On Tuesday 13 September 2016 21:38:01 Alex Williamson wrote:
> [adding the list back]
>
> On Tue, Sep 13, 2016 at 9:17 PM, fulaiyang <fulaiy...@163.com> wrote:
> > hello,
> >
> > my kernel does include simplefb:CONFIG_FB_SIMPLE=y.QEMU does not
> >
> > print any messages when started but the top tree show that qemu'cpu usage
> > is always about 100%.I have confirmed that the windows 7 os does not
> > boot.I
> > don't know how I can get other qemu information,could you tell me? thanks.
> >
> > PID USER PR NI VIRT RES SHR S *%CPU* %MEM TIME+
> >
> > COMMAND
> >
> > 9542 root 20 0 2768476 2.028g 11848 S * 99.7* 53.3 3:48.82
> >
> > qemu-system-x86
>
> Try removing the modprobe.blacklist and video options from your kernel
> command line (the unsafe interrupts thing isn't necessary on your system
> either). After boot, IGD should be bound to i915. Unbind it, bind to
> vfio-pci, and try QEMU again. Since you have simplefb in your kernel, I
> don't trust that it's not claiming device resources as you're using it now.
Hi Alex, Yang.
I've been toying around with this case again, and it seems I got some
output that can be of any help. I think it points that i915 is reluctant to
free the resources, but it can highlight something else to your eyes.
[ 225.155202] ------------[ cut here ]------------
[ 225.155217] WARNING: CPU: 2 PID: 7101 at drivers/gpu/drm/drm_crtc.c:5939
drm_mode_config_cleanup+0x20f/0x230 [drm]
[ 225.155218] Modules linked in: vfio_pci vfio_iommu_type1 vfio_virqfd vfio
drbg
ansi_cprng ctr ccm bridge stp llc af_packet ipt_MASQUERADE
nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4
nf_defrag_ipv4 iptable_filter ip_tables nf_conntrack_ipv6 nf_defrag_ipv6
xt_conntrack nf_conntrack ip6table_filter ip6_tables snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic binfmt_misc i915 arc4 iwlmvm
mac80211 loop i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt
fb_sys_fops drm x86_pkg_temp_thermal intel_powerclamp iwlwifi coretemp
kvm_intel kvm joydev snd_hda_intel uvcvideo mousedev snd_hda_codec btusb
cfg80211 btrtl videobuf2_vmalloc videobuf2_memops btbcm btintel snd_hwdep
videobuf2_v4l2 rtsx_pci_sdmmc videobuf2_core bluetooth mmc_core videodev
snd_hda_core
[ 225.155245] snd_pcsp rtsx_pci_ms snd_pcm memstick media irqbypass
crc32c_intel snd_timer psmouse ghash_clmulni_intel snd i2c_hid efi_pstore evdev
wmi video input_leds efivars i2c_i801 serio_raw rtsx_pci i2c_core backlight
intel_lpss_acpi intel_lpss thermal tpm_crb soundcore mfd_core button battery
ac acpi_pad efivarfs unix dm_zero dm_thin_pool dm_persistent_data dm_bio_prison
dm_service_time dm_round_robin dm_queue_length dm_multipath dm_log_userspace
cn dm_flakey dm_delay xts aesni_intel glue_helper lrw gf128mul ablk_helper
cryptd aes_x86_64 cbc sha256_generic scsi_transport_iscsi r8169 mii fuse nfs
lockd grace sunrpc fscache ext4 jbd2 mbcache multipath linear raid10 raid1
raid0 dm_raid raid456 libcrc32c md_mod async_raid6_recov async_memcpy async_pq
async_xor xor async_tx raid6_pq dm_snapshot
[ 225.155275] dm_bufio dm_crypt dm_mirror dm_region_hash dm_log dm_mod
hid_generic usbhid xhci_pci xhci_hcd ohci_hcd uhci_hcd usb_storage ehci_pci
ehci_hcd usbcore usb_common scsi_transport_fc sr_mod cdrom sg sd_mod ata_piix
ahci libahci sata_sx4 pata_oldpiix
[ 225.155286] CPU: 2 PID: 7101 Comm: vfio-bind Not tainted 4.7.2 #5
[ 225.155287] Hardware name: PC Specialist Limited N24_25JU/N24_25JU, BIOS
5.11 12/14/2015
[ 225.155288] 0000000000000000 ffff88035a43fc08 ffffffff812d18c2
0000000000000000
[ 225.155290] 0000000000000000 ffff88035a43fc48 ffffffff8105b211
00001733a0928530
[ 225.155292] ffff88035bfbe498 ffff88035bfbe000 ffff88035bfbe340
ffff88035e65bb80
[ 225.155293] Call Trace:
[ 225.155297] [<ffffffff812d18c2>] dump_stack+0x67/0x95
[ 225.155299] [<ffffffff8105b211>] __warn+0xd1/0xf0
[ 225.155301] [<ffffffff8105b2fd>] warn_slowpath_null+0x1d/0x20
[ 225.155310] [<ffffffffa09284bf>] drm_mode_config_cleanup+0x20f/0x230 [drm]
[ 225.155331] [<ffffffffa0bdb630>] intel_modeset_cleanup+0x80/0xa0 [i915]
[ 225.155347] [<ffffffffa0c15dd4>] i915_driver_unload+0x74/0x1d0 [i915]
[ 225.155354] [<ffffffffa091f329>] drm_dev_unregister+0x29/0xb0 [drm]
[ 225.155361] [<ffffffffa091f923>] drm_put_dev+0x23/0x60 [drm]
[ 225.155370] [<ffffffffa0b51cc5>] i915_pci_remove+0x15/0x20 [i915]
[ 225.155372] [<ffffffff8131a679>] pci_device_remove+0x39/0xc0
[ 225.155375] [<ffffffff813fe4ea>] __device_release_driver+0x9a/0x140
[ 225.155376] [<ffffffff813fe5b3>] device_release_driver+0x23/0x30
[ 225.155377] [<ffffffff813fc397>] unbind_store+0xe7/0x140
[ 225.155379] [<ffffffff813fb9e5>] drv_attr_store+0x25/0x30
[ 225.155381] [<ffffffff8124bf67>] sysfs_kf_write+0x37/0x40
[ 225.155382] [<ffffffff8124b498>] kernfs_fop_write+0x118/0x190
[ 225.155384] [<ffffffff811d2988>] __vfs_write+0x28/0x120
[ 225.155386] [<ffffffff812700cd>] ? security_file_permission+0x3d/0xc0
[ 225.155388] [<ffffffff810a3642>] ? percpu_down_read+0x12/0x60
[ 225.155390] [<ffffffff811d3668>] vfs_write+0xb8/0x1a0
[ 225.155391] [<ffffffff811d49f6>] SyS_write+0x46/0xb0
[ 225.155393] [<ffffffff81002cf1>] do_syscall_64+0x61/0x110
[ 225.155395] [<ffffffff815b5a95>] entry_SYSCALL64_slow_path+0x25/0x25
[ 225.155396] ---[ end trace 4631a3679da5de09 ]---
[ 225.157080] ------------[ cut here ]------------
[ 225.157094] WARNING: CPU: 2 PID: 7101 at drivers/gpu/drm/drm_mm.c:773
drm_mm_takedown+0x31/0x40 [drm]
[ 225.157095] Memory manager not clean during takedown.
[ 225.157096] Modules linked in: vfio_pci vfio_iommu_type1 vfio_virqfd vfio
drbg
ansi_cprng ctr ccm bridge stp llc af_packet ipt_MASQUERADE
nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4
nf_defrag_ipv4 iptable_filter ip_tables nf_conntrack_ipv6 nf_defrag_ipv6
xt_conntrack nf_conntrack ip6table_filter ip6_tables snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic binfmt_misc i915 arc4 iwlmvm
mac80211 loop i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt
fb_sys_fops drm x86_pkg_temp_thermal intel_powerclamp iwlwifi coretemp
kvm_intel kvm joydev snd_hda_intel uvcvideo mousedev snd_hda_codec btusb
cfg80211 btrtl videobuf2_vmalloc videobuf2_memops btbcm btintel snd_hwdep
videobuf2_v4l2 rtsx_pci_sdmmc videobuf2_core bluetooth mmc_core videodev
snd_hda_core
[ 225.157123] snd_pcsp rtsx_pci_ms snd_pcm memstick media irqbypass
crc32c_intel snd_timer psmouse ghash_clmulni_intel snd i2c_hid efi_pstore evdev
wmi video input_leds efivars i2c_i801 serio_raw rtsx_pci i2c_core backlight
intel_lpss_acpi intel_lpss thermal tpm_crb soundcore mfd_core button battery
ac acpi_pad efivarfs unix dm_zero dm_thin_pool dm_persistent_data dm_bio_prison
dm_service_time dm_round_robin dm_queue_length dm_multipath dm_log_userspace
cn dm_flakey dm_delay xts aesni_intel glue_helper lrw gf128mul ablk_helper
cryptd aes_x86_64 cbc sha256_generic scsi_transport_iscsi r8169 mii fuse nfs
lockd grace sunrpc fscache ext4 jbd2 mbcache multipath linear raid10 raid1
raid0 dm_raid raid456 libcrc32c md_mod async_raid6_recov async_memcpy async_pq
async_xor xor async_tx raid6_pq dm_snapshot
[ 225.157168] dm_bufio dm_crypt dm_mirror dm_region_hash dm_log dm_mod
hid_generic usbhid xhci_pci xhci_hcd ohci_hcd uhci_hcd usb_storage ehci_pci
ehci_hcd usbcore usb_common scsi_transport_fc sr_mod cdrom sg sd_mod ata_piix
ahci libahci sata_sx4 pata_oldpiix
[ 225.157179] CPU: 2 PID: 7101 Comm: vfio-bind Tainted: G W 4.7.2
#5
[ 225.157179] Hardware name: PC Specialist Limited N24_25JU/N24_25JU, BIOS
5.11 12/14/2015
[ 225.157181] 0000000000000000 ffff88035a43fba8 ffffffff812d18c2
ffff88035a43fbf8
[ 225.157183] 0000000000000000 ffff88035a43fbe8 ffffffff8105b211
0000030500000000
[ 225.157185] ffff88035f1a0000 ffff88035bfbe000 ffff88035bfbe060
ffff88035e65bb80
[ 225.157187] Call Trace:
[ 225.157190] [<ffffffff812d18c2>] dump_stack+0x67/0x95
[ 225.157192] [<ffffffff8105b211>] __warn+0xd1/0xf0
[ 225.157194] [<ffffffff8105b27f>] warn_slowpath_fmt+0x4f/0x60
[ 225.157196] [<ffffffff8104c197>] ? iounmap+0x87/0xb0
[ 225.157198] [<ffffffff8104c197>] ? iounmap+0x87/0xb0
[ 225.157206] [<ffffffffa0922bb1>] drm_mm_takedown+0x31/0x40 [drm]
[ 225.157223] [<ffffffffa0b93ac3>] i915_gem_cleanup_stolen+0x23/0x30 [i915]
[ 225.157235] [<ffffffffa0b88c60>] i915_ggtt_cleanup_hw+0x30/0x90 [i915]
[ 225.157251] [<ffffffffa0c14003>] i915_driver_cleanup_hw+0x53/0x60 [i915]
[ 225.157267] [<ffffffffa0c15e9c>] i915_driver_unload+0x13c/0x1d0 [i915]
[ 225.157275] [<ffffffffa091f329>] drm_dev_unregister+0x29/0xb0 [drm]
[ 225.157281] [<ffffffffa091f923>] drm_put_dev+0x23/0x60 [drm]
[ 225.157289] [<ffffffffa0b51cc5>] i915_pci_remove+0x15/0x20 [i915]
[ 225.157291] [<ffffffff8131a679>] pci_device_remove+0x39/0xc0
[ 225.157293] [<ffffffff813fe4ea>] __device_release_driver+0x9a/0x140
[ 225.157294] [<ffffffff813fe5b3>] device_release_driver+0x23/0x30
[ 225.157296] [<ffffffff813fc397>] unbind_store+0xe7/0x140
[ 225.157297] [<ffffffff813fb9e5>] drv_attr_store+0x25/0x30
[ 225.157299] [<ffffffff8124bf67>] sysfs_kf_write+0x37/0x40
[ 225.157300] [<ffffffff8124b498>] kernfs_fop_write+0x118/0x190
[ 225.157301] [<ffffffff811d2988>] __vfs_write+0x28/0x120
[ 225.157303] [<ffffffff812700cd>] ? security_file_permission+0x3d/0xc0
[ 225.157305] [<ffffffff810a3642>] ? percpu_down_read+0x12/0x60
[ 225.157306] [<ffffffff811d3668>] vfs_write+0xb8/0x1a0
[ 225.157307] [<ffffffff811d49f6>] SyS_write+0x46/0xb0
[ 225.157309] [<ffffffff81002cf1>] do_syscall_64+0x61/0x110
[ 225.157311] [<ffffffff815b5a95>] entry_SYSCALL64_slow_path+0x25/0x25
[ 225.157313] ---[ end trace 4631a3679da5de0a ]---
[ 225.157313] ------------[ cut here ]------------
[ 225.157321] WARNING: CPU: 2 PID: 7101 at drivers/gpu/drm/drm_mm.c:773
drm_mm_takedown+0x31/0x40 [drm]
[ 225.157321] Memory manager not clean during takedown.
[ 225.157322] Modules linked in: vfio_pci vfio_iommu_type1 vfio_virqfd vfio
drbg
ansi_cprng ctr ccm bridge stp llc af_packet ipt_MASQUERADE
nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4
nf_defrag_ipv4 iptable_filter ip_tables nf_conntrack_ipv6 nf_defrag_ipv6
xt_conntrack nf_conntrack ip6table_filter ip6_tables snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic binfmt_misc i915 arc4 iwlmvm
mac80211 loop i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt
fb_sys_fops drm x86_pkg_temp_thermal intel_powerclamp iwlwifi coretemp
kvm_intel kvm joydev snd_hda_intel uvcvideo mousedev snd_hda_codec btusb
cfg80211 btrtl videobuf2_vmalloc videobuf2_memops btbcm btintel snd_hwdep
videobuf2_v4l2 rtsx_pci_sdmmc videobuf2_core bluetooth mmc_core videodev
snd_hda_core
[ 225.157342] snd_pcsp rtsx_pci_ms snd_pcm memstick media irqbypass
crc32c_intel snd_timer psmouse ghash_clmulni_intel snd i2c_hid efi_pstore evdev
wmi video input_leds efivars i2c_i801 serio_raw rtsx_pci i2c_core backlight
intel_lpss_acpi intel_lpss thermal tpm_crb soundcore mfd_core button battery
ac acpi_pad efivarfs unix dm_zero dm_thin_pool dm_persistent_data dm_bio_prison
dm_service_time dm_round_robin dm_queue_length dm_multipath dm_log_userspace
cn dm_flakey dm_delay xts aesni_intel glue_helper lrw gf128mul ablk_helper
cryptd aes_x86_64 cbc sha256_generic scsi_transport_iscsi r8169 mii fuse nfs
lockd grace sunrpc fscache ext4 jbd2 mbcache multipath linear raid10 raid1
raid0 dm_raid raid456 libcrc32c md_mod async_raid6_recov async_memcpy async_pq
async_xor xor async_tx raid6_pq dm_snapshot
[ 225.157364] dm_bufio dm_crypt dm_mirror dm_region_hash dm_log dm_mod
hid_generic usbhid xhci_pci xhci_hcd ohci_hcd uhci_hcd usb_storage ehci_pci
ehci_hcd usbcore usb_common scsi_transport_fc sr_mod cdrom sg sd_mod ata_piix
ahci libahci sata_sx4 pata_oldpiix
[ 225.157371] CPU: 2 PID: 7101 Comm: vfio-bind Tainted: G W 4.7.2
#5
[ 225.157372] Hardware name: PC Specialist Limited N24_25JU/N24_25JU, BIOS
5.11 12/14/2015
[ 225.157373] 0000000000000000 ffff88035a43fbb8 ffffffff812d18c2
ffff88035a43fc08
[ 225.157374] 0000000000000000 ffff88035a43fbf8 ffffffff8105b211
000003055bfbe000
[ 225.157375] ffff88035f1a0000 ffff88035f1a8c30 ffff88035bfbe060
ffff88035e65bb80
[ 225.157377] Call Trace:
[ 225.157378] [<ffffffff812d18c2>] dump_stack+0x67/0x95
[ 225.157380] [<ffffffff8105b211>] __warn+0xd1/0xf0
[ 225.157382] [<ffffffff8105b27f>] warn_slowpath_fmt+0x4f/0x60
[ 225.157384] [<ffffffff8104c197>] ? iounmap+0x87/0xb0
[ 225.157385] [<ffffffff8104c197>] ? iounmap+0x87/0xb0
[ 225.157391] [<ffffffffa0922bb1>] drm_mm_takedown+0x31/0x40 [drm]
[ 225.157405] [<ffffffffa0b88c87>] i915_ggtt_cleanup_hw+0x57/0x90 [i915]
[ 225.157420] [<ffffffffa0c14003>] i915_driver_cleanup_hw+0x53/0x60 [i915]
[ 225.157434] [<ffffffffa0c15e9c>] i915_driver_unload+0x13c/0x1d0 [i915]
[ 225.157441] [<ffffffffa091f329>] drm_dev_unregister+0x29/0xb0 [drm]
[ 225.157447] [<ffffffffa091f923>] drm_put_dev+0x23/0x60 [drm]
[ 225.157455] [<ffffffffa0b51cc5>] i915_pci_remove+0x15/0x20 [i915]
[ 225.157457] [<ffffffff8131a679>] pci_device_remove+0x39/0xc0
[ 225.157458] [<ffffffff813fe4ea>] __device_release_driver+0x9a/0x140
[ 225.157460] [<ffffffff813fe5b3>] device_release_driver+0x23/0x30
[ 225.157461] [<ffffffff813fc397>] unbind_store+0xe7/0x140
[ 225.157462] [<ffffffff813fb9e5>] drv_attr_store+0x25/0x30
[ 225.157463] [<ffffffff8124bf67>] sysfs_kf_write+0x37/0x40
[ 225.157464] [<ffffffff8124b498>] kernfs_fop_write+0x118/0x190
[ 225.157466] [<ffffffff811d2988>] __vfs_write+0x28/0x120
[ 225.157467] [<ffffffff812700cd>] ? security_file_permission+0x3d/0xc0
[ 225.157469] [<ffffffff810a3642>] ? percpu_down_read+0x12/0x60
[ 225.157470] [<ffffffff811d3668>] vfs_write+0xb8/0x1a0
[ 225.157471] [<ffffffff811d49f6>] SyS_write+0x46/0xb0
[ 225.157473] [<ffffffff81002cf1>] do_syscall_64+0x61/0x110
[ 225.157475] [<ffffffff815b5a95>] entry_SYSCALL64_slow_path+0x25/0x25
[ 225.157476] ---[ end trace 4631a3679da5de0b ]---
[ 225.157583] kmem_cache_destroy i915_gem_vma: Slab cache still has objects
[ 225.157584] CPU: 2 PID: 7101 Comm: vfio-bind Tainted: G W 4.7.2
#5
[ 225.157585] Hardware name: PC Specialist Limited N24_25JU/N24_25JU, BIOS
5.11 12/14/2015
[ 225.157586] 0000000000000000 ffff88035a43fc28 ffffffff812d18c2
ffff88035ed25980
[ 225.157587] ffff88035ed25980 ffff88035a43fc90 ffffffff81181944
ffff88035be7b540
[ 225.157589] 00ff88035f1a0000 ffff88035a43fc48 ffff88035a43fc48
ffff88035a43fc58
[ 225.157590] Call Trace:
[ 225.157592] [<ffffffff812d18c2>] dump_stack+0x67/0x95
[ 225.157594] [<ffffffff81181944>] kmem_cache_destroy+0x1c4/0x1d0
[ 225.157607] [<ffffffffa0b91050>] i915_gem_load_cleanup+0x20/0x30 [i915]
[ 225.157622] [<ffffffffa0c15ec0>] i915_driver_unload+0x160/0x1d0 [i915]
[ 225.157629] [<ffffffffa091f329>] drm_dev_unregister+0x29/0xb0 [drm]
[ 225.157635] [<ffffffffa091f923>] drm_put_dev+0x23/0x60 [drm]
[ 225.157646] [<ffffffffa0b51cc5>] i915_pci_remove+0x15/0x20 [i915]
[ 225.157647] [<ffffffff8131a679>] pci_device_remove+0x39/0xc0
[ 225.157649] [<ffffffff813fe4ea>] __device_release_driver+0x9a/0x140
[ 225.157667] [<ffffffff813fe5b3>] device_release_driver+0x23/0x30
[ 225.157668] [<ffffffff813fc397>] unbind_store+0xe7/0x140
[ 225.157669] [<ffffffff813fb9e5>] drv_attr_store+0x25/0x30
[ 225.157670] [<ffffffff8124bf67>] sysfs_kf_write+0x37/0x40
[ 225.157672] [<ffffffff8124b498>] kernfs_fop_write+0x118/0x190
[ 225.157673] [<ffffffff811d2988>] __vfs_write+0x28/0x120
[ 225.157674] [<ffffffff812700cd>] ? security_file_permission+0x3d/0xc0
[ 225.157676] [<ffffffff810a3642>] ? percpu_down_read+0x12/0x60
[ 225.157677] [<ffffffff811d3668>] vfs_write+0xb8/0x1a0
[ 225.157679] [<ffffffff811d49f6>] SyS_write+0x46/0xb0
[ 225.157680] [<ffffffff81002cf1>] do_syscall_64+0x61/0x110
[ 225.157682] [<ffffffff815b5a95>] entry_SYSCALL64_slow_path+0x25/0x25
[ 225.157686] kmem_cache_destroy i915_gem_object: Slab cache still has
objects
[ 225.157687] CPU: 2 PID: 7101 Comm: vfio-bind Tainted: G W 4.7.2
#5
[ 225.157688] Hardware name: PC Specialist Limited N24_25JU/N24_25JU, BIOS
5.11 12/14/2015
[ 225.157689] 0000000000000000 ffff88035a43fc28 ffffffff812d18c2
ffff88035ed25ac0
[ 225.157690] ffff88035ed25ac0 ffff88035a43fc90 ffffffff81181944
ffff88035e5b2d00
[ 225.157691] 00ff88035f1a0000 ffff88035a43fc48 ffff88035a43fc48
ffff88035a43fc58
[ 225.157693] Call Trace:
[ 225.157694] [<ffffffff812d18c2>] dump_stack+0x67/0x95
[ 225.157696] [<ffffffff81181944>] kmem_cache_destroy+0x1c4/0x1d0
[ 225.157708] [<ffffffffa0b91059>] i915_gem_load_cleanup+0x29/0x30 [i915]
[ 225.157740] [<ffffffffa0c15ec0>] i915_driver_unload+0x160/0x1d0 [i915]
[ 225.157747] [<ffffffffa091f329>] drm_dev_unregister+0x29/0xb0 [drm]
[ 225.157753] [<ffffffffa091f923>] drm_put_dev+0x23/0x60 [drm]
[ 225.157761] [<ffffffffa0b51cc5>] i915_pci_remove+0x15/0x20 [i915]
[ 225.157762] [<ffffffff8131a679>] pci_device_remove+0x39/0xc0
[ 225.157764] [<ffffffff813fe4ea>] __device_release_driver+0x9a/0x140
[ 225.157765] [<ffffffff813fe5b3>] device_release_driver+0x23/0x30
[ 225.157766] [<ffffffff813fc397>] unbind_store+0xe7/0x140
[ 225.157767] [<ffffffff813fb9e5>] drv_attr_store+0x25/0x30
[ 225.157769] [<ffffffff8124bf67>] sysfs_kf_write+0x37/0x40
[ 225.157770] [<ffffffff8124b498>] kernfs_fop_write+0x118/0x190
[ 225.157771] [<ffffffff811d2988>] __vfs_write+0x28/0x120
[ 225.157773] [<ffffffff812700cd>] ? security_file_permission+0x3d/0xc0
[ 225.157774] [<ffffffff810a3642>] ? percpu_down_read+0x12/0x60
[ 225.157775] [<ffffffff811d3668>] vfs_write+0xb8/0x1a0
[ 225.157777] [<ffffffff811d49f6>] SyS_write+0x46/0xb0
[ 225.157778] [<ffffffff81002cf1>] do_syscall_64+0x61/0x110
[ 225.157780] [<ffffffff815b5a95>] entry_SYSCALL64_slow_path+0x25/0x25
[ 225.158845] vgaarb: device changed decodes:
PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 225.824313] DMAR: DRHD: handling fault status reg 2
[ 225.824318] DMAR: [DMA Write] Request device [00:02.0] fault addr 0 [fault
reason 02] Present bit in context entry is clear
[ 226.392227] vfio_ecap_init: 0000:00:02.0 hiding ecap 0x1b@0x100
[ 226.393717] vfio-pci 0000:00:02.0: BAR 2: can't reserve [mem
0xc0000000-0xcfffffff 64bit pref]
[ 226.393873] vfio-pci 0000:00:02.0: Invalid PCI ROM header signature:
expecting 0xaa55, got 0xffff
[ 227.020245] vfio-pci 0000:00:02.0: Invalid PCI ROM header signature:
expecting 0xaa55, got 0xffff
[ 227.286232] kvm: zapping shadow pages for mmio generation wraparound
[ 227.408361] kvm: zapping shadow pages for mmio generation wraparound
As a little update for Alex, I deactivated simplefb in the kernel, so
that
it doesn't take the igd. Now I just see a black screen until i915 gets to the
vga.
Thanks!
José.
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