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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] PVH Dom0 Intel IOMMU issues
On Tue, Apr 18, 2017 at 03:04:51AM +0000, Tian, Kevin wrote: > > From: Roger Pau Monné [mailto:roger.pau@xxxxxxxxxx] > > Sent: Friday, April 14, 2017 11:35 PM > > > > Hello, > > > > Although PVHv2 Dom0 is not yet finished, I've been trying the current code > > on > > different hardware, and found that with pre-Haswell Intel hardware PVHv2 > > Dom0 > > completely freezes the box when calling iommu_hwdom_init in > > dom0_construct_pvh. > > OTOH the same doesn't happen when using a newer CPU (ie: haswell or > > newer). > > > > I'm not able to debug that in any meaningful way because the box seems to > > lock > > up completely, even the watchdog NMI stops working. Here is the boot log, > > up to > > the point where it freezes: > > > > I don't have an idea now w/o seeing more meaningful debug message. > Maybe you have to add more fine-grained prints to capture some > useful hints. Hello, I've added the following debug patch: diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c index a5c61c6e21..cb039d74e7 100644 --- a/xen/drivers/passthrough/vtd/iommu.c +++ b/xen/drivers/passthrough/vtd/iommu.c @@ -765,7 +765,9 @@ static void iommu_enable_translation(struct acpi_drhd_unit *drhd) iommu->reg); spin_lock_irqsave(&iommu->register_lock, flags); sts = dmar_readl(iommu->reg, DMAR_GSTS_REG); + printk("Before DMA_GCMD_TE\n"); dmar_writel(iommu->reg, DMAR_GCMD_REG, sts | DMA_GCMD_TE); + printk("After DMA_GCMD_TE\n"); /* Make sure hardware complete it */ IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, dmar_readl, And got this output: (XEN) Xen version 4.9-rc (root@) (FreeBSD clang version 3.9.0 (tags/RELEASE_390/final 280324) (based on LLVM 3.9.0)) debug=y Tue Apr 18 08:22:39 BST 2017 (XEN) Latest ChangeSet: (XEN) Console output is synchronous. (XEN) Bootloader: FreeBSD Loader (XEN) Command line: dom0_mem=4096M dom0=pvh com1=115200,8n1 console=com1,vga guest_loglvl=all loglvl=all iommu=debug,verbose sync_console watchdog (XEN) Xen image load base address: 0 (XEN) Video information: (XEN) VGA is text mode 80x25, font 8x16 (XEN) VBE/DDC methods: V2; EDID transfer time: 1 seconds (XEN) Disc information: (XEN) Found 2 MBR signatures (XEN) Found 2 EDD information structures (XEN) Xen-e820 RAM map: (XEN) 0000000000000000 - 000000000008dc00 (usable) (XEN) 000000000008dc00 - 00000000000a0000 (reserved) (XEN) 00000000000e0000 - 0000000000100000 (reserved) (XEN) 0000000000100000 - 0000000018ebb000 (usable) (XEN) 0000000018ebb000 - 0000000018fe8000 (ACPI NVS) (XEN) 0000000018fe8000 - 0000000018fe9000 (usable) (XEN) 0000000018fe9000 - 0000000019000000 (ACPI NVS) (XEN) 0000000019000000 - 000000001dffd000 (usable) (XEN) 000000001dffd000 - 000000001e000000 (ACPI data) (XEN) 000000001e000000 - 00000000ac784000 (usable) (XEN) 00000000ac784000 - 00000000ac818000 (reserved) (XEN) 00000000ac818000 - 00000000ad800000 (usable) (XEN) 00000000b0000000 - 00000000b4000000 (reserved) (XEN) 00000000fed20000 - 00000000fed40000 (reserved) (XEN) 00000000fed50000 - 00000000fed90000 (reserved) (XEN) 00000000ffa00000 - 00000000ffa40000 (reserved) (XEN) 0000000100000000 - 0000000250000000 (usable) (XEN) New Xen image base address: 0xad200000 (XEN) ACPI: RSDP 000FE300, 0024 (r2 DELL ) (XEN) ACPI: XSDT 1DFFEE18, 0074 (r1 DELL CBX3 6222004 MSFT 10013) (XEN) ACPI: FACP 18FEFD98, 00F4 (r4 DELL CBX3 6222004 MSFT 10013) (XEN) ACPI: DSDT 18FA9018, 6373 (r1 DELL CBX3 0 INTL 20091112) (XEN) ACPI: FACS 18FF1F40, 0040 (XEN) ACPI: APIC 1DFFDC18, 0158 (r2 DELL CBX3 6222004 MSFT 10013) (XEN) ACPI: MCFG 18FFED18, 003C (r1 A M I OEMMCFG. 6222004 MSFT 97) (XEN) ACPI: TCPA 18FFEC98, 0032 (r2 0 0) (XEN) ACPI: SSDT 18FF0A98, 0306 (r1 DELLTP TPM 3000 INTL 20091112) (XEN) ACPI: HPET 18FFEC18, 0038 (r1 A M I PCHHPET 6222004 AMI. 3) (XEN) ACPI: BOOT 18FFEB98, 0028 (r1 DELL CBX3 6222004 AMI 10013) (XEN) ACPI: SSDT 18FB0018, 36FFE (r2 INTEL CpuPm 4000 INTL 20091112) (XEN) ACPI: SLIC 18FEEC18, 0176 (r3 DELL CBX3 6222004 MSFT 10013) (XEN) ACPI: DMAR 18FF1B18, 0094 (r1 A M I OEMDMAR 1 INTL 1) (XEN) System RAM: 8149MB (8345288kB) (XEN) No NUMA configuration found (XEN) Faking a node at 0000000000000000-0000000250000000 (XEN) Domain heap initialised (XEN) CPU Vendor: Intel, Family 6 (0x6), Model 45 (0x2d), Stepping 7 (raw 000206d7) (XEN) found SMP MP-table at 000f1db0 (XEN) DMI 2.6 present. (XEN) Using APIC driver default (XEN) ACPI: PM-Timer IO Port: 0x408 (32 bits) (XEN) ACPI: SLEEP INFO: pm1x_cnt[1:404,1:0], pm1x_evt[1:400,1:0] (XEN) ACPI: 32/64X FACS address mismatch in FADT - 18ffdf40/0000000018ff1f40, using 32 (XEN) ACPI: wakeup_vec[18ffdf4c], vec_size[20] (XEN) ACPI: Local APIC address 0xfee00000 (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled) (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x04] enabled) (XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x06] enabled) (XEN) ACPI: LAPIC (acpi_id[0x05] lapic_id[0x04] disabled) (XEN) ACPI: LAPIC (acpi_id[0x06] lapic_id[0x05] disabled) (XEN) ACPI: LAPIC (acpi_id[0x07] lapic_id[0x06] disabled) (XEN) ACPI: LAPIC (acpi_id[0x08] lapic_id[0x07] disabled) (XEN) ACPI: LAPIC (acpi_id[0x09] lapic_id[0x08] disabled) (XEN) ACPI: LAPIC (acpi_id[0x0a] lapic_id[0x09] disabled) (XEN) ACPI: LAPIC (acpi_id[0x0b] lapic_id[0x0a] disabled) (XEN) ACPI: LAPIC (acpi_id[0x0c] lapic_id[0x0b] disabled) (XEN) ACPI: LAPIC (acpi_id[0x0d] lapic_id[0x0c] disabled) (XEN) ACPI: LAPIC (acpi_id[0x0e] lapic_id[0x0d] disabled) (XEN) ACPI: LAPIC (acpi_id[0x0f] lapic_id[0x0e] disabled) (XEN) ACPI: LAPIC (acpi_id[0x10] lapic_id[0x0f] disabled) (XEN) ACPI: LAPIC (acpi_id[0x11] lapic_id[0x10] disabled) (XEN) ACPI: LAPIC (acpi_id[0x12] lapic_id[0x11] disabled) (XEN) ACPI: LAPIC (acpi_id[0x13] lapic_id[0x12] disabled) (XEN) ACPI: LAPIC (acpi_id[0x14] lapic_id[0x13] disabled) (XEN) ACPI: LAPIC (acpi_id[0x15] lapic_id[0x14] disabled) (XEN) ACPI: LAPIC (acpi_id[0x16] lapic_id[0x15] disabled) (XEN) ACPI: LAPIC (acpi_id[0x17] lapic_id[0x16] disabled) (XEN) ACPI: LAPIC (acpi_id[0x18] lapic_id[0x17] disabled) (XEN) ACPI: LAPIC (acpi_id[0x19] lapic_id[0x18] disabled) (XEN) ACPI: LAPIC (acpi_id[0x1a] lapic_id[0x19] disabled) (XEN) ACPI: LAPIC (acpi_id[0x1b] lapic_id[0x1a] disabled) (XEN) ACPI: LAPIC (acpi_id[0x1c] lapic_id[0x1b] disabled) (XEN) ACPI: LAPIC (acpi_id[0x1d] lapic_id[0x1c] disabled) (XEN) ACPI: LAPIC (acpi_id[0x1e] lapic_id[0x1d] disabled) (XEN) ACPI: LAPIC (acpi_id[0x1f] lapic_id[0x1e] disabled) (XEN) ACPI: LAPIC (acpi_id[0x20] lapic_id[0x1f] disabled) (XEN) ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0]) (XEN) IOAPIC[0]: apic_id 0, version 32, address 0xfec00000, GSI 0-23 (XEN) ACPI: IOAPIC (id[0x02] address[0xfec3f000] gsi_base[24]) (XEN) IOAPIC[1]: apic_id 2, version 32, address 0xfec3f000, GSI 24-47 (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) (XEN) ACPI: IRQ0 used by override. (XEN) ACPI: IRQ2 used by override. (XEN) ACPI: IRQ9 used by override. (XEN) Enabling APIC mode: Flat. Using 2 I/O APICs (XEN) ACPI: HPET id: 0x8086a701 base: 0xfed00000 (XEN) [VT-D]Host address width 46 (XEN) [VT-D]found ACPI_DMAR_DRHD: (XEN) [VT-D] dmaru->address = fbffe000 (XEN) [VT-D]drhd->address = fbffe000 iommu->reg = ffff82c00021b000 (XEN) [VT-D]cap = d2078c106f0462 ecap = f020fa (XEN) [VT-D] IOAPIC: 0000:00:1f.7 (XEN) [VT-D] IOAPIC: 0000:00:05.4 (XEN) [VT-D] MSI HPET: 0000:f0:0f.0 (XEN) [VT-D] flags: INCLUDE_ALL (XEN) [VT-D]found ACPI_DMAR_RMRR: (XEN) [VT-D] endpoint: 0000:00:1d.0 (XEN) [VT-D] endpoint: 0000:00:1a.0 (XEN) [VT-D]dmar.c:638: RMRR region: base_addr ac7cf000 end_addr ac7defff (XEN) [VT-D]found ACPI_DMAR_RHSA: (XEN) [VT-D] rhsau->address: fbffe000 rhsau->proximity_domain: 0 (XEN) ERST table was not found (XEN) Using ACPI (MADT) for SMP configuration information (XEN) SMP: Allowing 32 CPUs (28 hotplug CPUs) (XEN) IRQ limits: 48 GSI, 736 MSI/MSI-X (XEN) Switched to APIC driver x2apic_cluster. (XEN) xstate: size: 0x340 and states: 0x7 (XEN) mce_intel.c:732: MCA capability: firstbank 0, 0 ext MSRs, BCAST, SER, CMCI (XEN) CPU0: Intel machine check reporting enabled (XEN) Using scheduler: SMP Credit Scheduler (credit) (XEN) Platform timer is 14.318MHz HPET (XEN) Detected 2992.792 MHz processor. (XEN) Initing memory sharing. (XEN) alt table ffff82d0804181f0 -> ffff82d080418964 (XEN) PCI: MCFG configuration 0: base b0000000 segment 0000 buses 00 - 3f (XEN) PCI: MCFG area at b0000000 reserved in E820 (XEN) PCI: Using MCFG for segment 0000 bus 00-3f (XEN) Intel VT-d iommu 0 supported page sizes: 4kB, 2MB, 1GB. (XEN) Intel VT-d Snoop Control enabled. (XEN) Intel VT-d Dom0 DMA Passthrough not enabled. (XEN) Intel VT-d Queued Invalidation enabled. (XEN) Intel VT-d Interrupt Remapping enabled. (XEN) Intel VT-d Posted Interrupt not enabled. (XEN) Intel VT-d Shared EPT tables enabled. (XEN) I/O virtualisation enabled (XEN) - Dom0 mode: Relaxed (XEN) Interrupt remapping enabled (XEN) nr_sockets: 9 (XEN) Enabled directed EOI with ioapic_ack_old on! (XEN) ENABLING IO-APIC IRQs (XEN) -> Using old ACK method (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1 (XEN) TSC deadline timer enabled (XEN) Allocated console ring of 32 KiB. (XEN) mwait-idle: MWAIT substates: 0x21120 (XEN) mwait-idle: v0.4.1 model 0x2d (XEN) mwait-idle: lapic_timer_reliable_states 0xffffffff (XEN) VMX: Supported advanced features: (XEN) - APIC MMIO access virtualisation (XEN) - APIC TPR shadow (XEN) - Extended Page Tables (EPT) (XEN) - Virtual-Processor Identifiers (VPID) (XEN) - Virtual NMI (XEN) - MSR direct-access bitmap (XEN) - Unrestricted Guest (XEN) HVM: ASIDs enabled. (XEN) HVM: VMX enabled (XEN) HVM: Hardware Assisted Paging (HAP) detected (XEN) HVM: HAP page sizes: 4kB, 2MB, 1GB (XEN) Brought up 4 CPUs (XEN) Testing NMI watchdog on all CPUs: ok (XEN) Running stub recovery selftests... (XEN) traps.c:3457: GPF (0000): ffff82d0bffff041 [ffff82d0bffff041] -> ffff82d08034295e (XEN) traps.c:813: Trap 12: ffff82d0bffff040 [ffff82d0bffff040] -> ffff82d08034295e (XEN) traps.c:1215: Trap 3: ffff82d0bffff041 [ffff82d0bffff041] -> ffff82d08034295e (XEN) ACPI sleep modes: S3 (XEN) VPMU: disabled (XEN) mcheck_poll: Machine check polling timer started. (XEN) Dom0 has maximum 624 PIRQs (XEN) NX (Execute Disable) protection active (XEN) ** Building a PVH Dom0 ** (XEN) [VT-D]d0:Hostbridge: skip 0000:00:00.0 map (XEN) Masked UR signaling on 0000:00:00.0 (XEN) Masked UR signaling on 0000:00:01.0 (XEN) Masked UR signaling on 0000:00:01.1 (XEN) Masked UR signaling on 0000:00:02.0 (XEN) Masked UR signaling on 0000:00:03.0 (XEN) [VT-D]d0:PCIe: map 0000:00:05.0 (XEN) Masked VT-d error signaling on 0000:00:05.0 (XEN) [VT-D]d0:PCIe: map 0000:00:05.2 (XEN) [VT-D]d0:PCI: map 0000:00:05.4 (XEN) [VT-D]d0:PCI: map 0000:00:16.0 (XEN) [VT-D]d0:PCI: map 0000:00:19.0 (XEN) [VT-D]d0:PCI: map 0000:00:1a.0 (XEN) [VT-D]d0:PCIe: map 0000:00:1b.0 (XEN) [VT-D]d0:PCI: map 0000:00:1d.0 (XEN) [VT-D]d0:PCI: map 0000:00:1f.0 (XEN) [VT-D]d0:PCI: map 0000:00:1f.2 (XEN) [VT-D]d0:PCI: map 0000:00:1f.3 (XEN) [VT-D]d0:PCIe: map 0000:03:00.0 (XEN) [VT-D]d0:PCIe: map 0000:03:00.1 (XEN) [VT-D]d0:PCIe: map 0000:05:00.0 (XEN) [VT-D]d0:PCIe: map 0000:05:00.3 (XEN) [VT-D]d0:PCIe: map 0000:07:00.0 (XEN) [VT-D]d0:PCI: map 0000:3f:08.0 (XEN) [VT-D]d0:PCIe: map 0000:3f:08.3 (XEN) [VT-D]d0:PCIe: map 0000:3f:08.4 (XEN) [VT-D]d0:PCI: map 0000:3f:09.0 (XEN) [VT-D]d0:PCIe: map 0000:3f:09.3 (XEN) [VT-D]d0:PCIe: map 0000:3f:09.4 (XEN) [VT-D]d0:PCI: map 0000:3f:0a.0 (XEN) [VT-D]d0:PCI: map 0000:3f:0a.1 (XEN) [VT-D]d0:PCI: map 0000:3f:0a.2 (XEN) [VT-D]d0:PCI: map 0000:3f:0a.3 (XEN) [VT-D]d0:PCI: map 0000:3f:0b.0 (XEN) [VT-D]d0:PCI: map 0000:3f:0b.3 (XEN) [VT-D]d0:PCI: map 0000:3f:0c.0 (XEN) [VT-D]d0:PCI: map 0000:3f:0c.1 (XEN) [VT-D]d0:PCI: map 0000:3f:0c.6 (XEN) [VT-D]d0:PCI: map 0000:3f:0c.7 (XEN) [VT-D]d0:PCI: map 0000:3f:0d.0 (XEN) [VT-D]d0:PCI: map 0000:3f:0d.1 (XEN) [VT-D]d0:PCI: map 0000:3f:0d.6 (XEN) [VT-D]d0:PCI: map 0000:3f:0e.0 (XEN) [VT-D]d0:PCI: map 0000:3f:0e.1 (XEN) [VT-D]d0:PCIe: map 0000:3f:0f.0 (XEN) [VT-D]d0:PCIe: map 0000:3f:0f.1 (XEN) [VT-D]d0:PCIe: map 0000:3f:0f.2 (XEN) [VT-D]d0:PCIe: map 0000:3f:0f.3 (XEN) [VT-D]d0:PCIe: map 0000:3f:0f.4 (XEN) [VT-D]d0:PCIe: map 0000:3f:0f.5 (XEN) [VT-D]d0:PCI: map 0000:3f:0f.6 (XEN) [VT-D]d0:PCIe: map 0000:3f:10.0 (XEN) [VT-D]d0:PCIe: map 0000:3f:10.1 (XEN) [VT-D]d0:PCIe: map 0000:3f:10.2 (XEN) [VT-D]d0:PCIe: map 0000:3f:10.3 (XEN) [VT-D]d0:PCIe: map 0000:3f:10.4 (XEN) [VT-D]d0:PCIe: map 0000:3f:10.5 (XEN) [VT-D]d0:PCIe: map 0000:3f:10.6 (XEN) [VT-D]d0:PCIe: map 0000:3f:10.7 (XEN) [VT-D]d0:PCI: map 0000:3f:11.0 (XEN) [VT-D]d0:PCI: map 0000:3f:13.0 (XEN) [VT-D]d0:PCI: map 0000:3f:13.1 (XEN) [VT-D]d0:PCI: map 0000:3f:13.4 (XEN) [VT-D]d0:PCI: map 0000:3f:13.5 (XEN) [VT-D]d0:PCI: map 0000:3f:13.6 (XEN) [VT-D]iommu_enable_translation: iommu->reg = ffff82c00021b000 (XEN) Before DMA_GCMD_TE ( The hang seems to happen when writing DMA_GCMD_TE to the global command register, which enables the DMA remapping. After that the box is completely unresponsive, not even the watchdog is working. Thanks, Roger. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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