RE: [Xen-devel] [BUG] X86-64 dom0 oops if dom0_mem not specified

["Nakajima, Jun" <jun.nakajima@xxxxxxxxx>]

Jerone Young wrote:
>> From my observations if you don't pass dom0_mem or you pass dom0_mem
> with a value greater that 256000, Dom0 will oops on boot. Here is some
> output from the oops:

I'm taking a look at this problem. 

Jun

> 
> (XEN) *** LOADING DOMAIN 0 ***
> (XEN) Xen-ELF header found:
> 'GUEST_OS=linux,GUEST_VER=2.6,XEN_VER=3.0,VIRT_BASE'(XEN) PHYSICAL
> MEMORY ARRANGEMENT:
> (XEN)  Dom0 alloc.:   0000000040000000->0000000080000000 (641881 pages
> to be al)(XEN) VIRTUAL MEMORY ARRANGEMENT:
> (XEN)  Loaded kernel: ffffffff80100000->ffffffff80516085
> (XEN)  Init. ramdisk: ffffffff80517000->ffffffff80517000
> (XEN)  Phys-Mach map: ffffffff80517000->ffffffff80889d64
> (XEN)  Page tables:   ffffffff8088a000->ffffffff80893000
> (XEN)  Start info:    ffffffff80893000->ffffffff80894000
> (XEN)  Boot stack:    ffffffff80894000->ffffffff80895000
> (XEN)  TOTAL:         ffffffff80000000->ffffffff80c00000
> (XEN)  ENTRY ADDRESS: ffffffff80100000
> (XEN) Scrubbing Free RAM: ....................................done.
> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch
> input to Xe. Xen: 0000000000000000 - 00000000dcb59000 (usable)
> (XEN) BUG at domain.c:136
> (XEN) CPU:    0
> (XEN) EIP:    0810:[<ffff830000107369>]
> (XEN) EFLAGS: 0000000000010292
> (XEN) rax: 0000000000000000   rbx: ffff830000fecb80   rcx:
> 00000000000003f8   r5(XEN) rsi: 000000000000000a   rdi:
> ffff830000160474 rbp: 00000000dcb59000   r8(XEN) r8: 
> 0000000000000036   r9: 0000000000001996   r10: 0000000000000001  
> r4(XEN) r12: ffffffff80a95b50 r13: 000000000000016a   r14:
> 0000000000000001   r8(XEN) Stack trace from RSP=ffff830000105ee8:
> (XEN)     [ffff830000107450] ffff830000fea080 00000000dcb59000
> [ffff83000010745
> (XEN)     000000000000016a ffffffff80a95b50 00000000dcb59000
> ffffffff80c00000 0
> (XEN)     0000000000000000 0000000000000000 0000000000000000
> 0000000000000000 f
> (XEN)     0000000000010216 ffffffff80104040 000000000000082b
> 0000000000000000 0
> (XEN)     0000000000000000 0000000000000000 ffff830000fea080
> (XEN) Call Trace from RSP=ffff830000105ee8:
> (XEN)    [<ffff830000107450>] [<ffff830000107459>]
> [<ffff830000137596>] 
> 
> ****************************************
> CPU0 FATAL TRAP: vector = 6 (invalid operand)
> [error_code=0000]
> Aieee! CPU0 is toast...
> ****************************************


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