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

[Tamas K Lengyel <tamas.lengyel@xxxxxxxxxxxx>]

On Thu, Aug 11, 2016 at 5:57 AM, Jan Beulich <JBeulich@xxxxxxxx> wrote:
>>>> 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>

Patch ping, I think this just needs George's ack.

Tamas

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