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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 Tue, Feb 16, 2010 at 09:49:42AM -0800, 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
> }
>
What's the full serial console output when using the grub config above?
-- Pasi
>
> 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-tp27059994p27612307.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
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