Re: [Xen-devel] [PATCH RFC] xen: arm: use uncached foreign mappings when building guests

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 12/18/2013 05:28 PM, Ian Campbell wrote:
> I've tried this on arm64 and it seems ok, Julien, please can you give
> this a go in your midway test case which exposes this issue.
It's even worst :/. Crash every 2 times instead of 5 times.

Did you try to create/destroy numerous time? I have a script shell for 
this purpose:
#! /bin/bash

for i in `seq 1 20000`; do
    echo "Boot dom $i";
    xl create ~/dom1.xl
    sleep 5;
    xl destroy test;
    if [ $? -ne 0 ]; then
        exit
    fi
done

To be sure that the guest crash "correctly", you will need to revert the 
commit 91082d7b877cbb40de73199ba3f769d98be94215 "xen: arm: inject 
unhandled instruction and data aborts to the guest.".
Otherwise the data/prefetch fault will be redirected to the guest and 
hide for the script shell.
Cheers,

--
Julien Grall

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