[Intel-gfx] [PATCH] drm/i915/bdw: Fix GEN8 GTT size calculation

[David Woodhouse]

On Mon, 2014-03-17 at 16:17 +0000, David Woodhouse wrote:
> 
> Can't tell though, because my machine is still dying in an endless
> stream of
> [  199.647850] [drm:intel_set_cpu_fifo_underrun_reporting] *ERROR*
> Interrupt arrived before CRTCs were setup up

Except when the failure mode is different...

[   24.143180] ------------[ cut here ]------------
[   24.150433] WARNING: CPU: 1 PID: 161 at kernel/watchdog.c:245 watchdog_overflow_callback+0x9c/0xd0()
[   24.162945] Watchdog detected hard LOCKUP on cpu 1
[   24.168206] Modules linked in: i915(+) i2c_algo_bit drm_kms_helper drm i2c_core video
[   24.181743] CPU: 1 PID: 161 Comm: systemd-udevd Not tainted 3.14.0-rc5+ #54
[   24.191833] Hardware name: Intel Corporation Broadwell Client platform/WhiteTip Mountain 1, BIOS BDW-E2R1.86C.0053.R02.131213
[   24.208364]  0000000000000009 ffff88014e446c20 ffffffff816b5c48 ffff88014e446c68
[   24.219026]  ffff88014e446c58 ffffffff81085e9d ffff880147cf0000 0000000000000000
[   24.229676]  ffff88014e446d88 0000000000000000 ffff88014e446ef8 ffff88014e446cb8
[   24.240298] Call Trace:
[   24.245251]  <NMI>  [<ffffffff816b5c48>] dump_stack+0x45/0x56
[   24.254028]  [<ffffffff81085e9d>] warn_slowpath_common+0x7d/0xa0
[   24.263071]  [<ffffffff81085f0c>] warn_slowpath_fmt+0x4c/0x50
[   24.271802]  [<ffffffff81125af0>] ? restart_watchdog_hrtimer+0x50/0x50
[   24.281352]  [<ffffffff81125b8c>] watchdog_overflow_callback+0x9c/0xd0
[   24.290979]  [<ffffffff8115d55e>] __perf_event_overflow+0x8e/0x240
[   24.300211]  [<ffffffff81029e68>] ? x86_perf_event_set_period+0xe8/0x150
[   24.310053]  [<ffffffff8115e024>] perf_event_overflow+0x14/0x20
[   24.319014]  [<ffffffff8103123d>] intel_pmu_handle_irq+0x1cd/0x3c0
[   24.328264]  [<ffffffff816be02b>] perf_event_nmi_handler+0x2b/0x50
[   24.337519]  [<ffffffff816bd878>] nmi_handle.isra.3+0x88/0x180
[   24.346369]  [<ffffffff816bdad9>] do_nmi+0x169/0x310
[   24.354215]  [<ffffffff816bceb1>] end_repeat_nmi+0x1e/0x2e
[   24.362660]  [<ffffffff8119ffaf>] ? alloc_vmap_area+0x6f/0x310
[   24.371525]  [<ffffffffa00f1e2b>] ? __gen6_gt_force_wake_mt_get+0x7b/0x150 [i915]
[   24.382215]  [<ffffffffa00f1e2b>] ? __gen6_gt_force_wake_mt_get+0x7b/0x150 [i915]
[   24.392935]  [<ffffffffa00f1e2b>] ? __gen6_gt_force_wake_mt_get+0x7b/0x150 [i915]
[   24.403590]  <<EOE>>  [<ffffffffa00f3c5c>] gen8_write32+0x10c/0x120 [i915]
[   24.413655]  [<ffffffffa00a2ad7>] gen8_gmch_probe+0xe7/0x190 [i915]
[   24.422984]  [<ffffffffa00a3fb2>] i915_gem_gtt_init+0x62/0x200 [i915]
[   24.432504]  [<ffffffffa00889dd>] i915_driver_load+0x43d/0xe10 [i915]
[   24.442000]  [<ffffffffa0026765>] ? drm_get_minor+0x1a5/0x200 [drm]
[   24.451322]  [<ffffffffa002683b>] drm_dev_register+0x7b/0x160 [drm]
[   24.460620]  [<ffffffffa0028cc0>] drm_get_pci_dev+0xa0/0x220 [drm]
[   24.469827]  [<ffffffffa00856fb>] i915_pci_probe+0x3b/0x60 [i915]
[   24.478917]  [<ffffffff813722a5>] local_pci_probe+0x45/0xa0
[   24.487382]  [<ffffffff81373621>] pci_device_probe+0xd1/0x130
[   24.496072]  [<ffffffff8143c5c5>] driver_probe_device+0x125/0x3a0
[   24.505141]  [<ffffffff8143c913>] __driver_attach+0x93/0xa0
[   24.513631]  [<ffffffff8143c880>] ? __device_attach+0x40/0x40
[   24.522301]  [<ffffffff8143a533>] bus_for_each_dev+0x63/0xa0
[   24.530871]  [<ffffffff8143bf7e>] driver_attach+0x1e/0x20
[   24.539114]  [<ffffffff8143bb60>] bus_add_driver+0x180/0x250
[   24.547625]  [<ffffffffa0147000>] ? 0xffffffffa0146fff
[   24.555554]  [<ffffffff8143cf44>] driver_register+0x64/0xf0
[   24.563824]  [<ffffffffa0147000>] ? 0xffffffffa0146fff
[   24.571716]  [<ffffffff81371c4b>] __pci_register_driver+0x4b/0x50
[   24.580701]  [<ffffffffa0028f5a>] drm_pci_init+0x11a/0x130 [drm]
[   24.589447]  [<ffffffffa0147000>] ? 0xffffffffa0146fff
[   24.597330]  [<ffffffffa014706a>] i915_init+0x6a/0x6c [i915]
[   24.605806]  [<ffffffff81002142>] do_one_initcall+0xd2/0x180
[   24.614278]  [<ffffffff810573a3>] ? set_memory_nx+0x43/0x50
[   24.622651]  [<ffffffff810fbe1b>] load_module+0x1e0b/0x25a0
[   24.631014]  [<ffffffff810f77a0>] ? store_uevent+0x40/0x40
[   24.639285]  [<ffffffff810f828a>] ? copy_module_from_fd.isra.47+0x12a/0x190
[   24.649242]  [<ffffffff810fc726>] SyS_finit_module+0x86/0xb0
[   24.657721]  [<ffffffff816c50e9>] system_call_fastpath+0x16/0x1b
[   24.666590] ---[ end trace d4228967fcb7ae4a ]---


-- 
dwmw2
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