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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Kernel 2.6.31.6 pv_ops freeze on start
On Wed, Feb 24, 2010 at 12:39:28AM -0800, Fantu wrote: > > I have reupdate xen and kernel and redo debug with also dummy=dummy and this > is the sol log: http://old.nabble.com/file/p27714129/sol2.txt sol2.txt > (XEN) irq.c:1182:d0 Cannot bind IRQ 0 to guest. Will not share with others. Does that ring any bells? IRQ 0 is the system timer.. -- Pasi > Fantu wrote: > > > > also with this not boot: > > menuentry "Xen 4 hg-un DEBUG, linux 2.6.31.6" { > > set root=(hd0,1) > > multiboot /boot/xen-4.gz dummy=dummy dom0_mem=1024M iommu=passthrough,pv > > loglvl=all guest_loglvl=all sync_console console_to_ring com2=56700,8n1 > > console=com2,vga > > module /boot/vmlinuz-2.6.31.6-xen dummy=dummy root=LABEL=root-raid ro > > console=hvc0 initcall_debug debug loglevel=10 earlyprintk=xen > > module /boot/initrd.img-2.6.31.6-xen > > } > > > > Pasi Kärkkäinen wrote: > >> > >> On Tue, Feb 16, 2010 at 05:56:35AM -0800, Fantu wrote: > >>> > >>> I have download update xen from unstable, kernel from git and i try to > >>> apply > >>> patch but it seems already present > >>> I have try to start and log with SOL, this is the full output: > >>> http://old.nabble.com/file/p27608625/logsol.txt logsol.txt > >>> The entry in grub for debug: > >>> menuentry "Xen 4 hg-un DEBUG, linux 2.6.31.6" { > >>> set root=(hd0,1) > >>> multiboot /boot/xen-4.gz dom0_mem=1024M iommu=passthrough,pv loglvl=all > >>> guest_loglvl=all sync_console console_to_ring com2=56700,8n1 > >>> console=com2,vga > >>> module /boot/vmlinuz-2.6.31.6-xen root=LABEL=root-raid ro console=hvc0 > >>> initcall_debug debug loglevel=10 earlyprintk=xen > >>> module /boot/initrd.img-2.6.31.6-xen > >>> } > >> > >> So you're using GRUB2.. > >> > >> Please check this wiki page: > >> http://wiki.xensource.com/xenwiki/XenCommonProblems > >> > >> There's a chapter called "Booting Xen with GRUB2 fails?". > >> > >> -- Pasi > >> > >>> > >>> Jeremy Fitzhardinge wrote: > >>> > > >>> > On 01/08/2010 06:16 AM, Fantu wrote: > >>> >> Thanks, i have do, this is all the i see with sol before black screen > >>> >> freeze > >>> >> on vga: > >>> >> > >>> >> __ __ _ _ ___ ___ _ > >>> >> \ \/ /___ _ __ | || | / _ \ / _ \ _ __ ___/ | _ __ _ __ > >>> ___ > >>> >> \ // _ \ '_ \ | || |_| | | | | | |__| '__/ __| |__| '_ \| '__/ _ > >>> \ > >>> >> / \ __/ | | | |__ _| |_| | |_| |__| | | (__| |__| |_) | | | > >>> __/ > >>> >> /_/\_\___|_| |_| |_|(_)___(_)___/ |_| \___|_| | .__/|_| > >>> \___| > >>> >> |_| > >>> >> (XEN) Xen version 4.0.0-rc1-pre (root@) (gcc version 4.3.2 (Debian > >>> >> 4.3.2-1.1) )0 > >>> >> (XEN) Latest ChangeSet: Tue Jan 05 08:40:18 2010 +0000 > >>> 20756:4feec90815a0 > >>> >> (XEN) Command line: dom0_mem=512M iommu=passthrough,pv com2=57600,8n1 > >>> >> console=ca > >>> >> (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 - 00000000000a0000 (usable) > >>> >> (XEN) 0000000000100000 - 00000000cf699000 (usable) > >>> >> (XEN) 00000000cf699000 - 00000000cf6af000 (reserved) > >>> >> (XEN) 00000000cf6af000 - 00000000cf6ce000 (ACPI data) > >>> >> (XEN) 00000000cf6ce000 - 00000000d0000000 (reserved) > >>> >> (XEN) 00000000e0000000 - 00000000f0000000 (reserved) > >>> >> (XEN) 00000000fe000000 - 0000000100000000 (reserved) > >>> >> (XEN) 0000000100000000 - 0000000330000000 (usable) > >>> >> (XEN) ACPI: RSDP 000F0EC0, 0024 (r2 DELL ) > >>> >> (XEN) ACPI: XSDT 000F0FC4, 009C (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: FACP CF6C3F9C, 00F4 (r3 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: DSDT CF6AF000, 3CF2 (r1 DELL PE_SC3 1 INTL > >>> >> 20050624) > >>> >> (XEN) ACPI: FACS CF6C6000, 0040 > >>> >> (XEN) ACPI: APIC CF6C3478, 015E (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: SPCR CF6C35D8, 0050 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: HPET CF6C362C, 0038 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: DMAR CF6C3668, 01D0 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: MCFG CF6C38C4, 003C (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: WD__ CF6C3904, 0134 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: SLIC CF6C3A3C, 0024 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: ERST CF6B2E74, 0270 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: HEST CF6B30E4, 03A8 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: BERT CF6B2CF4, 0030 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: EINJ CF6B2D24, 0150 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: SRAT CF6C3BC0, 0370 (r1 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: TCPA CF6C3F34, 0064 (r2 DELL PE_SC3 1 DELL > >>> >> > >>> >> 1) > >>> >> (XEN) ACPI: SSDT CF6C7000, 0F08 (r1 INTEL PPM RCM 80000001 INTL > >>> >> 20061109) > >>> >> (XEN) System RAM: 12053MB (12342340kB) > >>> >> (XEN) SRAT: PXM 1 -> APIC 16 -> Node 0 > >>> >> (XEN) SRAT: PXM 1 -> APIC 18 -> Node 0 > >>> >> (XEN) SRAT: PXM 1 -> APIC 20 -> Node 0 > >>> >> (XEN) SRAT: PXM 1 -> APIC 22 -> Node 0 > >>> >> (XEN) SRAT: Node 0 PXM 1 0-d0000000 > >>> >> (XEN) SRAT: Node 0 PXM 1 100000000-330000000 > >>> >> (XEN) NUMA: Using 20 for the hash shift. > >>> >> (XEN) Domain heap initialised > >>> >> (XEN) found SMP MP-table at 000fe710 > >>> >> (XEN) DMI 2.6 present. > >>> >> (XEN) Using APIC driver default > >>> >> (XEN) ACPI: PM-Timer IO Port: 0x808 > >>> >> (XEN) ACPI: ACPI SLEEP INFO: pm1x_cnt[804,0], pm1x_evt[800,0] > >>> >> (XEN) ACPI: wakeup_vec[cf6c600c], vec_size[20] > >>> >> (XEN) ACPI: Local APIC address 0xfee00000 > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x10] enabled) > >>> >> (XEN) Processor #16 7:10 APIC version 21 > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x12] enabled) > >>> >> (XEN) Processor #18 7:10 APIC version 21 > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x14] enabled) > >>> >> (XEN) Processor #20 7:10 APIC version 21 > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x16] enabled) > >>> >> (XEN) Processor #22 7:10 APIC version 21 > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x05] lapic_id[0x24] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x06] lapic_id[0x25] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x07] lapic_id[0x26] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x08] lapic_id[0x27] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x09] lapic_id[0x28] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x0a] lapic_id[0x29] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x0b] lapic_id[0x2a] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x0c] lapic_id[0x2b] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x0d] lapic_id[0x2c] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x0e] lapic_id[0x2d] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x0f] lapic_id[0x2e] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x10] lapic_id[0x2f] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x11] lapic_id[0x30] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x12] lapic_id[0x31] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x13] lapic_id[0x32] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x14] lapic_id[0x33] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x15] lapic_id[0x34] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x16] lapic_id[0x35] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x17] lapic_id[0x36] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x18] lapic_id[0x37] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x19] lapic_id[0x38] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x1a] lapic_id[0x39] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x1b] lapic_id[0x3a] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x1c] lapic_id[0x3b] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x1d] lapic_id[0x3c] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x1e] lapic_id[0x3d] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x1f] lapic_id[0x3e] disabled) > >>> >> (XEN) ACPI: LAPIC (acpi_id[0x20] lapic_id[0x3f] disabled) > >>> >> (XEN) ACPI: LAPIC_NMI (acpi_id[0xff] high edge lint[0x1]) > >>> >> (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[0x01] address[0xfec80000] gsi_base[32]) > >>> >> (XEN) IOAPIC[1]: apic_id 1, version 32, address 0xfec80000, GSI 32-55 > >>> >> (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: 0x8086a301 base: 0xfed00000 > >>> >> (XEN) [VT-D]dmar.c:548: Host address width 40 > >>> >> (XEN) [VT-D]dmar.c:557: found ACPI_DMAR_DRHD: > >>> >> (XEN) [VT-D]dmar.c:374: dmaru->address = fed90000 > >>> >> (XEN) [VT-D]dmar.c:386: flags: INCLUDE_ALL > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7c8000 end_address > >>> >> cf7dffff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1a.7 > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1d.7 > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7b1000 end_address > >>> >> cf7bffff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1a.0 > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1a.1 > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1a.2 > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1d.0 > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1d.1 > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1d.2 > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7a1000 end_address > >>> >> cf7a1fff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1a.0 > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7a3000 end_address > >>> >> cf7a3fff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1a.1 > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7a5000 end_address > >>> >> cf7a5fff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1d.0 > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7a7000 end_address > >>> >> cf7a7fff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1d.1 > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7a9000 end_address > >>> >> cf7a9fff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1d.2 > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7c0000 end_address > >>> >> cf7c0fff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1a.7 > >>> >> (XEN) [VT-D]dmar.c:561: found ACPI_DMAR_RMRR: > >>> >> (XEN) [VT-D]dmar.c:446: RMRR region: base_addr cf7c2000 end_address > >>> >> cf7c2fff > >>> >> (XEN) [VT-D]dmar.c:326: endpoint: 0:1d.7 > >>> >> (XEN) [VT-D]dmar.c:565: found ACPI_DMAR_ATSR: > >>> >> (XEN) [VT-D]dmar.c:476: atsru->all_ports: 0 > >>> >> (XEN) [VT-D]dmar.c:314: bridge: 0:1.0 start = 0 sec = 1 sub = 1 > >>> >> (XEN) [VT-D]dmar.c:314: bridge: 0:3.0 start = 0 sec = 3 sub = 3 > >>> >> (XEN) [VT-D]dmar.c:314: bridge: 0:4.0 start = 0 sec = 4 sub = 4 > >>> >> (XEN) [VT-D]dmar.c:314: bridge: 0:5.0 start = 0 sec = 5 sub = 5 > >>> >> (XEN) [VT-D]dmar.c:314: bridge: 0:7.0 start = 0 sec = 6 sub = 6 > >>> >> (XEN) [VT-D]dmar.c:314: bridge: 0:9.0 start = 0 sec = 7 sub = 7 > >>> >> (XEN) [VT-D]dmar.c:314: bridge: 0:a.0 start = 0 sec = 2 sub = 2 > >>> >> (XEN) PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - > >>> 255 > >>> >> (XEN) PCI: MCFG area at e0000000 reserved in E820 > >>> >> (XEN) Using ACPI (MADT) for SMP configuration information > >>> >> (XEN) Using scheduler: SMP Credit Scheduler (credit) > >>> >> (XEN) Initializing CPU#0 > >>> >> (XEN) Detected 1995.045 MHz processor. > >>> >> (XEN) Initing memory sharing. > >>> >> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K > >>> >> (XEN) CPU: L2 cache: 256K > >>> >> (XEN) CPU: L3 cache: 4096K > >>> >> (XEN) CPU: Physical Processor ID: 1 > >>> >> (XEN) CPU: Processor Core ID: 0 > >>> >> (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) HVM: ASIDs enabled. > >>> >> (XEN) HVM: VMX enabled > >>> >> (XEN) HVM: Hardware Assisted Paging detected. > >>> >> (XEN) Intel machine check reporting enabled on CPU#0. > >>> >> (XEN) CPU0: Thermal monitoring enabled (TM1) > >>> >> (XEN) [VT-D]iommu.c:1062: drhd->address = fed90000 > >>> >> (XEN) [VT-D]iommu.c:1063: iommu->reg = ffff82c3fff57000 > >>> >> (XEN) Intel VT-d Snoop Control supported. > >>> >> (XEN) Intel VT-d DMA Passthrough supported. > >>> >> (XEN) Intel VT-d Queued Invalidation supported. > >>> >> (XEN) Intel VT-d Interrupt Remapping not supported. > >>> >> (XEN) I/O virtualisation enabled > >>> >> (XEN) I/O virtualisation for PV guests enabled > >>> >> (XEN) CPU0: Intel(R) Xeon(R) CPU E5504 @ 2.00GHz stepping > >>> 05 > >>> >> (XEN) Booting processor 1/18 eip 8c000 > >>> >> (XEN) Initializing CPU#1 > >>> >> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K > >>> >> (XEN) CPU: L2 cache: 256K > >>> >> (XEN) CPU: L3 cache: 4096K > >>> >> (XEN) CPU: Physical Processor ID: 1 > >>> >> (XEN) CPU: Processor Core ID: 1 > >>> >> (XEN) HVM: ASIDs enabled. > >>> >> (XEN) Intel machine check reporting enabled on CPU#1. > >>> >> (XEN) CPU1: Thermal monitoring enabled (TM1) > >>> >> (XEN) CPU1: Intel(R) Xeon(R) CPU E5504 @ 2.00GHz stepping > >>> 05 > >>> >> (XEN) Booting processor 2/20 eip 8c000 > >>> >> (XEN) Initializing CPU#2 > >>> >> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K > >>> >> (XEN) CPU: L2 cache: 256K > >>> >> (XEN) CPU: L3 cache: 4096K > >>> >> (XEN) CPU: Physical Processor ID: 1 > >>> >> (XEN) CPU: Processor Core ID: 2 > >>> >> (XEN) HVM: ASIDs enabled. > >>> >> (XEN) Intel machine check reporting enabled on CPU#2. > >>> >> (XEN) CPU2: Thermal monitoring enabled (TM1) > >>> >> (XEN) CPU2: Intel(R) Xeon(R) CPU E5504 @ 2.00GHz stepping > >>> 05 > >>> >> (XEN) Booting processor 3/22 eip 8c000 > >>> >> (XEN) Initializing CPU#3 > >>> >> (XEN) CPU: L1 I cache: 32K, L1 D cache: 32K > >>> >> (XEN) CPU: L2 cache: 256K > >>> >> (XEN) CPU: L3 cache: 4096K > >>> >> (XEN) CPU: Physical Processor ID: 1 > >>> >> (XEN) CPU: Processor Core ID: 3 > >>> >> (XEN) HVM: ASIDs enabled. > >>> >> (XEN) Intel machine check reporting enabled on CPU#3. > >>> >> (XEN) CPU3: Thermal monitoring enabled (TM1) > >>> >> (XEN) CPU3: Intel(R) Xeon(R) CPU E5504 @ 2.00GHz stepping > >>> 05 > >>> >> (XEN) Total of 4 processors activated. > >>> >> (XEN) ENABLING IO-APIC IRQs > >>> >> (XEN) -> Using new ACK method > >>> >> (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1 > >>> >> (XEN) checking TSC synchronization across 4 CPUs: passed. > >>> >> (XEN) Platform timer is 14.318MHz HPET > >>> >> ( > >>> >> > >>> > > >>> > Ah, I saw the same when using a IPMI SOL implementation; this is the > >>> > point when the serial port becomes interrupt-driven, and there's > >>> > something wrong with interrupts. The fix is this patch from Konrad: > >>> > > >>> > diff -r 8f304c003af4 -r 7863747c5061 xen/drivers/char/ns16550.c > >>> > --- a/xen/drivers/char/ns16550.c Wed Dec 09 10:59:31 2009 +0000 > >>> > +++ b/xen/drivers/char/ns16550.c Thu Dec 10 11:03:25 2009 -0800 > >>> > @@ -39,6 +39,7 @@ > >>> > /* UART with no IRQ line: periodically-polled I/O. */ > >>> > struct timer timer; > >>> > unsigned int timeout_ms; > >>> > + int probing, intr_works; > >>> > } ns16550_com[2] = { { 0 } }; > >>> > > >>> > /* Register offsets */ > >>> > @@ -127,6 +128,13 @@ > >>> > struct serial_port *port = dev_id; > >>> > struct ns16550 *uart = port->uart; > >>> > > >>> > + if (uart->intr_works == 0) > >>> > + { > >>> > + uart->probing = 0; > >>> > + uart->intr_works = 1; > >>> > + stop_timer(&uart->timer); > >>> > + } > >>> > + > >>> > while ( !(ns_read_reg(uart, IIR)& IIR_NOINT) ) > >>> > { > >>> > char lsr = ns_read_reg(uart, LSR); > >>> > @@ -143,6 +151,15 @@ > >>> > struct ns16550 *uart = port->uart; > >>> > struct cpu_user_regs *regs = guest_cpu_user_regs(); > >>> > > >>> > + if ( uart->intr_works ) > >>> > + return; /* Interrupts work - no more polling */ > >>> > + > >>> > + if ( uart->probing ) { > >>> > + uart->probing = 0; > >>> > + if ( (ns_read_reg(uart, LSR)& 0xff) == 0xff ) > >>> > + return; /* All bits set - probably no UART present */ > >>> > + } > >>> > + > >>> > while ( ns_read_reg(uart, LSR)& LSR_DR ) > >>> > serial_rx_interrupt(port, regs); > >>> > > >>> > @@ -230,15 +247,14 @@ > >>> > > >>> > serial_async_transmit(port); > >>> > > >>> > + init_timer(&uart->timer, ns16550_poll, port, 0); > >>> > + /* Calculate time to fill RX FIFO and/or empty TX FIFO for > >>> polling. > >>> > */ > >>> > + bits = uart->data_bits + uart->stop_bits + !!uart->parity; > >>> > + uart->timeout_ms = max_t( > >>> > + unsigned int, 1, (bits * port->tx_fifo_size * 1000) / > >>> > uart->baud); > >>> > + > >>> > if ( uart->irq == 0 ) > >>> > - { > >>> > - /* Polled mode. Calculate time to fill RX FIFO and/or empty > >>> TX > >>> > FIFO. */ > >>> > - bits = uart->data_bits + uart->stop_bits + !!uart->parity; > >>> > - uart->timeout_ms = max_t( > >>> > - unsigned int, 1, (bits * port->tx_fifo_size * 1000) / > >>> > uart->baud); > >>> > - init_timer(&uart->timer, ns16550_poll, port, 0); > >>> > set_timer(&uart->timer, NOW() + > >>> MILLISECS(uart->timeout_ms)); > >>> > - } > >>> > else > >>> > { > >>> > uart->irqaction.handler = ns16550_interrupt; > >>> > @@ -252,6 +268,12 @@ > >>> > > >>> > /* Enable receive and transmit interrupts. */ > >>> > ns_write_reg(uart, IER, IER_ERDAI | IER_ETHREI); > >>> > + > >>> > + /* Do a timed write to make sure we are getting interrupts. > >>> */ > >>> > + uart->probing = 1; > >>> > + uart->intr_works = 0; > >>> > + ns_write_reg(uart, THR, 0xff); > >>> > + set_timer(&uart->timer, NOW() + MILLISECS(uart->timeout_ms)); > >>> > } > >>> > } > >>> > > >>> > > >>> > J > >>> > > >>> > > >>> > _______________________________________________ > >>> > Xen-devel mailing list > >>> > Xen-devel@xxxxxxxxxxxxxxxxxxx > >>> > http://lists.xensource.com/xen-devel > >>> > > >>> > > >>> > >>> -- > >>> View this message in context: > >>> http://old.nabble.com/Kernel-2.6.31.6-pv_ops-freeze-on-start-tp27059994p27608625.html > >>> Sent from the Xen - Dev mailing list archive at Nabble.com. > >>> > >>> > >>> _______________________________________________ > >>> Xen-devel mailing list > >>> Xen-devel@xxxxxxxxxxxxxxxxxxx > >>> http://lists.xensource.com/xen-devel > >> > >> _______________________________________________ > >> Xen-devel mailing list > >> Xen-devel@xxxxxxxxxxxxxxxxxxx > >> http://lists.xensource.com/xen-devel > >> > >> > > > > > > -- > View this message in context: > http://old.nabble.com/Kernel-2.6.31.6-pv_ops-freeze-on-start-tp27059994p27714129.html > Sent from the Xen - Dev mailing list archive at Nabble.com. > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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