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2017-07-29block: DAC960: shut up format-overflow warningArnd Bergmann
gcc-7 points out that a large controller number would overflow the string length for the procfs name and the firmware version string: drivers/block/DAC960.c: In function 'DAC960_Probe': drivers/block/DAC960.c:6591:38: warning: 'sprintf' may write a terminating nul past the end of the destination [-Wformat-overflow=] drivers/block/DAC960.c: In function 'DAC960_V1_ReadControllerConfiguration': drivers/block/DAC960.c:1681:40: error: '%02d' directive writing between 2 and 3 bytes into a region of size between 2 and 5 [-Werror=format-overflow=] drivers/block/DAC960.c:1681:40: note: directive argument in the range [0, 255] drivers/block/DAC960.c:1681:3: note: 'sprintf' output between 10 and 14 bytes into a destination of size 12 Both of these seem appropriately sized, and using snprintf() instead of sprintf() improves this by ensuring that even incorrect data won't cause undefined behavior here. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29block: use standard blktrace API to output cgroup info for debug notesShaohua Li
Currently cfq/bfq/blk-throttle output cgroup info in trace in their own way. Now we have standard blktrace API for this, so convert them to use it. Note, this changes the behavior a little bit. cgroup info isn't output by default, we only do this with 'blk_cgroup' option enabled. cgroup info isn't output as a string by default too, we only do this with 'blk_cgname' option enabled. Also cgroup info is output in different position of the note string. I think these behavior changes aren't a big issue (actually we make trace data shorter which is good), since the blktrace note is solely for debugging. Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29blktrace: add an option to allow displaying cgroup pathShaohua Li
By default we output cgroup id in blktrace. This adds an option to display cgroup path. Since get cgroup path is a relativly heavy operation, we don't enable it by default. with the option enabled, blktrace will output something like this: dd-1353 [007] d..2 293.015252: 8,0 /test/level D R 24 + 8 [dd] Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29block: always attach cgroup info into bioShaohua Li
blkcg_bio_issue_check() already gets blkcg for a BIO. bio_associate_blkcg() uses a percpu refcounter, so it's a very cheap operation. There is no point we don't attach the cgroup info into bio at blkcg_bio_issue_check. This also makes blktrace outputs correct cgroup info. Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29blktrace: export cgroup info in traceShaohua Li
Currently blktrace isn't cgroup aware. blktrace prints out task name of current context, but the task of current context isn't always in the cgroup where the BIO comes from. We can't use task name to find out IO cgroup. For example, Writeback BIOs always comes from flusher thread but the BIOs are for different blk cgroups. Request could be requeued and dispatched from completely different tasks. MD/DM are another examples. This patch tries to fix the gap. We print out cgroup fhandle info in blktrace. Userspace can use open_by_handle_at() syscall to find the cgroup by fhandle. Or userspace can use name_to_handle_at() syscall to find fhandle for a cgroup and use a BPF program to filter out blktrace for a specific cgroup. We add a new 'blk_cgroup' trace option for blk tracer. It's default off. Application which doesn't know the new option isn't affected. When it's on, we output fhandle info right after blk_io_trace with an extra bit set in event action. So from application point of view, blktrace with the option will output new actions. I didn't change blk trace event yet, since I'm not sure if changing the trace event output is an ABI issue. If not, I'll do it later. Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29cgroup: export fhandle info for a cgroupShaohua Li
Add an API to export cgroup fhandle info. We don't export a full 'struct file_handle', there are unrequired info. Sepcifically, cgroup is always a directory, so we don't need a 'FILEID_INO32_GEN_PARENT' type fhandle, we only need export the inode number and generation number just like what generic_fh_to_dentry does. And we can avoid the overhead of getting an inode too, since kernfs_node_id (ino and generation) has all the info required. Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29kernfs: add exportfs operationsShaohua Li
Now we have the facilities to implement exportfs operations. The idea is cgroup can export the fhandle info to userspace, then userspace uses fhandle to find the cgroup name. Another example is userspace can get fhandle for a cgroup and BPF uses the fhandle to filter info for the cgroup. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29kernfs: introduce kernfs_node_idShaohua Li
inode number and generation can identify a kernfs node. We are going to export the identification by exportfs operations, so put ino and generation into a separate structure. It's convenient when later patches use the identification. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29kernfs: don't set dentry->d_fsdataShaohua Li
When working on adding exportfs operations in kernfs, I found it's hard to initialize dentry->d_fsdata in the exportfs operations. Looks there is no way to do it without race condition. Look at the kernfs code closely, there is no point to set dentry->d_fsdata. inode->i_private already points to kernfs_node, and we can get inode from a dentry. So this patch just delete the d_fsdata usage. Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29kernfs: add an API to get kernfs node from inode numberShaohua Li
Add an API to get kernfs node from inode number. We will need this to implement exportfs operations. This API will be used in blktrace too later, so it should be as fast as possible. To make the API lock free, kernfs node is freed in RCU context. And we depend on kernfs_node count/ino number to filter out stale kernfs nodes. Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29kernfs: implement i_generationShaohua Li
Set i_generation for kernfs inode. This is required to implement exportfs operations. The generation is 32-bit, so it's possible the generation wraps up and we find stale files. To reduce the posssibility, we don't reuse inode numer immediately. When the inode number allocation wraps, we increase generation number. In this way generation/inode number consist of a 64-bit number which is unlikely duplicated. This does make the idr tree more sparse and waste some memory. Since idr manages 32-bit keys, idr uses a 6-level radix tree, each level covers 6 bits of the key. In a 100k inode kernfs, the worst case will have around 300k radix tree node. Each node is 576bytes, so the tree will use about ~150M memory. Sounds not too bad, if this really is a problem, we should find better data structure. Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-29kernfs: use idr instead of ida to manage inode numberShaohua Li
kernfs uses ida to manage inode number. The problem is we can't get kernfs_node from inode number with ida. Switching to use idr, next patch will add an API to get kernfs_node from inode number. Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-28Merge tag 'devicetree-fixes-for-4.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree fixes from Rob Herring: "Two small DT fixes: - Fix error handling in of_irq_to_resource_table() due to of_irq_to_resource() error return changes. - Fix dtx_diff script due to dts include path changes" * tag 'devicetree-fixes-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: irq: fix of_irq_to_resource() error check scripts/dtc: dtx_diff - update include dts paths to match build
2017-07-28Merge tag 'nfs-for-4.13-3' of git://git.linux-nfs.org/projects/anna/linux-nfsLinus Torvalds
Pull NFS client fixes from Anna Schumaker: "More NFS client bugfixes for 4.13. Most of these fix locking bugs that Ben and Neil noticed, but I also have a patch to fix one more access bug that was reported after last week. Stable fixes: - Fix a race where CB_NOTIFY_LOCK fails to wake a waiter - Invalidate file size when taking a lock to prevent corruption Other fixes: - Don't excessively generate tiny writes with fallocate - Use the raw NFS access mask in nfs4_opendata_access()" * tag 'nfs-for-4.13-3' of git://git.linux-nfs.org/projects/anna/linux-nfs: NFSv4.1: Fix a race where CB_NOTIFY_LOCK fails to wake a waiter NFS: Optimize fallocate by refreshing mapping when needed. NFS: invalidate file size when taking a lock. NFS: Use raw NFS access mask in nfs4_opendata_access()
2017-07-28Merge tag 'xfs-4.13-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds
Pull xfs fixes from Darrick Wong: - fix firstfsb variables that we left uninitialized, which could lead to locking problems. - check for NULL metadata buffer pointers before using them. - don't allow btree cursor manipulation if the btree block is corrupt. Better to just shut down. - fix infinite loop problems in quotacheck. - fix buffer overrun when validating directory blocks. - fix deadlock problem in bunmapi. * tag 'xfs-4.13-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: fix multi-AG deadlock in xfs_bunmapi xfs: check that dir block entries don't off the end of the buffer xfs: fix quotacheck dquot id overflow infinite loop xfs: check _alloc_read_agf buffer pointer before using xfs: set firstfsb to NULLFSBLOCK before feeding it to _bmapi_write xfs: check _btree_check_block value
2017-07-28Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Paolo Bonzini: "s390: - SRCU fix PPC: - host crash fixes x86: - bugfixes, including making nested posted interrupts really work Generic: - tweaks to kvm_stat and to uevents" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: LAPIC: Fix reentrancy issues with preempt notifiers tools/kvm_stat: add '-f help' to get the available event list tools/kvm_stat: use variables instead of hard paths in help output KVM: nVMX: Fix loss of L2's NMI blocking state KVM: nVMX: Fix posted intr delivery when vcpu is in guest mode x86: irq: Define a global vector for nested posted interrupts KVM: x86: do mask out upper bits of PAE CR3 KVM: make pid available for uevents without debugfs KVM: s390: take srcu lock when getting/setting storage keys KVM: VMX: remove unused field KVM: PPC: Book3S HV: Fix host crash on changing HPT size KVM: PPC: Book3S HV: Enable TM before accessing TM registers
2017-07-28Merge tag 'for-linus-4.13b-rc3-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fixes from Juergen Gross: "Three minor cleanups for xen related drivers" * tag 'for-linus-4.13b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: dont fiddle with event channel masking in suspend/resume xen: selfballoon: remove unnecessary static in frontswap_selfshrink() xen: Drop un-informative message during boot
2017-07-28Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "I'd been collecting these whilst we debugged a CPU hotplug failure, but we ended up diagnosing that one to tglx, who has taken a fix via the -tip tree separately. We're seeing some NFS issues that we haven't gotten to the bottom of yet, and we've uncovered some issues with our backtracing too so there might be another fixes pull before we're done. Summary: - Ensure we have a guard page after the kernel image in vmalloc - Fix incorrect prefetch stride in copy_page - Ensure irqs are disabled in die() - Fix for event group validation in QCOM L2 PMU driver - Fix requesting of PMU IRQs on AMD Seattle - Minor cleanups and fixes" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mmu: Place guard page after mapping of kernel image drivers/perf: arm_pmu: Request PMU SPIs with IRQF_PER_CPU arm64: sysreg: Fix unprotected macro argmuent in write_sysreg perf: qcom_l2: fix column exclusion check arm64/lib: copy_page: use consistent prefetch stride arm64/numa: Drop duplicate message perf: Convert to using %pOF instead of full_name arm64: Convert to using %pOF instead of full_name arm64: traps: disable irq in die() arm64: atomics: Remove '&' from '+&' asm constraint in lse atomics arm64: uaccess: Remove redundant __force from addr cast in __range_ok
2017-07-28Merge tag 'powerpc-4.13-4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "The highlight is Ben's patch to work around a host killing bug when running KVM guests with the Radix MMU on Power9. See the long change log of that commit for more detail. And then three fairly minor fixes: - fix of_node_put() underflow during reconfig remove, using old DLPAR tools. - fix recently introduced ld version check with 64-bit LE-only toolchain. - free the subpage_prot_table correctly, avoiding a memory leak. Thanks to: Aneesh Kumar K.V, Benjamin Herrenschmidt, Laurent Vivier" * tag 'powerpc-4.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/mm/hash: Free the subpage_prot_table correctly powerpc/Makefile: Fix ld version check with 64-bit LE-only toolchain powerpc/pseries: Fix of_node_put() underflow during reconfig remove powerpc/mm/radix: Workaround prefetch issue with KVM
2017-07-28NFSv4.1: Fix a race where CB_NOTIFY_LOCK fails to wake a waiterBenjamin Coddington
nfs4_retry_setlk() sets the task's state to TASK_INTERRUPTIBLE within the same region protected by the wait_queue's lock after checking for a notification from CB_NOTIFY_LOCK callback. However, after releasing that lock, a wakeup for that task may race in before the call to freezable_schedule_timeout_interruptible() and set TASK_WAKING, then freezable_schedule_timeout_interruptible() will set the state back to TASK_INTERRUPTIBLE before the task will sleep. The result is that the task will sleep for the entire duration of the timeout. Since we've already set TASK_INTERRUPTIBLE in the locked section, just use freezable_schedule_timout() instead. Fixes: a1d617d8f134 ("nfs: allow blocking locks to be awoken by lock callbacks") Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Cc: stable@vger.kernel.org # v4.9+ Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-07-28Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fixes from Herbert Xu: - remove broken dt bindings in inside-secure - fix authencesn crash when used with digest_null - fix cavium/nitrox firmware path - fix SHA3 failure in brcm - fix Kconfig dependency for brcm * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: authencesn - Fix digest_null crash crypto: brcm - remove BCM_PDC_MBOX dependency in Kconfig Documentation/bindings: crypto: remove the dma-mask property crypto: inside-secure - do not parse the dma mask from dt crypto: cavium/nitrox - Change in firmware path. crypto: brcm - Fix SHA3-512 algorithm failure
2017-07-28Merge branch 'for-4.13-part3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fixes from David Sterba: "Fixes addressing problems reported by users, and there's one more regression fix" * 'for-4.13-part3' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: round down size diff when shrinking/growing device Btrfs: fix early ENOSPC due to delalloc btrfs: fix lockup in find_free_extent with read-only block groups Btrfs: fix dir item validation when replaying xattr deletes
2017-07-28Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/mdLinus Torvalds
Pull MD fixes from Shaohua Li: "This fixes several bugs, three of them are marked for stable: - an initialization issue fixed by Ming - a bio clone race issue fixed by me - an async tx flush issue fixed by Ofer - other cleanups" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: MD: fix warnning for UP case md/raid5: add thread_group worker async_tx_issue_pending_all md: simplify code with bio_io_error md/raid1: fix writebehind bio clone md: raid1-10: move raid1/raid10 common code into raid1-10.c md: raid1/raid10: initialize bvec table via bio_add_page() md: remove 'idx' from 'struct resync_pages'
2017-07-28Merge tag 'for-4.13/dm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: - a few DM integrity fixes that improve performance. One that address inefficiencies in the on-disk journal device layout. Another that makes use of the block layer's on-stack plugging when writing the journal. - a dm-bufio fix for the blk_status_t conversion that went in during the merge window. - a few DM raid fixes that address correctness when suspending the device and a validation fix for validation that occurs during device activation. - a couple DM zoned target fixes. Important one being the fix to not use GFP_KERNEL in the IO path due to concerns about deadlock in low-memory conditions (e.g. swap over a DM zoned device, etc). - a DM DAX device fix to make sure dm_dax_flush() is called if the underlying DAX device is operating as a write cache. * tag 'for-4.13/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm, dax: Make sure dm_dax_flush() is called if device supports it dm verity fec: fix GFP flags used with mempool_alloc() dm zoned: use GFP_NOIO in I/O path dm zoned: remove test for impossible REQ_OP_FLUSH conditions dm raid: bump target version dm raid: avoid mddev->suspended access dm raid: fix activation check in validate_raid_redundancy() dm raid: remove WARN_ON() in raid10_md_layout_to_format() dm bufio: fix error code in dm_bufio_write_dirty_buffers() dm integrity: test for corrupted disk format during table load dm integrity: WARN_ON if variables representing journal usage get out of sync dm integrity: use plugging when writing the journal dm integrity: fix inefficient allocation of journal space
2017-07-28Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fixes from Jens Axboe: "A small collection of fixes that should go into this series. This contains: - NVMe pull request from Christoph, with various fixes for nvme proper and nvme-fc. - disable runtime PM for blk-mq for now. With scsi now defaulting to using blk-mq, this reared its head as an issue. Longer term we'll fix up runtime PM for blk-mq, for now just disable it to prevent a hang on laptop resume for some folks. - blk-mq CPU <-> hw queue map fix from Christoph. - xen/blkfront pull request from Konrad, with two small fixes for the blkfront driver. - a few fixups for nbd from Joseph. - a stable fix for pblk from Javier" * 'for-linus' of git://git.kernel.dk/linux-block: lightnvm: pblk: advance bio according to lba index nvme: validate admin queue before unquiesce nbd: clear disconnected on reconnect nvme-pci: fix HMB size calculation nvme-fc: revise TRADDR parsing nvme-fc: address target disconnect race conditions in fcp io submit nvme: fabrics commands should use the fctype field for data direction nvme: also provide a UUID in the WWID sysfs attribute xen/blkfront: always allocate grants first from per-queue persistent grants xen-blkfront: fix mq start/stop race blk-mq: map queues to all present CPUs block: disable runtime-pm for blk-mq xen-blkfront: Fix handling of non-supported operations nbd: only set sndtimeo if we have a timeout set nbd: take tx_lock before disconnecting nbd: allow multiple disconnects to be sent
2017-07-28Merge tag 'mmc-v4.13-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc Pull MMC fixes from Ulf Hansson: "Here are a couple of mmc fixes intended for v4.13-rc1. I have also included a couple of cleanup patches in this pull request for OMAP2+, related to the omap_hsmmc driver. The reason is because of the changes are also depending on OMAP SoC specific code, so this simplifies how to deal with this. Summary: MMC host: - sunxi: Correct time phase settings - omap_hsmmc: Clean up some dead code - dw_mmc: Fix message printed for deprecated num-slots DT binding - dw_mmc: Fix DT documentation" * tag 'mmc-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: Documentation: dw-mshc: deprecate num-slots mmc: dw_mmc: fix the wrong condition check of getting num-slots from DT mmc: host: omap_hsmmc: remove unused platform callbacks ARM: OMAP2+: hsmmc.c: Remove dead code mmc: sunxi: Keep default timing phase settings for new timing mode
2017-07-28lightnvm: pblk: advance bio according to lba indexJavier González
When a lba either hits the cache or corresponds to an empty entry in the L2P table, we need to advance the bio according to the position in which the lba is located. Otherwise, we will copy data in the wrong page, thus causing data corruption for the application. In case of a cache hit, we assumed that bio->bi_iter.bi_idx would contain the correct index, but this is no necessarily true. Instead, use the local bio advance counter and iterator. This guarantees that lbas hitting the cache are copied into the right bv_page. In case of an empty L2P entry, we omitted to advance the bio. In the cases when the same I/O also contains a cache hit, data corresponding to this lba will be copied to the wrong bv_page. Fix this by advancing the bio as we do in the case of a cache hit. Fixes: a4bd217b4326 lightnvm: physical block device (pblk) target Signed-off-by: Javier González <javier@javigon.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-07-28arm64: mmu: Place guard page after mapping of kernel imageWill Deacon
The vast majority of virtual allocations in the vmalloc region are followed by a guard page, which can help to avoid overruning on vma into another, which may map a read-sensitive device. This patch adds a guard page to the end of the kernel image mapping (i.e. following the data/bss segments). Cc: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-07-27Merge tag 'drm-fixes-for-v4.13-rc3' of ↵Linus Torvalds
git://people.freedesktop.org/~airlied/linux Pull drm fixes from Dave Airlie: "These iare the fixes for 4.13-rc3: vmwgfx, exynos, i915, amdgpu, nouveau, host1x and displayport fixes. As expected people woke up this week, i915 didn't do an -rc2 pull so got a bumper -rc3 pull, and Ben resurfaced on nouveau and fixed a bunch of major crashers seen on Fedora 26, and there are a few vmwgfx fixes as well. Otherwise exynos had some regression fixes/cleanups, and amdgpu has an rcu locking regression fix and a couple of minor fixes" * tag 'drm-fixes-for-v4.13-rc3' of git://people.freedesktop.org/~airlied/linux: (44 commits) drm/i915: Fix bad comparison in skl_compute_plane_wm. drm/i915: Force CPU synchronisation even if userspace requests ASYNC drm/i915: Only skip updating execobject.offset after error drm/i915: Only mark the execobject as pinned on success drm/i915: Remove assertion from raw __i915_vma_unpin() drm/i915/cnl: Fix loadgen select programming on ddi vswing sequence drm/i915: Fix scaler init during CRTC HW state readout drm/i915/selftests: Fix an error handling path in 'mock_gem_device()' drm/i915: Unbreak gpu reset vs. modeset locking gpu: host1x: Free the IOMMU domain when there is no device to attach drm/i915: Fix cursor updates on some platforms drm/i915: Fix user ptr check size in eb_relocate_vma() drm: exynos: mark pm functions as __maybe_unused drm/exynos: select CEC_CORE if CEC_NOTIFIER drm/exynos/hdmi: fix disable sequence drm/exynos: mic: add a bridge at probe drm/exynos/dsi: Remove error handling for bridge_node DT parsing drm/exynos: dsi: do not try to find bridge drm: exynos: hdmi: make of_device_ids const. drm: exynos: constify mixer_match_types and *_mxr_drv_data. ...
2017-07-28Merge tag 'exynos-drm-fixes-for-v4.13-rc3' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes Summary: - fix probing fail issue of dsi driver without bridge device. - fix disable sequence of hdmi driver. - trivial cleanups. * tag 'exynos-drm-fixes-for-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: drm: exynos: mark pm functions as __maybe_unused drm/exynos: select CEC_CORE if CEC_NOTIFIER drm/exynos/hdmi: fix disable sequence drm/exynos: mic: add a bridge at probe drm/exynos/dsi: Remove error handling for bridge_node DT parsing drm/exynos: dsi: do not try to find bridge drm: exynos: hdmi: make of_device_ids const. drm: exynos: constify mixer_match_types and *_mxr_drv_data. exynos_drm: Clean up duplicated assignment in exynos_drm_driver
2017-07-28Merge tag 'drm-intel-fixes-2017-07-27' of ↵Dave Airlie
git://anongit.freedesktop.org/git/drm-intel into drm-fixes i915 fixes for -rc3 Bit more than usual since we missed -rc2. 4x cc: stable, 2 gvt patches, but all fairly minor stuff. Last minute rebase was to add a few missing cc: stable, I did prep the pull this morning already and made sure CI approves. * tag 'drm-intel-fixes-2017-07-27' of git://anongit.freedesktop.org/git/drm-intel: drm/i915: Fix bad comparison in skl_compute_plane_wm. drm/i915: Force CPU synchronisation even if userspace requests ASYNC drm/i915: Only skip updating execobject.offset after error drm/i915: Only mark the execobject as pinned on success drm/i915: Remove assertion from raw __i915_vma_unpin() drm/i915/cnl: Fix loadgen select programming on ddi vswing sequence drm/i915: Fix scaler init during CRTC HW state readout drm/i915/selftests: Fix an error handling path in 'mock_gem_device()' drm/i915: Unbreak gpu reset vs. modeset locking drm/i915: Fix cursor updates on some platforms drm/i915: Fix user ptr check size in eb_relocate_vma() drm/i915/gvt: Extend KBL platform support in GVT-g drm/i915/gvt: Fix the vblank timer close issue after shutdown VMs in reverse
2017-07-28Merge tag 'drm-misc-fixes-2017-07-27' of ↵Dave Airlie
git://anongit.freedesktop.org/git/drm-misc into drm-fixes Core Changes: - dp: A few fixes in drm_dp_downstream_debug() (Chris) - rockchip: sanitize the Kconfig dependencies (fallout from EXTCON) (Arnd) - host1x: Free the iommu domain when attach_device fails (Paul) Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Paul Kocialkowski <contact@paulk.fr> * tag 'drm-misc-fixes-2017-07-27' of git://anongit.freedesktop.org/git/drm-misc: gpu: host1x: Free the IOMMU domain when there is no device to attach drm/rockchip: fix Kconfig dependencies drm/dp: Don't trust drm_dp_downstream_id() drm/dp: Fix read pointer for drm_dp_downsteam_debug()
2017-07-27Merge tag 'acpi-4.13-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI fixes from Rafael Wysocki: "These are two fixups for the suspend-to-idle handling in the ACPI subsystem after recent changes in that area and two simple fixes of the ACPI NUMA code. Specifics: - Add an ACPI module parameter to allow users to override the new default behavior on some systems where the EC GPE is not disabled during suspend-to-idle in case the EC on their systems generates excessive wakeup events and they want to sacrifice some functionality (like power button wakeups) for extra battery life while suspended (Rafael Wysocki). - Fix flushing of the outstanding EC work in the ACPI core suspend-to-idle code (Rafael Wysocki). - Add a missing include and fix a messed-up comment in the ACPI NUMA code (Ross Zwisler)" * tag 'acpi-4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: NUMA: Fix typo in the full name of SRAT ACPI: NUMA: add missing include in acpi_numa.h ACPI / PM / EC: Flush all EC work in acpi_freeze_sync() ACPI / EC: Add parameter to force disable the GPE on suspend
2017-07-27Merge branches 'acpi-pm' and 'acpi-numa'Rafael J. Wysocki
* acpi-pm: ACPI / PM / EC: Flush all EC work in acpi_freeze_sync() ACPI / EC: Add parameter to force disable the GPE on suspend * acpi-numa: ACPI: NUMA: Fix typo in the full name of SRAT ACPI: NUMA: add missing include in acpi_numa.h
2017-07-27Merge tag 'gvt-fixes-2017-07-26' of https://github.com/01org/gvt-linux into ↵Daniel Vetter
drm-intel-fixes gvt-fixes-2017-07-26 - Turn on KBL support for more SKUs (Jianjun) - Fix vblank timer close bug (Fred) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20170726075621.hrauvik62gi2jecj@zhen-hp.sh.intel.com
2017-07-27drm/i915: Fix bad comparison in skl_compute_plane_wm.Maarten Lankhorst
ddb_allocation && ddb_allocation / blocks_per_line >= 1 is the same as ddb_allocation >= blocks_per_line, so use the latter to simplify this. This fixes the following compiler warning: drivers/gpu/drm/i915/intel_pm.c:4467]: (warning) Comparison of a boolean expression with an integer other than 0 or 1. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Fixes: d555cb5827d6 ("drm/i915/skl+: use linetime latency if ddb size is not available") Cc: "Mahesh Kumar" <mahesh1.kumar@intel.com> Reported-by: David Binderman <dcb314@hotmail.com> Cc: David Binderman <dcb314@hotmail.com> Cc: <drm-intel-fixes@lists.freedesktop.org> # v4.13-rc1+ Reviewed-by: Mahesh Kumar <mahesh1.kumar@intel.com> (cherry picked from commit 54d20ed1fff23c7d2633f01fc788111bf9c51c5d) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170717111355.4523-1-maarten.lankhorst@linux.intel.com Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2017-07-27drm/i915: Force CPU synchronisation even if userspace requests ASYNCChris Wilson
The goal here was to minimise doing any thing or any check inside the kernel that was not strictly required. For a userspace that assumes complete control over the cache domains, the kernel is usually using outdated information and may trigger clflushes where none were required. However, swapping is a situation where userspace has no knowledge of the domain transfer, and will leave the object in the CPU cache. The kernel must flush this out to the backing storage prior to use with the GPU. As we use an asynchronous task tracked by an implicit fence for this, we also need to cancel the ASYNC flag on the object so that the object will wait for the clflush to complete before being executed. This also absolves userspace of the responsibility imposed by commit 77ae9957897d ("drm/i915: Enable userspace to opt-out of implicit fencing") that its needed to ensure that the object was out of the CPU cache prior to use on the GPU. Fixes: 77ae9957897d ("drm/i915: Enable userspace to opt-out of implicit fencing") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101571 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Link: https://patchwork.freedesktop.org/patch/msgid/20170721145037.25105-5-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (cherry picked from commit 0f46daa1a273779a0b73d768a788ca3f04238f9c) Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27drm/i915: Only skip updating execobject.offset after errorChris Wilson
I was being overly paranoid in not updating the execobject.offset after performing the fallback copy where we set reloc.presumed_offset to -1. The thinking was to ensure that a subsequent NORELOC execbuf would be forced to process the invalid relocations. However this is overkill so long as we *only* update the execobject.offset following a successful update of the relocation value witin the batch. If we have to repeat the execbuf due to a later interruption, then we may skip the relocations on the second pass (honouring NORELOC) since the execobject.offset match the actual offsets (even though reloc.presumed_offset is garbage). Subsequent calls to execbuf with NORELOC should themselves ensure that the reloc.presumed_offset have been corrected in case of future migration. Reporting back the actual execobject.offset, even when reloc.presumed_offset is garbage, ensures that reuse of those objects use the latest information to avoid relocations. Fixes: 2889caa92321 ("drm/i915: Eliminate lots of iterations over the execobjects array") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101635 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170721145037.25105-4-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (cherry picked from commit 1f727d9e725a408ef58d159c20fb2e51818ff153) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27drm/i915: Only mark the execobject as pinned on successChris Wilson
If we fail to acquire a fence (for old school fenced GPU access) then we unwind the vma reservation, including its pin. However, we were making the execobject as holding the pin before erring out, leading to a double unpin: [ 3193.991802] kernel BUG at drivers/gpu/drm/i915/i915_vma.h:287! [ 3193.998131] invalid opcode: 0000 [#1] PREEMPT SMP [ 3194.002816] Modules linked in: snd_hda_intel i915 vgem snd_hda_codec_analog snd_hda_codec_generic coretemp snd_hda_codec snd_hwdep snd_hda_core snd_pcm lpc_ich mei_me e1000e mei prime_numbers ptp pps_core [last unloaded: i915] [ 3194.022841] CPU: 0 PID: 8123 Comm: kms_flip Tainted: G U 4.13.0-rc1-CI-CI_DRM_471+ #1 [ 3194.031765] Hardware name: Dell Inc. OptiPlex 755 /0PU052, BIOS A04 11/05/2007 [ 3194.040343] task: ffff8800785d4c40 task.stack: ffffc90001768000 [ 3194.046339] RIP: 0010:eb_release_vmas.isra.6+0x119/0x180 [i915] [ 3194.052234] RSP: 0018:ffffc9000176ba80 EFLAGS: 00010246 [ 3194.057439] RAX: 00000000000003c0 RBX: ffff8800710fc2d8 RCX: ffff8800588e4f48 [ 3194.064546] RDX: ffffffff1fffffff RSI: 00000000ffffffff RDI: ffff8800588e00d0 [ 3194.071654] RBP: ffffc9000176bab0 R08: 0000000000000000 R09: 0000000000000000 [ 3194.078761] R10: 0000000000000040 R11: 0000000000000001 R12: ffff880060822f00 [ 3194.085867] R13: 0000000000000310 R14: 00000000000003b8 R15: ffffc9000176bbb0 [ 3194.092975] FS: 00007fd2b94aba40(0000) GS:ffff88007d200000(0000) knlGS:0000000000000000 [ 3194.101033] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3194.106754] CR2: 00007ffbec3ff000 CR3: 0000000074e67000 CR4: 00000000000006f0 [ 3194.113861] Call Trace: [ 3194.116321] eb_relocate_slow+0x67/0x4e0 [i915] [ 3194.120861] i915_gem_do_execbuffer+0x429/0x1260 [i915] [ 3194.126070] ? lock_acquire+0xb5/0x210 [ 3194.129803] ? __might_fault+0x39/0x90 [ 3194.133563] i915_gem_execbuffer2+0x9b/0x1b0 [i915] [ 3194.138447] ? i915_gem_execbuffer+0x2b0/0x2b0 [i915] [ 3194.143478] drm_ioctl_kernel+0x64/0xb0 [ 3194.147298] drm_ioctl+0x2cd/0x390 [ 3194.150710] ? i915_gem_execbuffer+0x2b0/0x2b0 [i915] [ 3194.155741] ? finish_task_switch+0xa5/0x210 [ 3194.159993] ? finish_task_switch+0x6a/0x210 [ 3194.164247] do_vfs_ioctl+0x90/0x670 [ 3194.167806] ? entry_SYSCALL_64_fastpath+0x5/0xb1 [ 3194.172492] ? __this_cpu_preempt_check+0x13/0x20 [ 3194.177176] ? trace_hardirqs_on_caller+0xe7/0x1c0 [ 3194.181946] SyS_ioctl+0x3c/0x70 [ 3194.185159] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 3194.189756] RIP: 0033:0x7fd2b76a8587 [ 3194.193314] RSP: 002b:00007fff074845b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 3194.200855] RAX: ffffffffffffffda RBX: ffffffff8146da43 RCX: 00007fd2b76a8587 [ 3194.207962] RDX: 00007fff074846e0 RSI: 0000000040406469 RDI: 0000000000000003 [ 3194.215068] RBP: ffffc9000176bf88 R08: 0000000000000000 R09: 0000000000000003 [ 3194.222175] R10: 00007fd2b796bb58 R11: 0000000000000246 R12: 00007fff07484880 [ 3194.229280] R13: 0000000000000003 R14: 0000000040406469 R15: 0000000000000000 [ 3194.236386] ? __this_cpu_preempt_check+0x13/0x20 [ 3194.241070] Code: 24 b0 00 00 00 48 85 c9 0f 84 6c ff ff ff 8b 41 20 85 c0 7e 73 83 e8 01 89 41 20 41 8b 84 24 e8 00 00 00 a8 0f 0f 85 5f ff ff ff <0f> 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d f3 c3 49 8b 84 [ 3194.259943] RIP: eb_release_vmas.isra.6+0x119/0x180 [i915] RSP: ffffc9000176ba80 [ 3194.268047] ---[ end trace 1d7348c6575d8800 ]--- [ 3673.658819] softdog: Initiating panic [ 3673.662471] Kernel panic - not syncing: Software Watchdog Timer expired [ 3673.669066] Kernel Offset: disabled [ 3673.672541] Rebooting in 1 seconds.. Reported-by: Tomi Sarvela <tomi.p.sarvela@intel.com> Fixes: 2889caa92321 ("drm/i915: Eliminate lots of iterations over the execobjects array") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170721145037.25105-3-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (cherry picked from commit 1da7b54c46bcfe5484af0b27d8c9003b238031b0) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27drm/i915: Remove assertion from raw __i915_vma_unpin()Chris Wilson
After we detect a i915_vma pin overflow, we call __i915_vma_unpin to cleanup. However, on an overflow the pin_count bitfield will be zero, triggering an assertion, even though we the intention is to merely warn and report the error back to the user (as historically the culprit has be a leak in the display code). Fixes: 20dfbde463c8 ("drm/i915: Wrap vma->pin_count accessors with small inline helpers") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170721145037.25105-2-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (cherry picked from commit 67fddd902b8e37b15a905c287ce4e40f52a564af) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27drm/i915/cnl: Fix loadgen select programming on ddi vswing sequenceNavare, Manasi D
The condition for setting the Loadgen Select bit of PORT_TX_DW4 register during DDI Vswing Sequence should be Bit rate <=6 GHz whereas the existing code checks only Bit Rate < 6GHz. This patch fixes this condition. While at it also remove the redundant paranthesis. Fixes: cf54ca8bc567 ("drm/i915/cnl: Implement voltage swing sequence.") Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1500329122-32662-1-git-send-email-manasi.d.navare@intel.com Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (cherry picked from commit a8e45a1c42d11597e975f3e5f2fe182f90cdaa7f) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27drm/i915: Fix scaler init during CRTC HW state readoutImre Deak
The scaler allocation code depends on a non-zero default value for the crtc scaler_id, so make sure we initialize the scaler state accordingly even if the crtc is off. This fixes at least an initial YUV420 modeset (added in a follow-up patchset by Shashank) when booting with the screen off: after the initial HW readout and modeset which enables the scaler a subsequent modeset will disable the scaler which isn't properly allocated. This results in a funky HW state where the pipe scaler HW registers can't be modified and the normally black screen is grey and shifted to the right or jitters. The problem was revealed by Shashank's YUV420 patchset and first reported by Ville. v2: - In the stable tag also include versions which need backporting (Jani) Cc: Jani Nikula <jani.nikula@intel.com> Cc: Shashank Sharma <shashank.sharma@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chandra Konduru <chandra.konduru@intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Cc: <stable@vger.kernel.org> # 4.2.x Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Fixes: a1b2278e4dfc ("drm/i915: skylake panel fitting using shared scalers") Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Mahesh Kumar <mahesh1.kumar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170720112820.26816-1-imre.deak@intel.com Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> (cherry picked from commit 5fb9dadf336f3590c799e8cbde348215dccc2aa2) Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27drm/i915/selftests: Fix an error handling path in 'mock_gem_device()'Christophe JAILLET
Goto the right label in case of error, otherwise there is a leak. This has been introduced by c5cf9a9147ff. In this patch a goto has not been updated. Fixes: c5cf9a9147ff ("drm/i915: Create a kmem_cache to allocate struct i915_priolist from") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://patchwork.freedesktop.org/patch/msgid/20170719223503.30580-1-christophe.jaillet@wanadoo.fr Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (cherry picked from commit a5ec7fe81a6ec38cb8b8a798d0552cbcadce7aa9) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27drm/i915: Unbreak gpu reset vs. modeset lockingDaniel Vetter
Taking the modeset locks unconditionally isn't the greatest idea, because atm that part is still broken and times out (and then atomic keels over). And there's really no reason to do so, the old code didn't do that either. To make the patch a bit simpler let's also nuke 2 cases that are only around for the old mmioflip paths. Atomic nonblocking workers will not die (minus bugs) when a gpu reset happens. And of course this doesn't fix any of the gpu reset vs. modeset deadlock fun, but it at least stop modern CI machines from keeling over all over the place for no reason at all. And we still have the explicit testcases to run the fake gpu reset, so coverage isn't that much worse. v2: Split out additional changes on top, restrict this to purely reducing the critical section of modeset locks. v2: Review from Maarten - update comments - don't oops when state is NULL in intel_finish_reset, but try to at least still drop locks properly. The hw is going to be toast anyway. Fixes: 739748939974 ("drm/i915: Fix modeset handling during gpu reset, v5.") Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170719125502.25696-3-daniel.vetter@ffwll.ch (cherry picked from commit ce87ea15ebc60a9f8f156b2549f7b2cf7fe48d04) Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27Merge branch 'parisc-4.13-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc fixes from Helge Deller: - The majority of lines changed are due to regenerated defconfig files. - The support for the Page Deallocation Table (PDT) which was merged in the merge window for 4.13 contained a bug which crashes the kernel if a bad page is reported by firmware. This is now fixed and the kernel messages will show which memory slot holds the broken DIMM. - Commit 3a166fc2d4ef ("kbuild: handle libs-y archives separately from built-in.o archives") broke linking the parisc kernel due to millicode symbols which can't be reached then any longer. This was fixed by modifying the parisc vmlinux.lds linker script. - If the stack checker panics on stack overflow, avoid recursive panics. - Some parisc machines can't physically power off and thus instead start after some time to flood the console by presumably detected soft lockups. Avoid this by disabling the lockup detectors before entering the endless for-next loop. - Dave Anglin provided fixes which prevents TLB speculation on flushed pages on PA8800/PA9000 CPUs. - Arvind Yadav sent a trivial patch to constify the attribute_group structure in our firmware on-board-flash storage driver (pdc_stable.c) * 'parisc-4.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Extend disabled preemption in copy_user_page parisc: Prevent TLB speculation on flushed pages on CPUs that only support equivalent aliases parisc: Suspend lockup detectors before system halt parisc: Show DIMM slot number which holds broken memory module parisc: Add function to return DIMM slot of physical address parisc: Fix crash when calling PDC_PAT_MEM PDT firmware function parisc: regenerate defconfig files parisc: pdc_stable: constify attribute_group structures. parisc: Merge millicode routines via linker script parisc: Disable further stack checks when panic occurs during stack check
2017-07-27xen: dont fiddle with event channel masking in suspend/resumeJuergen Gross
Instead of fiddling with masking the event channels during suspend and resume handling let do the irq subsystem do its job. It will do the mask and unmask operations as needed. Signed-off-by: Juergen Gross <jgross@suse.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com>
2017-07-27xen: selfballoon: remove unnecessary static in frontswap_selfshrink()Gustavo A. R. Silva
Remove unnecessary static on local variables last_frontswap_pages and tgt_frontswap_pages. Such variables are initialized before being used, on every execution path throughout the function. The statics have no benefit and, removing them reduce the code size. This issue was detected using Coccinelle and the following semantic patch: @bad exists@ position p; identifier x; type T; @@ static T x@p; ... x = <+...x...+> @@ identifier x; expression e; type T; position p != bad.p; @@ -static T x@p; ... when != x when strict ?x = e; You can see a significant difference in the code size after executing the size command, before and after the code change: before: text data bss dec hex filename 5633 3452 384 9469 24fd drivers/xen/xen-selfballoon.o after: text data bss dec hex filename 5576 3308 256 9140 23b4 drivers/xen/xen-selfballoon.o Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com>
2017-07-27xen: Drop un-informative message during bootPunit Agrawal
On systems that are not booted as a Xen domain, the xenfs driver prints the following message during boot. [ 3.460595] xenfs: not registering filesystem on non-xen platform As the user chose not to boot a Xen domain, this message does not provide useful information. Drop this message. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com>
2017-07-27Merge tag 'sound-4.13-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "This is a pretty boring pull request, containing a few HD-audio quirks and ID updates as usual suspects, as well as a fix for a regression of FM801 chip on ia64 (what a legacy combination!)" * tag 'sound-4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Add mute led support for HP ProBook 440 G4 ALSA: hda/realtek - No loopback on ALC225/ALC295 codec ALSA: hda/realtek - Update headset mode for ALC225 ALSA: fm801: Initialize chip after IRQ handler is registered ALSA: hda/realtek - Update headset mode for ALC298 ALSA: hda - Add missing NVIDIA GPU codec IDs to patch table
2017-07-27Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds
Pull ARM fixes from Russell King: "Two areas addressed by these fixes: - Fixes from Dave Martin for the signal frames that were broken with certain configurations. No one noticed until recently. - More kexec fixes to ensure that the crashkernel region is correctly allocated, and a fix for the location of the device tree when several kexec kernels are loaded" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8687/1: signal: Fix unparseable iwmmxt_sigframe in uc_regspace[] ARM: 8686/1: iwmmxt: Add missing __user annotations to sigframe accessors ARM: kexec: fix failure to boot crash kernel ARM: kexec: avoid allocating crashkernel region outside lowmem