From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Egger <Christoph.Egger@amd.com>
Subject: [PATCH] nestedhvm: avoid endless loop of nested page
	faults
Date: Fri, 19 Aug 2011 14:02:25 +0200
Message-ID: <4E4E50D1.2050001@amd.com>
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Stop sending IPIs to flush the nested-on-nested pagetable
after write operations. Instead flush the TLB only.
This fixes an endless loop of nested page faults after
adding an entry to the nested-on-nested pagetable.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>

-- 
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diff -r ce4768a78051 xen/arch/x86/mm/hap/nested_hap.c
--- a/xen/arch/x86/mm/hap/nested_hap.c	Mon Aug 08 11:36:21 2011 +0200
+++ b/xen/arch/x86/mm/hap/nested_hap.c	Fri Aug 19 13:28:20 2011 +0200
@@ -86,8 +86,9 @@ nestedp2m_write_p2m_entry(struct p2m_dom
 
     old_flags = l1e_get_flags(*p);
     safe_write_pte(p, new);
+
     if (old_flags & _PAGE_PRESENT)
-        nestedhvm_vmcx_flushtlb(p2m);
+        flush_tlb_mask(&p2m->p2m_dirty_cpumask);
     
     paging_unlock(d);
 }

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