[Intel-gfx] 5.14-rc2 warnings with kvmgvt

Lucas De Marchi lucas.demarchi at intel.com
Thu Jul 22 05:55:23 UTC 2021


On Thu, Jul 22, 2021 at 05:24:30AM +0100, Christoph Hellwig wrote:
>On Wed, Jul 21, 2021 at 05:18:18PM -0400, Rodrigo Vivi wrote:
>> could you please try this small patch?
>
>I had to hand apply it as it wa corruped to due to cut off context.
>
>It fixes one of the warnings, new output below:
>
>[    4.182820] i915 0000:00:04.0: [drm] Virtual GPU for Intel GVT-g detected.
>[    4.184076] i915 0000:00:04.0: [drm] VT-d active for gfx access
>[    4.185199] i915 0000:00:04.0: [drm] iGVT-g active, disabling use of stolen memory
>[    4.207889] i915 0000:00:04.0: BAR 6: can't assign [??? 0x00000000 flags 0x20000000] (bogus a)
>[    4.210062] i915 0000:00:04.0: [drm] Failed to find VBIOS tables (VBT)
>[    4.212256] i915 0000:00:04.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owm
>[    4.214447] i915 0000:00:04.0: Direct firmware load for i915/kbl_dmc_ver1_04.bin failed with 2
>[    4.215447] i915 0000:00:04.0: [drm] Failed to load DMC firmware i915/kbl_dmc_ver1_04.bin. Di.
>[    4.216643] i915 0000:00:04.0: [drm] DMC firmware homepage: https://git.kernel.org/pub/scm/li5
>[    4.227760] i915 0000:00:04.0: [drm] failed to retrieve link info, disabling eDP
>[    4.229706] ------------[ cut here ]------------
>[    4.230204] Missing case (port == 5)

humn... PORT_F. KBL doesn't have PORT_F. We decided to keep the handling
of DISPLAY_VER == 10 and DISPLAY_VER == 9 together and trust the VBT,
but when the VBT is not present, DDI F will get added unconditio.

maybe best thing to do is to split that

-------8<-------------
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index c274bfb8e549..44cad63e20fb 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -11371,6 +11371,13 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
  		intel_ddi_init(dev_priv, PORT_E);
  		intel_ddi_init(dev_priv, PORT_F);
  		icl_dsi_init(dev_priv);
+	} else if (DISPLAY_VER(dev_priv) == 10) {
+		intel_ddi_init(dev_priv, PORT_A);
+		intel_ddi_init(dev_priv, PORT_B);
+		intel_ddi_init(dev_priv, PORT_C);
+		intel_ddi_init(dev_priv, PORT_D);
+		intel_ddi_init(dev_priv, PORT_E);
+		intel_ddi_init(dev_priv, PORT_F);
  	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
  		intel_ddi_init(dev_priv, PORT_A);
  		intel_ddi_init(dev_priv, PORT_B);
@@ -11382,7 +11389,6 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
  		intel_ddi_init(dev_priv, PORT_C);
  		intel_ddi_init(dev_priv, PORT_D);
  		intel_ddi_init(dev_priv, PORT_E);
-		intel_ddi_init(dev_priv, PORT_F);
  	} else if (HAS_DDI(dev_priv)) {
  		u32 found;
  
-------8<-------------

thanks
Lucas De Marchi

>[    4.230652] WARNING: CPU: 3 PID: 1 at drivers/gpu/drm/i915/display/intel_hdmi.c:2740 intel_hd0
>[    4.231815] Modules linked in:
>[    4.232146] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 5.14.0-rc2+ #40
>[    4.232826] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014
>[    4.233706] RIP: 0010:intel_hdmi_init_connector+0x7cf/0x880
>[    4.234330] Code: b6 fb 45 89 fb e9 bd fb ff ff 49 63 d7 48 c7 c6 da 67 18 83 44 89 44 24 10 4
>[    4.236289] RSP: 0000:ffffc90000013be8 EFLAGS: 00010282
>[    4.236949] RAX: 0000000000000000 RBX: ffff888104cda000 RCX: 0000000000000000
>[    4.237703] RDX: 0000000000000001 RSI: ffffffff831a7617 RDI: 00000000ffffffff
>[    4.238499] RBP: ffff888104c01000 R08: 0000000000000001 R09: 0000000000000001
>[    4.239240] R10: 00000000ffff0000 R11: 3fffffffffffffff R12: ffff8881054c0000
>[    4.240112] R13: 0000000000000005 R14: ffff8881054c0000 R15: 0000000000000005
>[    4.240963] FS:  0000000000000000(0000) GS:ffff88813bd80000(0000) knlGS:0000000000000000
>[    4.241856] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[    4.242533] CR2: 0000000000000000 CR3: 0000000003462000 CR4: 00000000000006e0
>[    4.243437] Call Trace:
>[    4.243754]  intel_ddi_init+0x88d/0xc30
>[    4.244216]  intel_modeset_init_nogem+0xdab/0x1310
>[    4.244792]  ? intel_irq_postinstall+0x1aa/0x520
>[    4.245372]  i915_driver_probe+0x695/0xd30
>[    4.245908]  ? _raw_spin_unlock_irqrestore+0x33/0x50
>[    4.246507]  pci_device_probe+0xcd/0x140
>[    4.246933]  really_probe.part.0+0x99/0x270
>[    4.247421]  __driver_probe_device+0x8b/0x120
>[    4.247887]  driver_probe_device+0x19/0x90
>[    4.248328]  __driver_attach+0x79/0x120
>[    4.248740]  ? __device_attach_driver+0x90/0x90
>[    4.249225]  bus_for_each_dev+0x78/0xc0
>[    4.249637]  bus_add_driver+0x109/0x1b0
>[    4.250051]  driver_register+0x86/0xd0
>[    4.250512]  ? ttm_init+0x18/0x18
>[    4.250884]  i915_init+0x58/0x72
>[    4.251234]  do_one_initcall+0x56/0x2e0
>[    4.251644]  ? rcu_read_lock_sched_held+0x3a/0x70
>[    4.252150]  kernel_init_freeable+0x186/0x1ce
>[    4.252625]  ? rest_init+0x250/0x250
>[    4.253032]  kernel_init+0x11/0x110
>[    4.253464]  ret_from_fork+0x22/0x30
>[    4.253864] irq event stamp: 8201065
>[    4.254308] hardirqs last  enabled at (8201075): [<ffffffff811acba3>] console_unlock+0x323/0x0
>[    4.255377] hardirqs last disabled at (8201082): [<ffffffff811acc50>] console_unlock+0x3d0/0x0
>[    4.256325] softirqs last  enabled at (8200736): [<ffffffff8113f3c8>] irq_exit_rcu+0x108/0x140
>[    4.257234] softirqs last disabled at (8200695): [<ffffffff8113f3c8>] irq_exit_rcu+0x108/0x140
>[    4.258142] ---[ end trace 2e5275f4e68f236b ]---
>[    4.259727] i915 0000:00:04.0: [drm] [ENCODER:94:DDI B/PHY B] is disabled/in DSI mode with ant
>[    4.260917] i915 0000:00:04.0: [drm] [ENCODER:110:DDI C/PHY C] is disabled/in DSI mode with at
>[    4.262086] i915 0000:00:04.0: [drm] [ENCODER:130:DDI F/PHY F] is disabled/in DSI mode with at
>[    4.263764] i915 0000:00:04.0: [drm] VGT ballooning configuration:
>[    4.264418] i915 0000:00:04.0: [drm] Mappable graphic memory: base 0x2180000 size 65536KiB
>[    4.265284] i915 0000:00:04.0: [drm] Unmappable graphic memory: base 0x10000000 size 393216KiB
>[    4.266188] i915 0000:00:04.0: [drm] balloon space: range [ 0x28000000 - 0x100000000 ] 353894.
>[    4.267159] i915 0000:00:04.0: [drm] balloon space: range [ 0x0 - 0x2180000
>] 34304 KiB.
>[    4.268025] i915 0000:00:04.0: [drm] balloon space: range [ 0x6180000 - 0x10000000 ] 162304 K.
>[    4.268968] i915 0000:00:04.0: [drm] VGT balloon successfully
>[    4.888116] i915 0000:00:04.0: [drm] *ERROR* Failed to disable SAGV (-110)
>[    4.908031] [drm] Initialized i915 1.6.0 20201103 for 0000:00:04.0 on minor
>0
>
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