- 28 Apr, 2017 37 commits
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Rex Zhu authored
Replace 8 spaces with tabs. correct {} braces, etc. Signed-off-by:Rex Zhu <Rex.Zhu@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com>
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Rex Zhu authored
Signed-off-by:
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Huang Rui authored
The ret must be 0 here, otherwise, the function will return after init_mem_type. Signed-off-by:
Huang Rui <ray.huang@amd.com> Reviewed-by:
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Huang Rui authored
Signed-off-by:
Michel Dänzer <michel.daenzer@amd.com> Signed-off-by:
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Huang Rui authored
Driver must free the console lock whether driver resuming successful or not. Otherwise, fb_console will be always waiting for the lock and then cause system stuck. [ 244.405541] INFO: task kworker/0:0:4 blocked for more than 120 seconds. [ 244.405543] Tainted: G OE 4.9.0-custom #1 [ 244.405544] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 244.405541] INFO: task kworker/0:0:4 blocked for more than 120 seconds. [ 244.405543] Tainted: G OE 4.9.0-custom #1 [ 244.405544] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 244.405550] kworker/0:0 D 0 4 2 0x00080000 [ 244.405559] Workqueue: events console_callback [ 244.405564] ffff88045a2cfc00 0000000000000000 ffff880462b75940 ffffffff81c0e500 [ 244.405568] ffff880476419280 ffffc900018f7c90 ffffffff817dcf62 000000000000003c [ 244.405572] 0000000100000000 0000000000000002 ffff880462b75940 ffff880462b75940 [ 244.405573] Call Trace: [ 244.405580] [<ffffffff817dcf62>] ? __schedule+0x222/0x6a0 [ 244.405584] [<ffffffff817dd416>] schedule+0x36/0x80 [ 244.405588] [<ffffffff817e041c>] schedule_timeout+0x1fc/0x390 [ 244.405592] [<ffffffff817df1b4>] __down_common+0xa5/0xf8 [ 244.405598] [<ffffffff810b2ca8>] ? put_prev_entity+0x48/0x710 [ 244.405601] [<ffffffff817df224>] __down+0x1d/0x1f [ 244.405606] [<ffffffff810c71a1>] down+0x41/0x50 [ 244.405611] [<ffffffff810d380a>] console_lock+0x1a/0x40 [ 244.405614] [<ffffffff814e3c03>] console_callback+0x13/0x160 [ 244.405617] [<ffffffff817dcf6a>] ? __schedule+0x22a/0x6a0 [ 244.405623] [<ffffffff810954e3>] process_one_work+0x153/0x3f0 [ 244.405628] [<ffffffff81095cab>] worker_thread+0x12b/0x4b0 [ 244.405633] [<ffffffff81095b80>] ? rescuer_thread+0x350/0x350 [ 244.405637] [<ffffffff8109b473>] kthread+0xd3/0xf0 [ 244.405641] [<ffffffff8109b3a0>] ? kthread_park+0x60/0x60 [ 244.405645] [<ffffffff8109b3a0>] ? kthread_park+0x60/0x60 [ 244.405649] [<ffffffff817e1ee5>] ret_from_fork+0x25/0x30 Signed-off-by:
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Christian König authored
Seems to be mandatory for WMV playback. Bugs: https://bugs.freedesktop.org/show_bug.cgi?id=100510Signed-off-by:
Christian König <christian.koenig@amd.com> Acked-by:
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Alex Deucher authored
fixed in: "drm/amdgpu:fix race condition" Reviewed-by:
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Alex Deucher authored
Reviewed-by:
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Christian König authored
Trace on which hub we are doing the flush. v2: fix typo in commit message Signed-off-by:
Andres Rodriguez <andresx7@gmail.com> Signed-off-by:
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Christian König authored
Trace on which VMHUB we assigned an VMID. Signed-off-by:
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Christian König authored
Enable concurrent VM flushes for Vega10. Signed-off-by:
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Christian König authored
For Vega10 we have 18 VM invalidation engines for each VMHUB. Start to assign them manually to the rings. v2: add a BUG_ON if we use to many engines Signed-off-by:
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Christian König authored
Drop invalidating both hubs from each engine. v2: don't use hardcoded values Signed-off-by:
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Christian König authored
This way GFX and MM won't fight for VMIDs any more. Initially disabled since we need to stop flushing all HUBS at the same time as well. Signed-off-by:
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Christian König authored
David suggested this a long time ago, instead of checking each ring just walk over all the VMIDs in reverse LRU order. Signed-off-by:
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Christian König authored
Add the info which ring belonging to which VMHUB. Signed-off-by:
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Frank Min authored
Now VCE block can work for SRIOV, enable ring & ib test. Signed-off-by:
Frank Min <Frank.Min@amd.com> Acked-by:
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Xiangliang Yu authored
Add VCE ring test slow workaround for SRIOV. Signed-off-by:
Xiangliang Yu <Xiangliang.Yu@amd.com> Acked-by:
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Frank Min authored
Update the initialization sequence of VCE to make VCE work. Signed-off-by:
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Trigger Huang authored
In Tonga's virtualization environment, for firmware UCODE_ID_STORAGE, there is no actual firmware data, but we still need alloc a BO and tell the BO's mc address to HW, or world switch will hang on VFs. v2: fix coding style (Alex) Signed-off-by:
Trigger Huang <trigger.huang@amd.com> Reviewed-by:
Monk Liu <monk.liu@amd.com> Acked-by:
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Huang Rui authored
This patch fixes the case when buffer funcs is empty and bo evict is executing. It must double check buffer funcs, otherwise, a NULL pointer dereference kernel panic will be encountered. BUG: unable to handle kernel NULL pointer dereference at 00000000000001a4 IP: [<ffffffffa067b6cd>] amdgpu_evict_flags+0x3d/0xf0 [amdgpu] PGD 0 Oops: 0000 [#1] SMP Modules linked in: amdgpu(OE) ttm drm_kms_helper drm i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt fmem(OE) physmem_drv(OE) rpcsec_gss_krb5 nfsv4 nfs fscache intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic kvm_intel snd_hda_intel snd_hda_codec kvm snd_hda_core joydev eeepc_wmi asus_wmi sparse_keymap snd_hwdep snd_pcm irqbypass crct10dif_pclmul snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq crc32_pclmul snd_seq_device ghash_clmulni_intel aesni_intel aes_x86_64 snd_timer lrw gf128mul mei_me snd glue_helper ablk_helper cryptd tpm_infineon mei lpc_ich serio_raw soundcore shpchp mac_hid nfsd auth_rpcgss nfs_acl lockd grace coretemp sunrpc parport_pc ppdev lp parport autofs4 hid_generic mxm_wmi r8169 usbhid ahci psmouse libahci nvme mii hid nvme_core wmi video CPU: 3 PID: 1627 Comm: kworker/u8:17 Tainted: G OE 4.9.0-custom #1 Hardware name: ASUS All Series/Z87-A, BIOS 1802 01/28/2014 Workqueue: events_unbound async_run_entry_fn task: ffff88021e7057c0 task.stack: ffffc9000262c000 RIP: 0010:[<ffffffffa067b6cd>] [<ffffffffa067b6cd>] amdgpu_evict_flags+0x3d/0xf0 [amdgpu] RSP: 0018:ffffc9000262fb30 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88021e8a5858 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffc9000262fb58 RDI: ffff88021e8a5800 RBP: ffffc9000262fb48 R08: 0000000000000000 R09: ffff88021e8a5814 R10: 000000001def8f01 R11: ffff88021def8c80 R12: ffffc9000262fb58 R13: ffff88021d2b1990 R14: 0000000000000000 R15: ffff88021e8a5858 FS: 0000000000000000(0000) GS:ffff88022ed80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000001a4 CR3: 0000000001c07000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Signed-off-by:
Ken Wang <Qingqing.Wang@amd.com> Signed-off-by:
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Huang Rui authored
ASIC_INIT_COMPLETE bit must be cleared during S3 resuming phase, because VBIOS will check the bit to decide if execute ASIC_Init posting via kernel driver. Signed-off-by:
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Huang Rui authored
Fence buf needs to be used on suspend/resume phase. Signed-off-by:
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Huang Rui authored
Don't fail if DPM is disabled. Signed-off-by:
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Monk Liu authored
sequence is protected by spinlock so don't access sequence in paramter seq when invoking this function. ~0 means to get the latest sequence number and 0 means none to get. Change-Id: Ib7a03f3cf5594deeb4ad333cc59b47a6bddfd1ad Signed-off-by:
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Tom St Denis authored
Signed-off-by:
Tom St Denis <tom.stdenis@amd.com> Acked-by:
Chunming Zhou <david1.zhou@amd.com> Signed-off-by:
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Tom St Denis authored
Signed-off-by:
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Huang Rui authored
Rework in order to properly support suspend. Signed-off-by:
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Huang Rui authored
Rework in order to properly support suspend. Signed-off-by:
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Huang Rui authored
Rework in order to properly support suspend. Signed-off-by:
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Huang Rui authored
Rework in order to properly support suspend. Signed-off-by:
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Huang Rui authored
Needed for proper suspend support. Signed-off-by:
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Huang Rui authored
Rework in order to properly support suspend. Signed-off-by:
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Rex Zhu authored
Align the driver with the latest vbios structures. Signed-off-by:
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Dave Airlie authored
Merge tag 'drm-intel-next-fixes-2017-04-27' of git://anongit.freedesktop.org/git/drm-intel into drm-next drm/i915 and gvt fixes for drm-next/v4.12 * tag 'drm-intel-next-fixes-2017-04-27' of git://anongit.freedesktop.org/git/drm-intel: drm/i915: Confirm the request is still active before adding it to the await drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio drm/i915/selftests: Allocate inode/file dynamically drm/i915: Fix system hang with EI UP masked on Haswell drm/i915: checking for NULL instead of IS_ERR() in mock selftests drm/i915: Perform link quality check unconditionally during long pulse drm/i915: Fix use after free in lpe_audio_platdev_destroy() drm/i915: Use the right mapping_gfp_mask for final shmem allocation drm/i915: Make legacy cursor updates more unsynced drm/i915: Apply a cond_resched() to the saturated signaler drm/i915: Park the signaler before sleeping drm/i915/gvt: fix a bounds check in ring_id_to_context_switch_event() drm/i915/gvt: Fix PTE write flush for taking runtime pm properly drm/i915/gvt: remove some debug messages in scheduler timer handler drm/i915/gvt: add mmio init for virtual display drm/i915/gvt: use directly assignment for structure copying drm/i915/gvt: remove redundant ring id check which cause significant CPU misprediction drm/i915/gvt: remove redundant platform check for mocs load/restore drm/i915/gvt: Align render mmio list to cacheline drm/i915/gvt: cleanup some too chatty scheduler message
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git://people.freedesktop.org/~syeh/repos_linuxDave Airlie authored
trivial patch. * 'drm-vmwgfx-next' of git://people.freedesktop.org/~syeh/repos_linux: drm/vmwgfx: Convert macro to octal representation
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git://linux-arm.org/linux-ldDave Airlie authored
Latest updates on Mali DP, adding support for colour management, plane scaling and power management. (these have been in -next for a while). * 'for-upstream/mali-dp' of git://linux-arm.org/linux-ld: drm: mali-dp: use div_u64 for expensive 64-bit divisions drm: mali-dp: Check the mclk rate and allow up/down scaling drm: mali-dp: Enable image enhancement when scaling drm: mali-dp: Add plane upscaling support drm/mali-dp: Add core_id file to the sysfs interface drm: mali-dp: Add CTM support drm: mali-dp: enable gamma support drm: mali-dp: add malidp_crtc_state struct drm: mali-dp: add custom reset hook for planes drm: mali-dp: remove unused variable drm: mali-dp: add atomic_print_state for planes drm: mali-dp: Enable power management for the device. drm: mali-dp: Update the state of all planes before re-enabling active CRTCs.
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- 26 Apr, 2017 3 commits
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Arnd Bergmann authored
On 32-bit machines, we can't divide 64-bit integers: drivers/gpu/drm/arm/malidp_crtc.o: In function `malidp_crtc_atomic_check': malidp_crtc.c:(.text.malidp_crtc_atomic_check+0x3c0): undefined reference to `__aeabi_uldivmod' malidp_crtc.c:(.text.malidp_crtc_atomic_check+0x3dc): undefined reference to `__aeabi_uldivmod' This calls the div_u64 function explicitly instead. Fixes: 4cea4e9f6690 ("drm: mali-dp: Add plane upscaling support") Signed-off-by:Arnd Bergmann <arnd@arndb.de>
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Chris Wilson authored
Although we do check the completion-status of the request before actually adding a wait on it (either to its submit fence or its completion dma-fence), we currently do not check before adding it to the dependency lists. In fact, without checking for a completed request we may try to use the signaler after it has been retired and its dependency tree freed: [ 60.044057] BUG: KASAN: use-after-free in __list_add_valid+0x1d/0xd0 at addr ffff880348c9e6a0 [ 60.044118] Read of size 8 by task gem_exec_fence/530 [ 60.044164] CPU: 1 PID: 530 Comm: gem_exec_fence Tainted: G E 4.11.0-rc7+ #46 [ 60.044226] Hardware name: ��������������������������������� ���������������������������������/���������������������������������, BIOS RYBDWi35.86A.0246.2 [ 60.044290] Call Trace: [ 60.044337] dump_stack+0x4d/0x6a [ 60.044383] kasan_object_err+0x21/0x70 [ 60.044435] kasan_report+0x225/0x4e0 [ 60.044488] ? __list_add_valid+0x1d/0xd0 [ 60.044534] ? kasan_kmalloc+0xad/0xe0 [ 60.044587] __asan_load8+0x5e/0x70 [ 60.044639] __list_add_valid+0x1d/0xd0 [ 60.044788] __i915_priotree_add_dependency+0x67/0x130 [i915] [ 60.044895] i915_gem_request_await_request+0xa8/0x370 [i915] [ 60.044974] i915_gem_request_await_dma_fence+0x129/0x140 [i915] [ 60.045049] i915_gem_do_execbuffer.isra.37+0xb0a/0x26b0 [i915] [ 60.045077] ? save_stack+0xb1/0xd0 [ 60.045105] ? save_stack_trace+0x1b/0x20 [ 60.045132] ? save_stack+0x46/0xd0 [ 60.045158] ? kasan_kmalloc+0xad/0xe0 [ 60.045184] ? __kmalloc+0xd8/0x670 [ 60.045229] ? drm_ioctl+0x359/0x640 [drm] [ 60.045256] ? SyS_ioctl+0x41/0x70 [ 60.045330] ? i915_vma_move_to_active+0x540/0x540 [i915] [ 60.045360] ? tty_insert_flip_string_flags+0xa1/0xf0 [ 60.045387] ? tty_flip_buffer_push+0x63/0x70 [ 60.045414] ? remove_wait_queue+0xa9/0xc0 [ 60.045441] ? kasan_unpoison_shadow+0x35/0x50 [ 60.045467] ? kasan_kmalloc+0xad/0xe0 [ 60.045494] ? kasan_check_write+0x14/0x20 [ 60.045568] i915_gem_execbuffer2+0xdb/0x2a0 [i915] [ 60.045616] drm_ioctl+0x359/0x640 [drm] [ 60.045705] ? i915_gem_execbuffer+0x5a0/0x5a0 [i915] [ 60.045751] ? drm_version+0x150/0x150 [drm] [ 60.045778] ? compat_start_thread+0x60/0x60 [ 60.045805] ? plist_del+0xda/0x1a0 [ 60.045833] do_vfs_ioctl+0x12e/0x910 [ 60.045860] ? ioctl_preallocate+0x130/0x130 [ 60.045886] ? pci_mmcfg_check_reserved+0xc0/0xc0 [ 60.045913] ? vfs_write+0x196/0x240 [ 60.045939] ? __fget_light+0xa7/0xc0 [ 60.045965] SyS_ioctl+0x41/0x70 [ 60.045991] entry_SYSCALL_64_fastpath+0x17/0x98 [ 60.046017] RIP: 0033:0x7feb2baefc47 [ 60.046042] RSP: 002b:00007fff56d28e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.046075] RAX: ffffffffffffffda RBX: 00007fff56d290a8 RCX: 00007feb2baefc47 [ 60.046102] RDX: 00007fff56d29050 RSI: 00000000c0406469 RDI: 0000000000000003 [ 60.046129] RBP: 00007fff56d29050 R08: 000055ecc4cd27d0 R09: 00007feb2bda8600 [ 60.046154] R10: 0000000000000073 R11: 0000000000000246 R12: 00000000c0406469 [ 60.046177] R13: 0000000000000003 R14: 000000000000000f R15: 0000000000000099 [ 60.046203] Object at ffff880348c9e680, in cache i915_dependency size: 64 [ 60.046225] Allocated: [ 60.046246] PID = 530 [ 60.046269] save_stack_trace+0x1b/0x20 [ 60.046292] save_stack+0x46/0xd0 [ 60.046318] kasan_kmalloc+0xad/0xe0 [ 60.046343] kasan_slab_alloc+0x12/0x20 [ 60.046368] kmem_cache_alloc+0xab/0x650 [ 60.046445] i915_gem_request_await_request+0x88/0x370 [i915] [ 60.046559] i915_gem_request_await_dma_fence+0x129/0x140 [i915] [ 60.046705] i915_gem_do_execbuffer.isra.37+0xb0a/0x26b0 [i915] [ 60.046849] i915_gem_execbuffer2+0xdb/0x2a0 [i915] [ 60.046936] drm_ioctl+0x359/0x640 [drm] [ 60.046987] do_vfs_ioctl+0x12e/0x910 [ 60.047038] SyS_ioctl+0x41/0x70 [ 60.047090] entry_SYSCALL_64_fastpath+0x17/0x98 [ 60.047139] Freed: [ 60.047179] PID = 530 [ 60.047223] save_stack_trace+0x1b/0x20 [ 60.047269] save_stack+0x46/0xd0 [ 60.047317] kasan_slab_free+0x72/0xc0 [ 60.047366] kmem_cache_free+0x39/0x160 [ 60.047512] i915_gem_request_retire+0x83f/0x930 [i915] [ 60.047657] i915_gem_request_alloc+0x166/0x600 [i915] [ 60.047799] i915_gem_do_execbuffer.isra.37+0xad8/0x26b0 [i915] [ 60.047897] i915_gem_execbuffer2+0xdb/0x2a0 [i915] [ 60.047942] drm_ioctl+0x359/0x640 [drm] [ 60.047968] do_vfs_ioctl+0x12e/0x910 [ 60.047993] SyS_ioctl+0x41/0x70 [ 60.048019] entry_SYSCALL_64_fastpath+0x17/0x98 [ 60.048044] Memory state around the buggy address: [ 60.048066] ffff880348c9e580: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 60.048105] ffff880348c9e600: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 60.048138] >ffff880348c9e680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 60.048170] ^ [ 60.048191] ffff880348c9e700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 60.048225] ffff880348c9e780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc Note to hit the use-after-free requires us to be passed back a request via a fence-array, that is from explicit fencing accumulated into a sync-file fence-array. Fixes: 52e54209 ("drm/i915/scheduler: Record all dependencies upon request construction") Testcase: igt/gem_exec_fence/expired-history Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Michał Winiarski <michal.winiarski@intel.com> Reviewed-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170422081537.6468-1-chris@chris-wilson.co.uk (cherry picked from commit ade0b0c9) Signed-off-by:
Jani Nikula <jani.nikula@intel.com>
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Chris Wilson authored
The busy-spin, as the first stage of intel_wait_for_register(), is currently under suspicion for causing: [ 62.034926] NMI watchdog: Watchdog detected hard LOCKUP on cpu 1 [ 62.034928] Modules linked in: i2c_dev i915 intel_gtt drm_kms_helper prime_numbers [ 62.034932] CPU: 1 PID: 183 Comm: kworker/1:2 Not tainted 4.11.0-rc7+ #471 [ 62.034933] Hardware name: / , BIOS PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015 [ 62.034934] Workqueue: pm pm_runtime_work [ 62.034936] task: ffff880275a04ec0 task.stack: ffffc900002d8000 [ 62.034936] RIP: 0010:__intel_wait_for_register_fw+0x77/0x1a0 [i915] [ 62.034937] RSP: 0018:ffffc900002dbc38 EFLAGS: 00000082 [ 62.034939] RAX: ffffc90003530094 RBX: 0000000000130094 RCX: 0000000000000001 [ 62.034940] RDX: 00000000000000a1 RSI: ffff88027fd15e58 RDI: 0000000000000000 [ 62.034941] RBP: ffffc900002dbc78 R08: 0000000000000002 R09: 0000000000000000 [ 62.034942] R10: ffffc900002dbc18 R11: ffff880276429dd0 R12: ffff8802707c0000 [ 62.034943] R13: 00000000000000a0 R14: 0000000000000000 R15: 00000000fffefc10 [ 62.034945] FS: 0000000000000000(0000) GS:ffff88027fd00000(0000) knlGS:0000000000000000 [ 62.034945] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.034947] CR2: 00007ffd3cd98ff8 CR3: 0000000274c19000 CR4: 00000000001006e0 [ 62.034947] Call Trace: [ 62.034948] intel_wait_for_register+0x77/0x140 [i915] [ 62.034949] vlv_suspend_complete+0x23/0x5b0 [i915] [ 62.034950] intel_runtime_suspend+0x16c/0x2a0 [i915] [ 62.034950] pci_pm_runtime_suspend+0x50/0x180 [ 62.034951] ? pci_pm_runtime_resume+0xa0/0xa0 [ 62.034952] __rpm_callback+0xc5/0x210 [ 62.034953] rpm_callback+0x1f/0x80 [ 62.034953] ? pci_pm_runtime_resume+0xa0/0xa0 [ 62.034954] rpm_suspend+0x118/0x580 [ 62.034955] pm_runtime_work+0x64/0x90 [ 62.034956] process_one_work+0x1bb/0x3e0 [ 62.034956] worker_thread+0x46/0x4f0 [ 62.034957] ? __schedule+0x18b/0x610 [ 62.034958] kthread+0xff/0x140 [ 62.034958] ? process_one_work+0x3e0/0x3e0 [ 62.034959] ? kthread_create_on_node+ and related hard lockups in CI for byt and bsw. Note this effectively reverts commits 41ce405e and b2736695 ("drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()") v2: Convert bool allow into a u32 mask for clarity and repeat the comment on vlv rc6 timing to justify the 3ms timeout used for the wait (Ville) Fixes: 41ce405e ("drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()") Fixes: b2736695 ("drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100718Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170421135815.11897-1-chris@chris-wilson.co.ukTested-by:
Tomi Sarvela <tomi.p.sarvela@intel.com> (cherry picked from commit 3dd14c04) Signed-off-by:
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