Re: [PATCH 0/3] XSM PIRQ and rcu_lock_target cleanup

[Daniel De Graaf <dgdegra@tycho.nsa.gov>]

On 01/18/2013 04:23 AM, Ian Campbell wrote:
> On Thu, 2013-01-17 at 18:55 +0000, Daniel De Graaf wrote:
>> These three patches finish up the XSM IS_PRIV reworking, in addition to
>> the patches posted by Ian and Lars fixing things for ARM. I did not
>> include a patch removing the rcu_lock_target_domain_by_id function
>> because it's still referenced in ARM at the moment, but it looks like
>> those locations are being changed (or will be changed in the future).
> 
> Am I right that the appropriate transformation is:
> 	rc = rcu_lock_target_domain_by_id(domid, &d);
> becomes:
> 	d = rcu_lock_domain_by_any_id(a.domid);
>         if ( d == NULL )
>             return -ESRCH;
> 
> 	rc = xsm_SOMETHING(XSM_TARGET, d, PARAMS);
> 	if ( rc )
> 	    ... unlock .. return or goto err
> 
> Ian.
> 

Yes, this is correct. Looking at today's xen-unstable, only the
XENMAPSPACE_gmfn_foreign mapping needs a new ARM-only XSM hook.

-- 
Daniel De Graaf
National Security Agency