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openSUSE:Evergreen:11.4
xen.548
22431-p2m-remove-bug-check.patch
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File 22431-p2m-remove-bug-check.patch of Package xen.548
# HG changeset patch # User Tim Deegan <Tim.Deegan@citrix.com> # Date 1290594003 0 # Node ID 79b71c77907b80772ee8cba0c5bbf8e444e61226 # Parent e5c4e925e1bd15baeadc0817dcceb5fff54b8a74 x86/mm: remove incorrect BUG_ON. This BUG_ON tests a property of an effectively random PFN in the guest, and is explicitly _not_ seeing the MFN that's known to be owned. Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com> Index: xen-4.0.3-testing/xen/arch/x86/mm/p2m.c =================================================================== --- xen-4.0.3-testing.orig/xen/arch/x86/mm/p2m.c +++ xen-4.0.3-testing/xen/arch/x86/mm/p2m.c @@ -2186,9 +2186,6 @@ guest_physmap_add_entry(struct domain *d P2M_DEBUG("aliased! mfn=%#lx, old gfn=%#lx, new gfn=%#lx\n", mfn + i, ogfn, gfn + i); omfn = gfn_to_mfn_query(d, ogfn, &ot); - /* If we get here, we know the local domain owns the page, - so it can't have been grant mapped in. */ - BUG_ON( p2m_is_grant(ot) ); if ( p2m_is_ram(ot) ) { ASSERT(mfn_valid(omfn));
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