[Xen-changelog] [xen-unstable] arm: don't bother setting up vtimer, vgic etc on idle CPUs

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1349791538 -3600
# Node ID 1f72d3ae4ccdf5b2c36c7884ee3a4cc4f4754fd9
# Parent  c22ecf8daa6971acc57769aa999ab93354f4913f
arm: don't bother setting up vtimer, vgic etc on idle CPUs

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Acked-by: Tim Deegan <tim@xxxxxxx>
Committed-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---


diff -r c22ecf8daa69 -r 1f72d3ae4ccd xen/arch/arm/domain.c
--- a/xen/arch/arm/domain.c     Tue Oct 09 15:05:38 2012 +0100
+++ b/xen/arch/arm/domain.c     Tue Oct 09 15:05:38 2012 +0100
@@ -386,6 +386,10 @@ int vcpu_initialise(struct vcpu *v)
     v->arch.saved_context.sp = (uint32_t)v->arch.cpu_info;
     v->arch.saved_context.pc = (uint32_t)continue_new_vcpu;
 
+    /* Idle VCPUs don't need the rest of this setup */
+    if ( is_idle_vcpu(v) )
+        return rc;
+
     if ( (rc = vcpu_vgic_init(v)) != 0 )
         return rc;
 

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