[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [RFC PATCH v2 13/22] xen/arm: its: Add virtual ITS command support



On 29/04/15 14:08, Manish Jaggi wrote:
>>> Do you have any other security concern ?
>> Yes. The one we talked in every mail since the beginning of this thread
>> "polling in EL2". We got several XSA because the hypervisor code wasn't
>> preemptible (see [1])
>>
> We are removing polling using command processing completion which is
> signalled using INT interrupt.

Based on the discussion with Vijay, the completion based on the INT
command doesn't seems the right solution (see in particular [1] and [2])

Could you wait the end of this discussion before starting to implement
something that you may have to throw later?

Regards,

[1] http://lists.xen.org/archives/html/xen-devel/2015-04/msg03038.html
[2] http://lists.xen.org/archives/html/xen-devel/2015-04/msg03056.html

-- 
Julien Grall

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.