From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maik Broemme Subject: Re: [Qemu-devel] VFIO VGA test branches Date: Tue, 28 May 2013 20:45:43 +0200 Message-ID: <20130528184543.GH1241@parallels.com> References: <1367621792.22436.49.camel@ul30vt.home> <1368478534.14279.201.camel@ori.omang.mine.nu> <1368483819.5520.101.camel@ul30vt.home> <1368977758.14279.329.camel@ori.omang.mine.nu> <20130519192640.GB27523@parallels.com> <1369019831.5520.275.camel@ul30vt.home> <20130520110555.GH3391@parallels.com> <20130528014002.GB1241@parallels.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: Knut Omang , kvm , qemu-devel To: Alex Williamson Return-path: Received: from relay.swsoft.eu ([109.70.220.8]:42228 "EHLO relay.swsoft.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752989Ab3E1Spq (ORCPT ); Tue, 28 May 2013 14:45:46 -0400 Content-Disposition: inline In-Reply-To: <20130528014002.GB1241@parallels.com> Sender: kvm-owner@vger.kernel.org List-ID: Hi, Maik Broemme wrote: > Hi Alex, > > Maik Broemme wrote: > > Hi Alex, > > > > Alex Williamson wrote: > > > > > > Good to hear. It looks like you have the same motherboard as my AMD > > > test system. An HD7850 in that system runs quite reliably with the > > > branches above although I do occasionally get VGA palette corruption. > > > > > > > Good to know. I'm using a Radeon HD7870 which works fine now. I have the > > same VGA palette corruption occasionally but only until Catalyst driver > > is loaded. So it happens sometimes during VGA init if Windows 7 boot > > logo is shown with very strange colors and went away if Catalyst driver > > is loaded. > > > > > Are you still require -vga cirrus or do the -vga none, x-vga=on cases > > > work now too? Thanks, > > > > > > > No longer required, -vga none with x-vga=on work on your branches fine > > now. Not sure if there was something more changed because with original > > Fedora 3.9.2 kernel it still doesn't work. > > > > Alex, I have a strange issue now with either the 'vfio-vga-reset' > branches or with the stable 3.9.4 kernel. This is my 'lspci' output: > > 00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40) > 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 520] (rev a1) > 01:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1) > 02:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Pitcairn [Radeon HD 7800] > 02:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] > > The '01:00.0' is my primary device used for Linux and '02:00.0' my > secondary for QEMU. Two new different problems: > > 1) If the 'nvidia.ko' binary driver is loaded for the first card, QEMU > immediately get stuck after startup and hangs with: > > 1140 futex(0x7f0ad9b21300, FUTEX_WAIT_PRIVATE, 2, NULL > > I have the complete strace output if needed. After that I can only > terminate qemu with 'kill -9' and if I start it again the following > Oops occurs: > > [ 655.684121] ------------[ cut here ]------------ > [ 655.684134] WARNING: at lib/list_debug.c:29 __list_add+0x77/0xd0() > [ 655.684151] Hardware name: GA-990FXA-UD3 > [ 655.684271] list_add corruption. next->prev should be prev (ffffffff81ca3d98), but was (null). (next=ffff88041bc3fe08). > [ 655.684477] Modules linked in: vhost_net macvtap macvlan tun arc4 md4 nls_utf8 cifs dns_resolver fscache vfio_pci vfio_iommu_type1 vfio bridge stp llc ip6table_filter ip6_tables it87 hwmon_vid snd_hda_codec_hdmi nvidia(POF) acpi_cpufreq mperf kvm_amd snd_hda_codec_realtek kvm crc32_pclmul crc32c_intel ghash_clmulni_intel snd_hda_intel snd_hda_codec microcode edac_core snd_hwdep fam15h_power snd_seq edac_mce_amd snd_seq_device k10temp r8169 sp5100_tco snd_pcm mii i2c_piix4 snd_page_alloc snd_timer i2c_core snd soundcore mxm_wmi firewire_ohci firewire_core crc_itu_t wmi > [ 655.685451] Pid: 2097, comm: qemu-system-x86 Tainted: PF O 3.9.4-200.fc18.x86_64 #1 > [ 655.685642] Call Trace: > [ 655.685738] [] warn_slowpath_common+0x75/0xa0 > [ 655.685851] [] warn_slowpath_fmt+0x46/0x50 > [ 655.685955] [] __list_add+0x77/0xd0 > [ 655.686058] [] add_wait_queue+0x3c/0x60 > [ 655.686162] [] vga_get+0xdd/0x190 > [ 655.686266] [] ? try_to_wake_up+0x2d0/0x2d0 > [ 655.686373] [] vfio_pci_vga_rw+0xb5/0x230 [vfio_pci] > [ 655.686481] [] vfio_pci_rw+0x39/0x80 [vfio_pci] > [ 655.686587] [] vfio_pci_read+0x1c/0x20 [vfio_pci] > [ 655.686701] [] vfio_device_fops_read+0x23/0x30 [vfio] > [ 655.686814] [] vfs_read+0xa9/0x180 > [ 655.686915] [] sys_pread64+0x9a/0xb0 > [ 655.687018] [] system_call_fastpath+0x16/0x1b > [ 655.687123] ---[ end trace a68eabc3660237b1 ]--- > > This is always reproducible. I know it is the binary driver and maybe > nobody cares but it is widely used. :) Here is the DEBUG_VFIO output: vfio: vfio_initfn(0000:04:00.0) group 14 vfio: region_add 0 - afffffff [0x7f8698000000] vfio: SKIPPING region_add fec00000 - fec00fff vfio: SKIPPING region_add fed00000 - fed003ff vfio: SKIPPING region_add fee00000 - feefffff vfio: region_add fffe0000 - ffffffff [0x7f88aa400000] vfio: region_add 100000000 - 24fffffff [0x7f8748000000] vfio: Device 0000:04:00.0 flags: 3, regions: 9, irgs: 4 vfio: Device 0000:04:00.0 region 0: vfio: size: 0x10000000, offset: 0x0, flags: 0x7 vfio: Device 0000:04:00.0 region 1: vfio: size: 0x0, offset: 0x10000000000, flags: 0x0 vfio: Device 0000:04:00.0 region 2: vfio: size: 0x40000, offset: 0x20000000000, flags: 0x7 vfio: Device 0000:04:00.0 region 3: vfio: size: 0x0, offset: 0x30000000000, flags: 0x0 vfio: Device 0000:04:00.0 region 4: vfio: size: 0x100, offset: 0x40000000000, flags: 0x3 vfio: Device 0000:04:00.0 region 5: vfio: size: 0x0, offset: 0x50000000000, flags: 0x0 vfio: Device 0000:04:00.0 ROM: vfio: size: 0x20000, offset: 0x60000000000, flags: 0x1 vfio: Device 0000:04:00.0 config: vfio: size: 0x1000, offset: 0x70000000000, flags: 0x3 vfio: vfio_load_rom(0000:04:00.0) vfio: Enabled ATI/AMD BAR2 0x4000 quirk for device 0000:04:00.0 vfio: Enabled ATI/AMD BAR4 window quirk for device 0000:04:00.0 vfio: Enabled ATI/AMD quirk 0x3c3 BAR4 for device 0000:04:00.0 vfio: 0000:04:00.0 PCI MSI CAP @0xa0 vfio: vfio_pci_read_config(0000:04:00.0, @0x3d, len=0x1) 1 vfio: vfio_pci_read_config(0000:04:00.0, @0x3d, len=0x1) 1 vfio: vfio_enable_intx_kvm(0000:04:00.0) KVM INTx accel enabled vfio: vfio_enable_intx(0000:04:00.0) vfio: vfio_initfn(0000:04:00.1) group 14 vfio: Device 0000:04:00.1 flags: 3, regions: 9, irgs: 4 vfio: Device 0000:04:00.1 region 0: vfio: size: 0x4000, offset: 0x0, flags: 0x7 vfio: Device 0000:04:00.1 region 1: vfio: size: 0x0, offset: 0x10000000000, flags: 0x0 vfio: Device 0000:04:00.1 region 2: vfio: size: 0x0, offset: 0x20000000000, flags: 0x0 vfio: Device 0000:04:00.1 region 3: vfio: size: 0x0, offset: 0x30000000000, flags: 0x0 vfio: Device 0000:04:00.1 region 4: vfio: size: 0x0, offset: 0x40000000000, flags: 0x0 vfio: Device 0000:04:00.1 region 5: vfio: size: 0x0, offset: 0x50000000000, flags: 0x0 vfio: Device 0000:04:00.1 ROM: vfio: size: 0x0, offset: 0x60000000000, flags: 0x0 vfio: Device 0000:04:00.1 config: vfio: size: 0x1000, offset: 0x70000000000, flags: 0x3 vfio: 0000:04:00.1 PCI MSI CAP @0xa0 vfio: vfio_pci_read_config(0000:04:00.1, @0x3d, len=0x1) 2 vfio: vfio_pci_read_config(0000:04:00.1, @0x3d, len=0x1) 2 vfio: vfio_enable_intx_kvm(0000:04:00.1) KVM INTx accel enabled vfio: vfio_enable_intx(0000:04:00.1) vfio: region_del 0 - afffffff vfio: region_add 0 - bffff [0x7f8698000000] vfio: region_add c0000 - dffff [0x7f88aa200000] vfio: region_add e0000 - fffff [0x7f88aa400000] vfio: region_add 100000 - afffffff [0x7f8698100000] vfio: vfio_pci_reset(0000:04:00.0) vfio: vfio_disable_intx_kvm(0000:04:00.0) KVM INTx accel disabled vfio: vfio_disable_intx(0000:04:00.0) vfio: vfio_pci_read_config(0000:04:00.0, @0x54, len=0x2) 0 vfio: vfio_pci_read_config(0000:04:00.0, @0x4, len=0x2) 3 vfio: vfio_pci_write_config(0000:04:00.0, @0x4, 0x0, len=0x2) vfio: vfio_pci_read_config(0000:04:00.0, @0x3d, len=0x1) 1 vfio: vfio_enable_intx_kvm(0000:04:00.0) KVM INTx accel enabled vfio: vfio_enable_intx(0000:04:00.0) vfio: vfio_pci_reset(0000:04:00.1) vfio: vfio_disable_intx_kvm(0000:04:00.1) KVM INTx accel disabled vfio: vfio_disable_intx(0000:04:00.1) vfio: vfio_pci_read_config(0000:04:00.1, @0x54, len=0x2) 0 vfio: vfio_pci_read_config(0000:04:00.1, @0x4, len=0x2) 6 vfio: vfio_pci_write_config(0000:04:00.1, @0x4, 0x0, len=0x2) vfio: vfio_pci_read_config(0000:04:00.1, @0x3d, len=0x1) 2 vfio: vfio_enable_intx_kvm(0000:04:00.1) KVM INTx accel enabled vfio: vfio_enable_intx(0000:04:00.1) vfio: region_del 0 - bffff vfio: region_del c0000 - dffff vfio: region_add 0 - c7fff [0x7f8698000000] vfio: region_add c8000 - dffff [0x7f88aa208000] vfio: region_del 0 - c7fff vfio: region_del c8000 - dffff vfio: region_add 0 - cffff [0x7f8698000000] vfio: region_add d0000 - dffff [0x7f88aa210000] vfio: region_del 0 - cffff vfio: region_del d0000 - dffff vfio: region_add 0 - d7fff [0x7f8698000000] vfio: region_add d8000 - dffff [0x7f88aa218000] vfio: region_del 0 - d7fff vfio: region_del d8000 - dffff vfio: region_add 0 - dffff [0x7f8698000000] vfio: region_del 0 - dffff vfio: region_del e0000 - fffff vfio: region_add 0 - e7fff [0x7f8698000000] vfio: region_add e8000 - fffff [0x7f88aa408000] vfio: region_del 0 - e7fff vfio: region_del e8000 - fffff vfio: region_add 0 - effff [0x7f8698000000] vfio: region_add f0000 - fffff [0x7f88aa410000] vfio: region_del 0 - effff vfio: region_del f0000 - fffff vfio: region_del 100000 - afffffff vfio: region_add 0 - afffffff [0x7f8698000000] vfio: vfio_pci_read_config(0000:04:00.0, @0x0, len=0x2) 1002 vfio: vfio_pci_read_config(0000:04:00.0, @0xa, len=0x2) 300 vfio: vfio_pci_read_config(0000:04:00.0, @0xe, len=0x1) 80 vfio: vfio_pci_read_config(0000:04:00.1, @0x0, len=0x2) 1002 vfio: vfio_pci_read_config(0000:04:00.1, @0xa, len=0x2) 403 vfio: vfio_pci_read_config(0000:04:00.0, @0x0, len=0x2) 1002 vfio: vfio_pci_read_config(0000:04:00.0, @0xa, len=0x2) 300 vfio: vfio_pci_read_config(0000:04:00.0, @0xe, len=0x1) 80 vfio: vfio_pci_read_config(0000:04:00.1, @0x0, len=0x2) 1002 vfio: vfio_pci_read_config(0000:04:00.1, @0xa, len=0x2) 403 vfio: vfio_pci_read_config(0000:04:00.0, @0x0, len=0x2) 1002 vfio: vfio_pci_read_config(0000:04:00.0, @0x0, len=0x4) 68181002 vfio: vfio_pci_read_config(0000:04:00.0, @0x8, len=0x4) 3000000 vfio: vfio_pci_read_config(0000:04:00.0, @0xe, len=0x1) 80 vfio: vfio_pci_read_config(0000:04:00.0, @0xe, len=0x1) 80 vfio: vfio_pci_read_config(0000:04:00.1, @0x0, len=0x2) 1002 vfio: vfio_pci_read_config(0000:04:00.1, @0x0, len=0x4) aab01002 vfio: vfio_pci_read_config(0000:04:00.1, @0x8, len=0x4) 4030000 vfio: vfio_pci_read_config(0000:04:00.1, @0xe, len=0x1) 80 vfio: SKIPPING region_add b0000000 - bfffffff vfio: vfio_pci_read_config(0000:04:00.0, @0x10, len=0x4) c000000c vfio: vfio_pci_write_config(0000:04:00.0, @0x10, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x10, len=0x4) f000000c vfio: vfio_pci_write_config(0000:04:00.0, @0x10, 0xc000000c, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x14, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.0, @0x14, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x14, len=0x4) ffffffff vfio: vfio_pci_write_config(0000:04:00.0, @0x14, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x18, len=0x4) fde80004 vfio: vfio_pci_write_config(0000:04:00.0, @0x18, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x18, len=0x4) fffc0004 vfio: vfio_pci_write_config(0000:04:00.0, @0x18, 0xfde80004, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x1c, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.0, @0x1c, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x1c, len=0x4) ffffffff vfio: vfio_pci_write_config(0000:04:00.0, @0x1c, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x20, len=0x4) ce01 vfio: vfio_pci_write_config(0000:04:00.0, @0x20, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x20, len=0x4) ffffff01 vfio: vfio_pci_write_config(0000:04:00.0, @0x20, 0xce01, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x24, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.0, @0x24, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x24, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.0, @0x24, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x30, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.0, @0x30, 0xfffff800, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x30, len=0x4) fffe0000 vfio: vfio_pci_write_config(0000:04:00.0, @0x30, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x10, len=0x4) fdefc004 vfio: vfio_pci_write_config(0000:04:00.1, @0x10, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x10, len=0x4) ffffc004 vfio: vfio_pci_write_config(0000:04:00.1, @0x10, 0xfdefc004, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x14, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x14, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x14, len=0x4) ffffffff vfio: vfio_pci_write_config(0000:04:00.1, @0x14, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x18, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x18, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x18, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x18, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x1c, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x1c, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x1c, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x1c, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x20, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x20, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x20, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x20, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x24, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x24, 0xffffffff, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x24, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x24, 0x0, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x30, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x30, 0xfffff800, len=0x4) vfio: vfio_pci_read_config(0000:04:00.1, @0x30, len=0x4) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x30, 0x0, len=0x4) vfio: vfio_pci_write_config(0000:04:00.0, @0x20, 0xc000, len=0x4) vfio: vfio_pci_write_config(0000:04:00.0, @0x18, 0xfea00000, len=0x4) vfio: vfio_pci_write_config(0000:04:00.0, @0x1c, 0x0, len=0x4) vfio: vfio_pci_write_config(0000:04:00.0, @0x30, 0xfea40000, len=0x4) vfio: vfio_pci_write_config(0000:04:00.1, @0x10, 0xfea60000, len=0x4) vfio: vfio_pci_write_config(0000:04:00.1, @0x14, 0x0, len=0x4) vfio: vfio_pci_write_config(0000:04:00.0, @0x10, 0xe0000000, len=0x4) vfio: vfio_pci_write_config(0000:04:00.0, @0x14, 0x0, len=0x4) vfio: SKIPPING region_add feb40000 - feb4002f vfio: SKIPPING region_add feb40800 - feb40807 vfio: SKIPPING region_add feb41000 - feb4101f vfio: SKIPPING region_add feb41800 - feb41807 vfio: vfio_update_irq(0000:04:00.1) IRQ moved 20 -> 10 vfio: vfio_disable_intx_kvm(0000:04:00.1) KVM INTx accel disabled vfio: vfio_enable_intx_kvm(0000:04:00.1) KVM INTx accel enabled vfio: vfio_update_irq(0000:04:00.0) IRQ moved 23 -> 11 vfio: vfio_disable_intx_kvm(0000:04:00.0) KVM INTx accel disabled vfio: vfio_enable_intx_kvm(0000:04:00.0) KVM INTx accel enabled vfio: SKIPPING region_add feb42000 - feb42fff vfio: vfio_pci_read_config(0000:04:00.0, @0x3d, len=0x1) 1 vfio: vfio_pci_write_config(0000:04:00.0, @0x3c, 0xb, len=0x1) vfio: vfio_pci_read_config(0000:04:00.0, @0x4, len=0x2) 0 vfio: vfio_pci_write_config(0000:04:00.0, @0x4, 0x103, len=0x2) vfio: region_add e0000000 - efffffff [0x7f8688000000] vfio: region_add fea00000 - fea03fff [0x7f88aa7b8000] vfio: SKIPPING region_add fea04000 - fea04fff vfio: region_add fea05000 - fea3ffff [0x7f88aa7bd000] vfio: vfio_pci_read_config(0000:04:00.1, @0x3d, len=0x1) 2 vfio: vfio_pci_write_config(0000:04:00.1, @0x3c, 0xa, len=0x1) vfio: vfio_pci_read_config(0000:04:00.1, @0x4, len=0x2) 0 vfio: vfio_pci_write_config(0000:04:00.1, @0x4, 0x103, len=0x2) vfio: region_add fea60000 - fea63fff [0x7f88bc710000] vfio: vfio_pci_read_config(0000:04:00.0, @0x4, len=0x2) 103 vfio: vfio_pci_read_config(0000:04:00.0, @0x4, len=0x2) 103 vfio: vfio_pci_write_config(0000:04:00.0, @0x4, 0x103, len=0x2) vfio: region_del 0 - afffffff vfio: region_add 0 - 9ffff [0x7f8698000000] vfio: SKIPPING region_add a0000 - bffff vfio: region_add c0000 - afffffff [0x7f86980c0000] vfio: vfio_pci_read_config(0000:04:00.0, @0x4, len=0x2) 103 vfio: vfio_pci_read_config(0000:04:00.0, @0x30, len=0x4) fea40000 vfio: vfio_pci_write_config(0000:04:00.0, @0x30, 0xfffffffe, len=0x4) vfio: vfio_pci_read_config(0000:04:00.0, @0x30, len=0x4) fffe0000 vfio: vfio_pci_write_config(0000:04:00.0, @0x30, 0xfea40001, len=0x4) vfio: region_add fea40000 - fea5ffff [0x7f88a9e00000] vfio: vfio_pci_write_config(0000:04:00.0, @0x30, 0xfea40000, len=0x4) vfio: region_del fea40000 - fea5ffff Here is the strace output from this failure: 1110 ioctl(14, KVM_RUN, 0) = 0 1110 pread(20, 1099 <... poll resumed> ) = 1 ([{fd=0, revents=POLLIN}]) 1099 futex(0x7ff73ca62fa0, FUTEX_WAIT_PRIVATE, 2, NULL 1109 <... futex resumed> ) = -1 ETIMEDOUT (Connection timed out) 1109 madvise(0x7ff72fe17000, 8368128, MADV_DONTNEED) = 0 1109 _exit(0) = ? 1109 +++ exited with 0 +++ >>From reading the source 'hw/misc/vfio.c' it looks like the following in 'vfio_vga_read' never finished: if (pread(vga->fd, &buf, size, offset) != size) { error_report("%s(,0x%"HWADDR_PRIx", %d) failed: %m", __func__, region->offset + addr, size); return (uint64_t)-1; } > > 2) If the 'nouveau.ko' driver is loaded it is even more strange. As soon > as I start qemu all my SATA links get a hard reset and kernel freezes. > No SysRQs are working anymore and only reboot helps. If needed I can > look if I can get some dumps from this freeze because it writes nothing > more to the disks. > > But it is getting even more strange. I was putting the secondary card > in another PCI slot and then it started to work with nouveau module > loaded and passthrough ATI card to QEMU. But this worked only until I > started X server with nouveau X driver. As soon as X is running and I > started QEMU it hanged again in FUTEX_WAIT_PRIVATE. > > 3) Without loading 'nvidia.ko' or 'nouveau.ko' modules it works out of > the box with several start/stop cycles. However I have no X in this > case. ;) > > Any ideas? :) > > > > Alex > > > > > > > --Maik > > > > --Maik > --Maik