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2008-12-31Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (34 commits) nfsd race fixes: jfs nfsd race fixes: reiserfs nfsd race fixes: ext4 nfsd race fixes: ext3 nfsd race fixes: ext2 nfsd/create race fixes, infrastructure filesystem notification: create fs/notify to contain all fs notification fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization kill ->dir_notify() filp_cachep can be static in fs/file_table.c fix f_count description in Documentation/filesystems/files.txt make INIT_FS use the __RW_LOCK_UNLOCKED initialization take init_fs to saner place kill vfs_permission pass a struct path * to may_open kill walk_init_root remove incorrect comment in inode_permission expand some comments (d_path / seq_path) correct wrong function name of d_put in kernel document and source comment fix switch_names() breakage in short-to-short case ...
2008-12-31take init_fs to saner placeAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-31Merge branch 'irq-fixes-for-linus-4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sparseirq: move __weak symbols into separate compilation unit sparseirq: work around __weak alias bug sparseirq: fix hang with !SPARSE_IRQ sparseirq: set lock_class for legacy irq when sparse_irq is selected sparseirq: work around compiler optimizing away __weak functions sparseirq: fix desc->lock init sparseirq: do not printk when migrating IRQ descriptors sparseirq: remove duplicated arch_early_irq_init() irq: simplify for_each_irq_desc() usage proc: remove ifdef CONFIG_SPARSE_IRQ from stat.c irq: for_each_irq_desc() move to irqnr.h hrtimer: remove #include <linux/irq.h>
2008-12-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: struct device - replace bus_id with dev_name() lguest: move the initial guest page table creation code to the host kvm-s390: implement config_changed for virtio on s390 virtio_console: support console resizing virtio: add PCI device release() function virtio_blk: fix type warning virtio: block: dynamic maximum segments virtio: set max_segment_size and max_sectors to infinite. virtio: avoid implicit use of Linux page size in balloon interface virtio: hand virtio ring alignment as argument to vring_new_virtqueue virtio: use KVM_S390_VIRTIO_RING_ALIGN instead of relying on pagesize virtio: use LGUEST_VRING_ALIGN instead of relying on pagesize virtio: Don't use PAGE_SIZE for vring alignment in virtio_pci. virtio: rename 'pagesize' arg to vring_init/vring_size virtio: Don't use PAGE_SIZE in virtio_pci.c virtio: struct device - replace bus_id with dev_name(), dev_set_name() virtio-pci queue allocation not page-aligned
2008-12-30Merge branch 'oprofile-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: oprofile: select RING_BUFFER ring_buffer: adding EXPORT_SYMBOLs oprofile: fix lost sample counter oprofile: remove nr_available_slots() oprofile: port to the new ring_buffer ring_buffer: add remaining cpu functions to ring_buffer.h oprofile: moving cpu_buffer_reset() to cpu_buffer.h oprofile: adding cpu_buffer_entries() oprofile: adding cpu_buffer_write_commit() oprofile: adding cpu buffer r/w access functions ftrace: remove unused function arg in trace_iterator_increment() ring_buffer: update description for ring_buffer_alloc() oprofile: set values to default when creating oprofilefs oprofile: implement switch/case in buffer_sync.c x86/oprofile: cleanup IBS init/exit functions in op_model_amd.c x86/oprofile: reordering IBS code in op_model_amd.c oprofile: fix typo oprofile: whitspace changes only oprofile: update comment for oprofile_add_sample() oprofile: comment cleanup
2008-12-30Merge branch 'irq-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, sparseirq: clean up Kconfig entry x86: turn CONFIG_SPARSE_IRQ off by default sparseirq: fix numa_migrate_irq_desc dependency and comments sparseirq: add kernel-doc notation for new member in irq_desc, -v2 locking, irq: enclose irq_desc_lock_class in CONFIG_LOCKDEP sparseirq, xen: make sure irq_desc is allocated for interrupts sparseirq: fix !SMP building, #2 x86, sparseirq: move irq_desc according to smp_affinity, v7 proc: enclose desc variable of show_stat() in CONFIG_SPARSE_IRQ sparse irqs: add irqnr.h to the user headers list sparse irqs: handle !GENIRQ platforms sparseirq: fix !SMP && !PCI_MSI && !HT_IRQ build sparseirq: fix Alpha build failure sparseirq: fix typo in !CONFIG_IO_APIC case x86, MSI: pass irq_cfg and irq_desc x86: MSI start irq numbering from nr_irqs_gsi x86: use NR_IRQS_LEGACY sparse irq_desc[] array: core kernel and x86 changes genirq: record IRQ_LEVEL in irq_desc[] irq.h: remove padding from irq_desc on 64bits
2008-12-30Merge branch 'timers-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: hrtimers: fix warning in kernel/hrtimer.c x86: make sure we really have an hpet mapping before using it x86: enable HPET on Fujitsu u9200 linux/timex.h: cleanup for userspace posix-timers: simplify de_thread()->exit_itimers() path posix-timers: check ->it_signal instead of ->it_pid to validate the timer posix-timers: use "struct pid*" instead of "struct task_struct*" nohz: suppress needless timer reprogramming clocksource, acpi_pm.c: put acpi_pm_read_slow() under CONFIG_PCI nohz: no softirq pending warnings for offline cpus hrtimer: removing all ur callback modes, fix hrtimer: removing all ur callback modes, fix hotplug hrtimer: removing all ur callback modes x86: correct link to HPET timer specification rtc-cmos: export second NVRAM bank Fixed up conflicts in sound/drivers/pcsp/pcsp.c and sound/core/hrtimer.c manually.
2008-12-30Merge branch 'core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (63 commits) stacktrace: provide save_stack_trace_tsk() weak alias rcu: provide RCU options on non-preempt architectures too printk: fix discarding message when recursion_bug futex: clean up futex_(un)lock_pi fault handling "Tree RCU": scalable classic RCU implementation futex: rename field in futex_q to clarify single waiter semantics x86/swiotlb: add default swiotlb_arch_range_needs_mapping x86/swiotlb: add default phys<->bus conversion x86: unify pci iommu setup and allow swiotlb to compile for 32 bit x86: add swiotlb allocation functions swiotlb: consolidate swiotlb info message printing swiotlb: support bouncing of HighMem pages swiotlb: factor out copy to/from device swiotlb: add arch hook to force mapping swiotlb: allow architectures to override phys<->bus<->phys conversions swiotlb: add comment where we handle the overflow of a dma mask on 32 bit rcu: fix rcutorture behavior during reboot resources: skip sanity check of busy resources swiotlb: move some definitions to header swiotlb: allow architectures to override swiotlb pool allocation ... Fix up trivial conflicts in arch/x86/kernel/Makefile arch/x86/mm/init_32.c include/linux/hardirq.h as per Ingo's suggestions.
2008-12-30lguest: move the initial guest page table creation code to the hostMatias Zabaljauregui
This patch moves the initial guest page table creation code to the host, so the launcher keeps working with PAE enabled configs. Signed-off-by: Matias Zabaljauregui <zabaljauregui@gmail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-12-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-nextLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (25 commits) allow stripping of generated symbols under CONFIG_KALLSYMS_ALL kbuild: strip generated symbols from *.ko kbuild: simplify use of genksyms kernel-doc: check for extra kernel-doc notations kbuild: add headerdep used to detect inclusion cycles in header files kbuild: fix string equality testing in tags.sh kbuild: fix make tags/cscope kbuild: fix make incompatibility kbuild: remove TAR_IGNORE setlocalversion: add git-svn support setlocalversion: print correct subversion revision scripts: improve the decodecode script scripts/package: allow custom options to rpm genksyms: allow to ignore symbol checksum changes genksyms: track symbol checksum changes tags and cscope support really belongs in a shell script kconfig: fix options to check-lxdialog.sh kbuild: gen_init_cpio expands shell variables in file names remove bashisms from scripts/extract-ikconfig kbuild: teach mkmakfile to be silent ...
2008-12-28Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (85 commits) [S390] provide documentation for hvc_iucv kernel parameter. [S390] convert ctcm printks to dev_xxx and pr_xxx macros. [S390] convert zfcp printks to pr_xxx macros. [S390] convert vmlogrdr printks to pr_xxx macros. [S390] convert zfcp dumper printks to pr_xxx macros. [S390] convert cpu related printks to pr_xxx macros. [S390] convert qeth printks to dev_xxx and pr_xxx macros. [S390] convert sclp printks to pr_xxx macros. [S390] convert iucv printks to dev_xxx and pr_xxx macros. [S390] convert ap_bus printks to pr_xxx macros. [S390] convert dcssblk and extmem printks messages to pr_xxx macros. [S390] convert monwriter printks to pr_xxx macros. [S390] convert s390 debug feature printks to pr_xxx macros. [S390] convert monreader printks to pr_xxx macros. [S390] convert appldata printks to pr_xxx macros. [S390] convert setup printks to pr_xxx macros. [S390] convert hypfs printks to pr_xxx macros. [S390] convert time printks to pr_xxx macros. [S390] convert cpacf printks to pr_xxx macros. [S390] convert cio printks to pr_xxx macros. ...
2008-12-28Merge branch 'sched-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits) sched: fix warning in fs/proc/base.c schedstat: consolidate per-task cpu runtime stats sched: use RCU variant of list traversal in for_each_leaf_rt_rq() sched, cpuacct: export percpu cpuacct cgroup stats sched, cpuacct: refactoring cpuusage_read / cpuusage_write sched: optimize update_curr() sched: fix wakeup preemption clock sched: add missing arch_update_cpu_topology() call sched: let arch_update_cpu_topology indicate if topology changed sched: idle_balance() does not call load_balance_newidle() sched: fix sd_parent_degenerate on non-numa smp machine sched: add uid information to sched_debug for CONFIG_USER_SCHED sched: move double_unlock_balance() higher sched: update comment for move_task_off_dead_cpu sched: fix inconsistency when redistribute per-cpu tg->cfs_rq shares sched/rt: removed unneeded defintion sched: add hierarchical accounting to cpu accounting controller sched: include group statistics in /proc/sched_debug sched: rename SCHED_NO_NO_OMIT_FRAME_POINTER => SCHED_OMIT_FRAME_POINTER sched: clean up SCHED_CPUMASK_ALLOC ...
2008-12-28Merge branch 'tracing-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (241 commits) sched, trace: update trace_sched_wakeup() tracing/ftrace: don't trace on early stage of a secondary cpu boot, v3 Revert "x86: disable X86_PTRACE_BTS" ring-buffer: prevent false positive warning ring-buffer: fix dangling commit race ftrace: enable format arguments checking x86, bts: memory accounting x86, bts: add fork and exit handling ftrace: introduce tracing_reset_online_cpus() helper tracing: fix warnings in kernel/trace/trace_sched_switch.c tracing: fix warning in kernel/trace/trace.c tracing/ring-buffer: remove unused ring_buffer size trace: fix task state printout ftrace: add not to regex on filtering functions trace: better use of stack_trace_enabled for boot up code trace: add a way to enable or disable the stack tracer x86: entry_64 - introduce FTRACE_ frame macro v2 tracing/ftrace: add the printk-msg-only option tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp() x86, bts: correctly report invalid bts records ... Fixed up trivial conflict in scripts/recordmcount.pl due to SH bits being already partly merged by the SH merge.
2008-12-28Merge branch 'x86-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (246 commits) x86: traps.c replace #if CONFIG_X86_32 with #ifdef CONFIG_X86_32 x86: PAT: fix address types in track_pfn_vma_new() x86: prioritize the FPU traps for the error code x86: PAT: pfnmap documentation update changes x86: PAT: move track untrack pfnmap stubs to asm-generic x86: PAT: remove follow_pfnmap_pte in favor of follow_phys x86: PAT: modify follow_phys to return phys_addr prot and return value x86: PAT: clarify is_linear_pfn_mapping() interface x86: ia32_signal: remove unnecessary declaration x86: common.c boot_cpu_stack and boot_exception_stacks should be static x86: fix intel x86_64 llc_shared_map/cpu_llc_id anomolies x86: fix warning in arch/x86/kernel/microcode_amd.c x86: ia32.h: remove unused struct sigfram32 and rt_sigframe32 x86: asm-offset_64: use rt_sigframe_ia32 x86: sigframe.h: include headers for dependency x86: traps.c declare functions before they get used x86: PAT: update documentation to cover pgprot and remap_pfn related changes - v3 x86: PAT: add pgprot_writecombine() interface for drivers - v3 x86: PAT: change pgprot_noncached to uc_minus instead of strong uc - v3 x86: PAT: implement track/untrack of pfnmap regions for x86 - v3 ...
2008-12-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (105 commits) SELinux: don't check permissions for kernel mounts security: pass mount flags to security_sb_kern_mount() SELinux: correctly detect proc filesystems of the form "proc/foo" Audit: Log TIOCSTI user namespaces: document CFS behavior user namespaces: require cap_set{ug}id for CLONE_NEWUSER user namespaces: let user_ns be cloned with fairsched CRED: fix sparse warnings User namespaces: use the current_user_ns() macro User namespaces: set of cleanups (v2) nfsctl: add headers for credentials coda: fix creds reference capabilities: define get_vfs_caps_from_disk when file caps are not enabled CRED: Allow kernel services to override LSM settings for task actions CRED: Add a kernel_service object class to SELinux CRED: Differentiate objective and effective subjective credentials on a task CRED: Documentation CRED: Use creds in file structs CRED: Prettify commoncap.c CRED: Make execve() take advantage of copy-on-write credentials ...
2008-12-27sparseirq: work around compiler optimizing away __weak functionsYinghai Lu
Impact: fix panic on null pointer with sparseirq Some GCC versions seem to inline the weak global function, when that function is empty. Work it around, by making the functions return a (dummy) integer. Signed-off-by: Yinghai <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-26irq: simplify for_each_irq_desc() usageKOSAKI Motohiro
Impact: cleanup all for_each_irq_desc() usage point have !desc check. then its check can move into for_each_irq_desc() macro. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25Merge branches 'timers/clocksource', 'timers/hpet', 'timers/hrtimers', ↵Ingo Molnar
'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/rtc' into timers/core
2008-12-25Merge branches 'irq/sparseirq', 'irq/genirq' and 'irq/urgent'; commit ↵Ingo Molnar
'v2.6.28' into irq/core
2008-12-25x86, sparseirq: clean up Kconfig entryIngo Molnar
Impact: improve help text Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25Merge branches 'core/debugobjects', 'core/iommu', 'core/locking', ↵Ingo Molnar
'core/printk', 'core/rcu', 'core/resources', 'core/softirq' and 'core/stacktrace' into core/core
2008-12-25Merge commit 'v2.6.28' into core/coreIngo Molnar
2008-12-25Merge branch 'sched/urgent'; commit 'v2.6.28' into sched/coreIngo Molnar
2008-12-25[S390] arch_setup_additional_pages argumentsMartin Schwidefsky
arch_setup_additional_pages currently gets two arguments, the binary format descripton and an indication if the process uses an executable stack or not. The second argument is not used by anybody, it could be removed without replacement. What actually does make sense is to pass an indication if the process uses the elf interpreter or not. The glibc code will not use anything from the vdso if the process does not use the dynamic linker, so for statically linked binaries the architecture backend can choose not to map the vdso. Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25Merge branches 'tracing/ftrace', 'tracing/hw-branch-tracing' and ↵Ingo Molnar
'tracing/ring-buffer'; commit 'v2.6.28' into tracing/core
2008-12-25Merge branch 'x86/tsc' into tracing/coreIngo Molnar
Merge it to resolve this incidental conflict between the BTS fixes/cleanups and changes in x86/tsc: Conflicts: arch/x86/kernel/cpu/intel.c
2008-12-25x86: turn CONFIG_SPARSE_IRQ off by defaultIngo Molnar
New feature - lets disable it by default first - can flip it around later. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25Merge branches 'x86/pat2' and 'x86/fpu'; commit 'v2.6.28' into x86/coreIngo Molnar
2008-12-25x86: traps.c replace #if CONFIG_X86_32 with #ifdef CONFIG_X86_32Jaswinder Singh
Impact: cleanup, avoid warning on X86_64 Fixes this warning on X86_64: CC arch/x86/kernel/traps.o arch/x86/kernel/traps.c:695:5: warning: "CONFIG_X86_32" is not defined Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25tracing/ftrace: don't trace on early stage of a secondary cpu boot, v3Frederic Weisbecker
Impact: fix a crash/hard-reboot on certain configs while enabling cpu runtime On some archs, the boot of a secondary cpu can have an early fragile state. On x86-64, the pda is not initialized on the first stage of a cpu boot but it is needed to get the cpu number and the current task pointer. This data is needed during tracing. As they were dereferenced at this stage, we got a crash while tracing a cpu being enabled at runtime. Some other archs like ia64 can have such kind of issue too. Changes on v2: We dropped the previous solution of a per-arch called function to guess the current state of a cpu. That could slow down the tracing. This patch removes the -pg flag on arch/x86/kernel/cpu/common.c where the low level cpu boot functions exist, on start_secondary() and a helper function used at this stage. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25Merge branch 'next' into for-linusJames Morris
2008-12-25crypto: crc32c-intel - Switch to shashHerbert Xu
This patch changes crc32c-intel to the new shash interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-12-25crypto: crc32c-intel - Update copyright headKent Liu
The original copyright head for crc32c-intel.c is incorrect. Please merge the patch to update it. Signed-Off-By: Kent Liu <kent.liu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-12-24Revert "x86: disable X86_PTRACE_BTS"Ingo Molnar
This reverts commit 40f15ad8aadff5ebb621b17a6f303ad2cd3f847d. The CONFIG_X86_PTRACE_BTS bugs have been fixed via: c5dee61: x86, bts: memory accounting bf53de9: x86, bts: add fork and exit handling Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-24Merge branch 'linus' into tracing/hw-branch-tracingIngo Molnar
2008-12-24x86: disable X86_PTRACE_BTSIngo Molnar
there's a new ptrace arch level feature in .28: config X86_PTRACE_BTS bool "Branch Trace Store" it has broken fork() handling: the old DS area gets copied over into a new task without clearing it. Fixes exist but they came too late: c5dee61: x86, bts: memory accounting bf53de9: x86, bts: add fork and exit handling and are queued up for v2.6.29. This shows that the facility is still not tested well enough to release into a stable kernel - disable it for now and reactivate in .29. In .29 the hardware-branch-tracer will use the DS/BTS facilities too - hopefully resulting in better code. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-24x86: PAT: fix address types in track_pfn_vma_new()H. Peter Anvin
Impact: cleanup, fix warning This warning: arch/x86/mm/pat.c: In function track_pfn_vma_copy: arch/x86/mm/pat.c:701: warning: passing argument 5 of follow_phys from incompatible pointer type Triggers because physical addresses are resource_size_t, not u64. This really matters when calling an interface like follow_phys() which takes a pointer to a physical address -- although on x86, being littleendian, it would generally work anyway as long as the memory region wasn't completely uninitialized. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-23Merge branch 'x86/irq' into x86/coreIngo Molnar
2008-12-23Merge branch 'x86/iommu' into x86/coreIngo Molnar
2008-12-23Merge branch 'x86/tsc' into x86/coreIngo Molnar
2008-12-23Merge branch 'x86/ptrace' into x86/tscIngo Molnar
Conflicts: arch/x86/kernel/cpu/intel.c
2008-12-23Merge branches 'x86/apic', 'x86/cleanups', 'x86/cpufeature', ↵Ingo Molnar
'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/detect-hyper', 'x86/doc', 'x86/dumpstack', 'x86/early-printk', 'x86/fpu', 'x86/idle', 'x86/io', 'x86/memory-corruption-check', 'x86/microcode', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/pat2', 'x86/pci-ioapic-boot-irq-quirks', 'x86/ptrace', 'x86/quirks', 'x86/reboot', 'x86/setup-memory', 'x86/signal', 'x86/sparse-fixes', 'x86/time', 'x86/uv' and 'x86/xen' into x86/core
2008-12-23Merge branch 'x86/apic' into x86/irqIngo Molnar
Conflicts: arch/x86/kernel/apic.c
2008-12-23Merge commit 'v2.6.28-rc9' into x86/apicIngo Molnar
2008-12-22x86: prioritize the FPU traps for the error codeH. Peter Anvin
In the case of multiple FPU errors, prioritize the error codes, instead of returning __SI_FAULT, which ends up pushing a 0 as the error code to userspace, a POSIX violation. For i386, we will simply return if there are no errors at all; for x86-64 this is probably a "can't happen" (and the code should be unified), but for this patch, return __SI_FAULT|SI_KERNEL if this ever happens. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-20x86: fix resume (S2R) broken by Intel microcode module, on A110LDmitry Adamushko
Impact: fix deadlock This is in response to the following bug report: Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12100 Subject : resume (S2R) broken by Intel microcode module, on A110L Submitter : Andreas Mohr <andi@lisas.de> Date : 2008-11-25 08:48 (19 days old) Handled-By : Dmitry Adamushko <dmitry.adamushko@gmail.com> [ The deadlock scenario has been discovered by Andreas Mohr ] I think I might have a logical explanation why the system: (http://bugzilla.kernel.org/show_bug.cgi?id=12100) might hang upon resuming, OTOH it should have likely hanged each and every time. (1) possible deadlock in microcode_resume_cpu() if either 'if' section is taken; (2) now, I don't see it in spec. and can't experimentally verify it (newer ucodes don't seem to be available for my Core2duo)... but logically-wise, I'd think that when read upon resuming, the 'microcode revision' (MSR 0x8B) should be back to its original one (we need to reload ucode anyway so it doesn't seem logical if a cpu doesn't drop the version)... if so, the comparison with memcmp() for the full 'struct cpu_signature' is wrong... and that's how one of the aforementioned 'if' sections might have been triggered - leading to a deadlock. Obviously, in my tests I simulated loading/resuming with the ucode of the same version (just to see that the file is loaded/re-loaded upon resuming) so this issue has never popped up. I'd appreciate if someone with an appropriate system might give a try to the 2nd patch (titled "fix a comparison && deadlock..."). In any case, the deadlock situation is a must-have fix. Reported-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com> Tested-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-20x86, bts: memory accountingMarkus Metzger
Impact: move the BTS buffer accounting to the mlock bucket Add alloc_locked_buffer() and free_locked_buffer() functions to mm/mlock.c to kalloc a buffer and account the locked memory to current. Account the memory for the BTS buffer to the tracer. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-20x86, bts: add fork and exit handlingMarkus Metzger
Impact: introduce new ptrace facility Add arch_ptrace_untrace() function that is called when the tracer detaches (either voluntarily or when the tracing task dies); ptrace_disable() is only called on a voluntary detach. Add ptrace_fork() and arch_ptrace_fork(). They are called when a traced task is forked. Clear DS and BTS related fields on fork. Release DS resources and reclaim memory in ptrace_untrace(). This releases resources already when the tracing task dies. We used to do that when the traced task dies. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-19x86: PAT: move track untrack pfnmap stubs to asm-genericvenkatesh.pallipadi@intel.com
Impact: Cleanup and branch hints only. Move the track and untrack pfn stub routines from memory.c to asm-generic. Also add unlikely to pfnmap related calls in fork and exit path. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-19x86: PAT: remove follow_pfnmap_pte in favor of follow_physvenkatesh.pallipadi@intel.com
Impact: Cleanup - removes a new function in favor of a recently modified older one. Replace follow_pfnmap_pte in pat code with follow_phys. follow_phys lso returns protection eliminating the need of pte_pgprot call. Using follow_phys also eliminates the need for pte_pa. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>