Re: [Xen-devel] [PATCH v2 1/2] x86/altp2m: use __get_gfn_type_access to avoid lock conflicts

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 10.08.16 at 17:00, <tamas.lengyel@xxxxxxxxxxxx> wrote:
> From: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>
> 
> Use __get_gfn_type_access instead of get_gfn_type_access when checking
> the hostp2m entries during altp2m mem_access setting and gfn remapping
> to avoid a lock conflict which can make dom0 freeze. During mem_access
> setting the hp2m is already locked. For gfn remapping we change the flow
> to lock the hp2m before locking the ap2m.
> 
> Signed-off-by: Tamas K Lengyel <tamas.lengyel@xxxxxxxxxxxx>
> Reviewed-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>


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