Re: [Xen-devel] [PATCH v3 38/38] arm/p2m: Add test of xc_altp2m_change_gfn

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 08/17/2016 01:17 AM, Sergej Proskurin wrote:
> This commit extends xen-access by a simple test of the functionality
> provided by "xc_altp2m_change_gfn". The idea is to dynamically remap a
> trapping gfn to another mfn, which holds the same content as the
> original mfn. On success, the guest will continue to run. Subsequent
> altp2m access violations will trap into Xen and be forced by xen-access
> to switch to the default view (altp2m[0]) as before. The introduced test
> can be invoked by providing the argument "altp2m_remap".
> 
> Signed-off-by: Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
> ---
> Cc: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
> Cc: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>
> Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
> ---
> v3: Cosmetic fixes in "xenaccess_copy_gfn" and "xenaccess_change_gfn".
> 
>     Added munmap in "copy_gfn" in the second error case.
> 
>     Added option "altp2m_remap" selecting the altp2m-remap test.
> ---
>  tools/tests/xen-access/xen-access.c | 162 
> +++++++++++++++++++++++++++++++++++-
>  1 file changed, 158 insertions(+), 4 deletions(-)

Acked-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>


Thanks,
Razvan


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