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* KVM: Enable snooping control for supported hardwareSheng Yang2009-06-10
| | | | | | | | | | | | | | | | Memory aliases with different memory type is a problem for guest. For the guest without assigned device, the memory type of guest memory would always been the same as host(WB); but for the assigned device, some part of memory may be used as DMA and then set to uncacheable memory type(UC/WC), which would be a conflict of host memory type then be a potential issue. Snooping control can guarantee the cache correctness of memory go through the DMA engine of VT-d. [avi: fix build on ia64] Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Make kvm header C++ friendlynathan binkert2009-06-10
| | | | | | | | | | Two things needed fixing: 1) g++ does not allow a named structure type within an anonymous union and 2) Avoid name clash between two padding fields within the same struct by giving them different names as is done elsewhere in the header. Signed-off-by: Nathan Binkert <nate@binkert.org> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Fix interrupt unhalting a vcpu when it shouldn'tGleb Natapov2009-06-10
| | | | | | | | kvm_vcpu_block() unhalts vpu on an interrupt/timer without checking if interrupt window is actually opened. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Device assignment framework reworkSheng Yang2009-06-10
| | | | | | | | | | | | | | | | | | | | | | | After discussion with Marcelo, we decided to rework device assignment framework together. The old problems are kernel logic is unnecessary complex. So Marcelo suggest to split it into a more elegant way: 1. Split host IRQ assign and guest IRQ assign. And userspace determine the combination. Also discard msi2intx parameter, userspace can specific KVM_DEV_IRQ_HOST_MSI | KVM_DEV_IRQ_GUEST_INTX in assigned_irq->flags to enable MSI to INTx convertion. 2. Split assign IRQ and deassign IRQ. Import two new ioctls: KVM_ASSIGN_DEV_IRQ and KVM_DEASSIGN_DEV_IRQ. This patch also fixed the reversed _IOR vs _IOW in definition(by deprecated the old interface). [avi: replace homemade bitcount() by hweight_long()] Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: APIC: get rid of deliver_bitmaskGleb Natapov2009-06-10
| | | | | | | | Deliver interrupt during destination matching loop. Signed-off-by: Gleb Natapov <gleb@redhat.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* KVM: consolidate ioapic/ipi interrupt delivery logicGleb Natapov2009-06-10
| | | | | | | | | | Use kvm_apic_match_dest() in kvm_get_intr_delivery_bitmask() instead of duplicating the same code. Use kvm_get_intr_delivery_bitmask() in apic_send_ipi() to figure out ipi destination instead of reimplementing the logic. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* KVM: ioapic/msi interrupt delivery consolidationGleb Natapov2009-06-10
| | | | | | | | | ioapic_deliver() and kvm_set_msi() have code duplication. Move the code into ioapic_deliver_entry() function and call it from both places. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* KVM: declare ioapic functions only on affected hardwareChristian Borntraeger2009-06-10
| | | | | | | | | | | | | | | Since "KVM: Unify the delivery of IOAPIC and MSI interrupts" I get the following warnings: CC [M] arch/s390/kvm/kvm-s390.o In file included from arch/s390/kvm/kvm-s390.c:22: include/linux/kvm_host.h:357: warning: 'struct kvm_ioapic' declared inside parameter list include/linux/kvm_host.h:357: warning: its scope is only this definition or declaration, which is probably not what you want This patch limits IOAPIC functions for architectures that have one. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Enable MSI-X for KVM assigned deviceSheng Yang2009-06-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch finally enable MSI-X. What we need for MSI-X: 1. Intercept one page in MMIO region of device. So that we can get guest desired MSI-X table and set up the real one. Now this have been done by guest, and transfer to kernel using ioctl KVM_SET_MSIX_NR and KVM_SET_MSIX_ENTRY. 2. Information for incoming interrupt. Now one device can have more than one interrupt, and they are all handled by one workqueue structure. So we need to identify them. The previous patch enable gsi_msg_pending_bitmap get this done. 3. Mapping from host IRQ to guest gsi as well as guest gsi to real MSI/MSI-X message address/data. We used same entry number for the host and guest here, so that it's easy to find the correlated guest gsi. What we lack for now: 1. The PCI spec said nothing can existed with MSI-X table in the same page of MMIO region, except pending bits. The patch ignore pending bits as the first step (so they are always 0 - no pending). 2. The PCI spec allowed to change MSI-X table dynamically. That means, the OS can enable MSI-X, then mask one MSI-X entry, modify it, and unmask it. The patch didn't support this, and Linux also don't work in this way. 3. The patch didn't implement MSI-X mask all and mask single entry. I would implement the former in driver/pci/msi.c later. And for single entry, userspace should have reposibility to handle it. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Add MSI-X interrupt injection logicSheng Yang2009-06-10
| | | | | | | | We have to handle more than one interrupt with one handler for MSI-X. Avi suggested to use a flag to indicate the pending. So here is it. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Ioctls for init MSI-X entrySheng Yang2009-06-10
| | | | | | | | | | | | | | Introduce KVM_SET_MSIX_NR and KVM_SET_MSIX_ENTRY two ioctls. This two ioctls are used by userspace to specific guest device MSI-X entry number and correlate MSI-X entry with GSI during the initialization stage. MSI-X should be well initialzed before enabling. Don't support change MSI-X entry number for now. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Unify the delivery of IOAPIC and MSI interruptsSheng Yang2009-06-10
| | | | | Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Split IOAPIC structureSheng Yang2009-06-10
| | | | | | | Prepared for reuse ioapic_redir_entry for MSI. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* cpumask: introduce zalloc_cpumask_varYinghai Lu2009-06-09
| | | | | | | So can get cpumask_var with cpumask_clear Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2009-06-08
|\ | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 5543/1: arm: serial amba: add missing declaration in serial.h [ARM] pxa: fix pxa27x_udc default pullup GPIO [ARM] pxa/imote2: fix UCAM sensor board ADC model number mx[23]: don't put clock lookups in __initdata fix oops when using console=ttymxcN with N > 0 [ARM] ARMv7 errata: only apply fixes when running on applicable CPU [ARM] 5534/1: kmalloc must return a cache line aligned buffer
| * [ARM] 5543/1: arm: serial amba: add missing declaration in serial.hAlessandro Rubini2009-06-07
| | | | | | | | | | | | | | | | | | | | This header is sometimes included in the uncompress stage to get register values, but no <linux/amba/bus.h> can be included there. So declare "struct amba_device" here before using it in a prototype. Signed-off-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Andrea Gallo <andrea.gallo@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | ptrace: tracehook_report_clone: fix false positivesOleg Nesterov2009-06-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The "trace || CLONE_PTRACE" check in tracehook_report_clone() is not right, - If the untraced task does clone(CLONE_PTRACE) the new child is not traced, we must not queue SIGSTOP. - If we forked the traced task, but the tracer exits and untraces both the forking task and the new child (after copy_process() drops tasklist_lock), we should not queue SIGSTOP too. Change the code to check task_ptrace() != 0 instead. This is still racy, but the race is harmless. We can race with another tracer attaching to this child, or the tracer can exit and detach in parallel. But giwen that we didn't do wake_up_new_task() yet, the child must have the pending SIGSTOP anyway. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | drm: Hook up DPMS property handling in drm_crtc.c. Add ↵Keith Packard2009-06-03
|/ | | | | | | | | | | | | | | | | | | | drm_helper_connector_dpms. Making the drm_crtc.c code recognize the DPMS property and invoke the connector->dpms function doesn't remove any capability from the driver while reducing code duplication. That just highlighted the problem with the existing DPMS functions which could turn off the connector, but failed to turn off any relevant crtcs. The new drm_helper_connector_dpms function manages all of that, using the drm_helper-specific crtc and encoder dpms functions, automatically computing the appropriate DPMS level for each object in the system. This fixes the current troubles in the i915 driver which left PLLs, pipes and planes running while in DPMS_OFF mode or even while they were unused. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
* parport: quickfix the proc registration bugAlan Cox2009-06-02
| | | | | | | | | | | | | | Ideally we should have a directory of drivers and a link to the 'active' driver. For now just show the first device which is effectively the existing semantics without a warning. This is an update on the original buggy patch that I then forgot to resubmit. Confusingly it was proposed by Red Hat, written by Etched Pixels fixed and submitted by Intel ... Resolves-Bug: http://bugzilla.kernel.org/show_bug.cgi?id=9749 Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-06-01
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: 3c509: Add missing EISA IDs MAINTAINERS: take maintainership of the cpmac Ethernet driver net/firmare: Ignore .cis files ath1e: add new device id for asus hardware mlx4_en: Fix a kernel panic when waking tx queue rtl8187: add USB ID for Linksys WUSB54GC-EU v2 USB wifi dongle at76c50x-usb: avoid mutex deadlock in at76_dwork_hw_scan mac8390: fix build with NET_POLL_CONTROLLER cxgb3: link fault fixes cxgb3: fix dma mapping regression netfilter: nfnetlink_log: fix wrong skbuff size calculation netfilter: xt_hashlimit does a wrong SEQ_SKIP bfin_mac: fix build error due to net_device_ops convert atlx: move modinfo data from atlx.h to atl1.c gianfar: fix babbling rx error event bug cls_cgroup: read classid atomically in classifier netfilter: nf_ct_dccp: add missing DCCP protocol changes in event cache netfilter: nf_ct_tcp: fix accepting invalid RST segments
| * Merge branch 'master' of ↵David S. Miller2009-05-27
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
| | * netfilter: nf_ct_tcp: fix accepting invalid RST segmentsJozsef Kadlecsik2009-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Robert L Mathews discovered that some clients send evil TCP RST segments, which are accepted by netfilter conntrack but discarded by the destination. Thus the conntrack entry is destroyed but the destination retransmits data until timeout. The same technique, i.e. sending properly crafted RST segments, can easily be used to bypass connlimit/connbytes based restrictions (the sample script written by Robert can be found in the netfilter mailing list archives). The patch below adds a new flag and new field to struct ip_ct_tcp_state so that checking RST segments can be made more strict and thus TCP conntrack can catch the invalid ones: the RST segment is accepted only if its sequence number higher than or equal to the highest ack we seen from the other direction. (The last_ack field cannot be reused because it is used to catch resent packets.) Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/jaswinder/headers-check-2.6Linus Torvalds2009-06-01
|\ \ \ | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jaswinder/headers-check-2.6: headers_check fix: linux/net_dropmon.h headers_check fix: linux/auto_fs.h
| * | | headers_check fix: linux/net_dropmon.hJaswinder Singh Rajput2009-06-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix the following 'make headers_check' warnings: usr/include/linux/net_dropmon.h:7: found __[us]{8,16,32,64} type without #include <linux/types.h> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
| * | | headers_check fix: linux/auto_fs.hJaswinder Singh Rajput2009-06-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix the following 'make headers_check' warnings: usr/include/linux/auto_fs.h:17: include of <linux/types.h> is preferred over <asm/types.h> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
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*---. \ \ \ Merge branches 'bugzilla-13121+', 'bugzilla-13233', ↵Len Brown2009-05-29
|\ \ \ \ \ \ | |_|_|/ / / |/| | | | | | | | | | | 'redhat-bugzilla-500311', 'pci-bind-oops', 'misc-2.6.30' and 'i7300_idle' into release
| | | * | | i7300_idle: allow testing on i5000-series hardware w/o re-compileLen Brown2009-05-28
| | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Testing the i7300_idle driver on i5000-series hardware required an edit to i7300_idle.h to "#define SUPPORT_I5000 1" and a re-build of both i7300_idle and ioat_dma. Replace that build-time scheme with a load-time module parameter: "7300_idle.forceload=1" to make it easier to test the driver on hardware that while not officially validated, works fine and is much more commonly available. By default (no modparam) the driver will continue to load only on the i7300. Note that ioat_dma runs a copy of i7300_idle's probe routine to know to reserve an IOAT channel for i7300_idle. This change makes ioat_dma do that always on the i5000, just like it does on the i7300. Signed-off-by: Len Brown <len.brown@intel.com> Acked-by: Andrew Henroid <andrew.d.henroid@intel.com>
* | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-05-29
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: libps2 - better handle bad scheduler decisions Input: usb1400_ts - fix access to "device data" in resume function Input: multitouch - augment event semantics documentation Input: multitouch - add tracking ID to the protocol
| * | | | | Input: multitouch - add tracking ID to the protocolHenrik Rydberg2009-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a few multi-touch devices that support finger tracking well in hardware, Stantum being the prime example. By exposing the tracking ID in the MT protocol, evdev bandwidth and cpu usage in user space can be reduced. This patch adds the ABS_MT_TRACKING_ID to the MT protocol. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Tested-by: Stéphane Chatty <chatty@enac.fr> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* | | | | | memcg: fix deadlock between lock_page_cgroup and mapping tree_lockDaisuke Nishimura2009-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mapping->tree_lock can be acquired from interrupt context. Then, following dead lock can occur. Assume "A" as a page. CPU0: lock_page_cgroup(A) interrupted -> take mapping->tree_lock. CPU1: take mapping->tree_lock -> lock_page_cgroup(A) This patch tries to fix above deadlock by moving memcg's hook to out of mapping->tree_lock. charge/uncharge of pagecache/swapcache is protected by page lock, not tree_lock. After this patch, lock_page_cgroup() is not called under mapping->tree_lock. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | cred: #include init.h in cred.hAlexey Dobriyan2009-05-29
| |/ / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | linux/cred.h can't be included as first header (alphabetical order) because it uses __init which is enough to break compilation on some archs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: James Morris <jmorris@namei.org> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-05-26
|\ \ \ \ \ | |_|/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: Add support for VGA load detection (pre-945). drm/i915: Use an I2C algo to do the flip to SDVO DDC bus. drm/i915: Determine type before initialising connector drm/i915: Return SDVO LVDS VBT mode if no EDID modes are detected. drm/i915: Fetch SDVO LVDS mode lines from VBT, then reserve them i915: support 8xx desktop cursors drm/i915: allocate large pointer arrays with vmalloc
| * | | | drm/i915: allocate large pointer arrays with vmallocJesse Barnes2009-05-19
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For awhile now, many of the GEM code paths have allocated page or object arrays with the slab allocator. This is nice and fast, but won't work well if memory is fragmented, since the slab allocator works with physically contiguous memory (i.e. order > 2 allocations are likely to fail fairly early after booting and doing some work). This patch works around the issue by falling back to vmalloc for >PAGE_SIZE allocations. This is ugly, but much less work than chaining a bunch of pages together by hand (suprisingly there's not a bunch of generic kernel helpers for this yet afaik). vmalloc space is somewhat precious on 32 bit kernels, but our allocations shouldn't be big enough to cause problems, though they're routinely more than a page. Note that this patch doesn't address the unchecked alloc-based-on-ioctl-args in GEM; that needs to be fixed in a separate patch. Also, I've deliberately ignored the DRM's "area" junk. I don't think anyone actually uses it anymore and I'm hoping it gets ripped out soon. [Updated: removed size arg to new free function. We could unify the free functions as well once the DRM mem tracking is ripped out.] fd.o bug #20152 (part 1/3) Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds2009-05-23
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] mpt2sas: fix driver version inconsistency [SCSI] 3w-xxxx: scsi_dma_unmap fix [SCSI] 3w-9xxx: scsi_dma_unmap fix [SCSI] ses: fix problems caused by empty SES provided name [SCSI] fc-transport: Close state transition-window during rport deletion. [SCSI] initialize max_target_blocked in scsi_alloc_target [SCSI] fnic: Add new Cisco PCI-Express FCoE HBA
| * | | | [SCSI] fc-transport: Close state transition-window during rport deletion.Andrew Vasquez2009-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Andrew Vasquez wrote: > fc-transport: Close state transition-window during rport deletion. > > After an rport's state has transitioned to FC_PORTSTATE_BLOCKED, > but, prior to making the upcall to 'block' the scsi-target > associated with an rport, queued commands can recycle and > ultimately run out of retries causing failures to propagate to > upper-level drivers. Close this transition-window by returning > the non-'retries' modifying DID_IMM_RETRY status for submitted > I/Os. The same can happen for iscsi when transitioning from logged in to failed and blocking the sdevs. This patch converts iscsi and fc's transitions back to use DID_IMM_RETRY instead of DID_TRANSPORT_DISRUPTED which has a limited number of retries that we do not want to use for handling this race. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> [Addition of iscsi and fc port online devloss case conversion by Mike Christie] Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-05-22
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: via82cxxx: Add VIA VX855 PCI Device ID ide: report timeouts in ide_busy_sleep() ide: improve failed opcode reporting ide: fix printk() levels in ide_dump_ata[pi]_error() ide: fix OOPS during ide-cd error recovery ide: fix 40-wire cable detection for TSST SH-S202* ATAPI devices (v2)
| * | | | | via82cxxx: Add VIA VX855 PCI Device IDHarald Welte2009-05-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the PCI Device ID 0xc409 to the PCI ID table of via82cxxx.c, as well as the 0x8409 south bridge ID. This is required to make the IDE driver work on the VX855/VX875 integrated chipset. Signed-off-by: Harald Welte <HaraldWelte@viatech.com> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Bruce Chang <BruceChang@via.com.tw> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | | | ide: report timeouts in ide_busy_sleep()Bartlomiej Zolnierkiewicz2009-05-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * change 'hwif' argument to 'drive' * report an error on timeout Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | | | | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2009-05-20
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: (25 commits) [ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void * [ARM] 5517/1: integrator: don't put clock lookups in __initdata [ARM] 5518/1: versatile: don't put clock lookups in __initdata [ARM] mach-l7200: fix spelling of SYS_CLOCK_OFF [ARM] Double check memmap is actually valid with a memmap has unexpected holes V2 [ARM] realview: fix broadcast tick support [ARM] realview: remove useless smp_cross_call_done() [ARM] smp: fix cpumask usage in ARM SMP code [ARM] 5513/1: Eurotech VIPER SBC: fix compilation error [ARM] 5509/1: ep93xx: clkdev enable UARTS ARM: OMAP2/3: Change omapfb to use clkdev for dispc and rfbi, v2 ARM: OMAP3: Fix HW SAVEANDRESTORE shift define ARM: OMAP3: Fix number of GPIO lines for 34xx [ARM] S3C: Do not set clk->owner field if unset [ARM] S3C2410: mach-bast.c registering i2c data too early [ARM] S3C24XX: Fix unused code warning in arch/arm/plat-s3c24xx/dma.c [ARM] S3C64XX: fix GPIO debug [ARM] S3C64XX: GPIO include cleanup [ARM] nwfpe: fix 'floatx80_is_nan' sparse warning [ARM] nwfpe: Add decleration for ExtendedCPDO ...
| * | | | | | [ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void *Alessandro Rubini2009-05-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The second argument of the probe method points to the amba_id structure, so it's better passed with the correct type. None of the current in-tree drivers uses the pointer, so they have only been checked for a clean compile. Change suggested by Russell King. Signed-off-by: Alessandro Rubini <rubini@unipv.it> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | [ARM] Double check memmap is actually valid with a memmap has unexpected ↵Mel Gorman2009-05-18
| | |_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | holes V2 pfn_valid() is meant to be able to tell if a given PFN has valid memmap associated with it or not. In FLATMEM, it is expected that holes always have valid memmap as long as there is valid PFNs either side of the hole. In SPARSEMEM, it is assumed that a valid section has a memmap for the entire section. However, ARM and maybe other embedded architectures in the future free memmap backing holes to save memory on the assumption the memmap is never used. The page_zone linkages are then broken even though pfn_valid() returns true. A walker of the full memmap must then do this additional check to ensure the memmap they are looking at is sane by making sure the zone and PFN linkages are still valid. This is expensive, but walkers of the full memmap are extremely rare. This was caught before for FLATMEM and hacked around but it hits again for SPARSEMEM because the page_zone linkages can look ok where the PFN linkages are totally screwed. This looks like a hatchet job but the reality is that any clean solution would end up consumning all the memory saved by punching these unexpected holes in the memmap. For example, we tried marking the memmap within the section invalid but the section size exceeds the size of the hole in most cases so pfn_valid() starts returning false where valid memmap exists. Shrinking the size of the section would increase memory consumption offsetting the gains. This patch identifies when an architecture is punching unexpected holes in the memmap that the memory model cannot automatically detect and sets ARCH_HAS_HOLES_MEMORYMODEL. At the moment, this is restricted to EP93xx which is the model sub-architecture this has been reported on but may expand later. When set, walkers of the full memmap must call memmap_valid_within() for each PFN and passing in what it expects the page and zone to be for that PFN. If it finds the linkages to be broken, it assumes the memmap is invalid for that PFN. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | | | | asm-generic: fix local_add_unless macroRoel Kluin2009-05-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `local_add_unless(x, y, z)' will be expanded to `(&(x)->y, (y), (x))', but `&(x)->y' should be `&(x)->a' Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | reiserfs: fixup perms when xattrs are disabledJeff Mahoney2009-05-17
|/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds CONFIG_REISERFS_FS_XATTR protection from reiserfs_permission. This is needed to avoid warnings during file deletions and chowns with xattrs disabled. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge branch 'drm-intel-next' of ↵Linus Torvalds2009-05-15
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel * 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: Add new GET_PIPE_FROM_CRTC_ID ioctl. drm/i915: Set HDMI hot plug interrupt enable for only the output in question. drm/i915: Include 965GME pci ID in IS_I965GM(dev) to match UMS. drm/i915: Use the GM45 VGA hotplug workaround on G45 as well. drm/i915: ignore LVDS on intel graphics systems that lie about having it drm/i915: sanity check IER at wait_request time drm/i915: workaround IGD i2c bus issue in kernel side (v2) drm/i915: Don't allow binding objects into the last page of the aperture. drm/i915: save/restore fence registers across suspend/resume drm/i915: x86 always has writeq. Add I915_READ64 for symmetry.
| * | | | | drm/i915: Add new GET_PIPE_FROM_CRTC_ID ioctl.Carl Worth2009-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows userlevel code to discover the pipe number corresponding to a given CRTC ID. This is necessary for doing pipe-specific operations such as waiting for vblank on a given CRTC. Failure to use the right pipe mapping can result in GPU hangs, or at least failure to actually sync to vblank. Signed-off-by: Carl Worth <cworth@cworth.org> [anholt: Style touchups from review] Signed-off-by: Eric Anholt <eric@anholt.net>
* | | | | | libata: Media rotation rate and form factor heuristicsMartin K. Petersen2009-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides new heuristics for parsing both the form factor and media rotation rate ATA IDENFITY words. The reported ATA version must be 7 or greater and the device must return values defined as valid in the standard. Only then are the characteristics reported to SCSI via the VPD B1 page. This seems like a reasonable compromise to me considering that we have been shipping several kernel releases that key off the rotation rate bit without any version checking whatsoever. With no complaints so far. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | | | | | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2009-05-15
|\ \ \ \ \ \ | |_|_|/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: Revert "mm: add /proc controls for pdflush threads" viocd: needs to depend on BLOCK block: fix the bio_vec array index out-of-bounds test
| * | | | | Revert "mm: add /proc controls for pdflush threads"Jens Axboe2009-05-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit fafd688e4c0c34da0f3de909881117d374e4c7af. Work is progressing to switch away from pdflush as the process backing for flushing out dirty data. So it seems pointless to add more knobs to control pdflush threads. The original author of the patch did not have any specific use cases for adding the knobs, so we can easily revert this before 2.6.30 to avoid having to maintain this API forever. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | | | | Merge branch 'fixes' of ↵Linus Torvalds2009-05-12
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: dma: fix ipu_idmac.c to not discard the last queued buffer ioatdma: fix "ioatdma frees DMA memory with wrong function" ipu_idmac: Use disable_irq_nosync() from within irq handlers. dmatest: fix max channels handling
| * | | | | | ioatdma: fix "ioatdma frees DMA memory with wrong function"Maciej Sosnowski2009-05-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | as reported by Alexander Beregalov <a.beregalov@gmail.com> ioatdma 0000:00:08.0: DMA-API: device driver frees DMA memory with wrong function [device address=0x000000007f76f800] [size=2000 bytes] [map ped as single] [unmapped as page] The ioatdma driver was unmapping all regions (either allocated as page or single) using unmap_page. This patch lets dma driver recognize if unmap_single or unmap_page should be used. It introduces two new dma control flags: DMA_COMPL_SRC_UNMAP_SINGLE and DMA_COMPL_DEST_UNMAP_SINGLE. They should be set to indicate dma driver to do dma-unmapping as single (first one for the source, tha latter for the destination). If respective flag is not set, the driver assumes dma-unmapping as page. Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Tested-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>