From: Jan Beulich <jbeulich@novell.com>
Date: Mon, 14 Mar 2011 17:19:22 +0000 (+0000)
Subject: _csched_cpu_pick(): don't return CPUs outside vCPU's affinity mask
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=58a83b75d17c4346f0f8f20f9815e00d6f6ed5f1;p=xen.git

_csched_cpu_pick(): don't return CPUs outside vCPU's affinity mask

This fixes a fairly blatant bug I introduced in c/s 20377:cff23354d026
- I wonder how this went unnoticed for so long.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
---

diff --git a/xen/common/sched_credit.c b/xen/common/sched_credit.c
index 0cbc7e1342..bfdd567e3e 100644
--- a/xen/common/sched_credit.c
+++ b/xen/common/sched_credit.c
@@ -530,6 +530,7 @@ _csched_cpu_pick(const struct scheduler *ops, struct vcpu *vc, bool_t commit)
              || ( !sched_smt_power_savings
                   && (weight_cpu * migrate_factor < weight_nxt) ) )
         {
+            cpus_and(nxt_idlers, cpus, nxt_idlers);
             cpu = cycle_cpu(CSCHED_PCPU(nxt)->idle_bias, nxt_idlers);
             if ( commit )
                CSCHED_PCPU(nxt)->idle_bias = cpu;