RE: [Xen-devel] Yet another "Not enough memory for DOM0 memory reservation"

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> I have a couple of machines with > 4GB of RAM. I haven't seen any
> problems, but then again I've never given a domain more than 1GB.

Yep, >=4GB definitly used to work (though only 4GB is usable), so it
must be something we've broken fairly recently, or be quite hardware
specific. 

We'll see if we can reproduce locally, alternatively, please can you add
some debugging to alloc_boot_pages in page_alloc.c. Specifically it
would be good to print size and align, and to print out the values of pg
and i before the test for i==size.

Ian

 
> 
>                                       -Kip
> 
> 
> 
> On Wed, 19 Jan 2005, Keir Fraser wrote:
> 
> >
> > We have only tested on machines with up to 2GB RAM. Your 
> problem looks
> > similar to a recent report that Xen fails on a 4GB machine. We have
> > just obtained a new 4GB machine ourseleves -- once we have 
> that set up
> > in our test rack I can test >=4GB configurations and hopefullyu put
> > these big-mem bugs to rest. :-)
> >
> >  -- Keir
> >
> > > I am running Xen 2.0.3 on a 2x Intel P4 3.4GHz box with 
> 8GB of RAM. My
> > > base system is SLES9 SP1-RC3. When I try booting Xen 
> DOM0, I am getting
> > > the following error message.
> > >
> > > Xen version 2.0.3 (root@site) (gcc version 3.3.3 (SuSE 
> Linux)) Tue Jan
> > > 18 13:34:53 EST 2005
> > > Latest ChangeSet: information unavailable
> > >
> > > (XEN) Physical RAM map:
> > > (XEN)  0000000000000000 - 000000000009fc00 (usable)
> > > (XEN)  000000000009fc00 - 00000000000a0000 (reserved)
> > > (XEN)  00000000000ebaf0 - 0000000000100000 (reserved)
> > > (XEN)  0000000000100000 - 00000000dffd0000 (usable)
> > > (XEN)  00000000dffd0000 - 00000000dffdf000 (ACPI data)
> > > (XEN)  00000000dffdf000 - 00000000e0000000 (ACPI NVS)
> > > (XEN)  00000000e0000000 - 00000000f0000000 (reserved)
> > > (XEN)  00000000ffc00000 - 0000000100000000 (reserved)
> > > (XEN)  0000000100000000 - 0000000220000000 (usable)
> > > (XEN) System RAM: 8191MB (8388028kB)
> > > (XEN) Not enough memory for DOM0 memory reservation.
> > >
> > > I have added HIGHMEM support to the kernel and set 
> dom0_mem to 131072.
> > > Am I tripping up because I am trying to run on a system 
> with 8GB of RAM?
> > >
> > > Any help would be appreciated.
> > > Thanks
> > > Aravindh
> > >
> > >
> > >
> > > -------------------------------------------------------
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> > >
> >  -=- MIME -=- 
> > I am running Xen 2.0.3 on a 2x Intel P4 3.4GHz box with 8GB 
> of RAM. My
> > base system is SLES9 SP1-RC3. When I try booting Xen DOM0, 
> I am getting
> > the following error message.
> >
> > Xen version 2.0.3 (root@site) (gcc version 3.3.3 (SuSE 
> Linux)) Tue Jan
> > 18 13:34:53 EST 2005
> > Latest ChangeSet: information unavailable
> >
> > (XEN) Physical RAM map:
> > (XEN)  0000000000000000 - 000000000009fc00 (usable)
> > (XEN)  000000000009fc00 - 00000000000a0000 (reserved)
> > (XEN)  00000000000ebaf0 - 0000000000100000 (reserved)
> > (XEN)  0000000000100000 - 00000000dffd0000 (usable)
> > (XEN)  00000000dffd0000 - 00000000dffdf000 (ACPI data)
> > (XEN)  00000000dffdf000 - 00000000e0000000 (ACPI NVS)
> > (XEN)  00000000e0000000 - 00000000f0000000 (reserved)
> > (XEN)  00000000ffc00000 - 0000000100000000 (reserved)
> > (XEN)  0000000100000000 - 0000000220000000 (usable)
> > (XEN) System RAM: 8191MB (8388028kB)
> > (XEN) Not enough memory for DOM0 memory reservation.
> >
> > I have added HIGHMEM support to the kernel and set dom0_mem 
> to 131072.
> > Am I tripping up because I am trying to run on a system 
> with 8GB of RAM?
> >
> > Any help would be appreciated.
> > Thanks
> > Aravindh
> >
> >
> >
> > -------------------------------------------------------
> > The SF.Net email is sponsored by: Beat the post-holiday blues
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> almost....http://www.thinkgeek.com/sfshirt
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.sourceforge.net/lists/listinfo/xen-devel
> >
> >
> >
> >
> > -------------------------------------------------------
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> >
> 
> 
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