[Xen-devel] pv-grub heap exhausted?

["Fischer, Anna" <anna.fischer@xxxxxx>]

I am using Xen 3.3.1 (release version). I cannot start my PV domU with pv-grub 
when I allocate more than 1023MB RAM to the guest. 

I have seen another thread on xen-devel that looks exactly like my case: 
http://www.nabble.com/pv_grub-and->1023M-RAM-%3D%3D-death-td20819433.html. I 
have checked on my pv-grub code under extras/mini-os/... and it seems as if the 
patch is applied already. However, I still cannot boot up my guest with over 
1023MB RAM. I have listed the logs below. I have 2GB RAM on the system, dom0 
owns 512MB only.

Many thanks,
Anna


[root@localhost user]# xm create -c pv.cfg
Using config file "./pv.cfg".
Started domain sos-pv
                     Xen Minimal OS!
start_info:   0xa64000
  nr_pages:   262144  shared_inf: 001c8000
  pt_base:    0xa67000  mod_start:  0x0
  mod_len:    0
  flags:      0x0
  cmd_line:   (hd0)/boot/grub/menu-pv.lst
  stack:      0x943780-0x963780
MM: Init
  _text:        0x0
  _etext:       0x5f8b5
  _erodata:     0x73000
  _edata:       0x786d4
  stack start:  0x943780
  _end:         0x963d14
  start_pfn:    a73
  max_pfn:      40000
Mapping memory range 0xc00000 - 0x40000000
setting 0x0-0x73000 readonly
skipped 0x1000
MM: Initialise page allocator for c6d000(c6d000)-0(40000000)
MM: done
Demand map pfns at 40001000-c0001000.
Heap resides at c0002000-2000.
Initialising timer interface
Initialising console ... done.
gnttab_table mapped at 0x40001000.
Initialising scheduler
Heap exhausted: 0xc0002000 + 480 = 0xc0002480 > 0x2000
Heap exhausted: 0xc0002000 + b80 = 0xc0002b80 > 0x2000
Page fault at linear address 0x4, eip 0x51e90, regs 0x95feb8, sp 0x77da0, 
our_sp 0x95fe98, code 2
Page fault in pagetable walk (access to invalid memory?).


xm dmesg shows

(XEN) mm.c:676:d0 Non-privileged (3) attempt to map I/O space 00000000
(XEN) mm.c:676:d0 Non-privileged (3) attempt to map I/O space 00000000
(XEN) printk: 56822 messages suppressed.
(XEN) mm.c:676:d0 Non-privileged (3) attempt to map I/O space 00000000
(XEN) printk: 67717 messages suppressed.
(XEN) mm.c:676:d0 Non-privileged (3) attempt to map I/O space 00000000

xm info shows

host                   : localhost.localdomain
release                : 2.6.18.8-xen
version                : #5 SMP Thu Mar 5 04:14:30 PST 2009
machine                : i686
nr_cpus                : 2
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 2200
virt_caps              : hvm
total_memory           : 2039
free_memory            : 1501
node_to_cpu            : node0:0-1
node_to_memory         : node0:1501
xen_major              : 3
xen_minor              : 3
xen_extra              : .1
xen_caps               : xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p 
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xf5800000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.1.2 20070925 (Red Hat 4.1.2-33)
cc_compile_by          : root
cc_compile_domain      : localdomain
cc_compile_date        : Thu Mar  5 07:47:18 PST 2009
xend_config_format     : 4





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