parity error reporting Since it is very hard to test this sort of code the implementation is very conservative and uses polling where possible for now. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Reviewed-by: Borislav Petkov <borislav.petkov@amd.com>
* MIPS: Control huge tlb support via Kconfig symbol MIPS_HUGE_TLB_SUPPORTDavid Daney2012-12-12
| | | | | | | | We need Huge TLBs for HUGETLB_PAGE, or the soon to follow TRANSPARENT_HUGEPAGE. collect this information under a single Kconfig symbol. Signed-off-by: David Daney <david.daney@cavium.com>
* MIPS: page.h: Provide more readable definition for PAGE_MASK.Ralf Baechle2012-12-12
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: tlbex: Better debug output.Ralf Baechle2012-11-26
| | | | | | | | | | | | Pgtable bits are assigned dynamically depending on processor feature and statically based on kernel configuration. To make sense out of the disassembled TLB exception handlers a list of the actual assignments used for a particular configuration and hardware setup can be very useful. Output the actual TLB exception handlers in a format that simplifies their post processsing from dmesg output. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: N32: Remove unused defines.Ralf Baechle2012-11-26
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: pgtable.h: Remove commented out debugging printk.Ralf Baechle2012-11-26
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Remove R5000A.Ralf Baechle2012-11-26
| | | | | | | From a software perspective R5000 and R5000A are the same thing which is why the symbol CPU_R5000A never got used, so finally delete it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'merge' of ↵Linus Torvalds2012-11-25
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc EEH bugfixes from Benjamin Herrenschmidt. Two one-liner fixes for the new EEH code. * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/eeh: Do not invalidate PE properly powerpc/pseries: Fix oops with MSIs when missing EEH PEs
| * powerpc/eeh: Do not invalidate PE properlyGavin Shan2012-11-25
| | | | | | | | | | | | | | | | | | | | | | | | While the EEH does recovery on the specific PE that has PCI errors, the PCI devices belonging to the PE will be removed and the PE will be marked as invalid since we still need the information stored in the PE. We only invalidate the PE when it doesn't have associated EEH devices and valid child PEs. However, the code used to check that is wrong. The patch fixes that. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * powerpc/pseries: Fix oops with MSIs when missing EEH PEsAlexey Kardashevskiy2012-11-22
| | | | | | | | | | | | | | | | | | The new EEH code introduced a small regression, if the EEH PEs are missin (which happens currently in qemu for example), it will deref a NULL pointer in the MSI code. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2012-11-25
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS fixes from Ralf Baechle: "Three issues fixed accross the field: - Some functions that were recently outlined as part of a preemption fix were causing problems with function tracing. - The recently merged in-kernel MPI library uses very outdated headers that contain MIPS-specific code which won't build on with gcc 4.4 or newer. - The MIPS non-NUMA memory initialization was making only a very half-baked attempt at merging adjacent memory ranges. This kept the code simple enough but is now causing issues with kexec." * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MPI: Fix compilation on MIPS with GCC 4.4 and newer MIPS: Fix crash that occurs when function tracing is enabled MIPS: Merge overlapping bootmem ranges
| * | MIPS: Fix crash that occurs when function tracing is enabledAl Cooper2012-11-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A recent patch changed some irq routines from inlines to functions. These routines are called by the tracer code. Now that they're functions, if they are compiled for function tracing they will call the tracer and crash the system due to infinite recursion. The fix disables tracing in these functions by using "notrace" in the function definition. Signed-off-by: Al Cooper <alcooperx@gmail.com> Reviewed-by: David Daney <david.daney@cavium.com> Pathchwork: https://patchwork.linux-mips.org/patch/4564/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | MIPS: Merge overlapping bootmem rangesRalf Baechle2012-11-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this, we may end up with something like this in /proc/iomem: 01100000-014fffff : System RAM 01100000-013bf48f : Kernel code 013bf490-0149e01f : Kernel data 01500000-0c0fffff : System RAM but the two System RAM ranges should be one single range. This particular case will result in kexec failure on Octeon systems if the kernel being loaded by kexec is bigger than the already running kernel. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | | Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2012-11-24
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 arch fixes from Peter Anvin: "Here is a collection of fixes for 3.7-rc7. This is a superset of tglx' earlier pull request." * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86-64: Fix ordering of CFI directives and recent ASM_CLAC additions x86, microcode, AMD: Add support for family 16h processors x86-32: Export kernel_stack_pointer() for modules x86-32: Fix invalid stack address while in softirq x86, efi: Fix processor-specific memcpy() build error x86: remove dummy long from EFI stub x86, mm: Correct vmflag test for checking VM_HUGETLB x86, amd: Disable way access filter on Piledriver CPUs x86/mce: Do not change worker's running cpu in cmci_rediscover(). x86/ce4100: Fix PCI configuration register access for devices without interrupts x86/ce4100: Fix reboot by forcing the reboot method to be KBD x86/ce4100: Fix pm_poweroff MAINTAINERS: Update email address for Robert Richter x86, microcode_amd: Change email addresses, MAINTAINERS entry MAINTAINERS: Change Boris' email address EDAC: Change Boris' email address x86, AMD: Change Boris' email address
| * | | x86-64: Fix ordering of CFI directives and recent ASM_CLAC additionsJan Beulich2012-11-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While these got added in the right place everywhere else, entry_64.S is the odd one where they ended up before the initial CFI directive(s). In order to cover the full code ranges, the CFI directive must be first, though. Signed-off-by: Jan Beulich <jbeulich@suse.com> Link: http://lkml.kernel.org/r/5093BA1F02000078000A600E@nat28.tlf.novell.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | x86, microcode, AMD: Add support for family 16h processorsBoris Ostrovsky2012-11-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add valid patch size for family 16h processors. [ hpa: promoting to urgent/stable since it is hw enabling and trivial ] Signed-off-by: Boris Ostrovsky <boris.ostrovsky@amd.com> Acked-by: Andreas Herrmann <herrmann.der.user@googlemail.com> Link: http://lkml.kernel.org/r/1353004910-2204-1-git-send-email-boris.ostrovsky@amd.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: <stable@vger.kernel.org>
| * | | x86-32: Export kernel_stack_pointer() for modulesH. Peter Anvin2012-11-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modules, in particular oprofile (and possibly other similar tools) need kernel_stack_pointer(), so export it using EXPORT_SYMBOL_GPL(). Cc: Yang Wei <wei.yang@windriver.com> Cc: Robert Richter <robert.richter@amd.com> Cc: Jun Zhang <jun.zhang@intel.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20120912135059.GZ8285@erda.amd.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | x86-32: Fix invalid stack address while in softirqRobert Richter2012-11-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In 32 bit the stack address provided by kernel_stack_pointer() may point to an invalid range causing NULL pointer access or page faults while in NMI (see trace below). This happens if called in softirq context and if the stack is empty. The address at &regs->sp is then out of range. Fixing this by checking if regs and &regs->sp are in the same stack context. Otherwise return the previous stack pointer stored in struct thread_info. If that address is invalid too, return address of regs. BUG: unable to handle kernel NULL pointer dereference at 0000000a IP: [<c1004237>] print_context_stack+0x6e/0x8d *pde = 00000000 Oops: 0000 [#1] SMP Modules linked in: Pid: 4434, comm: perl Not tainted 3.6.0-rc3-oprofile-i386-standard-g4411a05 #4 Hewlett-Packard HP xw9400 Workstation/0A1Ch EIP: 0060:[<c1004237>] EFLAGS: 00010093 CPU: 0 EIP is at print_context_stack+0x6e/0x8d EAX: ffffe000 EBX: 0000000a ECX: f4435f94 EDX: 0000000a ESI: f4435f94 EDI: f4435f94 EBP: f5409ec0 ESP: f5409ea0 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 CR0: 8005003b CR2: 0000000a CR3: 34ac9000 CR4: 000007d0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 Process perl (pid: 4434, ti=f5408000 task=f5637850 task.ti=f4434000) Stack: 000003e8 ffffe000 00001ffc f4e39b00 00000000 0000000a f4435f94 c155198c f5409ef0 c1003723 c155198c f5409f04 00000000 f5409edc 00000000 00000000 f5409ee8 f4435f94 f5409fc4 00000001 f5409f1c c12dce1c 00000000 c155198c Call Trace: [<c1003723>] dump_trace+0x7b/0xa1 [<c12dce1c>] x86_backtrace+0x40/0x88 [<c12db712>] ? oprofile_add_sample+0x56/0x84 [<c12db731>] oprofile_add_sample+0x75/0x84 [<c12ddb5b>] op_amd_check_ctrs+0x46/0x260 [<c12dd40d>] profile_exceptions_notify+0x23/0x4c [<c1395034>] nmi_handle+0x31/0x4a [<c1029dc5>] ? ftrace_define_fields_irq_handler_entry+0x45/0x45 [<c13950ed>] do_nmi+0xa0/0x2ff [<c1029dc5>] ? ftrace_define_fields_irq_handler_entry+0x45/0x45 [<c13949e5>] nmi_stack_correct+0x28/0x2d [<c1029dc5>] ? ftrace_define_fields_irq_handler_entry+0x45/0x45 [<c1003603>] ? do_softirq+0x4b/0x7f <IRQ> [<c102a06f>] irq_exit+0x35/0x5b [<c1018f56>] smp_apic_timer_interrupt+0x6c/0x7a [<c1394746>] apic_timer_interrupt+0x2a/0x30 Code: 89 fe eb 08 31 c9 8b 45 0c ff 55 ec 83 c3 04 83 7d 10 00 74 0c 3b 5d 10 73 26 3b 5d e4 73 0c eb 1f 3b 5d f0 76 1a 3b 5d e8 73 15 <8b> 13 89 d0 89 55 e0 e8 ad 42 03 00 85 c0 8b 55 e0 75 a6 eb cc EIP: [<c1004237>] print_context_stack+0x6e/0x8d SS:ESP 0068:f5409ea0 CR2: 000000000000000a ---[ end trace 62afee3481b00012 ]--- Kernel panic - not syncing: Fatal exception in interrupt V2: * add comments to kernel_stack_pointer() * always return a valid stack address by falling back to the address of regs Reported-by: Yang Wei <wei.yang@windriver.com> Cc: <stable@vger.kernel.org> Signed-off-by: Robert Richter <robert.richter@amd.com> Link: http://lkml.kernel.org/r/20120912135059.GZ8285@erda.amd.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Jun Zhang <jun.zhang@intel.com>
| * | | Merge commit 'efi-for-3.7-v2' into x86/urgentH. Peter Anvin2012-11-20
| |\ \ \
| | * | | x86, efi: Fix processor-specific memcpy() build errorMatt Fleming2012-11-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Building for Athlon/Duron/K7 results in the following build error, arch/x86/boot/compressed/eboot.o: In function `__constant_memcpy3d': eboot.c:(.text+0x385): undefined reference to `_mmx_memcpy' arch/x86/boot/compressed/eboot.o: In function `efi_main': eboot.c:(.text+0x1a22): undefined reference to `_mmx_memcpy' because the boot stub code doesn't link with the kernel proper, and therefore doesn't have access to the 3DNow version of memcpy. So, follow the example of misc.c and #undef memcpy so that we use the version provided by misc.c. See https://bugzilla.kernel.org/show_bug.cgi?id=50391 Reported-by: Al Viro <viro@zeniv.linux.org.uk> Reported-by: Ryan Underwood <nemesis@icequake.net> Cc: H. Peter Anvin <hpa@zytor.com> Cc: stable@vger.kernel.org Signed-off-by: Matt Fleming <matt.fleming@intel.com>
| | * | | x86: remove dummy long from EFI stubCesar Eduardo Barros2012-11-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 2e064b1 (x86, efi: Fix issue of overlapping .reloc section for EFI_STUB) removed a dummy reloc added by commit 291f363 (x86, efi: EFI boot stub support), but forgot to remove the dummy long used by that reloc. Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Tested-by: Lee G Rosenbaum <lee.g.rosenbaum@intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
| * | | | x86, mm: Correct vmflag test for checking VM_HUGETLBJoonsoo Kim2012-11-14
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 611ae8e3f5204f7480b3b405993b3352cfa16662('enable tlb flush range support for x86') change flush_tlb_mm_range() considerably. After this, we test whether vmflag equal to VM_HUGETLB and it may be always failed, because vmflag usually has other flags simultaneously. Our intention is to check whether this vma is for hughtlb, so correct it according to this purpose. Signed-off-by: Joonsoo Kim <js1304@gmail.com> Acked-by: Alex Shi <alex.shi@intel.com> Link: http://lkml.kernel.org/r/1352740656-19417-1-git-send-email-js1304@gmail.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | Merge tag 'please-pull-tangchen' of ↵Ingo Molnar2012-11-13
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras into x86/urgent Pull MCE fix from Tony Luck: "Fix problem in CMCI rediscovery code that was illegally migrating worker threads to other cpus." Signed-off-by: Ingo Molnar <mingo@kernel.org>
| | * | | x86/mce: Do not change worker's running cpu in cmci_rediscover().Tang Chen2012-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cmci_rediscover() used set_cpus_allowed_ptr() to change the current process's running cpu, and migrate itself to the dest cpu. But worker processes are not allowed to be migrated. If current is a worker, the worker will be migrated to another cpu, but the corresponding worker_pool is still on the original cpu. In this case, the following BUG_ON in try_to_wake_up_local() will be triggered: BUG_ON(rq != this_rq()); This will cause the kernel panic. The call trace is like the following: [ 6155.451107] ------------[ cut here ]------------ [ 6155.452019] kernel BUG at kernel/sched/core.c:1654! ...... [ 6155.452019] RIP: 0010:[<ffffffff810add15>] [<ffffffff810add15>] try_to_wake_up_local+0x115/0x130 ...... [ 6155.452019] Call Trace: [ 6155.452019] [<ffffffff8166fc14>] __schedule+0x764/0x880 [ 6155.452019] [<ffffffff81670059>] schedule+0x29/0x70 [ 6155.452019] [<ffffffff8166de65>] schedule_timeout+0x235/0x2d0 [ 6155.452019] [<ffffffff810db57d>] ? mark_held_locks+0x8d/0x140 [ 6155.452019] [<ffffffff810dd463>] ? __lock_release+0x133/0x1a0 [ 6155.452019] [<ffffffff81671c50>] ? _raw_spin_unlock_irq+0x30/0x50 [ 6155.452019] [<ffffffff810db8f5>] ? trace_hardirqs_on_caller+0x105/0x190 [ 6155.452019] [<ffffffff8166fefb>] wait_for_common+0x12b/0x180 [ 6155.452019] [<ffffffff810b0b30>] ? try_to_wake_up+0x2f0/0x2f0 [ 6155.452019] [<ffffffff8167002d>] wait_for_completion+0x1d/0x20 [ 6155.452019] [<ffffffff8110008a>] stop_one_cpu+0x8a/0xc0 [ 6155.452019] [<ffffffff810abd40>] ? __migrate_task+0x1a0/0x1a0 [ 6155.452019] [<ffffffff810a6ab8>] ? complete+0x28/0x60 [ 6155.452019] [<ffffffff810b0fd8>] set_cpus_allowed_ptr+0x128/0x130 [ 6155.452019] [<ffffffff81036785>] cmci_rediscover+0xf5/0x140 [ 6155.452019] [<ffffffff816643c0>] mce_cpu_callback+0x18d/0x19d [ 6155.452019] [<ffffffff81676187>] notifier_call_chain+0x67/0x150 [ 6155.452019] [<ffffffff810a03de>] __raw_notifier_call_chain+0xe/0x10 [ 6155.452019] [<ffffffff81070470>] __cpu_notify+0x20/0x40 [ 6155.452019] [<ffffffff810704a5>] cpu_notify_nofail+0x15/0x30 [ 6155.452019] [<ffffffff81655182>] _cpu_down+0x262/0x2e0 [ 6155.452019] [<ffffffff81655236>] cpu_down+0x36/0x50 [ 6155.452019] [<ffffffff813d3eaa>] acpi_processor_remove+0x50/0x11e [ 6155.452019] [<ffffffff813a6978>] acpi_device_remove+0x90/0xb2 [ 6155.452019] [<ffffffff8143cbec>] __device_release_driver+0x7c/0xf0 [ 6155.452019] [<ffffffff8143cd6f>] device_release_driver+0x2f/0x50 [ 6155.452019] [<ffffffff813a7870>] acpi_bus_remove+0x32/0x6d [ 6155.452019] [<ffffffff813a7932>] acpi_bus_trim+0x87/0xee [ 6155.452019] [<ffffffff813a7a21>] acpi_bus_hot_remove_device+0x88/0x16b [ 6155.452019] [<ffffffff813a33ee>] acpi_os_execute_deferred+0x27/0x34 [ 6155.452019] [<ffffffff81090589>] process_one_work+0x219/0x680 [ 6155.452019] [<ffffffff81090528>] ? process_one_work+0x1b8/0x680 [ 6155.452019] [<ffffffff813a33c7>] ? acpi_os_wait_events_complete+0x23/0x23 [ 6155.452019] [<ffffffff810923be>] worker_thread+0x12e/0x320 [ 6155.452019] [<ffffffff81092290>] ? manage_workers+0x110/0x110 [ 6155.452019] [<ffffffff81098396>] kthread+0xc6/0xd0 [ 6155.452019] [<ffffffff8167c4c4>] kernel_thread_helper+0x4/0x10 [ 6155.452019] [<ffffffff81671f30>] ? retint_restore_args+0x13/0x13 [ 6155.452019] [<ffffffff810982d0>] ? __init_kthread_worker+0x70/0x70 [ 6155.452019] [<ffffffff8167c4c0>] ? gs_change+0x13/0x13 This patch removes the set_cpus_allowed_ptr() call, and put the cmci rediscover jobs onto all the other cpus using system_wq. This could bring some delay for the jobs. Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | | | x86, amd: Disable way access filter on Piledriver CPUsAndre Przywara2012-10-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Way Access Filter in recent AMD CPUs may hurt the performance of some workloads, caused by aliasing issues in the L1 cache. This patch disables it on the affected CPUs. The issue is similar to that one of last year: http://lkml.indiana.edu/hypermail/linux/kernel/1107.3/00041.html This new patch does not replace the old one, we just need another quirk for newer CPUs. The performance penalty without the patch depends on the circumstances, but is a bit less than the last year's 3%. The workloads affected would be those that access code from the same physical page under different virtual addresses, so different processes using the same libraries with ASLR or multiple instances of PIE-binaries. The code needs to be accessed simultaneously from both cores of the same compute unit. More details can be found here: http://developer.amd.com/Assets/SharedL1InstructionCacheonAMD15hCPU.pdf CPUs affected are anything with the core known as Piledriver. That includes the new parts of the AMD A-Series (aka Trinity) and the just released new CPUs of the FX-Series (aka Vishera). The model numbering is a bit odd here: FX CPUs have model 2, A-Series has model 10h, with possible extensions to 1Fh. Hence the range of model ids. Signed-off-by: Andre Przywara <osp@andrep.de> Link: http://lkml.kernel.org/r/1351700450-9277-1-git-send-email-osp@andrep.de Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | | x86/ce4100: Fix PCI configuration register access for devices without interruptsMaxime Bizon2012-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some CE4100 devices such as the: - DFX module (01:0b.7) - entertainment encryption device (01:10.0) - multimedia controller (01:12.0) do not have a device interrupt at all. This patch fixes the PCI controller code to declare the missing PCI configuration register space, as well as a fixup method for forcing the interrupt pin to be 0 for these devices. This is required to ensure that pci drivers matching on these devices will be able to honor the various PCI subsystem calls touching the configuration space. Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: rui.zhang@intel.com Cc: alan@linux.intel.com Link: http://lkml.kernel.org/r/1351518020-25556-4-git-send-email-ffainelli@freebox.fr Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | x86/ce4100: Fix reboot by forcing the reboot method to be KBDMaxime Bizon2012-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The default reboot is via ACPI for this platform, and the CEFDK bootloader actually supports this, but will issue a system power off instead of a real reboot. Setting the reboot method to be KBD instead of ACPI ensures proper system reboot. Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Cc: rui.zhang@intel.com Cc: alan@linux.intel.com Link: http://lkml.kernel.org/r/1351518020-25556-3-git-send-email-ffainelli@freebox.fr Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | x86/ce4100: Fix pm_poweroffFlorian Fainelli2012-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The CE4100 platform is currently missing a proper pm_poweroff implementation leading to poweroff making the CPU spin forever and the CE4100 platform does not enter a low-power mode where the external Power Management Unit can properly power off the system. Power off on this platform is implemented pretty much like reboot, by writing to the SoC built-in 8051 microcontroller mapped at I/O port 0xcf9, the value 0x4. Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: rui.zhang@intel.com Cc: alan@linux.intel.com Link: http://lkml.kernel.org/r/1351518020-25556-2-git-send-email-ffainelli@freebox.fr Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | x86, microcode_amd: Change email addresses, MAINTAINERS entryAndreas Herrmann2012-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: lm-sensors@lm-sensors.org Cc: oprofile-list@lists.sf.net Cc: Stephane Eranian <eranian@google.com> Cc: Robert Richter <rric@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Jorg Roedel <joro@8bytes.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Jean Delvare <khali@linux-fr.org> Cc: Guenter Roeck <linux@roeck-us.net> Link: http://lkml.kernel.org/r/20121029175138.GC5024@tweety Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * | | | x86, AMD: Change Boris' email addressBorislav Petkov2012-10-30
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move to private email and put in maintained status. Signed-off-by: Borislav Petkov <bp@alien8.de> Link: http://lkml.kernel.org/r/1351532410-4887-1-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | | Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds2012-11-23
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull device tree regression fix from Grant Likely: "Simple build regression fix for DT device drivers on Sparc. An earlier change had masked out the of_iomap() helper on SPARC." * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6: of/address: sparc: Declare of_iomap as an extern function for sparc again
| * | | | of/address: sparc: Declare of_iomap as an extern function for sparc againAndreas Larsson2012-11-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This bug-fix makes sure that of_iomap is defined extern for sparc so that the sparc-specific implementation of_iomap is once again used when including include/linux/of_address.h in a sparc context. OF_GPIO that is now available for sparc relies on this. The bug was inadvertently introduced in a850a75, "of/address: add empty static inlines for !CONFIG_OF", that added a static dummy inline for of_iomap when !CONFIG_OF_ADDRESS. However, CONFIG_OF_ADDRESS is never defined for sparc, but there is a sparc-specific implementation /arch/sparc/kernel/of_device_common.c. This fix takes the same approach as 0bce04b that solved the equivalent problem for of_address_to_resource. Signed-off-by: Andreas Larsson <andreas@gaisler.com> Acked-by: David Miller <davem@davemloft.net> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | | Merge branch 'i2c-embedded/for-current' of ↵Linus Torvalds2012-11-23
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.pengutronix.de/git/wsa/linux Pull i2c fixes from Wolfram Sang: "Bugfixes for the i2c subsystem. Except for a few one-liners, there is mainly one revert because of an overlooked dependency. Since there is no linux-next at the moment, I did some extra testing, and all was fine for me." * 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux: i2c: mxs: Handle i2c DMA failure properly i2c: s3c2410: Fix code to free gpios i2c: omap: ensure writes to dev->buf_len are ordered Revert "ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints" i2c: at91: fix SMBus quick command
| * | | | | Revert "ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints"Paul Walmsley2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 3db11feffc1ad2ab9dea27789e6b5b3032827adc (ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints). This commit causes I2C timeouts to appear on several OMAP3430/3530-based boards: http://marc.info/?l=linux-arm-kernel&m=135071372426971&w=2 http://marc.info/?l=linux-arm-kernel&m=135067558415214&w=2 http://marc.info/?l=linux-arm-kernel&m=135216013608196&w=2 and appears to have been sent for merging before one of its prerequisites was merged: http://marc.info/?l=linux-arm-kernel&m=135219411617621&w=2 Signed-off-by: Paul Walmsley <paul@pwsan.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
* | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds2012-11-23
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull sparc fix from David Miller: "Bug fix from Al Viro" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: not any error from do_sigaltstack() should fail rt_sigreturn()
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