[Xen-users] Config to set CPU affinity and distribute interrupts

["ITZIAR BALENCIAGA" <ibalenciaga@xxxxxxxx>]

Hi,

 

I have some problems to configure the xen I've installed (3.3.1). The computer is a Intel Core 2 Duo, I'm using Ubuntu 8.10 and have linux in my dom0 and winxp pro in my domU.

I have two cores and I'd like to set the affinity of dom0 to cpu0 and domU to cpu1 but I haven't find the way of making this permanent. I've set cpus=1 in the domU config file and everytime I start my computer I make:

xm vcpu-set 0 1

xm vcpu-pin  0 0 0

After making this I make xm vcpu-list and I can see:

Name          ID VCPU CPU State Time(s) CPU Affinity

Domain-0 0      0      0 r--      51.5 0

Domain-0    0      1      - --p      19.4   any   cpu

winxp             1      0      1 r--      9.8 1

How can I get this without having to enter the previous commands everytime I restart my computer?

 

Another problem that I have is that when I run my domU everything goes fine but I can't go back to my dom0 unless I shut it down. Windows starts in full screen and the only way of going back is by pressing Alt+Tab. I can see Linux just for a second and then the Windows screen appears. Why could this happen? I'll let some info about my configuration.

CPUINFO:

processor : 0

vendor_id : GenuineIntel

cpu family : 6

model : 15

model name : Intel(R) Core(TM)2 CPU L7400 @ 1.50GHz

stepping : 6

cpu MHz : 1500.120

cache size : 4096 KB

fdiv_bug : no

hlt_bug : no

f00f_bug : no

coma_bug : no

fpu : yes

fpu_exception : yes

cpuid level : 10

wp : yes

flags : fpu de tsc msr pae cx8 apic mtrr cmov pat clflush acpi mmx fxsr sse sse2 ss ht constant_tsc up pni est

bogomips : 3001.82

 

DMESG:

(XEN) Xen version 3.3.1 (root@) (gcc versión 4.3.2 (Ubuntu 4.3.2-1ubuntu12) ) Fri Apr 3 12:12:09 CEST 2009

(XEN) Latest ChangeSet: unavailable

(XEN) Command line: dom0_mem=1024000

(XEN) Video information:

(XEN) VGA is text mode 80x25, font 8x16

(XEN) VBE/DDC methods: none; EDID transfer time: 0 seconds

(XEN) EDID info not retrieved because no DDC retrieval method detected

(XEN) Disc information:

(XEN) Found 1 MBR signatures

(XEN) Found 1 EDD information structures

(XEN) Xen-e820 RAM map:

(XEN) 0000000000000000 - 000000000009dc00 (usable)

(XEN) 000000000009dc00 - 00000000000a0000 (reserved)

(XEN) 00000000000e4000 - 0000000000100000 (reserved)

(XEN) 0000000000100000 - 000000007f650000 (usable)

(XEN) 000000007f650000 - 000000007f660000 (ACPI data)

(XEN) 000000007f660000 - 000000007f661000 (ACPI NVS)

(XEN) 000000007f661000 - 0000000080000000 (reserved)

(XEN) 00000000e0000000 - 00000000f0000000 (reserved)

(XEN) 00000000fec00000 - 00000000fec10000 (reserved)

(XEN) 00000000fee00000 - 00000000fee01000 (reserved)

(XEN) 00000000ff000000 - 0000000100000000 (reserved)

(XEN) System RAM: 2037MB (2086836kB)

(XEN) ACPI: RSDP 000F6CF0, 0024 (r2 PTLTD )

(XEN) ACPI: XSDT 7F658B20, 008C (r1 PTLTD XSDT 6040000 LTP 0)

(XEN) ACPI: FACP 7F65FD48, 00F4 (r3 INTEL CALISTGA 6040000 ALAN 1)

(XEN) ACPI: DSDT 7F65A2FE, 59D6 (r1 KTRON MCAL 6040000 INTL 20060113)

(XEN) ACPI: FACS 7F660FC0, 0040

(XEN) ACPI: APIC 7F65FE3C, 0068 (r1 INTEL CALISTGA 6040000 LOHR 5A)

(XEN) ACPI: HPET 7F65FEA4, 0038 (r1 INTEL CALISTGA 6040000 LOHR 5A)

(XEN) ACPI: MCFG 7F65FEDC, 003C (r1 INTEL CALISTGA 6040000 LOHR 5A)

(XEN) ACPI: TCPA 7F65FF18, 0032 (r1 PTLTD CALISTGA 6040000 PTL 1)

(XEN) ACPI: TMOR 7F65FF4A, 0026 (r1 PTLTD 6040000 PTL 3)

(XEN) ACPI: APIC 7F65FF70, 0068 (r1 PTLTD APIC 6040000 LTP 0)

(XEN) ACPI: BOOT 7F65FFD8, 0028 (r1 PTLTD $SBFTBL$ 6040000 LTP 1)

(XEN) ACPI: SSDT 7F659CAF, 064F (r1 SataRe SataPri 1000 INTL 20050624)

(XEN) ACPI: SSDT 7F659613, 069C (r1 SataRe SataSec 1000 INTL 20050624)

(XEN) ACPI: SSDT 7F659138, 025F (r1 PmRef Cpu0Tst 3000 INTL 20050624)

(XEN) ACPI: SSDT 7F659092, 00A6 (r1 PmRef Cpu1Tst 3000 INTL 20050624)

(XEN) ACPI: SSDT 7F658BAC, 04E6 (r1 PmRef CpuPm 3000 INTL 20050624)

(XEN) ACPI: BIOS bug: multiple APIC/MADT found, using 0

(XEN) ACPI: If "acpi_apic_instance=2" works better, notify linux-acpi@xxxxxxxxxxxxxxx

(XEN) Xen heap: 9MB (9752kB)

(XEN) Domain heap initialised

(XEN) Processor #0 6:15 APIC version 20

(XEN) Processor #1 6:15 APIC version 20

(XEN) IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23

(XEN) Enabling APIC mode: Flat. Using 1 I/O APICs

(XEN) Using scheduler: SMP Credit Scheduler (credit)

(XEN) Detected 1500.160 MHz processor.

(XEN) HVM: VMX enabled

(XEN) CPU0: Intel(R) Core(TM)2 CPU L7400 @ 1.50GHz stepping 06

(XEN) Booting processor 1/1 eip 8c000

(XEN) CPU1: Intel(R) Core(TM)2 CPU L7400 @ 1.50GHz stepping 06

(XEN) Total of 2 processors activated.

(XEN) ENABLING IO-APIC IRQs

(XEN) -> Using new ACK method

(XEN) checking TSC synchronization across 2 CPUs: passed.

(XEN) Platform timer is 14.318MHz HPET

(XEN) Brought up 2 CPUs

(XEN) I/O virtualisation disabled

(XEN) *** LOADING DOMAIN 0 ***

(XEN) Xen kernel: 32-bit, PAE, lsb

(XEN) Dom0 kernel: 32-bit, PAE, lsb, paddr 0xc0100000 -> 0xc04994dc

(XEN) PHYSICAL MEMORY ARRANGEMENT:

(XEN) Dom0 alloc.: 000000003c000000->000000003e000000 (247808 pages to be allocated)

(XEN) VIRTUAL MEMORY ARRANGEMENT:

(XEN) Loaded kernel: c0100000->c04994dc

(XEN) Init. ramdisk: c049a000->c1787000

(XEN) Phys-Mach map: c1787000->c1881000

(XEN) Start info: c1881000->c1881474

(XEN) Page tables: c1882000->c1895000

(XEN) Boot stack: c1895000->c1896000

(XEN) TOTAL: c0000000->c1c00000

(XEN) ENTRY ADDRESS: c0100000

(XEN) Dom0 has maximum 2 VCPUs

(XEN) Scrubbing Free RAM: ..........done.

(XEN) Xen trace buffers: disabled

(XEN) Std. Loglevel: Errors and warnings

(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)

(XEN) Xen is relinquishing VGA console.

(XEN) *** Serial input -> DOM0 (type \047CTRL-a\047 three times to switch input to Xen)

(XEN) Freed 100kB init memory.

(XEN) traps.c:2171:d0 Domain attempted WRMSR 0000019a from 00000000:00000002 to 00000000:00000000.

(XEN) traps.c:2171:d0 Domain attempted WRMSR 0000019a from 00000000:00000002 to 00000000:00000000.

(XEN) \047q\047 pressed -> dumping domain info (now=0xA6:793D9493)

(XEN) General information for domain 0:

(XEN) refcnt=3 nr_pages=247296 xenheap_pages=5 dirty_cpus={0}

(XEN) handle=00000000-0000-0000-0000-000000000000 vm_assist=0000000d

(XEN) Rangesets belonging to domain 0:

(XEN) Interrupts { 0-255 }

(XEN) I/O Memory { 0-febff, fec01-fedff, fee01-ffffffff }

(XEN) I/O Ports { 0-1f, 22-3f, 44-60, 62-9f, a2-cfb, d00-ffff }

(XEN) Memory pages belonging to domain 0:

(XEN) DomPage list too long to display

(XEN) XenPage 00000bed: caf=80000002, taf=e8000002

(XEN) XenPage 00000bec: caf=80000001, taf=e8000001

(XEN) XenPage 00000beb: caf=80000001, taf=e8000001

(XEN) XenPage 00000bea: caf=80000001, taf=e8000001

(XEN) XenPage 00000be9: caf=80000002, taf=e8000002

(XEN) VCPU information and callbacks for domain 0:

(XEN) VCPU0: CPU0 [has=T] flags=0 upcall_pend = 00, upcall_mask = 00 dirty_cpus={0} cpu_affinity={0}

(XEN) 100 Hz periodic timer (period 10 ms)

(XEN) Notifying guest (virq 1, port 0, stat 0/-1/0)

(XEN) VCPU1: CPU1 [has=F] flags=2 upcall_pend = 00, upcall_mask = 01 dirty_cpus={} cpu_affinity={0-31}

(XEN) 100 Hz periodic timer (period 10 ms)

(XEN) Notifying guest (virq 1, port 0, stat 0/-1/0)

(XEN) General information for domain 1:

(XEN) refcnt=3 nr_pages=264159 xenheap_pages=5 dirty_cpus={1}

(XEN) handle=1d4c4c87-db5b-083a-0907-a1d34bad46a3 vm_assist=00000000

(XEN) paging assistance: shadow refcounts translate external

(XEN) Rangesets belonging to domain 1:

(XEN) Interrupts { }

(XEN) I/O Memory { }

(XEN) I/O Ports { }

(XEN) Memory pages belonging to domain 1:

(XEN) DomPage list too long to display

(XEN) XenPage 000001cf: caf=80000001, taf=e8000001

(XEN) XenPage 000001ce: caf=80000001, taf=e8000001

(XEN) XenPage 000001cd: caf=80000001, taf=e8000001

(XEN) XenPage 000001cc: caf=80000001, taf=e8000001

(XEN) XenPage 000001f2: caf=80000001, taf=e8000001

(XEN) VCPU information and callbacks for domain 1:

(XEN) VCPU0: CPU1 [has=T] flags=0 upcall_pend = 00, upcall_mask = 00 dirty_cpus={1} cpu_affinity={1}

(XEN) paging assistance: shadowed 2-on-3

(XEN) No periodic timer

(XEN) Notifying guest (virq 1, port 0, stat 0/-1/0)

 

WINXP.HVM (uncommented lines)

kernel = "/usr/lib/xen/boot/hvmloader"

builder='hvm'

memory = 1024

name = "winxp"

vcpus=1

cpus = "1"

vif = [ 'type=ioemu, bridge=xenbr0' ]

disk = [ 'phy:/dev/sda,ioemu:hda,w' ]

device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'

boot="c"

sdl=1

opengl=1

vnc=0

vncpasswd=''

stdvga=0

serial='pty'

 

Thanks,

 

Itziar

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