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2018-05-18gpu: host1x: Remove wait check supportThierry Reding9-234/+14
The job submission userspace ABI doesn't support this and there are no plans to implement it, so all of this code is dead and can be removed. Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Tested-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-18gpu: host1x: Fix compiler errors by converting to dma_addr_tEmil Goode2-2/+2
The compiler is complaining with the following errors: drivers/gpu/host1x/cdma.c:94:48: error: passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type [-Werror=incompatible-pointer-types] drivers/gpu/host1x/cdma.c:113:48: error: passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type [-Werror=incompatible-pointer-types] The expected pointer type of the third argument to dma_alloc_wc() is dma_addr_t but phys_addr_t is passed. Change the phys member of struct push_buffer to be dma_addr_t so that we pass the correct type to dma_alloc_wc(). Also check pb->mapped for non-NULL in the destroy function as that is the right way of checking if dma_alloc_wc() was successful. Signed-off-by: Emil Goode <emil.fsw@goode.io> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: Use drm_gem_fb_destroyDaniel Stone1-16/+1
Now that our destroy function is the same as the helper, use that directly. Signed-off-by: Daniel Stone <daniels@collabora.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-tegra@vger.kernel.org Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: Move fbdev unmap special caseDaniel Stone1-6/+11
User framebuffers are created with either bo->pages or bo->vaddr set, depending on whether or not an IOMMU is present. On the other hand, the framebuffer created for fbdev emulation has a vaddr mapping made if bo->pages is set after creation. This is set up in fbdev probe. Remove the special case unmapping from the general-purpose framebuffer destroy, and move it to fbdev teardown. Signed-off-by: Daniel Stone <daniels@collabora.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-tegra@vger.kernel.org Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: tegra_fb -> drm_framebufferDaniel Stone2-25/+15
Since tegra_fb is now the same as drm_framebuffer, we can just replace the type completely. Signed-off-by: Daniel Stone <daniels@collabora.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-tegra@vger.kernel.org Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: Move GEM BOs to drm_framebufferDaniel Stone2-30/+8
Since drm_framebuffer can now store GEM objects directly, place them there rather than in our own subclass. As this makes the framebuffer create_handle function the same as the GEM framebuffer helper, we can reuse that. Signed-off-by: Daniel Stone <daniels@collabora.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-tegra@vger.kernel.org Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: Remove duplicate framebuffer num_planesDaniel Stone2-5/+2
drm_framebuffer already stores num_planes for us. Signed-off-by: Daniel Stone <daniels@collabora.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-tegra@vger.kernel.org Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: Adding new typedef vm_fault_tSouptick Joarder1-16/+2
Use new return type vm_fault_t for fault handler. For now, this is just documenting that the function returns a VM_FAULT value rather than an errno. Once all instances are converted, vm_fault_t will become a distinct type. Reference id -> 1c8f422059ae ("mm: change return type to vm_fault_t") Previously vm_insert_page() returns err which driver mapped into VM_FAULT_* type. The new function vmf_insert_page() will replace this inefficiency by returning VM_FAULT_* type. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17gpu: host1x: Acquire a reference to the IOVA cacheThierry Reding1-1/+10
The IOVA API uses a memory cache to allocate IOVA nodes from. To make sure that this cache is available, obtain a reference to it and release the reference when the cache is no longer needed. On 64-bit ARM this is hidden by the fact that the DMA mapping API gets that reference and never releases it. On 32-bit ARM, this is papered over by the Tegra DRM driver (the sole user of the host1x API requiring the cache) acquiring a reference to the IOVA cache for its own purposes. However, there may be additional users of this API in the future, so fix this upfront to avoid surprises. Fixes: 404bfb78daf3 ("gpu: host1x: Add IOMMU support") Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: Acquire a reference to the IOVA cacheThierry Reding1-1/+9
The IOVA API uses a memory cache to allocate IOVA nodes from. To make sure that this cache is available, obtain a reference to it and release the reference when the cache is no longer needed. On 64-bit ARM this is hidden by the fact that the DMA mapping API gets that reference and never releases it. On 32-bit ARM, however, the DMA mapping API doesn't do that, so allocation of IOVA nodes fails. Fixes: ad92601521ea ("drm/tegra: Add Tegra DRM allocation API") Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Tested-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: Fix order of teardown in IOMMU caseThierry Reding1-4/+4
The original code works fine, this is merely a cosmetic change to make the teardown order the reverse of the setup order. Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17gpu: host1x: Fix dma_free_wc() argument in the error pathDmitry Osipenko1-1/+1
If IOVA allocation or IOMMU mapping fails, dma_free_wc() is invoked with size=0 because of a typo, that triggers "kernel BUG at mm/vmalloc.c:124!". Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: dc: Rename supports_blending to has_legacy_blendingDmitry Osipenko2-11/+11
Older Tegra chips do support blending as well. Rename the SoC info entry .supports_blending to .has_legacy_blending to eliminate the confusion. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: plane: Implement zpos plane property for older TegrasDmitry Osipenko3-96/+244
Older Tegra's do not support plane's Z position handling in hardware, but the hardware provides knobs to implement it in software. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: dc: Enable plane scaling filtersDmitry Osipenko2-0/+88
Currently resized plane produces a "pixelated" image which doesn't look nice, especially in a case of a video overlay. Enable scaling filters that significantly improve image quality of a scaled overlay. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: Refactor IOMMU attach/detachThierry Reding5-83/+72
Attaching to and detaching from an IOMMU uses the same code sequence in every driver, so factor it out into separate helpers. Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-17drm/tegra: gr3d: Properly clean up resourcesThierry Reding1-6/+22
Failure to register the Tegra DRM client would leak the resources. Move cleanup code to error unwinding gotos to fix that and share the cleanup code with the other error paths. Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-04drm/tegra: gr2d: Properly clean up resourcesThierry Reding1-6/+22
Failure to register the Tegra DRM client would leak the resources. Move cleanup code to error unwinding gotos to fix that and share the cleanup code with the other error paths. Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-04drm/tegra: dc: Free syncpoint on errorsThierry Reding1-0/+2
If an error happens during display controller initialization, the host1x syncpoint previously requested would be leaked. Properly clean up the syncpoint along with the other resources. Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-04drm/tegra: gr3d: Add IOMMU supportDmitry Osipenko1-0/+27
Attach GR3D to the displays IOMMU group in order to provide GR3D access to BO's IOVA. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-04drm/tegra: gr2d: Add IOMMU supportDmitry Osipenko1-2/+29
Attach GR2D to the display IOMMU group in order to provide GR2D access to BO's IOVA. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-04drm/tegra: dc: Balance IOMMU group refcountingDmitry Osipenko2-17/+16
Remove unneeded iommu_group_get() and add missing iommu_group_put(), correcting IOMMU group refcount. This is a minor correction / cleanup that doesn't really fix anything because Tegra's IOMMU driver are built-in and hence groups refcounting can't hold IOMMU driver from unloading. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-05-04drm/tegra: hub: Use state directlyStefan Schake1-1/+1
Using drm_atomic_get_private_obj_state() after state has been swapped will return old state. Fixes: 0281c4149021 ("drm/tegra: hub: Use private object for global state") Signed-off-by: Stefan Schake <stschake@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2018-04-15Linux 4.17-rc1v4.17-rc1Linus Torvalds1-2/+2
2018-04-15Merge tag 'for-4.17-part2-tag' of ↵Linus Torvalds94-1234/+277
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull more btrfs updates from David Sterba: "We have queued a few more fixes (error handling, log replay, softlockup) and the rest is SPDX updates that touche almost all files so the diffstat is long" * tag 'for-4.17-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: Only check first key for committed tree blocks btrfs: add SPDX header to Kconfig btrfs: replace GPL boilerplate by SPDX -- sources btrfs: replace GPL boilerplate by SPDX -- headers Btrfs: fix loss of prealloc extents past i_size after fsync log replay Btrfs: clean up resources during umount after trans is aborted btrfs: Fix possible softlock on single core machines Btrfs: bail out on error during replay_dir_deletes Btrfs: fix NULL pointer dereference in log_dir_items
2018-04-15Merge tag '4.17-rc1SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds13-71/+240
Pull cifs fixes from Steve French: "SMB3 fixes, a few for stable, and some important cleanup work from Ronnie of the smb3 transport code" * tag '4.17-rc1SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6: cifs: change validate_buf to validate_iov cifs: remove rfc1002 hardcoded constants from cifs_discard_remaining_data() cifs: Change SMB2_open to return an iov for the error parameter cifs: add resp_buf_size to the mid_q_entry structure smb3.11: replace a 4 with server->vals->header_preamble_size cifs: replace a 4 with server->vals->header_preamble_size cifs: add pdu_size to the TCP_Server_Info structure SMB311: Improve checking of negotiate security contexts SMB3: Fix length checking of SMB3.11 negotiate request CIFS: add ONCE flag for cifs_dbg type cifs: Use ULL suffix for 64-bit constant SMB3: Log at least once if tree connect fails during reconnect cifs: smb2pdu: Fix potential NULL pointer dereference
2018-04-15Merge tag 'scsi-fixes' of ↵Linus Torvalds18-82/+109
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "This is a set of minor (and safe changes) that didn't make the initial pull request plus some bug fixes. The status handling code is actually a running regression from the previous merge window which had an incomplete fix (now reverted) and most of the remaining bug fixes are for problems older than the current merge window" [ Side note: this merge also takes the base kernel git repository to 6+ million objects for the first time. Technically we hit it a couple of merges ago already if you count all the tag objects, but now it reaches 6M+ objects reachable from HEAD. I was joking around that that's when I should switch to 5.0, because 3.0 happened at the 2M mark, and 4.0 happened at 4M objects. But probably not, even if numerology is about as good a reason as any. - Linus ] * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: devinfo: Add Microsoft iSCSI target to 1024 sector blacklist scsi: cxgb4i: silence overflow warning in t4_uld_rx_handler() scsi: dpt_i2o: Use after free in I2ORESETCMD ioctl scsi: core: Make scsi_result_to_blk_status() recognize CONDITION MET scsi: core: Rename __scsi_error_from_host_byte() into scsi_result_to_blk_status() Revert "scsi: core: return BLK_STS_OK for DID_OK in __scsi_error_from_host_byte()" scsi: aacraid: Insure command thread is not recursively stopped scsi: qla2xxx: Correct setting of SAM_STAT_CHECK_CONDITION scsi: qla2xxx: correctly shift host byte scsi: qla2xxx: Fix race condition between iocb timeout and initialisation scsi: qla2xxx: Avoid double completion of abort command scsi: qla2xxx: Fix small memory leak in qla2x00_probe_one on probe failure scsi: scsi_dh: Don't look for NULL devices handlers by name scsi: core: remove redundant assignment to shost->use_blk_mq
2018-04-15Merge tag 'kbuild-v4.17-2' of ↵Linus Torvalds41-5164/+316
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - pass HOSTLDFLAGS when compiling single .c host programs - build genksyms lexer and parser files instead of using shipped versions - rename *-asn1.[ch] to *.asn1.[ch] for suffix consistency - let the top .gitignore globally ignore artifacts generated by flex, bison, and asn1_compiler - let the top Makefile globally clean artifacts generated by flex, bison, and asn1_compiler - use safer .SECONDARY marker instead of .PRECIOUS to prevent intermediate files from being removed - support -fmacro-prefix-map option to make __FILE__ a relative path - fix # escaping to prepare for the future GNU Make release - clean up deb-pkg by using debian tools instead of handrolled source/changes generation - improve rpm-pkg portability by supporting kernel-install as a fallback of new-kernel-pkg - extend Kconfig listnewconfig target to provide more information * tag 'kbuild-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: extend output of 'listnewconfig' kbuild: rpm-pkg: use kernel-install as a fallback for new-kernel-pkg Kbuild: fix # escaping in .cmd files for future Make kbuild: deb-pkg: split generating packaging and build kbuild: use -fmacro-prefix-map to make __FILE__ a relative path kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markers kbuild: rename *-asn1.[ch] to *.asn1.[ch] kbuild: clean up *-asn1.[ch] patterns from top-level Makefile .gitignore: move *-asn1.[ch] patterns to the top-level .gitignore kbuild: add %.dtb.S and %.dtb to 'targets' automatically kbuild: add %.lex.c and %.tab.[ch] to 'targets' automatically genksyms: generate lexer and parser during build instead of shipping kbuild: clean up *.lex.c and *.tab.[ch] patterns from top-level Makefile .gitignore: move *.lex.c *.tab.[ch] patterns to the top-level .gitignore kbuild: use HOSTLDFLAGS for single .c executables
2018-04-15Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds33-802/+1150
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Thomas Gleixner: "A set of fixes and updates for x86: - Address a swiotlb regression which was caused by the recent DMA rework and made driver fail because dma_direct_supported() returned false - Fix a signedness bug in the APIC ID validation which caused invalid APIC IDs to be detected as valid thereby bloating the CPU possible space. - Fix inconsisten config dependcy/select magic for the MFD_CS5535 driver. - Fix a corruption of the physical address space bits when encryption has reduced the address space and late cpuinfo updates overwrite the reduced bit information with the original value. - Dominiks syscall rework which consolidates the architecture specific syscall functions so all syscalls can be wrapped with the same macros. This allows to switch x86/64 to struct pt_regs based syscalls. Extend the clearing of user space controlled registers in the entry patch to the lower registers" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Fix signedness bug in APIC ID validity checks x86/cpu: Prevent cpuinfo_x86::x86_phys_bits adjustment corruption x86/olpc: Fix inconsistent MFD_CS5535 configuration swiotlb: Use dma_direct_supported() for swiotlb_ops syscalls/x86: Adapt syscall_wrapper.h to the new syscall stub naming convention syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*() syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention syscalls/core, syscalls/x86: Clean up syscall stub naming convention syscalls/x86: Extend register clearing on syscall entry to lower registers syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64 syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32 syscalls/core: Prepare CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y for compat syscalls syscalls/x86: Use 'struct pt_regs' based syscall calling convention for 64-bit syscalls syscalls/core: Introduce CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y x86/syscalls: Don't pointlessly reload the system call number x86/mm: Fix documentation of module mapping range with 4-level paging x86/cpuid: Switch to 'static const' specifier
2018-04-15Merge branch 'x86-pti-for-linus' of ↵Linus Torvalds22-105/+329
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 pti updates from Thomas Gleixner: "Another series of PTI related changes: - Remove the manual stack switch for user entries from the idtentry code. This debloats entry by 5k+ bytes of text. - Use the proper types for the asm/bootparam.h defines to prevent user space compile errors. - Use PAGE_GLOBAL for !PCID systems to gain back performance - Prevent setting of huge PUD/PMD entries when the entries are not leaf entries otherwise the entries to which the PUD/PMD points to and are populated get lost" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/pgtable: Don't set huge PUD/PMD on non-leaf entries x86/pti: Leave kernel text global for !PCID x86/pti: Never implicitly clear _PAGE_GLOBAL for kernel image x86/pti: Enable global pages for shared areas x86/mm: Do not forbid _PAGE_RW before init for __ro_after_init x86/mm: Comment _PAGE_GLOBAL mystery x86/mm: Remove extra filtering in pageattr code x86/mm: Do not auto-massage page protections x86/espfix: Document use of _PAGE_GLOBAL x86/mm: Introduce "default" kernel PTE mask x86/mm: Undo double _PAGE_PSE clearing x86/mm: Factor out pageattr _PAGE_GLOBAL setting x86/entry/64: Drop idtentry's manual stack switch for user entries x86/uapi: Fix asm/bootparam.h userspace compilation errors
2018-04-15Merge branch 'sched-urgent-for-linus' of ↵Linus Torvalds7-14/+22
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Thomas Gleixner: "A few scheduler fixes: - Prevent a bogus warning vs. runqueue clock update flags in do_sched_rt_period_timer() - Simplify the helper functions which handle requests for skipping the runqueue clock updat. - Do not unlock the tunables mutex in the error path of the cpu frequency scheduler utils. Its not held. - Enforce proper alignement for 'struct util_est' in sched_avg to prevent a misalignment fault on IA64" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/core: Force proper alignment of 'struct util_est' sched/core: Simplify helpers for rq clock update skip requests sched/rt: Fix rq->clock_update_flags < RQCF_ACT_SKIP warning sched/cpufreq/schedutil: Fix error path mutex unlock
2018-04-15Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds33-187/+629
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull more perf updates from Thomas Gleixner: "A rather large set of perf updates: Kernel: - Fix various initialization issues - Prevent creating [ku]probes for not CAP_SYS_ADMIN users Tooling: - Show only failing syscalls with 'perf trace --failure' (Arnaldo Carvalho de Melo) e.g: See what 'openat' syscalls are failing: # perf trace --failure -e openat 762.323 ( 0.007 ms): VideoCapture/4566 openat(dfd: CWD, filename: /dev/video2) = -1 ENOENT No such file or directory <SNIP N /dev/videoN open attempts... sigh, where is that improvised camera lid?!? > 790.228 ( 0.008 ms): VideoCapture/4566 openat(dfd: CWD, filename: /dev/video63) = -1 ENOENT No such file or directory ^C# - Show information about the event (freq, nr_samples, total period/nr_events) in the annotate --tui and --stdio2 'perf annotate' output, similar to the first line in the 'perf report --tui', but just for the samples for a the annotated symbol (Arnaldo Carvalho de Melo) - Introduce 'perf version --build-options' to show what features were linked, aliased as well as a shorter 'perf -vv' (Jin Yao) - Add a "dso_size" sort order (Kim Phillips) - Remove redundant ')' in the tracepoint output in 'perf trace' (Changbin Du) - Synchronize x86's cpufeatures.h, no effect on toolss (Arnaldo Carvalho de Melo) - Show group details on the title line in the annotate browser and 'perf annotate --stdio2' output, so that the per-event columns can have headers (Arnaldo Carvalho de Melo) - Fixup vertical line separating metrics from instructions and cleaning unused lines at the bottom, both in the annotate TUI browser (Arnaldo Carvalho de Melo) - Remove duplicated 'samples' in lost samples warning in 'perf report' (Arnaldo Carvalho de Melo) - Synchronize i915_drm.h, silencing the perf build process, automagically adding support for the new DRM_I915_QUERY ioctl (Arnaldo Carvalho de Melo) - Make auxtrace_queues__add_buffer() allocate struct buffer, from a patchkit already applied (Adrian Hunter) - Fix the --stdio2/TUI annotate output to include group details, be it for a recorded '{a,b,f}' explicit event group or when forcing group display using 'perf report --group' for a set of events not recorded as a group (Arnaldo Carvalho de Melo) - Fix display artifacts in the ui browser (base class for the annotate and main report/top TUI browser) related to the extra title lines work (Arnaldo Carvalho de Melo) - perf auxtrace refactorings, leftovers from a previously partially processed patchset (Adrian Hunter) - Fix the builtin clang build (Sandipan Das, Arnaldo Carvalho de Melo) - Synchronize i915_drm.h, silencing a perf build warning and in the process automagically adding support for a new ioctl command (Arnaldo Carvalho de Melo) - Fix a strncpy issue in uprobe tracing" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) perf/core: Need CAP_SYS_ADMIN to create k/uprobe with perf_event_open() tracing/uprobe_event: Fix strncpy corner case perf/core: Fix perf_uprobe_init() perf/core: Fix perf_kprobe_init() perf/core: Fix use-after-free in uprobe_perf_close() perf tests clang: Fix function name for clang IR test perf clang: Add support for recent clang versions perf tools: Fix perf builds with clang support perf tools: No need to include namespaces.h in util.h perf hists browser: Remove leftover from row returned from refresh perf hists browser: Show extra_title_lines in the 'D' debug hotkey perf auxtrace: Make auxtrace_queues__add_buffer() do CPU filtering tools headers uapi: Synchronize i915_drm.h perf report: Remove duplicated 'samples' in lost samples warning perf ui browser: Fixup cleaning unused lines at the bottom perf annotate browser: Fixup vertical line separating metrics from instructions perf annotate: Show group details on the title line perf auxtrace: Make auxtrace_queues__add_buffer() allocate struct buffer perf/x86/intel: Move regs->flags EXACT bit init perf trace: Remove redundant ')' ...
2018-04-15Merge branch 'efi-urgent-for-linus' of ↵Linus Torvalds1-1/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 EFI bootup fixlet from Thomas Gleixner: "A single fix for an early boot warning caused by invoking this_cpu_has() before SMP initialization" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Fix bogus warning during EFI bootup, use boot_cpu_has() instead of this_cpu_has() in build_cr3_noflush()
2018-04-15Merge branch 'irq-core-for-linus' of ↵Linus Torvalds1-56/+106
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq affinity fixes from Thomas Gleixner: - Fix error path handling in the affinity spreading code - Make affinity spreading smarter to avoid issues on systems which claim to have hotpluggable CPUs while in fact they can't hotplug anything. So instead of trying to spread the vectors (and thereby the associated device queues) to all possibe CPUs, spread them on all present CPUs first. If there are left over vectors after that first step they are spread among the possible, but not present CPUs which keeps the code backwards compatible for virtual decives and NVME which allocate a queue per possible CPU, but makes the spreading smarter for devices which have less queues than possible or present CPUs. * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq/affinity: Spread irq vectors among present CPUs as far as possible genirq/affinity: Allow irq spreading from a given starting point genirq/affinity: Move actual irq vector spreading into a helper function genirq/affinity: Rename *node_to_possible_cpumask as *node_to_cpumask genirq/affinity: Don't return with empty affinity masks on error
2018-04-15Merge tag 'for-linus' of git://github.com/openrisc/linuxLinus Torvalds1-2/+0
Pull OpenRISC fixlet from Stafford Horne: "Just one small thing here, it came in a while back but I didnt have anything in my 4.16 queue, still its the only thing for 4.17 so sending it alone. Small cleanup: remove unused __ARCH_HAVE_MMU define" * tag 'for-linus' of git://github.com/openrisc/linux: openrisc: remove unused __ARCH_HAVE_MMU define
2018-04-15Merge tag 'powerpc-4.17-2' of ↵Linus Torvalds10-40/+63
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - Fix crashes when loading modules built with a different CONFIG_RELOCATABLE value by adding CONFIG_RELOCATABLE to vermagic. - Fix busy loops in the OPAL NVRAM driver if we get certain error conditions from firmware. - Remove tlbie trace points from KVM code that's called in real mode, because it causes crashes. - Fix checkstops caused by invalid tlbiel on Power9 Radix. - Ensure the set of CPU features we "know" are always enabled is actually the minimal set when we build with support for firmware supplied CPU features. Thanks to: Aneesh Kumar K.V, Anshuman Khandual, Nicholas Piggin. * tag 'powerpc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s: Fix CPU_FTRS_ALWAYS vs DT CPU features powerpc/mm/radix: Fix checkstops caused by invalid tlbiel KVM: PPC: Book3S HV: trace_tlbie must not be called in realmode powerpc/8xx: Fix build with hugetlbfs enabled powerpc/powernv: Fix OPAL NVRAM driver OPAL_BUSY loops powerpc/powernv: define a standard delay for OPAL_BUSY type retry loops powerpc/fscr: Enable interrupts earlier before calling get_user() powerpc/64s: Fix section mismatch warnings from setup_rfi_flush() powerpc/modules: Fix crashes by adding CONFIG_RELOCATABLE to vermagic
2018-04-14Merge branch 'akpm' (patches from Andrew)Linus Torvalds29-654/+681
Merge yet more updates from Andrew Morton: - various hotfixes - kexec_file updates and feature work * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (27 commits) kernel/kexec_file.c: move purgatories sha256 to common code kernel/kexec_file.c: allow archs to set purgatory load address kernel/kexec_file.c: remove mis-use of sh_offset field during purgatory load kernel/kexec_file.c: remove unneeded variables in kexec_purgatory_setup_sechdrs kernel/kexec_file.c: remove unneeded for-loop in kexec_purgatory_setup_sechdrs kernel/kexec_file.c: split up __kexec_load_puragory kernel/kexec_file.c: use read-only sections in arch_kexec_apply_relocations* kernel/kexec_file.c: search symbols in read-only kexec_purgatory kernel/kexec_file.c: make purgatory_info->ehdr const kernel/kexec_file.c: remove checks in kexec_purgatory_load include/linux/kexec.h: silence compile warnings kexec_file, x86: move re-factored code to generic side x86: kexec_file: clean up prepare_elf64_headers() x86: kexec_file: lift CRASH_MAX_RANGES limit on crash_mem buffer x86: kexec_file: remove X86_64 dependency from prepare_elf64_headers() x86: kexec_file: purge system-ram walking from prepare_elf64_headers() kexec_file,x86,powerpc: factor out kexec_file_ops functions kexec_file: make use of purgatory optional proc: revalidate misc dentries mm, slab: reschedule cache_reap() on the same CPU ...
2018-04-13kernel/kexec_file.c: move purgatories sha256 to common codePhilipp Rudo5-4/+28
The code to verify the new kernels sha digest is applicable for all architectures. Move it to common code. One problem is the string.c implementation on x86. Currently sha256 includes x86/boot/string.h which defines memcpy and memset to be gcc builtins. By moving the sha256 implementation to common code and changing the include to linux/string.h both functions are no longer defined. Thus definitions have to be provided in x86/purgatory/string.c Link: http://lkml.kernel.org/r/20180321112751.22196-12-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: allow archs to set purgatory load addressPhilipp Rudo4-32/+31
For s390 new kernels are loaded to fixed addresses in memory before they are booted. With the current code this is a problem as it assumes the kernel will be loaded to an 'arbitrary' address. In particular, kexec_locate_mem_hole searches for a large enough memory region and sets the load address (kexec_bufer->mem) to it. Luckily there is a simple workaround for this problem. By returning 1 in arch_kexec_walk_mem, kexec_locate_mem_hole is turned off. This allows the architecture to set kbuf->mem by hand. While the trick works fine for the kernel it does not for the purgatory as here the architectures don't have access to its kexec_buffer. Give architectures access to the purgatories kexec_buffer by changing kexec_load_purgatory to take a pointer to it. With this change architectures have access to the buffer and can edit it as they need. A nice side effect of this change is that we can get rid of the purgatory_info->purgatory_load_address field. As now the information stored there can directly be accessed from kbuf->mem. Link: http://lkml.kernel.org/r/20180321112751.22196-11-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: remove mis-use of sh_offset field during purgatory loadPhilipp Rudo2-34/+13
The current code uses the sh_offset field in purgatory_info->sechdrs to store a pointer to the current load address of the section. Depending whether the section will be loaded or not this is either a pointer into purgatory_info->purgatory_buf or kexec_purgatory. This is not only a violation of the ELF standard but also makes the code very hard to understand as you cannot tell if the memory you are using is read-only or not. Remove this misuse and store the offset of the section in pugaroty_info->purgatory_buf in sh_offset. Link: http://lkml.kernel.org/r/20180321112751.22196-10-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: remove unneeded variables in kexec_purgatory_setup_sechdrsPhilipp Rudo1-22/+12
The main loop currently uses quite a lot of variables to update the section headers. Some of them are unnecessary. So clean them up a little. Link: http://lkml.kernel.org/r/20180321112751.22196-9-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: remove unneeded for-loop in kexec_purgatory_setup_sechdrsPhilipp Rudo1-46/+30
To update the entry point there is an extra loop over all section headers although this can be done in the main loop. So move it there and eliminate the extra loop and variable to store the 'entry section index'. Also, in the main loop, move the usual case, i.e. non-bss section, out of the extra if-block. Link: http://lkml.kernel.org/r/20180321112751.22196-8-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: split up __kexec_load_puragoryPhilipp Rudo1-97/+103
When inspecting __kexec_load_purgatory you find that it has two tasks 1) setting up the kexec_buffer for the new kernel and, 2) setting up pi->sechdrs for the final load address. The two tasks are independent of each other. To improve readability split up __kexec_load_purgatory into two functions, one for each task, and call them directly from kexec_load_purgatory. Link: http://lkml.kernel.org/r/20180321112751.22196-7-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: use read-only sections in arch_kexec_apply_relocations*Philipp Rudo3-61/+71
When the relocations are applied to the purgatory only the section the relocations are applied to is writable. The other sections, i.e. the symtab and .rel/.rela, are in read-only kexec_purgatory. Highlight this by marking the corresponding variables as 'const'. While at it also change the signatures of arch_kexec_apply_relocations* to take section pointers instead of just the index of the relocation section. This removes the second lookup and sanity check of the sections in arch code. Link: http://lkml.kernel.org/r/20180321112751.22196-6-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: search symbols in read-only kexec_purgatoryPhilipp Rudo1-16/+22
The stripped purgatory does not contain a symtab. So when looking for symbols this is done in read-only kexec_purgatory. Highlight this by marking the corresponding variables as 'const'. Link: http://lkml.kernel.org/r/20180321112751.22196-5-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: make purgatory_info->ehdr constPhilipp Rudo2-8/+13
The kexec_purgatory buffer is read-only. Thus all pointers into kexec_purgatory are read-only, too. Point this out by explicitly marking purgatory_info->ehdr as 'const' and update the comments in purgatory_info. Link: http://lkml.kernel.org/r/20180321112751.22196-4-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kernel/kexec_file.c: remove checks in kexec_purgatory_loadPhilipp Rudo1-14/+0
Before the purgatory is loaded several checks are done whether the ELF file in kexec_purgatory is valid or not. These checks are incomplete. For example they don't check for the total size of the sections defined in the section header table or if the entry point actually points into the purgatory. On the other hand the purgatory, although an ELF file on its own, is part of the kernel. Thus not trusting the purgatory means not trusting the kernel build itself. So remove all validity checks on the purgatory and just trust the kernel build. Link: http://lkml.kernel.org/r/20180321112751.22196-3-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13include/linux/kexec.h: silence compile warningsPhilipp Rudo1-0/+2
Patch series "kexec_file: Clean up purgatory load", v2. Following the discussion with Dave and AKASHI, here are the common code patches extracted from my recent patch set (Add kexec_file_load support to s390) [1]. The patches were extracted to allow upstream integration together with AKASHI's common code patches before the arch code gets adjusted to the new base. The reason for this series is to prepare common code for adding kexec_file_load to s390 as well as cleaning up the mis-use of the sh_offset field during purgatory load. In detail this series contains: Patch #1&2: Minor cleanups/fixes. Patch #3-9: Clean up the purgatory load/relocation code. Especially remove the mis-use of the purgatory_info->sechdrs->sh_offset field, currently holding a pointer into either kexec_purgatory (ro) or purgatory_buf (rw) depending on the section. With these patches the section address will be calculated verbosely and sh_offset will contain the offset of the section in the stripped purgatory binary (purgatory_buf). Patch #10: Allows architectures to set the purgatory load address. This patch is important for s390 as the kernel and purgatory have to be loaded to fixed addresses. In current code this is impossible as the purgatory load is opaque to the architecture. Patch #11: Moves x86 purgatories sha implementation to common lib/ directory to allow reuse in other architectures. This patch (of 11) When building the kernel with CONFIG_KEXEC_FILE enabled gcc prints a compile warning multiple times. In file included from <path>/linux/init/initramfs.c:526:0: <path>/include/linux/kexec.h:120:9: warning: `struct kimage' declared inside parameter list [enabled by default] unsigned long cmdline_len); ^ This is because the typedefs for kexec_file_load uses struct kimage before it is declared. Fix this by simply forward declaring struct kimage. Link: http://lkml.kernel.org/r/20180321112751.22196-2-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13kexec_file, x86: move re-factored code to generic sideAKASHI Takahiro3-188/+201
In the previous patches, commonly-used routines, exclude_mem_range() and prepare_elf64_headers(), were carved out. Now place them in kexec common code. A prefix "crash_" is given to each of their names to avoid possible name collisions. Link: http://lkml.kernel.org/r/20180306102303.9063-8-takahiro.akashi@linaro.org Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Acked-by: Dave Young <dyoung@redhat.com> Tested-by: Dave Young <dyoung@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Baoquan He <bhe@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-13x86: kexec_file: clean up prepare_elf64_headers()AKASHI Takahiro1-11/+7
Removing bufp variable in prepare_elf64_headers() makes the code simpler and more understandable. Link: http://lkml.kernel.org/r/20180306102303.9063-7-takahiro.akashi@linaro.org Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Acked-by: Dave Young <dyoung@redhat.com> Tested-by: Dave Young <dyoung@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Baoquan He <bhe@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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