Re: [Xen-devel] [RFC 21/22] xen/arm: p2m: Re-implement p2m_set_mem_access using p2m_{set, get}_entry

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 09/06/16 22:06, Stefano Stabellini wrote:
> On Thu, 28 Jul 2016, Julien Grall wrote:
>> > The function p2m_set_mem_access can be re-implemented using the generic
>> > functions p2m_get_entry and __p2m_set_entry.
>> > 
>> > Note that because of the implementation of p2m_get_entry, a TLB
>> > invalidation instruction will be issued for each 4KB page. Therefore the
>> > performance of memaccess will be impacted, however the function is now
>> > safe on all the processors.
>> > 
>> > Also the function apply_p2m_changes is dropped completely as it is not
>> > unused anymore.
>> > 
>> > Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
>> > Cc: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
>> > Cc: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>
> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

How far is this patch from landing into staging? Considering the recent
discussion about the patch I'm working on, this would certainly impact
the upcoming ARM part of it.


Thanks,
Razvan

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