Luciano Coutinho Barcellos
2010-Feb-27 20:49 UTC
[Xen-users] Problem with delegated hardware (Realtek Network driver 8139too)
Dear friends,
I''ve googled a lot before giving up and come here to ask for some
help. All I''ve found about my problem was a pretty old single message
with no reply since it was post on Jul 19th, 2007.
I hope to have better luck and find some light to solve the problem.
I want to configure a domU, with 3 nics (identified as having the
Realtek 8139D chip) delegated to it. Everything works almost great
except for the message shown when I try to ifconfig any card:
SIOCSIFFLAGS: Cannot allocate memory.
Considering the following:
- The cards work fine on dom0;
- Delegating a card with chipset Via works on domU;
- Everything is fine with passthrough, card detection and module
loading in domU.
What could be the problem?
I''ve read something about an old b44 driver which suffered from a
limitation about memory allocation. It needed memory from the first
physical 16MB. Could it be a similar problem?
My configuration is the folowing:
- dom0 kernel command line includes:
pciback.hide=(00:08.0)(00:09.0)(00:0a.0)
- domU configuration file has: pci = [ ''00:08.0'',
''00:09.0'',
''00:0a.0'' ]
- xen hypervisor: 3.2.1-i386 from Debian Lenny repositories
- linux kernel for both dom0 and domU: 2.6.26-2-xen-686 from
Debian Lenny repositories
- kernel module used for the nics: 8139too
Hope to get some help.
Thank you very much.
Luciano.
_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users
Edson Marquezani Filho
2010-Mar-01 11:01 UTC
Re: [Xen-users] Problem with delegated hardware (Realtek Network driver 8139too)
On Sat, Feb 27, 2010 at 17:49, Luciano Coutinho Barcellos <luciano@geocontrol.com.br> wrote:> Dear friends, > > I''ve googled a lot before giving up and come here to ask for some help. All > I''ve found about my problem was a pretty old single message with no reply > since it was post on Jul 19th, 2007. > I hope to have better luck and find some light to solve the problem. I want > to configure a domU, with 3 nics (identified as having the Realtek 8139D > chip) delegated to it. Everything works almost great except for the message > shown when I try to ifconfig any card: > > SIOCSIFFLAGS: Cannot allocate memory. > > Considering the following: > > - The cards work fine on dom0; > - Delegating a card with chipset Via works on domU; > - Everything is fine with passthrough, card detection and module > loading in domU. > > What could be the problem? > I''ve read something about an old b44 driver which suffered from a > limitation about memory allocation. It needed memory from the first physical > 16MB. Could it be a similar problem? > My configuration is the folowing: > > - dom0 kernel command line includes: > pciback.hide=(00:08.0)(00:09.0)(00:0a.0) > - domU configuration file has: pci = [ ''00:08.0'', ''00:09.0'', ''00:0a.0'' > ] > - xen hypervisor: 3.2.1-i386 from Debian Lenny repositories > - linux kernel for both dom0 and domU: 2.6.26-2-xen-686 from Debian > Lenny repositories > - kernel module used for the nics: 8139too > > Hope to get some help. >I see you are using Debian. Are you aware of what Debian Wiki says about pci passthrough on Lenny [1]? In few words, it says that it''s possible only if you run kernel 2.6.18 (Etch''s one) for both dom0 and domU. Actualy, I didn''t tested it but I assumed it as being true and didn''t even try to configure pci passthroug with kernel 2.6.26. Anyway, you say it has worked for you and I do believe. =) But, there may be some issue related to the kernel you are using. I would try some more "traditional" Xen kernel. =) Just a clue. I hope this can help you a little bit. =) [1] http://wiki.debian.org/Xen#Installationonlenny _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Luciano Coutinho Barcellos
2010-Mar-01 14:35 UTC
Re: [Xen-users] Problem with delegated hardware (Realtek Network driver 8139too)
Edson Marquezani Filho wrote:> On Sat, Feb 27, 2010 at 17:49, Luciano Coutinho Barcellos > <luciano@geocontrol.com.br> wrote: > >> Dear friends, >> >> I''ve googled a lot before giving up and come here to ask for some help. All >> I''ve found about my problem was a pretty old single message with no reply >> since it was post on Jul 19th, 2007. >> I hope to have better luck and find some light to solve the problem. I want >> to configure a domU, with 3 nics (identified as having the Realtek 8139D >> chip) delegated to it. Everything works almost great except for the message >> shown when I try to ifconfig any card: >> >> SIOCSIFFLAGS: Cannot allocate memory. >> >> Considering the following: >> >> - The cards work fine on dom0; >> - Delegating a card with chipset Via works on domU; >> - Everything is fine with passthrough, card detection and module >> loading in domU. >> >> What could be the problem? >> I''ve read something about an old b44 driver which suffered from a >> limitation about memory allocation. It needed memory from the first physical >> 16MB. Could it be a similar problem? >> My configuration is the folowing: >> >> - dom0 kernel command line includes: >> pciback.hide=(00:08.0)(00:09.0)(00:0a.0) >> - domU configuration file has: pci = [ ''00:08.0'', ''00:09.0'', ''00:0a.0'' >> ] >> - xen hypervisor: 3.2.1-i386 from Debian Lenny repositories >> - linux kernel for both dom0 and domU: 2.6.26-2-xen-686 from Debian >> Lenny repositories >> - kernel module used for the nics: 8139too >> >> Hope to get some help. >> >> > > I see you are using Debian. Are you aware of what Debian Wiki says > about pci passthrough on Lenny [1]? In few words, it says that it''s > possible only if you run kernel 2.6.18 (Etch''s one) for both dom0 and > domU. > Actualy, I didn''t tested it but I assumed it as being true and didn''t > even try to configure pci passthroug with kernel 2.6.26. > > Anyway, you say it has worked for you and I do believe. =) But, there > may be some issue related to the kernel you are using. I would try > some more "traditional" Xen kernel. =) > > Just a clue. I hope this can help you a little bit. =) > > [1] http://wiki.debian.org/Xen#Installationonlenny >Thank you very much, Edson. I''ve just tried with the 2.6.18 kernel from Etch and it just worked. I''ve manually downloaded and installed the linux-image (http://packages.debian.org/etch/linux-image-2.6.18-6-xen-686) and linux-modules (http://packages.debian.org/etch/i386/linux-modules-2.6.18-6-xen-686/download) from Etch. Now the dom0 shows a lot of 4gb seg fixup messages in console, but that''s another question, and I think I can fix it as I''ve seen about that before. Thanks again. Valeu! :) Luciano. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users