Created attachment 301820 [details] 5.19 dmesg with warning, GVT-g doesn't work I'm using Intel GVT-g actively and it was very stable on older kernels including 5.18.x. But after updating to 5.19 it doesn't work anymore. I'm sure that it isn't related to hardware change / bios update. It still works if I reboot to older 5.18 kernel. I'm getting followed in dmesg: [ 92.987534] ------------[ cut here ]------------ [ 92.987538] assign a handler to a non-tracked mmio 4ab8 [ 92.987555] WARNING: CPU: 0 PID: 3660 at drivers/gpu/drm/i915/gvt/handlers.c:124 setup_mmio_info.constprop.0+0xd5/0x100 [kvmgt]
Created attachment 301821 [details] 5.18 dmesg after starting qemu with GVT-g
[ 92.987534] ------------[ cut here ]------------ [ 92.987538] assign a handler to a non-tracked mmio 4ab8 [ 92.987555] WARNING: CPU: 0 PID: 3660 at drivers/gpu/drm/i915/gvt/handlers.c:124 setup_mmio_info.constprop.0+0xd5/0x100 [kvmgt] [ 92.987586] Modules linked in: kvmgt(+) vfio_iommu_type1 vfio mdev ctr ccm z3fold lz4 lz4_compress snd_seq_dummy snd_hrtimer snd_seq snd_seq_device xt_TCPMSS xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT xt_tcpudp nft_compat nf_nat_tftp nf_conntrack_netbios_ns nf_conntrack_broadcast nft_objref wireguard curve25519_x86_64 libchacha20poly1305 bridge chacha_x86_64 poly1305_x86_64 libcurve25519_generic libchacha ip6_udp_tunnel udp_tunnel stp llc nf_conntrack_tftp nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib rfcomm cmac algif_hash nft_reject_inet nf_reject_ipv4 algif_skcipher nf_reject_ipv6 af_alg nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink qrtr uinput bnep snd_ctl_led snd_soc_skl_hda_dsp snd_soc_intel_hda_dsp_common snd_soc_hdac_hdmi snd_sof_probes sunrpc binfmt_misc snd_hda_codec_hdmi snd_hda_codec_realtek nls_ascii nls_cp437 snd_hda_codec_generic vfat snd_soc_dmic ledtrig_audio fat snd_sof_pci_intel_cnl [ 92.987660] snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_soc_hdac_hda snd_hda_ext_core ext4 snd_soc_acpi_intel_match snd_soc_acpi mbcache joydev snd_soc_core jbd2 snd_compress btusb x86_pkg_temp_thermal intel_powerclamp soundwire_bus coretemp btrtl hid_multitouch btbcm snd_hda_intel iTCO_wdt intel_pmc_bxt ee1004 btintel iTCO_vendor_support mei_wdt hid_generic iwlmvm kvm_intel snd_intel_dspcfg btmtk watchdog mei_hdcp intel_rapl_msr snd_intel_sdw_acpi bluetooth mac80211 snd_hda_codec kvm libarc4 snd_hda_core snd_hwdep jitterentropy_rng irqbypass snd_pcm iwlwifi uvcvideo crc32_pclmul sha512_ssse3 videobuf2_vmalloc sha512_generic snd_timer videobuf2_memops videobuf2_v4l2 processor_thermal_device_pci_legacy snd processor_thermal_device videobuf2_common ghash_clmulni_intel i2c_i801 drbg processor_thermal_rfim hp_wmi rapl intel_cstate intel_uncore efi_pstore platform_profile [ 92.987731] wmi_bmof soundcore i2c_smbus videodev ansi_cprng mei_me processor_thermal_mbox ucsi_acpi processor_thermal_rapl intel_rapl_common typec_ucsi ecdh_generic intel_lpss_pci cfg80211 mei int3403_thermal soc_button_array ecc roles int340x_thermal_zone intel_lpss mc i2c_hid_acpi crc16 rfkill idma64 intel_pch_thermal typec intel_soc_dts_iosf battery i2c_hid int3400_thermal acpi_thermal_rel intel_hid intel_pmc_core ac sparse_keymap acpi_pad button msr i2c_dev parport_pc ppdev lp parport fuse configfs ip_tables x_tables autofs4 dm_crypt dm_mod efivarfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear md_mod r8152 mii btrfs blake2b_generic libcrc32c crc32c_generic xor raid6_pq zstd_compress usbhid hid uas usb_storage scsi_mod scsi_common i915 i2c_algo_bit drm_buddy crc32c_intel drm_display_helper nvme nvme_core drm_kms_helper t10_pi cec aesni_intel rc_core ttm xhci_pci crc64_rocksoft crc64 crc_t10dif intel_wmi_thunderbolt xhci_hcd [ 92.987819] crypto_simd drm evdev crct10dif_generic thunderbolt crct10dif_pclmul cryptd serio_raw usbcore crct10dif_common usb_common wmi video [ 92.987832] CPU: 0 PID: 3660 Comm: modprobe Tainted: G U 5.19.0-1-amd64 #1 Debian 5.19.6-1 [ 92.987836] Hardware name: HP HP EliteBook 850 G7 Notebook PC/8724, BIOS S73 Ver. 01.09.00 04/07/2022 [ 92.987838] RIP: 0010:setup_mmio_info.constprop.0+0xd5/0x100 [kvmgt] [ 92.987863] Code: ef e4 e6 dd 78 39 f5 77 a2 31 c0 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 c7 c7 a0 c9 8c c1 e8 ef 25 2c c1 <0f> 0b 48 83 c4 08 b8 ed ff ff ff 5b 5d 41 5c 41 5d 41 5e 41 5f c3 [ 92.987865] RSP: 0018:ffffb801c467fca8 EFLAGS: 00010286 [ 92.987868] RAX: 0000000000000000 RBX: ffff8e94a7a88000 RCX: 0000000000000000 [ 92.987870] RDX: 0000000000000001 RSI: ffffffff8336ed69 RDI: 00000000ffffffff [ 92.987873] RBP: 0000000000004abc R08: 0000000000000000 R09: 00000000ffffefff [ 92.987874] R10: ffffb801c467fb48 R11: ffffffff83ad1f08 R12: 0000000000000000 [ 92.987876] R13: 0000000000000000 R14: 0000000000000008 R15: 0000000000000000 [ 92.987878] FS: 00007fed010be440(0000) GS:ffff8e99ffe00000(0000) knlGS:0000000000000000 [ 92.987881] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.987883] CR2: 000055dd95eb9030 CR3: 000000035e690004 CR4: 00000000003706f0 [ 92.987885] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.987886] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.987888] Call Trace: [ 92.987891] <TASK> [ 92.987894] ? bxt_gt_disp_pwron_write+0x70/0x70 [kvmgt] [ 92.987913] init_skl_mmio_info+0x153a/0x15b0 [kvmgt] [ 92.987926] intel_gvt_setup_mmio_info+0x316f/0x3560 [kvmgt] [ 92.987936] ? gen9_dbuf_ctl_mmio_write+0x40/0x40 [kvmgt] [ 92.987946] intel_gvt_init_device+0x10a/0x3f0 [kvmgt] [ 92.987958] intel_gvt_init_device.part.0+0xe7/0x1c0 [i915] [ 92.988058] ? intel_vgt_balloon+0x230/0x230 [i915] [ 92.988124] ? 0xffffffffc18f7000 [ 92.988127] intel_gvt_set_ops+0x7f/0xb0 [i915] [ 92.988187] kvmgt_init+0x13/0x1000 [kvmgt] [ 92.988200] do_one_initcall+0x41/0x200 [ 92.988204] ? kmem_cache_alloc_trace+0x177/0x2a0 [ 92.988208] do_init_module+0x4c/0x200 [ 92.988211] __do_sys_finit_module+0xb4/0x130 [ 92.988214] do_syscall_64+0x38/0xc0 [ 92.988217] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 92.988220] RIP: 0033:0x7fed011c6ee9 [ 92.988222] Code: 08 44 89 e0 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d f7 ee 0e 00 f7 d8 64 89 01 48 [ 92.988223] RSP: 002b:00007ffe5d5bb848 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 92.988225] RAX: ffffffffffffffda RBX: 000055ea7aa730b0 RCX: 00007fed011c6ee9 [ 92.988226] RDX: 0000000000000000 RSI: 000055ea799924d0 RDI: 0000000000000005 [ 92.988227] RBP: 000055ea799924d0 R08: 0000000000000000 R09: 000055ea7aa77760 [ 92.988228] R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000040000 [ 92.988229] R13: 0000000000000000 R14: 000055ea7aa731e0 R15: 0000000000000000 [ 92.988231] </TASK> [ 92.988232] ---[ end trace 0000000000000000 ]---
Does this still happen with the latest 5.19.y version? There was a fix recently that might help: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.19.y&id=2914e46f5b0399279ad56e3c0247a2da72fa0f21
This patch fixes it for me. Sorry for not checking latest 5.19.y before reporting.