From: Ian Campbell <ian.campbell@citrix.com>
Date: Tue, 9 Oct 2012 14:05:38 +0000 (+0100)
Subject: arm: don't bother setting up vtimer, vgic etc on idle CPUs
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~7767
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=368885b91fae0fa94e6e9e68aaaf27d578a12cb0;p=xen.git

arm: don't bother setting up vtimer, vgic etc on idle CPUs

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
index ee58d68677..f47db4fd8d 100644
--- a/xen/arch/arm/domain.c
+++ b/xen/arch/arm/domain.c
@@ -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;