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

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

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