Re: [Xen-devel] ParaGuest cannot see 30GB memory

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Add "lowmem_emergency_pool=16M" as a Xen boot parameter in your 
bootloader configuration file. That should avoid this error.
 -- Keir

On 10 May 2006, at 01:17, pak333@xxxxxxxxxxx wrote:

>  
>  
> Looks like ti has problem allcoating mem
>  
> Mounting other filesystems:  [  OK  ]
> Starting automount: kernel BUG at arch/xen/i386/mm/pgtable.c:284 
> (pgd_ctor)!
>  [<c011334f>] pgd_ctor+0x50/0x5c
>  [<c0146076>] cache_init_objs+0x49/0x60
>  [<c0146245>] cache_grow+0x119/0x1df
>  [<c01464d5>] cache_alloc_refill+0x1ca/0x232
>  [<c0146748>] kmem_cache_alloc+0x7e/0x82
>  [<c01133c3>] pgd_alloc+0x1c/0x31e
>  [<c014fa92>] do_anonymous_page+0x97/0x28e
>  [<c011c476>] mm_init+0xe6/0x117
>  [<c011c75f>] copy_mm+0xbd/0x3bc
>  [<c011cd99>] copy_files+0x20b/0x30f
>  [<c0132d1e>] do_posix_clock_monotonic_get+0x18/0x4a
>  [<c032adc0>] inflate_fixed+0x23/0x170
>  [<c011d342>] copy_process+0x402/0xcc1
>  [<c016d131>] do_pipe+0x188/0x216
>  [<c032ac80>] inflate_stored+0x76/0x193
>  [<c011dcf5>] do_fork+0x68/0x197
>  [<c012b48c>] sys_rt_sigprocmask+0x86/0xe8
>  [<c0108043>] sys_clone+0x3e/0x42
>  [<c0109551>] syscall_call+0x7/0xb
> Kernel panic - not syncing: BUG!
>  
> > -------------- Original message --------------
> > From: "Puthiyaparambil, Aravindh" 
> > <aravindh.puthiyaparambil@xxxxxxxxxx>
> > Could you send the serial output for the kernel panic?
> >  
> > Thanks,
> > Aravindh
> >  
> > From: pak333@xxxxxxxxxxx [mailto:pak333@xxxxxxxxxxx]
> > Sent: Tuesday, May 09, 2006 7:37 PM
> > To: Puthiyaparambil, Aravindh; xen-devel@xxxxxxxxxxxxxxxxxxx
> > Subject: RE: [Xen-devel] ParaGuest cannot see 30GB memory
> >  
> >  
> > Hi, I tried with 15GB and that too did not work. kernel panic: not 
> > syncing : BUG
> > This may be related to some of the other traffic I am seeing
> >  
> > - Thanks
> > - padma
> >  
> > > -------------- Original message --------------
> > > From: "Puthiyaparambil, Aravindh" 
> > > <aravindh.puthiyaparambil@xxxxxxxxxx>
> > > Xen can only see 16GB of memory in PAE mode. So the greatest amount 
> > > of memory you can assign to guest is a little less than 16GB – 
> > > dom0_mem.
> > >  
> > > Aravindh
> > >  
> > > From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> > > [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> > > pak333@xxxxxxxxxxx
> > > Sent: Tuesday, May 09, 2006 7:02 PM
> > > To: xen-devel@xxxxxxxxxxxxxxxxxxx
> > > Subject: [Xen-devel] ParaGuest cannot see 30GB memory
> > >  
> > > Hi,
> > >  
> > > I have buit Xen (32 bit) with PAE and can start multiple Paraguests 
> > > with 4 gig memory, but cannot launch a single VM with more than 4 gb 
> > > memory. I would like to launch 1 VM with 30GB or so memory. Are 
> > > there any config paramters like kernel,/inittrd that need to be 
> > > changed.
> > >  
> > > I have the ramdisk set to the initrd I used to boot xen with PAE.
> > >  
> > > Thanks
> > > - padma
> > >  _______________________________________________
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