[Xen-changelog] [xen master] evtchn: eliminate 64k ports limitation

[patchbot@xxxxxxx]

commit 8f7f6ab879a9ad9d2bf66b8c6b46a0653086b79f
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri Apr 11 11:25:56 2014 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Apr 11 11:25:56 2014 +0200

    evtchn: eliminate 64k ports limitation
    
    The introduction of FIFO event channels claimed to support over 100k
    ports, but failed to widen a number of 16-bit variables/operations.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: David Vrabel <david.vrabel@xxxxxxxxxx>
    Acked-by: Keir Fraser <keir@xxxxxxx>
---
 xen/common/event_channel.c |    4 ++--
 xen/include/xen/sched.h    |   10 +++++-----
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/xen/common/event_channel.c b/xen/common/event_channel.c
index cbd495d..6853842 100644
--- a/xen/common/event_channel.c
+++ b/xen/common/event_channel.c
@@ -275,12 +275,12 @@ static long 
evtchn_bind_interdomain(evtchn_bind_interdomain_t *bind)
         goto out;
 
     lchn->u.interdomain.remote_dom  = rd;
-    lchn->u.interdomain.remote_port = (u16)rport;
+    lchn->u.interdomain.remote_port = rport;
     lchn->state                     = ECS_INTERDOMAIN;
     evtchn_port_init(ld, lchn);
     
     rchn->u.interdomain.remote_dom  = ld;
-    rchn->u.interdomain.remote_port = (u16)lport;
+    rchn->u.interdomain.remote_port = lport;
     rchn->state                     = ECS_INTERDOMAIN;
 
     /*
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index cbbe8a4..b080c9e 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -90,13 +90,13 @@ struct evtchn
             domid_t remote_domid;
         } unbound;     /* state == ECS_UNBOUND */
         struct {
-            u16            remote_port;
+            evtchn_port_t  remote_port;
             struct domain *remote_dom;
         } interdomain; /* state == ECS_INTERDOMAIN */
         struct {
-            u16            irq;
-            u16            next_port;
-            u16            prev_port;
+            u32            irq;
+            evtchn_port_t  next_port;
+            evtchn_port_t  prev_port;
         } pirq;        /* state == ECS_PIRQ */
         u16 virq;      /* state == ECS_VIRQ */
     } u;
@@ -209,7 +209,7 @@ struct vcpu
     atomic_t         pause_count;
 
     /* IRQ-safe virq_lock protects against delivering VIRQ to stale evtchn. */
-    u16              virq_to_evtchn[NR_VIRQS];
+    evtchn_port_t    virq_to_evtchn[NR_VIRQS];
     spinlock_t       virq_lock;
 
     /* Bitmask of CPUs on which this VCPU may run. */
--
generated by git-patchbot for /home/xen/git/xen.git#master

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