[Xen-changelog] [xen-unstable] [IA64] Bug fix new_tlbflush_clock_period()

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User awilliam@xxxxxxxxxxxx
# Date 1170613734 25200
# Node ID a1017acc857858dc2226bc7420ae9337943ca41e
# Parent  0df9dc2f1d034ece72e9d726527702ba219a2881
[IA64] Bug fix new_tlbflush_clock_period()

__vhpt_flush() might be called from new_tlbflush_clock_period()
even if the vcpu doesn't have the per-vcpu-vhpt.
It erases 64KB memory content that starts from machine address 0.

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
---
 xen/arch/ia64/xen/flushtlb.c |    2 ++
 1 files changed, 2 insertions(+)

diff -r 0df9dc2f1d03 -r a1017acc8578 xen/arch/ia64/xen/flushtlb.c
--- a/xen/arch/ia64/xen/flushtlb.c      Thu Feb 01 13:54:26 2007 -0700
+++ b/xen/arch/ia64/xen/flushtlb.c      Sun Feb 04 11:28:54 2007 -0700
@@ -88,6 +88,8 @@ new_tlbflush_clock_period(void)
     smp_mb();
     for_each_domain(d) {
         for_each_vcpu(d, v) {
+            if (!test_bit(_VCPUF_initialised, &v->vcpu_flags) || VMX_DOMAIN(v))
+                continue;
             if (HAS_PERVCPU_VHPT(v->domain))
                 vcpu_vhpt_flush(v);
         }

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