RE: [Xen-devel] Assertion '! IS_INVALID_M2P_ENTRY(gpfn)' failedkillsmachine

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

Keir Fraser wrote:
> On 29 Mar 2006, at 17:09, Nakajima, Jun wrote:
> 
>> Are you doing live migration? In the default setup for domUs, the
>> shadow code is never used.
> 
> The mini patches for Linux we submitted to lkml depend on shadow mode.
> 
>   -- Keir
> 

So this is _not_ for 3.0.2? I expect some hiccups with that if domUs
start using other than log-dirty mode (e.g. SHM_translate). For this
particular bug, I think the P2M table is missing the mapping for the
xenpage_list. We'll take a look at that.

For PAE or x86-64, although xenlinux uses subset of the shadow
sub-modes, I guess we have more bugs with domUs simply because we
haven't tested (we have higher confidence with log-dirty mode for domU
live migration). HVM guests have been tested well, and they use the
shadow mode combined with SHM_external (which domUs don't).

Jun
---
Intel Open Source Technology Center

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