From: Hollis Blanchard <hollisb@us.ibm.com>
Date: Fri, 8 Sep 2006 17:28:49 +0000 (-0500)
Subject: [XEN][POWERPC] fix timebase race in SMP init
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~15658^2~74
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=4e650106d32e04bbab8738af9c818c679f537c05;p=xen.git

[XEN][POWERPC] fix timebase race in SMP init

cpuid was being set twice in cpu_online_map, and the first one was causing a
race in the timebase synchronization code.

Signed-off-by: Amos Waterland <apw@us.ibm.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
---

diff --git a/xen/arch/powerpc/setup.c b/xen/arch/powerpc/setup.c
index 43c6878615..1350a63701 100644
--- a/xen/arch/powerpc/setup.c
+++ b/xen/arch/powerpc/setup.c
@@ -244,7 +244,6 @@ static int kick_secondary_cpus(int maxcpus)
         if (cpuid >= maxcpus)
             break;
         init_parea(cpuid);
-        cpu_set(cpuid, cpu_online_map);
         smp_generic_give_timebase();
 
         /* wait for it */