[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
FW: [Xen-users] Re: [Xen-devel] Xen - Guest memory allocation
Xen, during boot up prints the following,
__ __ _____ _____ _ _ _
\ \/ /___ _ __ |___ / |___ / _ _ _ __ ___| |_ __ _| |__ | | ___
\ // _ \ '_ \ |_ \ |_ \ __| | | | '_ \/ __| __/ _` | '_ \| |/ _ \
/ \ __/ | | | ___) | ___) |__| |_| | | | \__ \ || (_| | |_) | | __/
/_/\_\___|_| |_| |____(_)____/ \__,_|_| |_|___/\__\__,_|_.__/|_|\___|
(XEN) Xen version 3.3-unstable (reddy@(none)) (gcc version 4.1.1 (Gentoo 4.1.1-r3)) Sat May 31 00:05:56 Local time zone must be set--see zic manual page 2008
(XEN) Latest ChangeSet: Fri May 30 19:31:18 2008 +0100 17760:6e688d5a936b
(XEN) Command line:
(XEN) Video information:
(XEN) VGA is text mode 80x25, font 8x16
(XEN) VBE/DDC methods: V2; EDID transfer time: 2 seconds
(XEN) Disc information:
(XEN) Found 1 MBR signatures
(XEN) Found 1 EDD information structures
(XEN) pci_base = df000000 : pci_2 = 0
(XEN) Xen-e820 RAM map:
(XEN) 0000000000000000 - 0000000000094400 (usable)
(XEN) 0000000000094400 - 00000000000a0000 (reserved)
(XEN) 00000000000c2000 - 0000000000100000 (reserved)
(XEN) 0000000000100000 - 00000000cfe90000 (usable)
(XEN) 00000000cfe90000 - 00000000cfea3000 (ACPI data)
(XEN) 00000000cfea3000 - 00000000cff00000 (ACPI NVS)
(XEN) 00000000cff00000 - 00000000d0000000 (reserved)
(XEN) 00000000e0000000 - 00000000f0000000 (reserved)
(XEN) 00000000fec00000 - 00000000fec00400 (reserved)
(XEN) 00000000fee00000 - 00000000fee01000 (reserved)
(XEN) 00000000fff80000 - 0000000100000000 (reserved)
(XEN) 0000000100000000 - 0000000230000000 (usable)
(XEN) 00000000df000000 - 00000000df0fffff (PCI_usable) <this is the pci_device's BAR1 value>
but after DomO comes up, the config space dump of the pci_device obtained through,
lspci -xxxx <pci_device>
shows me a different BAR1 value.
Could someone tell me what could be the cause?
Thanks,
Dinesh C
> Date: Fri, 20 Jun 2008 18:03:20 +0100
> From: gm281@xxxxxxxxx
> To: dinesh_chan8@xxxxxxxxxxx
> Subject: Re: [Xen-users] Re: [Xen-devel] Xen - Guest memory allocation
> CC: xen-devel@xxxxxxxxxxxxxxxxxxx; xen-users@xxxxxxxxxxxxxxxxxxx
>
> >> Why do you want to restrict DomU to use frames from certain range
> >> only? What's the logic behind that?
> >
> > Im trying to allocate memory for domUs from memory behind a PCI device. The
> > machine_addr_start is obtained by probing the device (as I know the vendor
> > and device info) during xen boot-up.
>
> That's what I was suspecting. I think you should give PCI passthrough
> a go first.
> PCI passthrough allows a PCI device to be hidden away from Dom0 and
> exported to a DomU. You achieve the first by passing
> pciback.hide=(XX:XX.X) option to Dom0 kernel and adding pci = [
> 'XX:XX.X′ ] to DomU config file. You'll also need
> CONFIG_XEN_PCIDEV_FRONTEND=y and CONFIG_XEN_PCIDEV_BACKEND=y in your
> DomU and Dom0 kernel configs.
>
> Hope this helps
> Gr(z)egor(z)
CoolHotmail : Your crazy personality deserves a unique email identity like yourname@xxxxxxxxxxxx Choose from this and hundreds other unique email ids now Try it!
Placements ? No Problem. Register Here! Try it!
Skydrive - Get 5GB online space for FREE!. Store and share music, photos and documents online with ease. Try it now!
|
Attachment:
ATT00001
Description: Text document
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
