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

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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