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2017-04-04drm: document drm_ioctl.[hc]Daniel Vetter1-15/+101
Also unify/merge with the existing stuff. I was a bit torn where to put this, but in the end I decided to put all the ioctl/sysfs/debugfs stuff into drm-uapi.rst. That means we have a bit a split with the other uapi related stuff used internally, like drm_file.[hc], but I think overall this makes more sense. If it's too confusing we can always add more cross-links to make it more discoverable. But the auto-sprinkling of links kernel-doc already does seems sufficient. Also for prettier docs and more cross-links, switch the internal defines over to an enum, as usual. v2: Update kerneldoc fro drm_compat_ioctl too (caught by 0day), plus a bit more drive-by polish. v3: Fix typo, spotted by xerpi on irc (Sergi). v4: Add missing space in comment (Neil). Cc: Sergi Granell <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2017-04-04drm: Consolidate and document sysfs supportDaniel Vetter2-8/+5
- remove docs for internal func, doesn't add value - add short overview snippet instead explaining that drivers don't have to bother themselves with reg/unreg concerns - drop the ttm comment about drmP.h, drmP.h is disappearing ... Reviewed-by: Neil Armstrong <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2017-04-04drm: bridge: dw-hdmi: Move HPD handling to PHY operationsNeil Armstrong1-0/+5
The HDMI TX controller support HPD and RXSENSE signaling from the PHY via it's STAT0 PHY interface, but some vendor PHYs can manage these signals independently from the controller, thus these STAT0 handling should be moved to PHY specific operations and become optional. The existing STAT0 HPD and RXSENSE handling code is refactored into a supplementaty set of default PHY operations that are used automatically when the platform glue doesn't provide its own operations. Reviewed-by: Jose Abreu <[email protected]> Reviewed-by: Archit Taneja <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Signed-off-by: Neil Armstrong <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2017-04-04drm: bridge: dw-hdmi: Switch to V4L bus format and encodingsNeil Armstrong1-0/+63
Switch code to use the newly introduced V4L bus formats IDs instead of custom defines. Also use the V4L encoding defines. Some display pipelines can only provide non-RBG input pixels to the HDMI TX Controller, this patch takes the pixel format from the plat_data if provided. Reviewed-by: Jose Abreu <[email protected]> Reviewed-by: Archit Taneja <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Signed-off-by: Neil Armstrong <[email protected]>
2017-04-04reset: add exported __reset_control_get, return NULL if optionalPhilipp Zabel1-8/+14
Rename the internal __reset_control_get/put functions to __reset_control_get/put_internal and add an exported __reset_control_get equivalent to __of_reset_control_get that takes a struct device parameter. This avoids the confusing call to __of_reset_control_get in the non-DT case and fixes the devm_reset_control_get_optional function to return NULL if RESET_CONTROLLER is enabled but dev->of_node == NULL. Fixes: bb475230b8e5 ("reset: make optional functions really optional") Reported-by: Andy Shevchenko <[email protected]> Tested-by: Andy Shevchenko <[email protected]> Cc: Ramiro Oliveira <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2017-04-04Merge tag 'topic/synopsys-media-formats-2017-04-03' of ↵Sean Paul9-16/+39
git://anongit.freedesktop.org/git/drm-misc into drm-misc-next Media formats for synopsys HDMI TX Controller Signed-off-by: Sean Paul <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/20170403163544.kcw5kk52tgku5xua@art_vandelay
2017-04-04drm: Add data transmission order bus flagLaurent Pinchart1-0/+4
The flags indicate whether data is transmitted LSB to MSB or MSB to LSB on the bus. The exact meaning is bus-type dependent. For instance, for LVDS buses the flags indicate whether the seven data bits transmitted in a clock pulse are sent in normal order (MSB to LSB, slots 0 to 6) or reverse order (LSB to MSB, slots 6 to 0). Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Thierry Reding <[email protected]>
2017-04-04KVM: arm/arm64: vgic: Fix GICC_PMR uaccess on GICv3 and clarify ABIChristoffer Dall1-0/+3
As an oversight, for GICv2, we accidentally export the GICC_PMR register in the format of the GICH_VMCR.VMPriMask field in the lower 5 bits of a word, meaning that userspace must always use the lower 5 bits to communicate with the KVM device and must shift the value left by 3 places to obtain the actual priority mask level. Since GICv3 supports the full 8 bits of priority masking in the ICH_VMCR, we have to fix the value we export when emulating a GICv2 on top of a hardware GICv3 and exporting the emulated GICv2 state to userspace. Take the chance to clarify this aspect of the ABI. Reviewed-by: Marc Zyngier <[email protected]> Signed-off-by: Christoffer Dall <[email protected]>
2017-04-04KVM: arm64: Ensure LRs are clear when they should beChristoffer Dall1-0/+1
We currently have some code to clear the list registers on GICv3, but we never call this code, because the caller got nuked when removing the old vgic. We also used to have a similar GICv2 part, but that got lost in the process too. Let's reintroduce the logic for GICv2 and call the logic when we initialize the use of hypervisors on the CPU, for example when first loading KVM or when exiting a low power state. Reviewed-by: Marc Zyngier <[email protected]> Signed-off-by: Christoffer Dall <[email protected]> Signed-off-by: Marc Zyngier <[email protected]>
2017-04-03sctp: check for dst and pathmtu update in sctp_packet_configXin Long1-3/+14
This patch is to move sctp_transport_dst_check into sctp_packet_config from sctp_packet_transmit and add pathmtu check in sctp_packet_config. With this fix, sctp can update dst or pathmtu before appending chunks, which can void dropping packets in sctp_packet_transmit when dst is obsolete or dst's mtu is changed. This patch is also to improve some other codes in sctp_packet_config. It updates packet max_size with gso_max_size, checks for dst and pathmtu, and appends ecne chunk only when packet is empty and asoc is not NULL. It makes sctp flush work better, as we only need to set up them once for one flush schedule. It's also safe, since asoc is NULL only when the packet is created by sctp_ootb_pkt_new in which it just gets the new dst, no need to do more things for it other than set packet with transport's pathmtu. Signed-off-by: Xin Long <[email protected]> Acked-by: Marcelo Ricardo Leitner <[email protected]> Acked-by: Neil Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-04-04Merge branch 'vmwgfx-fixes-4.11' of ↵Dave Airlie1-1/+4
git://people.freedesktop.org/~thomash/linux into drm-fixes Set of vmwgfx fixes * 'vmwgfx-fixes-4.11' of git://people.freedesktop.org/~thomash/linux: drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() drm/vmwgfx: Remove getparam error message drm/ttm: Avoid calling drm_ht_remove from atomic context drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl() drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl() drm/vmwgfx: Type-check lookups of fence objects
2017-04-03media: uapi: Add RGB and YUV bus formats for Synopsys HDMI TX ControllerNeil Armstrong1-2/+11
In order to describe the RGB and YUV bus formats used to feed the Synopsys DesignWare HDMI TX Controller, add missing formats to the list of Bus Formats. Documentation for these formats is added in a separate patch. Reviewed-by: Archit Taneja <[email protected]> Reviewed-by: Jose Abreu <[email protected]> Acked-by: Hans Verkuil <[email protected]> Acked-by: Mauro Carvalho Chehab <[email protected]> Signed-off-by: Neil Armstrong <[email protected]> Signed-off-by: Sean Paul <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2017-04-03Merge tag 'drm-misc-next-2017-03-31' of ↵Dave Airlie24-254/+681
git://anongit.freedesktop.org/git/drm-misc into drm-next drm-misc for 4.12: Core: - Removed some fb subsampling dimension checks from core (Ville) - Some MST slot cleanup (Dhinakaran) - Extracted drm_debugfs.h & drm_ioctl.h from drmP.h (Daniel) - Added drm_atomic_helper_shutdown() to compliment suspend/resume counterparts (Daniel) - Pipe context through legacy modeset to remove legacy_backoff nasties (Daniel) - Cleanups around vblank as well as allowing lockless counter reads (Chris W.) - VGA Switcheroo added to MAINTAINERS with Lukas Wunner as reviewer (Lukas) Drivers: - Enhancements to rockchip driver probe (Jeffy) and dsi (Chris Z.) - Thunderbolt external GPU awareness added (Lukas) * tag 'drm-misc-next-2017-03-31' of git://anongit.freedesktop.org/git/drm-misc: (63 commits) apple-gmux: Don't switch external DP port on 2011+ MacBook Pros drm/nouveau: Don't register Thunderbolt eGPU with vga_switcheroo drm/amdgpu: Don't register Thunderbolt eGPU with vga_switcheroo drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo PCI: Recognize Thunderbolt devices MAINTAINERS: Add Lukas Wunner as reviewer for vga_switcheroo drm: Fix locking gotcha in page_flip ioctl drm: Clarify the role of plane_state argument to drm_simple update(). drm: Clear e after kfree in drm_mode_page_flip_ioctl drm: Convert cmpxchg(bool) back to a two step operation drm/bridge: ti-tfp410: support hpd via gpio drm: use .hword to represent 16-bit numbers Revert unrelated part of "drm: simplify the locking in the GETCRTC ioctl" drm: Fixup failure paths in drm_atomic_helper_set_config drm: Peek at the current counter/timestamp for vblank queries drm: Refactor vblank sequence number comparison drm: vblank cannot be enabled if dev->irq_enabled is false drm: Mark up accesses of vblank->enabled outside of its spinlock drm: Make the decision to keep vblank irq enabled earlier drm/atomic-helper: Remove the backoff hack from set_config ...
2017-04-03statx: Include a mask for stx_attributes in struct statxDavid Howells2-2/+3
Include a mask in struct stat to indicate which bits of stx_attributes the filesystem actually supports. This would also be useful if we add another system call that allows you to do a 'bulk attribute set' and pass in a statx struct with the masks appropriately set to say what you want to set. Signed-off-by: David Howells <[email protected]> Signed-off-by: Al Viro <[email protected]>
2017-04-03statx: Reserve the top bit of the mask for future struct expansionDavid Howells1-0/+1
Reserve the top bit of the mask for future expansion of the statx struct and give an error if statx() sees it set. All the other bits are ignored if we see them set but don't support the bit; we just clear the bit in the returned mask. Signed-off-by: David Howells <[email protected]> Signed-off-by: Al Viro <[email protected]>
2017-04-02Merge branch 'sched-urgent-for-linus' of ↵Linus Torvalds1-6/+7
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Thomas Gleixner: "This update provides: - make the scheduler clock switch to unstable mode smooth so the timestamps stay at microseconds granularity instead of switching to tick granularity. - unbreak perf test tsc by taking the new offset into account which was added in order to proveide better sched clock continuity - switching sched clock to unstable mode runs all clock related computations which affect the sched clock output itself from a work queue. In case of preemption sched clock uses half updated data and provides wrong timestamps. Keep the math in the protected context and delegate only the static key switch to workqueue context. - remove a duplicate header include" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/headers: Remove duplicate #include <linux/sched/debug.h> line sched/clock: Fix broken stable to unstable transfer sched/clock, x86/perf: Fix "perf test tsc" sched/clock: Fix clear_sched_clock_stable() preempt wobbly
2017-04-02Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds2-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Thomas Gleixner: "Two small fixes for the new CLKEVT_OF infrastructure" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: vmlinux.lds: Add __clkevt_of_table to kernel clockevents: Fix syntax error in clkevt-of macro
2017-04-02[iov_iter] new privimitive: iov_iter_revert()Al Viro1-1/+5
opposite to iov_iter_advance(); the caller is responsible for never using it to move back past the initial position. Cc: [email protected] Signed-off-by: Al Viro <[email protected]>
2017-04-02nvme: Correct NVMF enum values to match NVMe-oF rev 1.0Roland Dreier1-8/+8
The enum values for QPTYPE, PRTYPE and CMS are off by 1 from the values defined in figure 42 of the NVM Express over Fabrics 1.0: http://www.nvmexpress.org/wp-content/uploads/NVMe_over_Fabrics_1_0_Gold_20160605-1.pdf Fix our enums to match the final spec. Signed-off-by: Roland Dreier <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Signed-off-by: Sagi Grimberg <[email protected]>
2017-03-31kasan: report only the first error by defaultMark Rutland1-0/+3
Disable kasan after the first report. There are several reasons for this: - Single bug quite often has multiple invalid memory accesses causing storm in the dmesg. - Write OOB access might corrupt metadata so the next report will print bogus alloc/free stacktraces. - Reports after the first easily could be not bugs by itself but just side effects of the first one. Given that multiple reports usually only do harm, it makes sense to disable kasan after the first one. If user wants to see all the reports, the boot-time parameter kasan_multi_shot must be used. [[email protected]: wrote changelog and doc, added missing include] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mark Rutland <[email protected]> Signed-off-by: Andrey Ryabinin <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-03-31mm: fix section name for .data..ro_after_initKees Cook2-5/+5
A section name for .data..ro_after_init was added by both: commit d07a980c1b8d ("s390: add proper __ro_after_init support") and commit d7c19b066dcf ("mm: kmemleak: scan .data.ro_after_init") The latter adds incorrect wrapping around the existing s390 section, and came later. I'd prefer the s390 naming, so this moves the s390-specific name up to the asm-generic/sections.h and renames the section as used by kmemleak (and in the future, kernel/extable.c). Link: http://lkml.kernel.org/r/20170327192213.GA129375@beast Signed-off-by: Kees Cook <[email protected]> Acked-by: Heiko Carstens <[email protected]> [s390 parts] Acked-by: Jakub Kicinski <[email protected]> Cc: Eddie Kovsky <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-03-31mm: rmap: fix huge file mmap accounting in the memcg statsJohannes Weiner1-0/+6
Huge pages are accounted as single units in the memcg's "file_mapped" counter. Account the correct number of base pages, like we do in the corresponding node counter. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Johannes Weiner <[email protected]> Reviewed-by: Kirill A. Shutemov <[email protected]> Acked-by: Michal Hocko <[email protected]> Cc: Vladimir Davydov <[email protected]> Cc: <[email protected]> [4.8+] Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-03-31mm: move mm_percpu_wq initialization earlierMichal Hocko1-0/+2
Yang Li has reported that drain_all_pages triggers a WARN_ON which means that this function is called earlier than the mm_percpu_wq is initialized on arm64 with CMA configured: WARNING: CPU: 2 PID: 1 at mm/page_alloc.c:2423 drain_all_pages+0x244/0x25c Modules linked in: CPU: 2 PID: 1 Comm: swapper/0 Not tainted 4.11.0-rc1-next-20170310-00027-g64dfbc5 #127 Hardware name: Freescale Layerscape 2088A RDB Board (DT) task: ffffffc07c4a6d00 task.stack: ffffffc07c4a8000 PC is at drain_all_pages+0x244/0x25c LR is at start_isolate_page_range+0x14c/0x1f0 [...] drain_all_pages+0x244/0x25c start_isolate_page_range+0x14c/0x1f0 alloc_contig_range+0xec/0x354 cma_alloc+0x100/0x1fc dma_alloc_from_contiguous+0x3c/0x44 atomic_pool_init+0x7c/0x208 arm64_dma_init+0x44/0x4c do_one_initcall+0x38/0x128 kernel_init_freeable+0x1a0/0x240 kernel_init+0x10/0xfc ret_from_fork+0x10/0x20 Fix this by moving the whole setup_vmstat which is an initcall right now to init_mm_internals which will be called right after the WQ subsystem is initialized. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Michal Hocko <[email protected]> Reported-by: Yang Li <[email protected]> Tested-by: Yang Li <[email protected]> Tested-by: Xiaolong Ye <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Tetsuo Handa <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-03-31drm/vmwgfx: Define an overlaid handle_close ioctl.Thomas Hellstrom1-0/+24
Instead of providing an ioctl for each handle type, provide a single handle_close ioctl, and reuse the UNREF_DMABUF ioctl. Signed-off-by: Thomas Hellstrom <[email protected]> Reviewed-by: Sinclair Yeh <[email protected]>
2017-03-30target: Fix ALUA transition state race between multiple initiatorsMike Christie1-6/+2
Multiple threads could be writing to alua_access_state at the same time, or there could be multiple STPGs in flight (different initiators sending them or one initiator sending them to different ports), or a combo of both and the core_alua_do_transition_tg_pt calls will race with each other. Because from the last patches we no longer delay running core_alua_do_transition_tg_pt_work, there does not seem to be any point in running that in a workqueue. And, we always wait for it to complete one way or another, so we can sleep in this code path. So, this patch made over target-pending just adds a mutex and does the work core_alua_do_transition_tg_pt_work was doing in core_alua_do_transition_tg_pt. There is also no need to use an atomic for the tg_pt_gp_alua_access_state. In core_alua_do_transition_tg_pt we will test and set it under the transition mutex. And, it is a int/32 bits so in the other places where it is read, we will never see it partially updated. Signed-off-by: Mike Christie <[email protected]> Signed-off-by: Nicholas Bellinger <[email protected]>
2017-03-30target: Fix unknown fabric callback queue-full errorsNicholas Bellinger1-0/+1
This patch fixes a set of queue-full response handling bugs, where outgoing responses are leaked when a fabric driver is propagating non -EAGAIN or -ENOMEM errors to target-core. It introduces TRANSPORT_COMPLETE_QF_ERR state used to signal when CHECK_CONDITION status should be generated, when fabric driver ->write_pending(), ->queue_data_in(), or ->queue_status() callbacks fail with non -EAGAIN or -ENOMEM errors, and data-transfer should not be retried. Note all fabric driver -EAGAIN and -ENOMEM errors are still retried indefinately with associated data-transfer callbacks, following existing queue-full logic. Also fix two missing ->queue_status() queue-full cases related to CMD_T_ABORTED w/ TAS status handling. Reported-by: Potnuri Bharat Teja <[email protected]> Reviewed-by: Potnuri Bharat Teja <[email protected]> Tested-by: Potnuri Bharat Teja <[email protected]> Cc: Potnuri Bharat Teja <[email protected]> Reported-by: Steve Wise <[email protected]> Cc: Steve Wise <[email protected]> Cc: Sagi Grimberg <[email protected]> Signed-off-by: Nicholas Bellinger <[email protected]>
2017-03-30PCI: Recognize Thunderbolt devicesLukas Wunner1-0/+23
Detect on probe whether a PCI device is part of a Thunderbolt controller. Intel uses a Vendor-Specific Extended Capability (VSEC) with ID 0x1234 on such devices. Detect presence of this VSEC and cache it in a newly added is_thunderbolt bit in struct pci_dev. Also, add a helper to check whether a given PCI device is situated on a Thunderbolt daisy chain (i.e., below a PCI device with is_thunderbolt set). The necessity arises from the following: * If an external Thunderbolt GPU is connected to a dual GPU laptop, that GPU is currently registered with vga_switcheroo even though it can neither drive the laptop's panel nor be powered off by the platform. To vga_switcheroo it will appear as if two discrete GPUs are present. As a result, when the external GPU is runtime suspended, vga_switcheroo will cut power to the internal discrete GPU which may not be runtime suspended at all at this moment. The solution is to not register external GPUs with vga_switcheroo, which necessitates a way to recognize if they're on a Thunderbolt daisy chain. * Dual GPU MacBook Pros introduced 2011+ can no longer switch external DisplayPort ports between GPUs. (They're no longer just used for DP but have become combined DP/Thunderbolt ports.) The driver to switch the ports, drivers/platform/x86/apple-gmux.c, needs to detect presence of a Thunderbolt controller and, if found, keep external ports permanently switched to the discrete GPU. v2: Make kerneldoc for pci_is_thunderbolt_attached() more precise, drop portion of commit message pertaining to separate series. (Bjorn Helgaas) Cc: Andreas Noever <[email protected]> Cc: Michael Jamet <[email protected]> Cc: Tomas Winkler <[email protected]> Cc: Amir Levy <[email protected]> Acked-by: Bjorn Helgaas <[email protected]> Signed-off-by: Lukas Wunner <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/0ab165a4a35c0b60f29d4c306c653ead14fcd8f9.1489145162.git.lukas@wunner.de
2017-03-30drm: Clarify the role of plane_state argument to drm_simple update().Eric Anholt1-1/+1
Like the atomic update hook it's wrapping, the plane_state is the old one, and the new one is in plane->state. Both msxfb and tinydrm use it correctly, but I mistook it for the new state in pl111 due to its naming. Signed-off-by: Eric Anholt <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected] Reviewed-by: Daniel Vetter <[email protected]>
2017-03-30sctp: alloc stream info when initializing asocXin Long1-1/+2
When sending a msg without asoc established, sctp will send INIT packet first and then enqueue chunks. Before receiving INIT_ACK, stream info is not yet alloced. But enqueuing chunks needs to access stream info, like out stream state and out stream cnt. This patch is to fix it by allocing out stream info when initializing an asoc, allocing in stream and re-allocing out stream when processing init. Signed-off-by: Xin Long <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-03-30drm/ttm, drm/vmwgfx: Relax permission checking when opening surfacesThomas Hellstrom1-1/+4
Previously, when a surface was opened using a legacy (non prime) handle, it was verified to have been created by a client in the same master realm. Relax this so that opening is also allowed recursively if the client already has the surface open. This works around a regression in svga mesa where opening of a shared surface is used recursively to obtain surface information. Cc: <[email protected]> Signed-off-by: Thomas Hellstrom <[email protected]> Reviewed-by: Sinclair Yeh <[email protected]>
2017-03-30target: Avoid mappedlun symlink creation during lun shutdownNicholas Bellinger1-0/+1
This patch closes a race between se_lun deletion during configfs unlink in target_fabric_port_unlink() -> core_dev_del_lun() -> core_tpg_remove_lun(), when transport_clear_lun_ref() blocks waiting for percpu_ref RCU grace period to finish, but a new NodeACL mappedlun is added before the RCU grace period has completed. This can happen in target_fabric_mappedlun_link() because it only checks for se_lun->lun_se_dev, which is not cleared until after transport_clear_lun_ref() percpu_ref RCU grace period finishes. This bug originally manifested as NULL pointer dereference OOPsen in target_stat_scsi_att_intr_port_show_attr_dev() on v4.1.y code, because it dereferences lun->lun_se_dev without a explicit NULL pointer check. In post v4.1 code with target-core RCU conversion, the code in target_stat_scsi_att_intr_port_show_attr_dev() no longer uses se_lun->lun_se_dev, but the same race still exists. To address the bug, go ahead and set se_lun>lun_shutdown as early as possible in core_tpg_remove_lun(), and ensure new NodeACL mappedlun creation in target_fabric_mappedlun_link() fails during se_lun shutdown. Reported-by: James Shen <[email protected]> Cc: James Shen <[email protected]> Tested-by: James Shen <[email protected]> Cc: [email protected] # 3.10+ Signed-off-by: Nicholas Bellinger <[email protected]>
2017-03-29drm/ttm: decrease ttm bo priority numberRoger.He1-1/+1
decrease and also reserve priority number for KFD using Signed-off-by: Roger.He <[email protected]> Reviewed-by: Christian König <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29uapi/drm:add new flag for PreemptionMonk Liu1-0/+3
when MCBP supported, we will set pre_enb bit for those IBs with PREEMPT flag tagged Signed-off-by: Monk Liu <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29uapi/drm:change Preamble DescriptionMonk Liu1-1/+1
Preamble in linux doesn't mean it is CE PREAMBLE IB, instead it means this IB could be dropped if no ctx switch happens. Signed-off-by: Monk Liu <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: add psp firmware info into info query and debugfsHuang Rui1-0/+4
Acked-by: Christian König <[email protected]> Signed-off-by: Huang Rui <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: add tiling flags for GFX9 (v2)Alex Deucher1-2/+8
v2: Marek: allow shifts >32 in AMDGPU_TILING_SET/GET Acked-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: Add asic family for vega10Alex Deucher1-0/+1
Acked-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: add NGG parametersAlex Deucher1-0/+8
NGG (Next Generation Graphics) is a new feature in GFX9.0. This adds the relevant parameters. Acked-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: Add MTYPE flags to GPU VM IOCTL interfaceAlex Xie1-0/+12
Signed-off-by: Alex Xie <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: add a VM mapping replace operation v2Christian König1-0/+1
Add a new operation to replace mappings in a VM with a new one. v2: Fix Jerry's comment, separate out clear operation. Signed-off-by: Christian König <[email protected]> Reviewed-by: Junwei Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: implement AMDGPU_VA_OP_CLEAR v2Christian König1-0/+1
A new VM operation to remove all mappings in a range. v2: limit unmapped area as noted by Jerry Signed-off-by: Christian König <[email protected]> Reviewed-by: Junwei Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29uapi/drm: add AMDGPU_HW_IP_UVD_ENCLeo Liu1-1/+2
Reviewed-by: Christian König <[email protected]> Signed-off-by: Leo Liu <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: export gfx config double offchip LDS buffers (v3)Junwei Zhang1-0/+2
v2: move the config struct to drm_amdgpu_info_device v3: move the config feature to amdgpu_gca_config Signed-off-by: Junwei Zhang <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/ttm: add ttm_bo_init_reservedNicolai Hähnle1-0/+54
This variant of ttm_bo_init returns the validated buffer object with the reservation lock held when resv == NULL. This is convenient for callers that want to use the BO immediately, e.g. for initializing its contents. Signed-off-by: Nicolai Hähnle <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/ttm: fix the documentation of ttm_bo_initNicolai Hähnle1-1/+5
As the comment says: callers of ttm_bo_init cannot rely on having the only reference to the BO when the function returns successfully. Signed-off-by: Nicolai Hähnle <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: expose GPU sensor related informationAlex Deucher1-0/+20
This includes shader/memory clocks, temperature, GPU load, etc. v2: - add sub-queries for AMDPGU_INFO_GPU_SENSOR_* - do not break the ABI v3: - return -ENOENT when amdgpu_dpm == 0 - expose more sensor queries v4: - s/GPU_POWER/GPU_AVG_POWER/ - improve VDDNB/VDDGFX query description - fix amdgpu_dpm check v5: - agd: fix warning v6: - agd: bump version Signed-off-by: Samuel Pitoiset <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/amdgpu: IOCTL interface for PRT support v4Junwei Zhang1-0/+2
Till GFX8 we can only enable PRT support globally, but with the next hardware generation we can do this on a per page basis. Keep the interface consistent by adding PRT mappings and enable support globally on current hardware when the first mapping is made. v2: disable PRT support delayed and on all error paths v3: PRT and other permissions are mutal exclusive, PRT mappings don't need a BO. v4: update PRT mappings durign CS as well, make va_flags 64bit Signed-off-by: Junwei Zhang <[email protected]> Signed-off-by: Christian König <[email protected]> Reviewed-by: Nicolai Hähnle <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2017-03-29drm/etnaviv: submit support for out-fencesPhilipp Zabel1-2/+4
Based on commit 4cd0945901a6 ("drm/msm: submit support for out-fences"). We increment the minor driver version so userspace can detect explicit fence support. Signed-off-by: Philipp Zabel <[email protected]> Signed-off-by: Lucas Stach <[email protected]> --- v3: Changed to work with fence returned from GPU submit.
2017-03-29drm/etnaviv: submit support for in-fencesPhilipp Zabel1-0/+6
Loosely based on commit f0a42bb5423a ("drm/msm: submit support for in-fences"). Unfortunately, struct drm_etnaviv_gem_submit doesn't have a flags field yet, so we have to extend the structure and trust that drm_ioctl will clear the flags for us if an older userspace only submits part of the struct. Signed-off-by: Philipp Zabel <[email protected]> Reviewed-by: Gustavo Padovan <[email protected]> Reviewed-by: Sumit Semwal <[email protected]> Reviewed-by: Lucas Stach <[email protected]> Signed-off-by: Lucas Stach <[email protected]>
2017-03-29drm: Add acquire ctx parameter to ->set_configDaniel Vetter3-3/+6
Surprisingly a lot of legacy drivers roll their own, for runtime pm and because vmwgfx. Also make nouveau's set_config static while at it. Cc: Sinclair Yeh <[email protected]> Cc: Thomas Hellstrom <[email protected]> Cc: Ben Skeggs <[email protected]> Cc: Patrik Jakobsson <[email protected]> Cc: Alex Deucher <[email protected]> Cc: Christian König <[email protected]> Reviewed-by: Harry Wentland <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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