Re: [Xen-devel] X86_64 and 4GB RAM using Flat Memory Model?

["John Hannfield" <hal9020@xxxxxxxxx>]

Hi Kier,

Thanks for the quick reply.

> Post the output of 'xm dmesg'.
Here it is below.
It reports 3GB of RAM, though BIOS says 4 GB, and Debian etch boots
with 4 GB.


-------
http://www.cl.cam.ac.uk/netos/xen
University of Cambridge Computer Laboratory

Xen version 3.0.3-0 (root@xxxxxxxxxxxx) (gcc version 4.1.2 20061115
(prerelease) (Debian 4.1.1-21)) Sun Mar  4 19:23:49 GMT 2007
Latest ChangeSet: unavailable

(XEN) Command line: /boot/xen-3.0.3-0.gz dom0_mem=262144
com1=115200,8n1 console=vga,com1
(XEN) Physical RAM map:
(XEN)  0000000000000000 - 000000000009dc00 (usable)
(XEN)  0000000000100000 - 00000000bfff0000 (usable)
(XEN) System RAM: 3071MB (3145268kB)
(XEN) Xen heap: 14MB (14384kB)
(XEN) found SMP MP-table at 000ff780
(XEN) DMI present.
(XEN) Using APIC driver default
(XEN) ACPI: RSDP (v002 ACPIAM                                ) @
0x00000000000f9480
(XEN) ACPI: XSDT (v001 A M I  OEMXSDT  0x12000614 MSFT 0x00000097) @
0x00000000bfff0100
(XEN) ACPI: FADT (v003 A M I  OEMFACP  0x12000614 MSFT 0x00000097) @
0x00000000bfff0290
(XEN) ACPI: MADT (v001 A M I  OEMAPIC  0x12000614 MSFT 0x00000097) @
0x00000000bfff0390
(XEN) ACPI: SPCR (v001 A M I  OEMSPCR  0x12000614 MSFT 0x00000097) @
0x00000000bfff0410
(XEN) ACPI: SLIT (v001 A M I  OEMSLIT  0x12000614 MSFT 0x00000097) @
0x00000000bfff04a0
(XEN) ACPI: OEMB (v001 A M I  AMI_OEM  0x12000614 MSFT 0x00000097) @
0x00000000bfffe040
(XEN) ACPI: HPET (v001 A M I  OEMHPET0 0x12000614 MSFT 0x00000097) @
0x00000000bfff54d0
(XEN) ACPI: SRAT (v001 AMD    HAMMER   0x00000001 AMD  0x00000001) @
0x00000000bfff5510
(XEN) ACPI: SSDT (v001 A M I  POWERNOW 0x00000001 AMD  0x00000001) @
0x00000000bfff5620
(XEN) ACPI: DSDT (v001  DATER DATER111 0x00000111 INTL 0x20051117) @
0x0000000000000000
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
(XEN) Processor #0 15:1 APIC version 16
(XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
(XEN) Processor #1 15:1 APIC version 16
(XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x02] enabled)
(XEN) Processor #2 15:1 APIC version 16
(XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x03] enabled)
(XEN) Processor #3 15:1 APIC version 16
(XEN) ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0])
(XEN) IOAPIC[0]: apic_id 4, version 17, address 0xfec00000, GSI 0-23
(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: INT_SRC_OVR (bus 0 bus_irq 14 global_irq 14 high edge)
(XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 15 global_irq 15 high edge)
(XEN) ACPI: IRQ0 used by override.
(XEN) ACPI: IRQ2 used by override.
(XEN) ACPI: IRQ9 used by override.
(XEN) ACPI: IRQ14 used by override.
(XEN) ACPI: IRQ15 used by override.
(XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
(XEN) ACPI: HPET id: 0x10de8201 base: 0xfed00000
(XEN) Using ACPI (MADT) for SMP configuration information
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Initializing CPU#0
(XEN) Detected 1800.093 MHz processor.
(XEN) CPU0: AMD Flush Filter disabled
(XEN) CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
(XEN) CPU: L2 Cache: 1024K (64 bytes/line)
(XEN) CPU 0(2) -> Core 0
(XEN) AMD SVM Extension is enabled for cpu 0.
(XEN) Intel machine check architecture supported.
(XEN) Intel machine check reporting enabled on CPU#0.
(XEN) CPU0: AMD Dual-Core AMD Opteron(tm) Processor 2210 stepping 02
(XEN) Booting processor 1/1 eip 90000
(XEN) Initializing CPU#1
(XEN) CPU1: AMD Flush Filter disabled
(XEN) CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
(XEN) CPU: L2 Cache: 1024K (64 bytes/line)
(XEN) CPU 1(2) -> Core 1
(XEN) AMD: Disabling C1 Clock Ramping Node #0
(XEN) AMD: Disabling C1 Clock Ramping Node #1
(XEN) AMD SVM Extension is enabled for cpu 1.
(XEN) Intel machine check architecture supported.
(XEN) Intel machine check reporting enabled on CPU#1.
(XEN) CPU1: AMD Dual-Core AMD Opteron(tm) Processor 2210 stepping 02
(XEN) Booting processor 2/2 eip 90000
(XEN) Initializing CPU#2
(XEN) CPU2: AMD Flush Filter disabled
(XEN) CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
(XEN) CPU: L2 Cache: 1024K (64 bytes/line)
(XEN) CPU 2(2) -> Core 0
(XEN) AMD SVM Extension is enabled for cpu 2.
(XEN) Intel machine check architecture supported.
(XEN) Intel machine check reporting enabled on CPU#2.
(XEN) CPU2: AMD Dual-Core AMD Opteron(tm) Processor 2210 stepping 02
(XEN) Booting processor 3/3 eip 90000
(XEN) Initializing CPU#3
(XEN) CPU3: AMD Flush Filter disabled
(XEN) CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
(XEN) CPU: L2 Cache: 1024K (64 bytes/line)
(XEN) CPU 3(2) -> Core 1
(XEN) AMD SVM Extension is enabled for cpu 3.
(XEN) Intel machine check architecture supported.
(XEN) Intel machine check reporting enabled on CPU#3.
(XEN) CPU3: AMD Dual-Core AMD Opteron(tm) Processor 2210 stepping 02
(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 25.000MHz HPET
(XEN) Brought up 4 CPUs
(XEN) Machine check exception polling timer started.
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Domain 0 kernel supports features = { 0000001f }.
(XEN) Domain 0 kernel requires features = { 00000000 }.
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Dom0 alloc.:   0000000003800000->0000000004000000 (63488 pages
to be allocated)
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: ffffffff80100000->ffffffff806cf3b0
(XEN)  Init. ramdisk: ffffffff806d0000->ffffffff806d0000
(XEN)  Phys-Mach map: ffffffff806d0000->ffffffff80750000
(XEN)  Start info:    ffffffff80750000->ffffffff8075049c
(XEN)  Page tables:   ffffffff80751000->ffffffff80758000
(XEN)  Boot stack:    ffffffff80758000->ffffffff80759000
(XEN)  TOTAL:         ffffffff80000000->ffffffff80800000
(XEN)  ENTRY ADDRESS: ffffffff80100000
(XEN) Dom0 has maximum 4 VCPUs
(XEN) Scrubbing Free RAM: ...............................done.
(XEN) Xen trace buffers: disabled
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
input to Xen).

--

John

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