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* xen: fix hang on suspend.Ian Campbell2010-01-131-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In 65f63384 "xen: improve error handling in do_suspend" I said: - xs_suspend()/xs_resume() and dpm_suspend_noirq()/dpm_resume_noirq() were not nested in the obvious way. and changed the ordering of the calls as so: BEFORE AFTER xs_suspend dpm_suspend_noirq dpm_suspend_noirq xs_suspend *SUSPEND* *SUSPEND* dpm_resume_noirq dpm_resume_noirq xs_resume xs_resume Clearly this is not an improvement and I was talking rubbish. In particular the new ordering is susceptible to a hang if a xenstore write is in progress at the point at which the suspend kicks in. When the suspend process calls xs_suspend it tries to take the request_mutex but if a write is in progress it could be looping in xenbus_xs.c:read_reply() waiting for something to arrive on &xs_state.reply_list while holding the request_mutex (taken in the caller of read_reply). However if we have done dpm_suspend_noirq before xs_suspend then we won't get any more xenstore interrupts and process_msg() will never be woken up to add anything to the reply_list. Fix this by calling xs_suspend before dpm_suspend_noirq. If dpm_suspend_noirq fails then make sure we go through the xs_suspend_cancel() code path. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
* Merge branch 'linux-next' of ↵Linus Torvalds2009-12-117-0/+11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (109 commits) PCI: fix coding style issue in pci_save_state() PCI: add pci_request_acs PCI: fix BUG_ON triggered by logical PCIe root port removal PCI: remove ifdefed pci_cleanup_aer_correct_error_status PCI: unconditionally clear AER uncorr status register during cleanup x86/PCI: claim SR-IOV BARs in pcibios_allocate_resource PCI: portdrv: remove redundant definitions PCI: portdrv: remove unnecessary struct pcie_port_data PCI: portdrv: minor cleanup for pcie_port_device_register PCI: portdrv: add missing irq cleanup PCI: portdrv: enable device before irq initialization PCI: portdrv: cleanup service irqs initialization PCI: portdrv: check capabilities first PCI: portdrv: move PME capability check PCI: portdrv: remove redundant pcie type calculation PCI: portdrv: cleanup pcie_device registration PCI: portdrv: remove redundant pcie_port_device_probe PCI: Always set prefetchable base/limit upper32 registers PCI: read-modify-write the pcie device control register when initiating pcie flr PCI: show dma_mask bits in /sys ... Fixed up conflicts in: arch/x86/kernel/amd_iommu_init.c drivers/pci/dmar.c drivers/pci/hotplug/acpiphp_glue.c
| * xen: move Xen-testing predicates to common headerJeremy Fitzhardinge2009-11-047-0/+11
| | | | | | | | | | | | | | | | Move xen_domain and related tests out of asm-x86 to xen/xen.h so they can be included whenever they are necessary. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | Merge branch 'bugfix' of ↵Linus Torvalds2009-12-104-58/+68
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen * 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen: try harder to balloon up under memory pressure. Xen balloon: fix totalram_pages counting. xen: explicitly create/destroy stop_machine workqueues outside suspend/resume region. xen: improve error handling in do_suspend. xen: don't leak IRQs over suspend/resume. xen: call clock resume notifier on all CPUs xen: use iret for return from 64b kernel to 32b usermode xen: don't call dpm_resume_noirq() with interrupts disabled. xen: register runstate info for boot CPU early xen: register runstate on secondary CPUs xen: register timer interrupt with IRQF_TIMER xen: correctly restore pfn_to_mfn_list_list after resume xen: restore runstate_info even if !have_vcpu_info_placement xen: re-register runstate area earlier on resume. xen: wait up to 5 minutes for device connetion xen: improvement to wait_for_devices() xen: fix is_disconnected_device/exists_disconnected_device xen/xenbus: make DEVICE_ATTR()s static
| * | xen: try harder to balloon up under memory pressure.Ian Campbell2009-12-041-26/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently if the balloon driver is unable to increase the guest's reservation it assumes the failure was due to reaching its full allocation, gives up on the ballooning operation and records the limit it reached as the "hard limit". The driver will not try again until the target is set again (even to the same value). However it is possible that ballooning has in fact failed due to memory pressure in the host and therefore it is desirable to keep attempting to reach the target in case memory becomes available. The most likely scenario is that some guests are ballooning down while others are ballooning up and therefore there is temporary memory pressure while things stabilise. You would not expect a well behaved toolstack to ask a domain to balloon to more than its allocation nor would you expect it to deliberately over-commit memory by setting balloon targets which exceed the total host memory. This patch drops the concept of a hard limit and causes the balloon driver to retry increasing the reservation on a timer in the same manner as when decreasing the reservation. Also if we partially succeed in increasing the reservation (i.e. receive less pages than we asked for) then we may as well keep those pages rather than returning them to Xen. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Stable Kernel <stable@kernel.org>
| * | Xen balloon: fix totalram_pages counting.Gianluca Guida2009-12-041-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change totalram_pages when a single page is added/removed to the ballooned list. This avoid totalram_pages to be set erroneously to max_pfn at boot. Signed-off-by: Gianluca Guida <gianluca.guida@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
| * | xen: explicitly create/destroy stop_machine workqueues outside ↵Ian Campbell2009-12-031-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | suspend/resume region. I have observed cases where the implicit stop_machine_destroy() done by stop_machine() hangs while destroying the workqueues, specifically in kthread_stop(). This seems to be because timer ticks are not restarted until after stop_machine() returns. Fortunately stop_machine provides a facility to pre-create/post-destroy the workqueues so use this to ensure that workqueues are only destroyed after everything is really up and running again. I only actually observed this failure with 2.6.30. It seems that newer kernels are somehow more robust against doing kthread_stop() without timer interrupts (I tried some backports of some likely looking candidates but did not track down the commit which added this robustness). However this change seems like a reasonable belt&braces thing to do. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
| * | xen: improve error handling in do_suspend.Ian Campbell2009-12-031-9/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The existing error handling has a few issues: - If freeze_processes() fails it exits with shutting_down = SHUTDOWN_SUSPEND. - If dpm_suspend_noirq() fails it exits without resuming xenbus. - If stop_machine() fails it exits without resuming xenbus or calling dpm_resume_end(). - xs_suspend()/xs_resume() and dpm_suspend_noirq()/dpm_resume_noirq() were not nested in the obvious way. Fix by ensuring each failure case goto's the correct label. Treat a failure of stop_machine() as a cancelled suspend in order to follow the correct resume path. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
| * | xen: don't leak IRQs over suspend/resume.Ian Campbell2009-12-031-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On resume irq_info[*].evtchn is reset to 0 since event channel mappings are not preserved over suspend/resume. The other contents of irq_info is preserved to allow rebind_evtchn_irq() to function. However when a device resumes it will try to unbind from the previous IRQ (e.g. blkfront goes blkfront_resume() -> blkif_free() -> unbind_from_irqhandler() -> unbind_from_irq()). This will fail due to the check for VALID_EVTCHN in unbind_from_irq() and the IRQ is leaked. The device will then continue to resume and allocate a new IRQ, eventually leading to find_unbound_irq() panic()ing. Fix this by changing unbind_from_irq() to handle teardown of interrupts which have type!=IRQT_UNBOUND but are not currently bound to a specific event channel. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
| * | xen: don't call dpm_resume_noirq() with interrupts disabled.Jeremy Fitzhardinge2009-12-031-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | dpm_resume_noirq() takes a mutex, so it can't be called from a no-interrupt context. Don't call it from within the stop-machine function, but just afterwards, since we're resuming anyway, regardless of what happened. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
| * | xen: wait up to 5 minutes for device connetionPaolo Bonzini2009-12-031-4/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Increases the device timeout from 10s to 5 minutes, giving the user a visual indication during that time in case there are problems. The patch is a backport of changesets 144 and 150 in the Xenbits tree. Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | xen: improvement to wait_for_devices()Paolo Bonzini2009-12-031-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When printing a warning about a timed-out device, print the current state of both ends of the device connection (i.e., backend as well as frontend). This backports half of changeset 146 from the Xenbits tree. Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | xen: fix is_disconnected_device/exists_disconnected_devicePaolo Bonzini2009-12-031-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The logic of is_disconnected_device/exists_disconnected_device is wrong in that they are used to test whether a device is trying to connect (i.e. connecting). For this reason the patch fixes them to not consider a Closing or Closed device to be connecting. At the same time the patch also renames the functions according to what they really do; you could say a closed device is "disconnected" (the old name), but not "connecting" (the new name). This patch is a backport of changeset 909 from the Xenbits tree. Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | xen/xenbus: make DEVICE_ATTR()s staticJeremy Fitzhardinge2009-12-031-3/+3
| |/ | | | | | | | | | | | | They don't need to be global, and may cause linker clashes. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
* | cpumask: Use modern cpumask style in XenRusty Russell2009-11-041-1/+1
|/ | | | | | | Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> LKML-Reference: <200911031458.38406.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* headers: remove sched.h from poll.hAlexey Dobriyan2009-10-041-0/+1
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-09-221-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits) trivial: fix typo in aic7xxx comment trivial: fix comment typo in drivers/ata/pata_hpt37x.c trivial: typo in kernel-parameters.txt trivial: fix typo in tracing documentation trivial: add __init/__exit macros in drivers/gpio/bt8xxgpio.c trivial: add __init macro/ fix of __exit macro location in ipmi_poweroff.c trivial: remove unnecessary semicolons trivial: Fix duplicated word "options" in comment trivial: kbuild: remove extraneous blank line after declaration of usage() trivial: improve help text for mm debug config options trivial: doc: hpfall: accept disk device to unload as argument trivial: doc: hpfall: reduce risk that hpfall can do harm trivial: SubmittingPatches: Fix reference to renumbered step trivial: fix typos "man[ae]g?ment" -> "management" trivial: media/video/cx88: add __init/__exit macros to cx88 drivers trivial: fix typo in CONFIG_DEBUG_FS in gcov doc trivial: fix missing printk space in amd_k7_smp_check trivial: fix typo s/ketymap/keymap/ in comment trivial: fix typo "to to" in multiple files trivial: fix typos in comments s/DGBU/DBGU/ ...
| * trivial: remove unnecessary semicolonsJoe Perches2009-09-211-1/+1
| | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | mm: replace various uses of num_physpages by totalram_pagesJan Beulich2009-09-221-4/+0
|/ | | | | | | | | | | | | | | | | | | | | | | Sizing of memory allocations shouldn't depend on the number of physical pages found in a system, as that generally includes (perhaps a huge amount of) non-RAM pages. The amount of what actually is usable as storage should instead be used as a basis here. Some of the calculations (i.e. those not intending to use high memory) should likely even use (totalram_pages - totalhigh_pages). Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Dave Airlie <airlied@linux.ie> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* includecheck fix: drivers/xen, evtchn.cJaswinder Singh Rajput2009-09-201-1/+0
| | | | | | | | | | | | fix the following 'make includecheck' warning: drivers/xen/evtchn.c: linux/errno.h is included more than once. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: chrisw@sous-sol.org Cc: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <1247067749.4382.90.camel@ht.satnam> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-09-151-6/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (46 commits) powerpc64: convert to dynamic percpu allocator sparc64: use embedding percpu first chunk allocator percpu: kill lpage first chunk allocator x86,percpu: use embedding for 64bit NUMA and page for 32bit NUMA percpu: update embedding first chunk allocator to handle sparse units percpu: use group information to allocate vmap areas sparsely vmalloc: implement pcpu_get_vm_areas() vmalloc: separate out insert_vmalloc_vm() percpu: add chunk->base_addr percpu: add pcpu_unit_offsets[] percpu: introduce pcpu_alloc_info and pcpu_group_info percpu: move pcpu_lpage_build_unit_map() and pcpul_lpage_dump_cfg() upward percpu: add @align to pcpu_fc_alloc_fn_t percpu: make @dyn_size mandatory for pcpu_setup_first_chunk() percpu: drop @static_size from first chunk allocators percpu: generalize first chunk allocator selection percpu: build first chunk allocators selectively percpu: rename 4k first chunk allocator to page percpu: improve boot messages percpu: fix pcpu_reclaim() locking ... Fix trivial conflict as by Tejun Heo in kernel/sched.c
| * Merge branch 'percpu-for-linus' into percpu-for-nextTejun Heo2009-08-141-2/+2
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/sparc/kernel/smp_64.c arch/x86/kernel/cpu/perf_counter.c arch/x86/kernel/setup_percpu.c drivers/cpufreq/cpufreq_ondemand.c mm/percpu.c Conflicts in core and arch percpu codes are mostly from commit ed78e1e078dd44249f88b1dd8c76dafb39567161 which substituted many num_possible_cpus() with nr_cpu_ids. As for-next branch has moved all the first chunk allocators into mm/percpu.c, the changes are moved from arch code to mm/percpu.c. Signed-off-by: Tejun Heo <tj@kernel.org>
| * | percpu: clean up percpu variable definitionsTejun Heo2009-06-241-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Percpu variable definition is about to be updated such that all percpu symbols including the static ones must be unique. Update percpu variable definitions accordingly. * as,cfq: rename ioc_count uniquely * cpufreq: rename cpu_dbs_info uniquely * xen: move nesting_count out of xen_evtchn_do_upcall() and rename it * mm: move ratelimits out of balance_dirty_pages_ratelimited_nr() and rename it * ipv4,6: rename cookie_scratch uniquely * x86 perf_counter: rename prev_left to pmc_prev_left, irq_entry to pmc_irq_entry and nmi_entry to pmc_nmi_entry * perf_counter: rename disable_count to perf_disable_count * ftrace: rename test_event_disable to ftrace_test_event_disable * kmemleak: rename test_pointer to kmemleak_test_pointer * mce: rename next_interval to mce_next_interval [ Impact: percpu usage cleanups, no duplicate static percpu var names ] Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Dave Jones <davej@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: linux-mm <linux-mm@kvack.org> Cc: David S. Miller <davem@davemloft.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <srostedt@redhat.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Andi Kleen <andi@firstfloor.org>
| * | percpu: cleanup percpu array definitionsTejun Heo2009-06-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the following three different ways to define percpu arrays are in use. 1. DEFINE_PER_CPU(elem_type[array_len], array_name); 2. DEFINE_PER_CPU(elem_type, array_name[array_len]); 3. DEFINE_PER_CPU(elem_type, array_name)[array_len]; Unify to #1 which correctly separates the roles of the two parameters and thus allows more flexibility in the way percpu variables are defined. [ Impact: cleanup ] Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Tony Luck <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: linux-mm@kvack.org Cc: Christoph Lameter <cl@linux-foundation.org> Cc: David S. Miller <davem@davemloft.net>
* | | xen: make -fstack-protector work under XenJeremy Fitzhardinge2009-09-091-0/+3
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -fstack-protector uses a special per-cpu "stack canary" value. gcc generates special code in each function to test the canary to make sure that the function's stack hasn't been overrun. On x86-64, this is simply an offset of %gs, which is the usual per-cpu base segment register, so setting it up simply requires loading %gs's base as normal. On i386, the stack protector segment is %gs (rather than the usual kernel percpu %fs segment register). This requires setting up the full kernel GDT and then loading %gs accordingly. We also need to make sure %gs is initialized when bringing up secondary cpus too. To keep things consistent, we do the full GDT/segment register setup on both architectures. Because we need to avoid -fstack-protected code before setting up the GDT and because there's no way to disable it on a per-function basis, several files need to have stack-protector inhibited. [ Impact: allow Xen booting with stack-protector enabled ] Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* | xen: Use kcalloc() in xen_init_IRQ()Pekka Enberg2009-07-011-2/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The init_IRQ() function is now called with slab allocator initialized. Therefore, we must not use the bootmem allocator in xen_init_IRQ(). Fixes the following boot-time warning: ------------[ cut here ]------------ WARNING: at mm/bootmem.c:535 alloc_arch_preferred_bootmem+0x27/0x45() Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.30 #1 Call Trace: [<ffffffff8102d6e3>] ? warn_slowpath_common+0x73/0xb0 [<ffffffff810210d9>] ? pvclock_clocksource_read+0x49/0x90 [<ffffffff812e522f>] ? alloc_arch_preferred_bootmem+0x27/0x45 [<ffffffff812e5761>] ? ___alloc_bootmem_nopanic+0x39/0xc9 [<ffffffff812e57fa>] ? ___alloc_bootmem+0x9/0x2f [<ffffffff812e9e21>] ? xen_init_IRQ+0x25/0x61 [<ffffffff812d69ee>] ? start_kernel+0x1b5/0x29e ---[ end trace 4eaa2a86a8e2da22 ]--- Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Tested-by: Christian Kujau <lists@nerdbynature.de> Reported-by: Christian Kujau <lists@nerdbynature.de> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: lists@nerdbynature.de Cc: jeremy.fitzhardinge@citrix.com LKML-Reference: <1246438278.22417.28.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* PM core: rename suspend and resume functionsAlan Stern2009-06-121-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as1241) renames a bunch of functions in the PM core. Rather than go through a boring list of name changes, suffice it to say that in the end we have a bunch of pairs of functions: device_resume_noirq dpm_resume_noirq device_resume dpm_resume device_complete dpm_complete device_suspend_noirq dpm_suspend_noirq device_suspend dpm_suspend device_prepare dpm_prepare in which device_X does the X operation on a single device and dpm_X invokes device_X for all devices in the dpm_list. In addition, the old dpm_power_up and device_resume_noirq have been combined into a single function (dpm_resume_noirq). Lastly, dpm_suspend_start and dpm_resume_end are the renamed versions of the former top-level device_suspend and device_resume routines. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Rename device_power_down/up()Magnus Damm2009-06-121-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | Rename the functions performing "_noirq" dev_pm_ops operations from device_power_down() and device_power_up() to device_suspend_noirq() and device_resume_noirq(). The new function names are chosen to show that the functions are responsible for calling the _noirq() versions to finalize the suspend/resume operation. The current function names do not perform power down/up anymore so the names may be misleading. Global function renames: - device_power_down() -> device_suspend_noirq() - device_power_up() -> device_resume_noirq() Static function renames: - suspend_device_noirq() -> __device_suspend_noirq() - resume_device_noirq() -> __device_resume_noirq() Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Len Brown <lenb@kernel.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* Merge branch 'x86-xen-for-linus' of ↵Linus Torvalds2009-06-109-58/+1015
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (42 commits) xen: cache cr0 value to avoid trap'n'emulate for read_cr0 xen/x86-64: clean up warnings about IST-using traps xen/x86-64: fix breakpoints and hardware watchpoints xen: reserve Xen start_info rather than e820 reserving xen: add FIX_TEXT_POKE to fixmap lguest: update lazy mmu changes to match lguest's use of kvm hypercalls xen: honour VCPU availability on boot xen: add "capabilities" file xen: drop kexec bits from /sys/hypervisor since kexec isn't implemented yet xen/sys/hypervisor: change writable_pt to features xen: add /sys/hypervisor support xen/xenbus: export xenbus_dev_changed xen: use device model for suspending xenbus devices xen: remove suspend_cancel hook xen/dev-evtchn: clean up locking in evtchn xen: export ioctl headers to userspace xen: add /dev/xen/evtchn driver xen: add irq_from_evtchn xen: clean up gate trap/interrupt constants xen: set _PAGE_NX in __supported_pte_mask before pagetable construction ...
| * Merge branch 'x86/urgent' into x86/xenIngo Molnar2009-05-081-1/+2
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/frv/include/asm/pgtable.h arch/x86/include/asm/required-features.h arch/x86/xen/mmu.c Merge reason: x86/xen was on a .29 base still, move it to a fresher branch and pick up Xen fixes as well, plus resolve conflicts Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * \ Merge commit 'origin/master' into for-linus/xen/masterJeremy Fitzhardinge2009-04-073-9/+12
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * commit 'origin/master': (4825 commits) Fix build errors due to CONFIG_BRANCH_TRACER=y parport: Use the PCI IRQ if offered tty: jsm cleanups Adjust path to gpio headers KGDB_SERIAL_CONSOLE check for module Change KCONFIG name tty: Blackin CTS/RTS Change hardware flow control from poll to interrupt driven Add support for the MAX3100 SPI UART. lanana: assign a device name and numbering for MAX3100 serqt: initial clean up pass for tty side tty: Use the generic RS485 ioctl on CRIS tty: Correct inline types for tty_driver_kref_get() splice: fix deadlock in splicing to file nilfs2: support nanosecond timestamp nilfs2: introduce secondary super block nilfs2: simplify handling of active state of segments nilfs2: mark minor flag for checkpoint created by internal operation nilfs2: clean up sketch file nilfs2: super block operations fix endian bug ... Conflicts: arch/x86/include/asm/thread_info.h arch/x86/lguest/boot.c drivers/xen/manage.c
| * \ \ Merge branch 'for-linus/xen/core' into for-linus/xen/masterJeremy Fitzhardinge2009-04-071-10/+30
| |\ \ \ | | | | | | | | | | | | | | | | | | | | * for-linus/xen/core: xen: honour VCPU availability on boot
| | * | | xen: honour VCPU availability on bootIan Campbell2009-04-021-10/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a VM is booted with offline VCPUs then unplug them during boot. Determining the availability of a VCPU requires access to XenStore which is not available at the point smp_prepare_cpus() is called, therefore we bring up all VCPUS initially and unplug the offline ones as soon as XenStore becomes available. Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
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| *-----. \ \ \ Merge branches 'for-linus/xen/dev-evtchn', 'for-linus/xen/xenbus', ↵Jeremy Fitzhardinge2009-03-309-58/+1015
| |\ \ \ \ \ \ \ | | |_|_|_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'for-linus/xen/xenfs' and 'for-linus/xen/sys-hypervisor' into for-linus/xen/master * for-linus/xen/dev-evtchn: xen/dev-evtchn: clean up locking in evtchn xen: export ioctl headers to userspace xen: add /dev/xen/evtchn driver xen: add irq_from_evtchn * for-linus/xen/xenbus: xen/xenbus: export xenbus_dev_changed xen: use device model for suspending xenbus devices xen: remove suspend_cancel hook * for-linus/xen/xenfs: xen: add "capabilities" file * for-linus/xen/sys-hypervisor: xen: drop kexec bits from /sys/hypervisor since kexec isn't implemented yet xen/sys/hypervisor: change writable_pt to features xen: add /sys/hypervisor support Conflicts: drivers/xen/Makefile
| | | | | * | | xen: drop kexec bits from /sys/hypervisor since kexec isn't implemented yetIan Campbell2009-03-301-41/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I needed this to compile since there is no kexec yet in pvops kernel CC drivers/xen/sys-hypervisor.o drivers/xen/sys-hypervisor.c: In function 'hyper_sysfs_init': drivers/xen/sys-hypervisor.c:405: error: 'vmcoreinfo_size_xen' undeclared (first use in this function) drivers/xen/sys-hypervisor.c:405: error: (Each undeclared identifier is reported only once drivers/xen/sys-hypervisor.c:405: error: for each function it appears in.) drivers/xen/sys-hypervisor.c:406: error: implicit declaration of function 'xen_sysfs_vmcoreinfo_init' drivers/xen/sys-hypervisor.c: In function 'hyper_sysfs_exit': drivers/xen/sys-hypervisor.c:433: error: 'vmcoreinfo_size_xen' undeclared (first use in this function) drivers/xen/sys-hypervisor.c:434: error: implicit declaration of function 'xen_sysfs_vmcoreinfo_destroy' Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
| | | | | * | | xen/sys/hypervisor: change writable_pt to featuresJeremy Fitzhardinge2009-03-301-15/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | /sys/hypervisor/properties/writable_pt was misnamed. Rename to features, expressed as a bit array in hex. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| | | | | * | | xen: add /sys/hypervisor supportJeremy Fitzhardinge2009-03-303-1/+487
| | |_|_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds support for Xen info under /sys/hypervisor. Taken from Novell 2.6.27 backport tree. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| | | | * | | xen: add "capabilities" fileJeremy Fitzhardinge2009-03-301-1/+18
| | |_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The xenfs capabilities file allows usermode to determine what capabilities the domain has. The only one at present is "control_d" in a privileged domain. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| | | * | | xen/xenbus: export xenbus_dev_changedJeremy Fitzhardinge2009-03-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| | | * | | xen: use device model for suspending xenbus devicesIan Campbell2009-03-303-33/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| | | * | | xen: remove suspend_cancel hookIan Campbell2009-03-301-23/+0
| | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove suspend_cancel hook from xenbus_driver, in preparation for using the device model for suspending. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| | * | | xen/dev-evtchn: clean up locking in evtchnJeremy Fitzhardinge2009-03-301-12/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define a new per_user_data mutex to serialize bind/unbind operations to prevent them from racing with each other. Fix error returns and don't do a bind while holding a spinlock. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| | * | | xen: add /dev/xen/evtchn driverIan Campbell2009-03-303-1/+506
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver is used by application which wish to receive notifications from the hypervisor or other guests via Xen's event channel mechanism. In particular it is used by the xenstore daemon in domain 0. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| | * | | xen: add irq_from_evtchnIan Campbell2009-03-301-0/+6
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | Given an evtchn, return the corresponding irq. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: resume interrupts before system devices.Ian Campbell2009-03-301-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: bugfix Xen domain restore Otherwise the first timer interrupt after resume is missed and we never get another. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* | | | Merge branch 'x86/apic' into irq/numaIngo Molnar2009-05-121-1/+2
|\ \ \ \ | | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | Merge reason: both topics modify the APIC code but were able to do it in parallel so far. An upcoming patch generates a conflict so merge them to avoid the conflict. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | [IA64] xen_domu_defconfig: fix build issues/warningsJan Beulich2009-05-051-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - drivers/xen/events.c did not compile - xen_setup_hook caused a modpost section warning - the use of u64 (instead of unsigned long long) together with a %llu in drivers/xen/balloon.c caused a compiler warning Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | | x86/irq: change irq_desc_alloc() to take node instead of cpuYinghai Lu2009-04-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This simplifies the node awareness of the code. All our allocators only deal with a NUMA node ID locality not with CPU ids anyway - so there's no need to maintain (and transform) a CPU id all across the IRq layer. v2: keep move_irq_desc related [ Impact: cleanup, prepare IRQ code to be NUMA-aware ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jeremy Fitzhardinge <jeremy@goop.org> LKML-Reference: <49F65536.2020300@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | irq: change ->set_affinity() to return statusYinghai Lu2009-04-281-5/+7
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | according to Ingo, change set_affinity() in irq_chip should return int, because that way we can handle failure cases in a much cleaner way, in the genirq layer. v2: fix two typos [ Impact: extend API ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: linux-arch@vger.kernel.org LKML-Reference: <49F654E9.4070809@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | xen: honour VCPU availability on bootIan Campbell2009-04-081-10/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | If a VM is booted with offline VCPUs then unplug them during boot. Determining the availability of a VCPU requires access to XenStore which is not available at the point smp_prepare_cpus() is called, therefore we bring up all VCPUS initially and unplug the offline ones as soon as XenStore becomes available. Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
generated by cgit v1.1 at 2024-12-27 08:10:03 +0000