RE: [Xen-ia64-devel] domU stability

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

>From: Magenheimer, Dan (HP Labs Fort Collins) [mailto:dan.magenheimer@xxxxxx]
>Sent: 2005年11月15日 22:50
>> >From: Tristan Gingold
>> >
>> >I am trying xen-ia64-unstable.hg using changeset 7729.  Dom0
>> works well.
>> >However, domU seems pretty unstable: I got a lot of bad mpa:
>> >However, I was able to log on domU (after many tries).
>> >Has any of you the same errors or is it ok ?
>>
>> Hi, Tristan,
>>      That warning is harmless, and currently the grant table
>> pfn is hard code at 0x10000000000 in guest physical, which is
>> out of normal guest memory range. When be/fe driver
>> communicates, grant table entries are touched and then you
>> saw above warnings.
>
>They do not seem to cause any problems but
>I'm not entirely sure they are harmless.  I think these addresses
>are domU grant table entries that should be translated to
>virtual addresses and shouldn't find their way to
>translate_domain_pte.

Don't know what you mean. What I saw is, guest tried to access identity mapped 
virtual address by 0xe00001000... (grant table entries), which page fault and 
hit in vcpu_translate and then go to translate_domain_pte for out-of-range 
guest physical address 0x1000... and finally warning.

We may need to find better way to do that anyway.

Thanks,
Kevin

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