Re: [XenPPC] [linux-ppc-2.6] [XEN] The VIO rewrite

[Jimi Xenidis <jimix@xxxxxxxxxxxxxx>]

On Nov 8, 2006, at 9:57 AM, Jimi Xenidis wrote:

> On Nov 4, 2006, at 12:35 PM, poff wrote:
>
> > Here's this patch on JS20, with 192mb Dom0, 512mb total:
> Hmm, so a 512MiB machine?
>
> > arch_gnttab_map: grant table at d000080082016000
> > setup_grant_area: mempool_create(): failed
> > kernel BUG in setup_grant_area at /home/poff/linux-ppc-2.6-work.hg/ 
> > arch/powerpc/platforms/xen/gnttab.c:420!
> > cpu 0x0: Vector: 700 (Program Check) at [c000000000a3fa50]
> >     pc: c000000000043fc0: .arch_gnttab_map+0x1bc/0x254
> >     lr: c000000000043fbc: .arch_gnttab_map+0x1b8/0x254
> >     sp: c000000000a3fcd0
> >    msr: 8000000000028032
> >   current = 0xc000000000a31800
> >   paca    = 0xc00000000052e300
> >     pid   = 1, comm = swapper
> > kernel BUG in setup_grant_area at /home/poff/linux-ppc-2.6-work.hg/ 
> > arch/powerpc/platforms/xen/gnttab.c:420!
> > enter ? for help
> > 0:mon>
> Hmm, ok.. I wonder why it failed?
> I'm such a lazy @ss when I use BUG() all the time, I really did not  
> expect mempool to ever have a memory issue.
> I'll see if I can replicate by forcing my dom0 to this size.
Hmm.. I capped my Dom0 to 192M and 64M and it worked fine.  The only  
reason that mempool_create() can fail is if an underlying kmalloc  
failed, I don't think that we are trying to get so much memory.
Hey! did you update Xen as well? because the number of pages was way  
too large before.
-JX

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