[Xen-ia64-devel] [PATCH] bug fix new_tlbflush_clock_period()

[Kouya SHIMURA <kouya@xxxxxxxxxxxxxx>]

Hi,

__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.

Thanks,
Kouya

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>

diff -r 0df9dc2f1d03 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      Fri Feb 02 14:29:45 2007 +0900
@@ -88,6 +88,9 @@ 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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